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Pathomorphological Characteristics of Meningioma Biomineralization | https://av.tib.eu/media/59295 | null | https://tib.flowcenter.de/mfc/medialink/3/def68f1edc957cd8aa45f3e6b7209b9d65797a681bd278f862923f21a005109995/Denysenko_Pathomorphogical_Characteristics_of_Meningioma.mp4 | 2022 | Information Science | Conference/Talk | null | English | 10.5446/59295 (DOI) | CC Attribution 3.0 Germany:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Denysenko, Anastasiia | null |
Die ukrainische Künstlerdiaspora in Deutschland und Amerkika im Kontext des Schaffens von Svyatoslav Hordynsky, Edward Kozak und Petro Mehyk | https://av.tib.eu/media/58291 | null | https://tib.flowcenter.de/mfc/medialink/3/de7b5023032bb9aa398c08558a535a3df39d7c0d1962ce9667bb7dcbfb66c0b37b/Skip_Die_ukrainische_Kuenstlerdiaspora_in_Deutschland_ENG.mp4 | 2022 | Information Science | Conference/Talk | null | English | 10.5446/58291 (DOI) | CC Attribution 3.0 Germany:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Skip, Veronika | null |
O-minimal flows on nilmanifolds | https://av.tib.eu/media/59320 | null | https://tib.flowcenter.de/mfc/medialink/3/de6e7c1fc3e3c35e08b92cfe10be5e1533a69729f48727661e9482dfb99060ece7/201810150900-Peterzil_lrv.mp4 | 2018 | Mathematics | Workshop/Interactive Format
Lecture | Let G be a real algebraic unipotent group and let Lambda be a lattice in G, with p:G->G/Lambda the quotient map. Given a definable subset X of G, in some o-minimal expansion of the reals, we describe the closure of p(X) in G/Lambda in terms definable families of cosets of real algebraic subgroups of G of positive dimension. The family is extracted from X independently of Lambda. | English | 10.5446/59320 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Peterzil, Kobi | null |
Non-forking and preservation of NIP types | https://av.tib.eu/media/59321 | null | https://tib.flowcenter.de/mfc/medialink/3/de45d4f713ce75c7325b3db6bdeb44ea6b49a511db6e3d85eac7c8323b36d49c50/201810151002-Kaplan_lrv.mp4 | 2018 | Mathematics | Workshop/Interactive Format
Lecture | Adler, Casanovas and Pillay proved that if p is a complete stable type over a set B which does not fork over a set A, then the restriction of p to A is also stable. I will address the analogous question, replacing stable with NIP. In addition I will present a new proof for the stable case which uses elementary techniques. | English | 10.5446/59321 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Kaplan, Itay | Estevan, Pedro Andres |
Strong type spaces as quotients of Polish groups | https://av.tib.eu/media/59322 | null | https://tib.flowcenter.de/mfc/medialink/3/deaae7f6a805c5d520ca8f38a30fbe3d916cd938a597f3fc50f075be17bb322ebc/201810151140-Rzepecki_lrv.mp4 | 2018 | Mathematics | Workshop/Interactive Format
Lecture | In recent work with Krupiński, we showed that strong type spaces can be seen (in a strong sense) as quotients of compact Polish groups, and as a consequence. I will give a brief account of the argument, as well as describe some applications, such as showing that a non-definable analytic subgroup of a type-definable group has index continuum (and in particular, that an analytic subgroup cannot have countably infinite index). | English | 10.5446/59322 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Rzepecki, Tomasz | Krupiński, Krzysztof |
Metastability | https://av.tib.eu/media/59323 | null | https://tib.flowcenter.de/mfc/medialink/3/dec7dd6b2dc7b3916b31e13a3da3d5e30e9d2d1ab6f95c300ac0ed105c5c7b282f930f/201810151230-Rideau_lrv.mp4 | 2018 | Mathematics | Workshop/Interactive Format
Lecture | In their work on the model theory of algebraically closed valued fields, Haskell, Hrushovski and Macpherson developed a notion of stable domination and metastability which tries to capture the idea that in an algebraically closed valued field, numerous behaviors are (generically) controlled by the value group and/or the residue field. In this talk I will explain how (finite rank) metastability can be used to decompose commutative definable groups, in term of stable groups and value group internal groups. Time permitting, I will quickly describe the applications of these results to the study of algebraically closed valued fields, in particular, the classification of interpretable fields. | English | 10.5446/59323 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Rideau, Silvain | null |
Victim of its own success (?) - Western democracy promotion in Ukraine between grand visions and (geo)political realities | https://av.tib.eu/media/58296 | null | https://tib.flowcenter.de/mfc/medialink/3/de4df792eeff317219b1e20c671b06cea02a9cd8e9717a83a6e71f411507fa9286/Richter_Victim_of_its_own_success.mp4 | 2022 | Information Science | Conference/Talk | null | English | 10.5446/58296 (DOI) | CC Attribution 3.0 Germany:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Richter, Michael Martin | null |
Monotone theories | https://av.tib.eu/media/59324 | null | https://tib.flowcenter.de/mfc/medialink/3/de7981b5c6e2168f7946bd5c5ca05d3f12271ed665dd665c5caa7957c96db2c97b028e/201810151541-Moconja_lrv.mp4 | 2018 | Mathematics | Workshop/Interactive Format
Lecture | null | English | 10.5446/59324 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Moconja, Slavko | null |
Linear orders in NIP theories | https://av.tib.eu/media/59325 | null | https://tib.flowcenter.de/mfc/medialink/3/def0321d5e893b72ddff365fd56b60ea8a799f033a534ea3b8f1187f9acec26ba4/201810151801-Simon_lrv.mp4 | 2018 | Mathematics | Workshop/Interactive Format
Lecture | A longstanding open questions asks whether an unstable NIP theory interprets an infinite linear order. I will present a construction giving a type-definable linear (quasi-)order, thus partially answering this question. | English | 10.5446/59325 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Simon, Pierre | null |
Amenability and definability | https://av.tib.eu/media/59326 | null | https://tib.flowcenter.de/mfc/medialink/3/de9b2e35995e31c2d95ef9899e47e05009e5405c5c746439e3f475bbd778edae18ea/201810160901-Krupinski_lrv.mp4 | 2018 | Mathematics | Workshop/Interactive Format
Lecture | null | English | 10.5446/59326 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Krupinski, Krzysztof | null |
Localized Lascar group | https://av.tib.eu/media/59327 | null | https://tib.flowcenter.de/mfc/medialink/3/de34744ea8c63748c8a3f36161a2ab5b7e615b03883c89461da13c7b4b0bddc1b7/201810161006-Dobrowolski_lrv.mp4 | 2018 | Mathematics | Workshop/Interactive Format
Lecture | The notion of the localized Lascar-Galois group GalL(p) of a type p appeared recently in the context of model-theoretic homology groups, and was also used by Krupinski, Newelski, and Simon in the context of topological dynamics. After a brief introduction of the context, we will discuss some basic properties of localized Lascar-Galois groups. Then, we will focus on the question about how far GalL(tp(acl(a))) can be from GalL(tp(a)). This is a joint work with B. Kim, A. Kolesnikov and J. Lee. | English | 10.5446/59327 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Dobrowolski, Jan | null |
Interpolative Fusions | https://av.tib.eu/media/59328 | null | https://tib.flowcenter.de/mfc/medialink/3/deffa5e1b10513e02b4a1952edc32bbdf789581020e6830bdf3060c6270c2a3c6e/201810161141-Kruckman_lrv.mp4 | 2018 | Mathematics | Workshop/Interactive Format
Lecture | null | English | 10.5446/59328 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Kruckman, Alex | null |
NSOP_1 theories | https://av.tib.eu/media/59329 | null | https://tib.flowcenter.de/mfc/medialink/3/deb178bec21cb28e3aba0e387661dd1ee3470e64356ed9bf8b30e994318fba4d6f/201810161231-Kim_lrv.mp4 | 2018 | Mathematics | Workshop/Interactive Format
Lecture | Let T be an NSOP1 theory. Recently I. Kaplan and N. Ramsey proved that in T, the so-called Kim-independence (ϕ(x,a0) Kim-divides over A if there is a Morley sequence ai such that {ϕ(x,ai)}i is inconsistent) satisfies nice properties over models such as extension, symmetry, and type-amalgamation. In a joint work with J. Dobrowolski and N. Ramey we continue to show that in T with nonforking existence, Kim-independence also satisfies the properties over any sets, in particular, Kim’s lemma, and 3-amalgamation for Lascar types hold. Modeling theorem for trees in a joint paper with H. Kim and L. Scow plays a key role in showing Kim’s lemma. If time permits I will talk about a result extending the non-finiteness (except 1) of the number of countable models of supersimple theories to the NSOP1 theory context. | English | 10.5446/59329 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Kim, Byunghan | null |
Equivalence query learning and the negation of the finite cover property | https://av.tib.eu/media/59330 | null | https://tib.flowcenter.de/mfc/medialink/3/de895066b5ee51c83b3003fc1afd9bde2ecf315fb06e94d6776f1d24c6810fb90d/201810161612-Chase_lrv.mp4 | 2018 | Mathematics | Workshop/Interactive Format
Lecture | There are multiple connections between model-theoretic notions of complexity and machine learning. NIP formulas correspond to PAC-learning by way of VC-dimension, and stable formulas correspond to online learning by way of Littlestone dimension, also known as Shelah's 2-rank. We explore a similar connection between formulas without the finite cover property and equivalence query learning. In equivalence query learning, a learner attempts to identify a certain set from a set system by making hypotheses and receiving counterexamples. We use the notion of (strong) consistency dimension, an analogue of the the negation of the finite cover property for set systems. We show that finite (strong) consistency dimension and finite LIttlestone dimension characterize equivalence query learning, drawing on ideas from model theory. We also discuss the role of Littlestone dimension and strong consistency dimension in algorithms. | English | 10.5446/59330 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Chase, Hunter | null |
Retro-stability: The fine structure of classifiable theories | https://av.tib.eu/media/59331 | null | https://tib.flowcenter.de/mfc/medialink/3/de605731f67f306b2d16d35deda830f0fc2dacda3837fd5783bf8ad5ea8202fc5a/201810161801-Laskowski_lrv.mp4 | 2018 | Mathematics | Workshop/Interactive Format
Lecture | We give (equivalent) friendlier definitions of classifiable theories strengthen known results about how an independent triple of models can be completed to a model. As well, we characterize when the isomorphism type of a weight one extension N/M is uniquely determined by the non-orthogonality class of the relevant regular type and discuss when N is prime over Ma for some finite a∈N. This is part of an ongoing project with Elisabeth Bouscaren, Bradd Hart, and Udi Hrushovski. | English | 10.5446/59331 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Laskowski, Chris | null |
An "Ahlbrandt-Ziegler Reconstruction" for theories which are not necessarily countably categorical | https://av.tib.eu/media/59332 | null | https://tib.flowcenter.de/mfc/medialink/3/de2192d172408a6d128fc523afc8ff68b30eabfad595cd1233e46abf6ce164a3d1/201810170902-BenYaacov_lrv.mp4 | 2018 | Mathematics | Workshop/Interactive Format
Lecture | It is by now almost folklore that if T is a countably categorical theory, and M its unique countable model, then the topological group G(T) = Aut(M) is a complete invariant for the bi-interpretability class of T . This gained renewed interest recently, given the correspondences between dynamical properties of G(T) and classification-theoretic properties of T . From a model-theoretic point of view, the obvious drawback is the restriction to countably categorical theories. As a first step, I will discuss how to generalise the original result to arbitrary theories in a countable language. | English | 10.5446/59332 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Yaacov, Itaï Ben | null |
NTP_2 groups with f-generics and PRC fields | https://av.tib.eu/media/59333 | null | https://tib.flowcenter.de/mfc/medialink/3/de28de903e021f08d2fce82cff1854b458eeb323cb13946b575a363ee499a934cf/201810171012-Montenegro_lrv.mp4 | 2018 | Mathematics | Workshop/Interactive Format
Lecture | In this talk we focus on groups with f-generic types definable in NTP2 theories. In particular we study the case of bounded PRC fields. PRC fields were introduced by Prestel and Basarav as a generalization of real closed fields and pseudo algebraically closed fields, where we admit having several orders. We know that the complete theory of a bounded PRC field is NTP2 and we have a good description of forking. We use some alternative versions of Hrushovski’s “Stabilizer Theorem” to describe the definable groups with f generics in PRC fields. The main theorem is that such a group is isogeneous with a finite index subgroup of a quantifier-free definable groups. In fact, the latter group admits a definable covering by multi-cells on which the group operation is algebraic. This generalizes similar results proved by Hrushovski and Pillay for (not necessarily f-generic) groups definable in both pseudo finite fields and real closed fields. | English | 10.5446/59333 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Montenegro Guzman, Samaria | Onshuus, Alf
Simon, Pierre |
On generalizations of the Elekes-Szabo theorem | https://av.tib.eu/media/59334 | null | https://tib.flowcenter.de/mfc/medialink/3/de1fd718e04e02df053ee29634d378f2a6e5de242809647c184e5fd4856a572ef0/201810180903-Chernikov_lrv.mp4 | 2018 | Mathematics | Workshop/Interactive Format
Lecture | null | English | 10.5446/59334 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Chernikov, Artem | null |
Classification Theory and the Construction of PAC Fields | https://av.tib.eu/media/59335 | null | https://tib.flowcenter.de/mfc/medialink/3/de6cd4437c20fc0c4cf4aa0739760dcdb06b3111182b27ac06b649df8fc4548237/201810181003-Ramsey_lrv.mp4 | 2018 | Mathematics | Workshop/Interactive Format
Lecture | A field K is called pseudo-algebraically closed (PAC) if every absolutely irreducible variety defined over K has a K-rational point. These fields were introduced by Ax in his characterization of pseudo-finite fields and have since become an important object of model-theoretic study. A remarkable theorem of Chatzidakis proves that, in a precise sense, independent amalgamation in a PAC field is controlled by independent amalgamation in the absolute Galois group. We will describe how this theorem and a graph-coding construction of Cherlin, van den Dries, and Macintyre may be combined to construct PAC fields with prescribed model-theoretic properties. | English | 10.5446/59335 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Ramsey, Nick | null |
Strongly minimal groups interpretable in o-minimal expansions of fields | https://av.tib.eu/media/59336 | null | https://tib.flowcenter.de/mfc/medialink/3/debdc9f6b1b0360c5c30c4c6916d498e629e59ad73aaa6ced16d0b7065d2e9499412/201810181140-Hasson_lrv.mp4 | 2018 | Mathematics | Workshop/Interactive Format
Lecture | We prove that if D=(G,+,\dots) is a strongly minimal non-locally modular group interpretable in an o-minimal expansion of a field and dim(G)=2 then D interprets an algebraically closed field K and D (as a structure) an algebraic group over K with all the induced K-structure. I will discuss some key aspects of the proof that may be of interest on their own right. Joint work with Y. Peterzile and P. Eleftheriou. | English | 10.5446/59336 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Hasson, Assaf | null |
Pseudofinite groups, arithmetic regularity, and additive combinatorics | https://av.tib.eu/media/59337 | null | https://tib.flowcenter.de/mfc/medialink/3/de4cd58ab19ba11d3fb2c8c505c1f63a85cfd5363e34c6701dc75b1df686fe41e1/201810181231-Conant_lrv.mp4 | 2018 | Mathematics | Workshop/Interactive Format
Lecture | I will report on joint work with Pillay and Terry on arithmetic regularity (a group theoretic analogue of Szemeredi regularity for graphs) for sets of bounded VC-dimension in finite groups, which is proved using a local version generic compact domination for NIP formulas in pseudofinite groups. I will then present more recent work on nonabelian versions of certain "inverse theorems" from additive combinatorics, which are proved using pseudofinite model theory, and can be used to give alternate proofs of NIP arithmetic regularity for certain classes of finite groups. | English | 10.5446/59337 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Conant, Gabriel | null |
Groupoids and Relative Internality | https://av.tib.eu/media/59338 | null | https://tib.flowcenter.de/mfc/medialink/3/de8af0d0733d427f4a7b67cd3a4d82eb39b9a0303b8ffc516acedf77c9b40a68e9/201810181501-Jimenez_lrv.mp4 | 2018 | Mathematics | Workshop/Interactive Format
Lecture | We prove that in a stable theory, some 2-analysable types give rise to type definable groupoids, with some simplicial data attached to them, extending a well-know result linking groups to internal types. We then investigate how properties of these groupoids relate to properties of types. In particular, we expose some internality criteria. | English | 10.5446/59338 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Jimenez, Leo | null |
Transfer of the Ramsey property by semi-retractions | https://av.tib.eu/media/59339 | null | https://tib.flowcenter.de/mfc/medialink/3/de6a6197dbf9877f7dfdb58b78505d7f9856177e68f8fda860f2396e5c30a12250ff/201810181541-Scow_lrv.mp4 | 2018 | Mathematics | Workshop/Interactive Format
Lecture | In this talk we introduce a weaker form of bi-interpretability and see how it can be used to transfer the Ramsey property across classes in different first-order languages. This is a special case of a more general theorem about what we will call color-homogenizing embeddings. | English | 10.5446/59339 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Scow, Lynn | null |
Strongly minimal Steiner systems Paleolithic Stability theory | https://av.tib.eu/media/59340 | null | https://tib.flowcenter.de/mfc/medialink/3/de3346ab8d7193ebcbf6eba7dd4cabef354a24fe55be159344149bc71f98a73dae/201810181801-Baldwin_lrv.mp4 | 2018 | Mathematics | Workshop/Interactive Format
Lecture | With Gianluca Paolini (in preparation), we constructed families of strongly minimal Steiner (systemsforeveryk 3.Aquasigroupisastructurewithabinaryoperationsuchthatforeachequationxy=zthevaluesoftwoofthevariablesdeterminesauniquevalueforthethird.Hereweshowthatthe2^{ Steiner (2,3)-systems are definably coordinatized by strongly minimal Steiner quasigroups and the Steiner (2,4)-systems are definably coordinatized by strongly minimal SQS-Skeins. Further the Steiner (2,4)-systems admit Stein quasigroups but depending on the choice of theory may or may not admit a definable binary function and be definably coordinatized by an Steinquasigroup.WeexhibitstronglyminimaluniformSteinertriplesystems(withrespecttotheassociatedgraphsG(a,b)(CameronandWebb)withvaryingnumbersoffinitecycles.Weshowhowtovarythetheorytoobtain2or3$-transitivity. This work inaugurates a program of differentiating the many strongly minimal sets, whose geometries of algebraically closed sets may be (locally) isomorphic to the original Hrushovski example, but with varying properties in the object language. In particular, can one organize these geometries by studying the associated algebra. This work differs from traditional work in the infinite combinatorics of Steiner systems by considering the relationship among different models of the same first order theory. | English | 10.5446/59340 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Baldwin, John T. | null |
Algebraicity of p-adic groups | https://av.tib.eu/media/59341 | null | https://tib.flowcenter.de/mfc/medialink/3/de501f843f5e5c309c651926d7bb4467aeb79d2036f75e3b3b48353b8dffb50648d1/201810191107-Pillay_lrv.mp4 | 2018 | Mathematics | Workshop/Interactive Format
Lecture | null | English | 10.5446/59341 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Pillay, Anand | null |
Covariate data and spatial mapping | https://av.tib.eu/media/58304 | null | https://tib.flowcenter.de/mfc/medialink/3/dedc8b1ae3d67063c4d787e5d56d2a68472098c7ccd1b4b6b8b37f89c3790b3f7b/MOOD_Summer_School_8_William_Wint_Cedric_Marsboom.mp4 | 2022 | Computer Science | Conference/Talk | This talk first touched on why we use maps at all then look at the factors (“covariates”) that drive disease occurrence. The session led by William Wint (E.R.G.O., UK) & Cederic Marsboom (Avia-GIS, Belgium) examines what these covariates might be and identify the environmental, agricultural, socio-economic, ecological and climatic parameters that can best contribute to spatial modelling. It is also important to know where these data can be found, what are the pros and cons of different data sources for the common covariate variables, and what datasets can be used for different types of models. The available covariate data are not always in a form that is convenient for spatial modellers and the session will provide examples of the processing and selection needed to provide modellers with what they need. Finally, the use of selected covariates in spatial models is be discussed and illustrated with worked examples. | English | 10.5446/58304 (DOI) | CC Attribution 3.0 Germany:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Wint, William
Marsboom, Cedric | null |
Koszul modules and the Green conjecture | https://av.tib.eu/media/59196 | null | https://tib.flowcenter.de/mfc/medialink/3/de602d4444226ae6dc8e23fa1e3cc9ac88b9bc6d41f6a3f296309cb4e0697e6272/201806251404-Raicu_lrv.mp4 | 2018 | Mathematics
Physics | Workshop/Interactive Format
Lecture | I will discuss the basic theory of Koszul modules, which were originally introduced by Papadima and Suciu as a tool to study topological invariants of groups. A special instance of Koszul modules had previously appeared in David Eisenbud's "Green's conjecture: an orientation for algebraists", where he proposed several programs for proving the Green conjecture for generic canonical curves. I will explain a vanishing theorem for Koszul modules that completes one of these programs, providing an alternative approach to the original proof of Voisin for the generic Green conjecture. Joint work with M. Aprodu, G. Farkas, S. Papadima, and J. Weyman. | English | 10.5446/59196 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Raicu, Claudiu | null |
On a problem of Poincaré: Bounds on degrees of vector fields | https://av.tib.eu/media/59201 | null | https://tib.flowcenter.de/mfc/medialink/3/deeb1e612726bb6068887d97bb3cc9bac71cb765cd3fee937eaa8762b16397b4de/201806261031-Polini_lrv.mp4 | 2018 | Mathematics
Physics | Workshop/Interactive Format
Lecture | In 1891, Poincaré asked if it is possible to bound the degree of a projective plane curve that is left invariant by a vector field in terms of the degree of the vector field. In joint work with Chardin, Hassenzadeh, Simis, and Ulrich we address this question. The question can be restated as a problem about the initial degree of the module of derivations of the coordinate ring R of the curve modulo the Euler derivation in terms of invariants of R. We exhibit lower and upper bounds for this initial degree and in several instances we are able to determine the initial degree. Examples will be given to illustrate the situation. | English | 10.5446/59201 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Polini, Claudia | null |
Fibers of rational maps and Jacobian matrices | https://av.tib.eu/media/59203 | null | https://tib.flowcenter.de/mfc/medialink/3/de441fadd7f1de644c50f1a1e085753dbc2739e3043e987baf96ab29a45854bc89/201806261530-Chardin_lrv.mp4 | 2018 | Mathematics
Physics | Workshop/Interactive Format
Lecture | We study rational maps from a projective space of dimension two to another of dimension three, both over the same field. We will start by giving the general framework and first results obtained on this question by Botbol, Busé and myself. Then I will turn to questions concerning the fibers of dimension one that such a map can have and present two way to address this question, the first by Tran Quang Hoa, and the second by the same author together with Dale Cutkosky and myself. Examples show that our estimates are pretty sharp, but leave possibilities for improvement. | English | 10.5446/59203 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Chardin, Marc | null |
The absolutely Koszul and Backelin-Roos properties for spaces of quadrics of small codimension | https://av.tib.eu/media/59205 | null | https://tib.flowcenter.de/mfc/medialink/3/dee842f62ced353eb6159221c7c4cb5fdddb6afecb8d9fb55c5c0523ae1c948a1c69/201806261729-Sega_lrv.mp4 | 2018 | Mathematics
Physics | Workshop/Interactive Format
Lecture | null | English | 10.5446/59205 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Sega, Liana | null |
Regularity and h-polynomials of monomial ideals | https://av.tib.eu/media/59208 | null | https://tib.flowcenter.de/mfc/medialink/3/dec0a693c169fe623f2f351c97086b5f041a984e7c410f0803419497596d2c86c2/201806280905-Hibi_lrv.mp4 | 2018 | Mathematics
Physics | Workshop/Interactive Format
Lecture | null | English | 10.5446/59208 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Hibi, Takayuki | null |
Square-free Groebner degenerations | https://av.tib.eu/media/59209 | null | https://tib.flowcenter.de/mfc/medialink/3/dec992c154f579e85c30242edd4153b594952e1e9b664e78b0a989938a8cf4fbd4ef/201806281030-Varbaro_lrv.mp4 | 2018 | Mathematics
Physics | Workshop/Interactive Format
Lecture | Let S be a polynomial ring, I a homogeneous ideal and denote by in(I) the initial ideal of I w.r.t. some term order on S. It is well-known that depth(S/I) >= depth(S/in(I)) and reg(S/I) <= reg(S/in(I)), and it is easy to produce examples for which these inequalities are strict. On the other hand, in generic coordinates equalities hold for a degrevlex term order, by a celebrated result of Bayer and Stillman. In a joint paper with Aldo Conca, we prove that the equalities hold as well under the assumption that in(I) is a square-free monomial ideal (for any term order), solving a conjecture of Herzog. In this talk, after discussing where this conjecture came from, I will sketch the proof of its solution. | English | 10.5446/59209 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Varbaro, Matteo | Conca, Aldo |
O_X regularity bound for smooth varieties with classification of extremal and next to extremal examples | https://av.tib.eu/media/59213 | null | https://tib.flowcenter.de/mfc/medialink/3/dee437fc1dbe1c474ac1126b3d613456dd6e053f557c15a4c02b859a0273962447/201806290901-Kwak_lrv.mp4 | 2018 | Mathematics
Physics | Workshop/Interactive Format
Lecture | null | English | 10.5446/59213 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Kwak, Sijong | null |
Lefschetz properties of fiber products and connected sums | https://av.tib.eu/media/59212 | null | https://tib.flowcenter.de/mfc/medialink/3/dee5ff81a447eb70c9bbed1d73cd565fd80caa84f15e10b4feb660c3ab84f81755/201806281730-Seceleanu_lrv.mp4 | 2018 | Mathematics
Physics | Workshop/Interactive Format
Lecture | The Lefschetz properties are desirable algebraic properties of graded artinian algebras inspired by the Hard Lefschetz Theorem for cohomology rings of complex projective varieties. A standard way to create new varieties from old is by forming connected sums. This corresponds at the level of their cohomology rings to an algebraic operation also termed a connected sum, which has recently started to be investigated in commutative algebra by Ananthnarayan-Avramov-Moore. It is natural to ask whether abstract algebraic connected sums of graded Gorenstein artinian algebras enjoy the Lefschetz properties in the absence of any underlying topological information. We investigate this question as well as the analogous question concerning a closely related construction, the fibered product. | English | 10.5446/59212 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Seceleanu, Alexandra | McDaniel, Chris |
h-vectors and the number of generators of fundamental groups | https://av.tib.eu/media/59214 | null | https://tib.flowcenter.de/mfc/medialink/3/de527a3d42cd4d6856bcf9a04e4440135c305b3bbf1b313a3c6cd02dca344c84a6ff/201806291015-Murai_lrv.mp4 | 2018 | Mathematics
Physics | Workshop/Interactive Format
Lecture | Hochster's results tell that homology groups of a simplicial complex have a nice relation to algebraic properties of its Stanley-Reisner ring. On the other hand, it is unknown that how fundamental groups affect to Stanley-Reisner rings. In this talk, we present lower bounds of the second h-number of simplicial complexes in terms of the number of generators of fundamental groups. Our proof is based on recent results about PL Morse inequality and graded Betti numbers. | English | 10.5446/59214 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Murai, Satoshi | null |
Large-time behavior in hypocoercive BGK-models | https://av.tib.eu/media/59169 | null | https://tib.flowcenter.de/mfc/medialink/3/de6839f2852fa73fe3525f362748c7df3c65e3f9560ae7b7d1a60bc797fc48f876/201804101407-Arnold_lrv.mp4 | 2018 | Life Sciences
Mathematics
Physics | Workshop/Interactive Format
Lecture | BGK equations are kinetic transport equations with a relaxation operator that drives the phase space distribution towards the spatially local equilibrium, a Gaussian with the same macroscopic parameters. Due to the absence of dissipation w.r.t. the spatial direction, convergence to the global equilibrium is only possible thanks to the transport term that mixes various positions. Hence, such models are hypocoercive. We shall prove exponential convergence towards the equilibrium with explicit rates for several linear, space periodic BGK-models in dimension 1 and 2. Their BGK-operators differ by the number of conserved macroscopic quantities (like mass, momentum, energy), and hence their hypocoercivity index. Our discussion includes also discrete velocity models, and the local exponential stability of a nonlinear BGK-model. The proof is based, first, on a Fourier decomposition in space and Hermite function decomposition in velocity. Then, the crucial step is to construct a problem adapted Lyapunov functional, by introducing equivalent norms for each mode. | English | 10.5446/59169 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Arnold, Anton | Achleitner, Franz
Carlen, Eric |
Minimizers and gradient flows in the slow diffusion limit | https://av.tib.eu/media/59164 | null | https://tib.flowcenter.de/mfc/medialink/3/de09b33b418ba9a3df5173ab5c5cebfbea0c83acf9f52794ea2d5c30ed48152698d839/201804091601-Craig_lrv.mp4 | 2018 | Life Sciences
Mathematics
Physics | Workshop/Interactive Format
Lecture | For a range of physical and biological processes—from dynamics of granular media to biological swarming—the evolution of a large number of interacting agents is modeled according to the competing effects of pairwise attraction and (possibly degenerate) diffusion. We prove that, in the slow diffusion limit, the degenerate diffusion becomes a hard height constraint on the density of the population, as arises in models of pedestrian crown motion. We then apply this to develop numerical insight for open conjectures in geometric optimization. | English | 10.5446/59164 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Craig, Katy | Topaloglu, I. |
Towards a gradient flow for microstructure: microstructure meets Boltzmann | https://av.tib.eu/media/59159 | null | https://tib.flowcenter.de/mfc/medialink/3/de6170ab78ae7a0b29803453cbd7cfeaeb2f9db3ef8310b889a76d673533ccf851/201804090901-Kinderlehrer_lrv.mp4 | 2018 | Life Sciences
Mathematics
Physics | Workshop/Interactive Format
Lecture | A central problem of microstructure is to develop technologies capable of producing an arrangement, or ordering, of the material, in terms of mesoscopic parameters like geometry and crystallography, appropriate for a given application. Is there such an order in the first place? We describe very briefly the emergence of the grain boundary character distribution (GBCD), a statistic that details texture evolution, and illustrate why it should be considered a material property. Its identification as a gradient flow by our method is tantamount to exhibiting the harvested statistic as the iterates in a mass transport JKO implicit scheme, which we found astonishing. Consequently the GBCD is the solution, in some sense, of a Fokker-Planck Equation. The development exposes the question of how to understand the circumstances under which a harvested empirical statistic is a property of the underlying process. (joint work with P. Bardsley, K. Barmak, E. Eggeling, M. Emelianenko, Y. Epshteyn, X.-Y. Lu and S. Ta'asan). | English | 10.5446/59159 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Kinderlehrer, David | null |
Entropy and the Kac Master Equation | https://av.tib.eu/media/59176 | null | https://tib.flowcenter.de/mfc/medialink/3/de85f3f8b20ad052f671b29139a7f7058e85e18b851506ade76b3018652b200a4e/201804111037-Loss_lrv.mp4 | 2018 | Life Sciences
Mathematics
Physics | Workshop/Interactive Format
Lecture | The Kac master equation models the behavior of a large number of randomly colliding particles. Due to its simplicity it allows, without too much pain, to investigate a number of issues. E.g., Mark Kac, who invented this model in 1956, used it to give a simple derivation of the spatially inhomogeneous Boltzmann equation. One important issue is the rate of approach to equilibrium, which can be analyzed in various ways, using, e.g., the gap or the entropy. Explicit entropy estimates will be discussed for a Kac type master equation modeling the interaction of a finite system with a large but finite reservoir. This is joint work with Federico Bonetto, Alissa Geisinger and Tobias Ried. | English | 10.5446/59176 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Loss, Michael | null |
Moduli spaces of parabolic connections, parabolic bundles and Geometric Langlands | https://av.tib.eu/media/13753 | null | https://tib.flowcenter.de/mfc/medialink/3/dee527c4ba760cdd2633152a3a708ecd15a75a206d20c25c5cca71693c92b97ad25e/201809130900-Saito_lrv.mp4 | 2018 | Mathematics
Physics | Workshop/Interactive Format
Lecture | Moduli spaces of stable parabolic connections on curves are very interesting objects which are related to different area of mathematics like algebraic geometry, integrable systems, mathematical physics and Geometric Langlands conjecture. In this lecture, we will explain about an explicit geometry of the moduli spaces of stable parabolic connections on curves introduced and constructed by Inaba, Iwasaki and Saito and Inaba. Then we will review a work of Arinkin and Lysenko on a rank 2 connections on the projective line with 4 singular points, which is related to Geometric Langlands conjecture in this case. We then explain about the joint work on the moduli space of rank 2 parabolic bundles on the projective line with Simpson and Loray. If time permits, related works of Geometric Langlands conjecture in these cases may be discussed. | English | 10.5446/13753 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Saito, Masa-Hiko | null |
A surface moving mesh method based on equidistribution and alignment | https://av.tib.eu/media/59118 | null | https://tib.flowcenter.de/mfc/medialink/3/de36f2c5466cca76cce7db8d064834314dcd05556aba1accb7bbb3964896b216f6/201805291330-Kolasinski_lrv.mp4 | 2018 | Computer Science
Mathematics
Physics | Workshop/Interactive Format
Lecture | Given a mesh on a surface, our goal is to improve the quality of the mesh using a moving mesh method. To this goal, we will construct a surface moving mesh method based on mesh equidistribution and alignment conditions. We will then discuss several proven advantages of this surface moving mesh approach. Finally, we will study various numerical examples using both the Euclidean metric and a Riemannian metric. | English | 10.5446/59118 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Kolasinski, Avary | Huang, Weizhang |
Spectral Theory for the Transmission Eigenvalue Problem | https://av.tib.eu/media/58952 | null | https://tib.flowcenter.de/mfc/medialink/3/dec5300fe564aa282dbcb3c63b7baf3227db47a78f41526b6fdcc8459230c1bf2c/201807021551-Colton_lrv.mp4 | 2018 | Computer Science
Mathematics
Engineering | Workshop/Interactive Format
Lecture | The transmission eigenvalue problem plays a central role in inverse scattering theory. This is a non-selfadjoint problem for a coupled pair of partial differential equations in a bounded domain corresponding to the support of the scattering object. Unfortunately, relatively little is known about the spectrum of this problem. In this talk I will consider the simplest case of the transmission eigenvalue problem for which the domain and eigenfunctions are spherically symmetric. In this case the transmission eigenvalue problem reduces to an eigenvalue problem for ordinary differential equations. Through the use of the theory of entire functions of a complex variable, I will show that there is a remarkable diversity in the behavior of the spectrum of this problem depending on the behavior of the refractive index near the boundary. Included in my talk will be results on the existence of complex eigenvalues, the inverse spectral problem and a remarkable connection (due to Fioralba Cakoni and Sagun Chanillo) between the location of transmission eigenvalues for automorphic solutions of the wave equation in the hyperbolic plane and the Riemann hypothesis. | English | 10.5446/58952 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Colton, David | null |
Funding opportunities for German-Ukrainian collaborations | https://av.tib.eu/media/59318 | null | https://tib.flowcenter.de/mfc/medialink/3/de36a1905b53e54d9c3648dcbdb4adbe0d6deca9fa8623c7b1aa32b8564743a76b/Seumenicht_Funding_opportunities_for_German-Ukrainian_1.mp4 | 2022 | Information Science | Conference/Talk | null | English | 10.5446/59318 (DOI) | CC Attribution 3.0 Germany:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Seumenicht, Oksana | null |
European and national funding for Ukrainian researchers | https://av.tib.eu/media/59319 | null | https://tib.flowcenter.de/mfc/medialink/3/de341a8631077da013763f78ae3b0ff7ce9dbbcb9518f420cca03ca1ce79cd2525/Bondarenko_European_and_national_funding_for_Ukrainian_researchers.mp4 | 2022 | Information Science | Conference/Talk | null | English | 10.5446/59319 (DOI) | CC Attribution 3.0 Germany:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Bondarenko, Vitali | null |
"Diverschance_East – Global competence development and diversity challenges in an innovative Europe" and "Promotion of intercultural and refugee-specific competence for refugees and host societies during the Russia-Ukraine crisis" | https://av.tib.eu/media/59296 | null | https://tib.flowcenter.de/mfc/medialink/3/ded609f75358a7df1802a72052feb8d7bd94cb61c553d03614a54e49860c0a87c4/Herbst_Diverschance_East_____Global_competence_development.mp4 | 2022 | Information Science | Conference/Talk | null | English | 10.5446/59296 (DOI) | CC Attribution 3.0 Germany:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Herbst, Jonathan
Genkova Petkova, Petia
Jasper, Dieter | null |
FAIR Research Information in Open Infrastructures | https://av.tib.eu/media/59297 | null | https://tib.flowcenter.de/mfc/medialink/3/de1fe26f8602718693c6c79862f81be1caa5d769396220f9b7312ba223a2adc1b2/Hauschke_Kaliuzhna_FAIR_Research_Information_in_OI.mp4 | 2022 | Information Science | Conference/Talk | null | English | 10.5446/59297 (DOI) | CC Attribution 3.0 Germany:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Hauschke, Christian
Kaliuzhna, Nataliia | null |
Dissecting the molecular mechanisms of neurodegeneration using a Drosophila neuropathy model | https://av.tib.eu/media/59312 | null | https://tib.flowcenter.de/mfc/medialink/3/dece064bb8016dd0f404a7bf5c30bd676ce06b8b3e822e48f15459fb8a241949c7f2/Shcherbata_Dissecting_the_molecular_mechanisms_of_neurodegeneration.mp4 | 2022 | Information Science | Conference/Talk | null | English | 10.5446/59312 (DOI) | CC Attribution 3.0 Germany:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Shcherbata, Halyna R. | null |
Development of a simulator for terrestrial laser scanning as a powerful tool for distance learning | https://av.tib.eu/media/59313 | null | https://tib.flowcenter.de/mfc/medialink/3/de9af4bba3fba1c2d7e348e0f01105dd049d55a23abdeb29ea4a11683331431866/Lumann_Development_of_Simulator.mp4 | 2022 | Information Science | Conference/Talk | null | English | 10.5446/59313 (DOI) | CC Attribution 3.0 Germany:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Luhmann, Thomas | null |
Academic Cooperation with Ukraine | https://av.tib.eu/media/59314 | null | https://tib.flowcenter.de/mfc/medialink/3/defff6eb067b5c5c8e2aef4e142999477478da147ac7163d7eee7bee23d3ef7060fc/Butych_LUH_Acadmic_Cooperation_with_Ukraine.mp4 | 2022 | Information Science | Conference/Talk | null | English | 10.5446/59314 (DOI) | CC Attribution 3.0 Germany:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Butych, Nataliya | null |
"The Representation of Migration in Visual Media" and "Peace Education in Ukraine and Georgia" | https://av.tib.eu/media/59315 | null | https://tib.flowcenter.de/mfc/medialink/3/de63ec018306a5c7417c54f5a021fc7ac2adb5910354b57e72035aacf6f444e888/Heide_ERASMUS.mp4 | 2022 | Information Science | Conference/Talk | null | English | 10.5446/59315 (DOI) | CC Attribution 3.0 Germany:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Heide, Markus | null |
Increase of α-dicarbonyls in liver and receptor for advanced glycation end products on immune cells are linked to nonalcoholic fatty liver disease and liver cancer | https://av.tib.eu/media/59317 | null | https://tib.flowcenter.de/mfc/medialink/3/de04813f404302efec36f9e95df931d9be39db1ee42ba27249ae71fd5adc962039/Petriv_Increase_of.mp4 | 2022 | Information Science | Conference/Talk | null | English | 10.5446/59317 (DOI) | CC Attribution 3.0 Germany:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Petriv, Nataliia | null |
Private k-Means with Constant Multiplicative Error | https://av.tib.eu/media/59272 | null | https://tib.flowcenter.de/mfc/medialink/3/de45f5200668ac65f026eb71d891ffbc0afa76d5b9efc8f7aa0ef34de65b74a84d/201804301047-Stemmer_lrv.mp4 | 2018 | Computer Science
Mathematics | Workshop/Interactive Format
Lecture | null | English | 10.5446/59272 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Stemmer, Uri | Kaplan, Haim
Nissim, Kobbi
Vadhan, Salil |
Model-Agnostic Private Learning | https://av.tib.eu/media/59273 | null | https://tib.flowcenter.de/mfc/medialink/3/de762ee93e7b4a3c3c8ac2f74d652f40d16a06a92fbaa92bfd6102d95e65627c32/201804300914-Bassily_lrv.mp4 | 2018 | Computer Science
Mathematics | Workshop/Interactive Format
Lecture | null | English | 10.5446/59273 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Bassily, Raef | Thakkar, Om
Thakurta, Abhradeep |
Concentrated Differential Privacy | https://av.tib.eu/media/59274 | null | https://tib.flowcenter.de/mfc/medialink/3/dea0ed1ed4a4f0e6904a92b6562b0b745f1e50eff66a266ec7bb5f876b0665872b/201804301426-Steinke_lrv.mp4 | 2018 | Computer Science
Mathematics | Workshop/Interactive Format
Lecture | null | English | 10.5446/59274 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Steinke, Thomas | null |
On Algorithmic Fairness Between Groups and Individuals | https://av.tib.eu/media/59275 | null | https://tib.flowcenter.de/mfc/medialink/3/de157884623f6732841c40e699dc49b212bef0ffbb112e10bca8eeb62f9edd28bf/201804301551-Reingold_lrv.mp4 | 2018 | Computer Science
Mathematics | Workshop/Interactive Format
Lecture | null | English | 10.5446/59275 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Reingold, Omer | null |
A Hybrid of Advocacy and Modeling for Differential Privacy | https://av.tib.eu/media/59276 | null | https://tib.flowcenter.de/mfc/medialink/3/ded48ea3e25df0c5e83887db39df2808214243e0bb2a97c79452a9884f49bd47ae/201805010906-Korolova_lrv.mp4 | 2018 | Computer Science
Mathematics | Workshop/Interactive Format
Lecture | null | English | 10.5446/59276 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Korolova, Aleksandra | null |
Differential Privacy for Functional Data Analysis | https://av.tib.eu/media/59278 | null | https://tib.flowcenter.de/mfc/medialink/3/deb3caa7d70c4cc477b4283a4b11889b84bfa9245f4184bf14a3b3168c9b63586b/201805010947-Reimherr_lrv.mp4 | 2018 | Computer Science
Mathematics | Workshop/Interactive Format
Lecture | null | English | 10.5446/59278 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Reimherr, Matthew | null |
PSI: A (differentially) private data-sharing interface | https://av.tib.eu/media/59279 | null | https://tib.flowcenter.de/mfc/medialink/3/dee461bc9a29163b8b5e976e301f68856ceb195c5c23e5c447312c07313a4824afad/201805011050-Vadhan_lrv.mp4 | 2018 | Computer Science
Mathematics | Workshop/Interactive Format
Lecture | null | English | 10.5446/59279 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Vadhan, Salil | N. N. (Moderation) |
Generative Adversarial Privacy | https://av.tib.eu/media/59280 | null | https://tib.flowcenter.de/mfc/medialink/3/de0f6df7cc943be59ac012b905792012345f34d3e95a5c5c5c5c5ae6ad789f864fefca/201805011335-Kairouz_lrv.mp4 | 2018 | Computer Science
Mathematics | Workshop/Interactive Format
Lecture | null | English | 10.5446/59280 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Kairouz, Peter | null |
Local Differential Privacy for Evolving Data | https://av.tib.eu/media/59281 | null | https://tib.flowcenter.de/mfc/medialink/3/de08fd2bccd28a529c5a641e8e1c6cec010760402fefd15420e7adf6113f5c5c0815/201805011416-Waggoner_lrv.mp4 | 2018 | Computer Science
Mathematics | Workshop/Interactive Format
Lecture | null | English | 10.5446/59281 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Waggoner, Bo | null |
Individual Sensitivity Preprocessing for Data Privacy | https://av.tib.eu/media/59282 | null | https://tib.flowcenter.de/mfc/medialink/3/de5e29026bd32c834f66c72c18960f9ce01cf79c24cf77103d0412d14febea3873/201805011451-Cummings_lrv.mp4 | 2018 | Computer Science
Mathematics | Workshop/Interactive Format
Lecture | null | English | 10.5446/59282 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Cummings, Rachel | Durfee, David
Tech, Georgia |
End-to-End Analysis of PATE | https://av.tib.eu/media/59283 | null | https://tib.flowcenter.de/mfc/medialink/3/dea93495db5d4bc93195b09b683a3c6c0444e45391666776a4e813a3f165933fee/201805011552-Mironov_lrv.mp4 | 2018 | Computer Science
Mathematics | Workshop/Interactive Format
Lecture | null | English | 10.5446/59283 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Mironov, Ilya | null |
Privacy-preserving prediction | https://av.tib.eu/media/59284 | null | https://tib.flowcenter.de/mfc/medialink/3/de13a226db075c5c2ce2f297f928f866c22c970ba3285997a4c5a2387bb26510f15d/201805011632-Feldman_lrv.mp4 | 2018 | Computer Science
Mathematics | Workshop/Interactive Format
Lecture | null | English | 10.5446/59284 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Feldman, Vitaly | Dwork, Cynthia |
Revisiting Differentially Private Matrix Completion | https://av.tib.eu/media/59285 | null | https://tib.flowcenter.de/mfc/medialink/3/de86410b4119bcf8f8c75c30e3df8e0e39b9e7361fafe327dd790d31f13471f48ad5/201805020907-Thakkar_lrv.mp4 | 2018 | Computer Science
Mathematics | Workshop/Interactive Format
Lecture | null | English | 10.5446/59285 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Thakkar, Om | null |
Privacy Amplification by Iteration | https://av.tib.eu/media/59286 | null | https://tib.flowcenter.de/mfc/medialink/3/de1195103c560538380310a59fc54493fcec1a6de546f2d7ecc0c0471675902c59/201805020936-Talwar_lrv.mp4 | 2018 | Computer Science
Mathematics | Workshop/Interactive Format
Lecture | null | English | 10.5446/59286 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Talwar, Kunal | Feldman, Vitaly
Thakurta, Abhradeep |
Bayesian models for adaptive data analysis | https://av.tib.eu/media/59287 | null | https://tib.flowcenter.de/mfc/medialink/3/de22bb7b9b9ecd0b20ae534b2f346633817893253d9d01997c4dccb2db017a39dd/201805021055-Smith_lrv.mp4 | 2018 | Computer Science
Mathematics | Workshop/Interactive Format
Lecture | null | English | 10.5446/59287 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Smith, Adam | null |
Geometric Algorithms for Query Release | https://av.tib.eu/media/59289 | null | https://tib.flowcenter.de/mfc/medialink/3/dec73c7324a7589a0ef3b002841b104b3ba6c60389cf5c30614d681ab75321aabe31/201805031033-Nikolov_lrv.mp4 | 2018 | Computer Science
Mathematics | Workshop/Interactive Format
Lecture | null | English | 10.5446/59289 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Nikolov, Aleksandar (Sasho) | Steinke, Thomas
Bun, Mark
Blasiok, Jaroslaw |
Privately learning high-dimensional distributions | https://av.tib.eu/media/59290 | null | https://tib.flowcenter.de/mfc/medialink/3/de03a9e5601dd4d3d68ec5568c258baeb7df4e43ea7f9edfd9b0433141a2c27087/201805031336-Ullman_lrv.mp4 | 2018 | Computer Science
Mathematics | Workshop/Interactive Format
Lecture | null | English | 10.5446/59290 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Ullman, Jonathan | null |
Differentially Private Hypothesis Testing and Property Estimation | https://av.tib.eu/media/59291 | null | https://tib.flowcenter.de/mfc/medialink/3/de6731847db7148e48a386864d194882650f522dc1e23e8ac6c804c4bbfdeee3f2/201805031455-Kamath_lrv.mp4 | 2018 | Computer Science
Mathematics | Workshop/Interactive Format
Lecture | null | English | 10.5446/59291 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Kamath, Gautam | null |
Accuracy First: Selecting a DP Level for Accurate ERM | https://av.tib.eu/media/59292 | null | https://tib.flowcenter.de/mfc/medialink/3/de266ed5dcca613c6e2501a2479b0dfe158944c406a9d7a96d298a2be8fc5fafaf/201805031553-Neel_lrv.mp4 | 2018 | Computer Science
Mathematics | Workshop/Interactive Format
Lecture | null | English | 10.5446/59292 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Neel, Seth V. | null |
Privacy-Preserving GANs Support Clinical Data Sharing | https://av.tib.eu/media/59293 | null | https://tib.flowcenter.de/mfc/medialink/3/de9901605d257f356a32c940a38f7f2998722cdc06e3981725614ccca79d7dd70c/201805031941-Wu_lrv.mp4 | 2018 | Computer Science
Mathematics | Workshop/Interactive Format
Lecture | null | English | 10.5446/59293 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Wu, Steven | null |
Preventing Fairness Gerrymandering: Auditing and Learning for Subgroup Fairness | https://av.tib.eu/media/59294 | null | https://tib.flowcenter.de/mfc/medialink/3/de109b5af6b2d83139e6662e9b5c30945c30487a5c5c3bd91ce1f33e2a0803b46f626f08/201805040949-Neel_lrv.mp4 | 2018 | Computer Science
Mathematics | Workshop/Interactive Format
Lecture | null | English | 10.5446/59294 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Neel, Seth | Kearns, Michael
Roth, Aaron |
Eta-invariants on pin manifolds and time-reversal symmetry | https://av.tib.eu/media/13742 | null | https://tib.flowcenter.de/mfc/medialink/3/de859a10dceafd809c80472fd94561dea764855c3021691d549764e372e1e8cb99d5/201804170902-Freed.mp4 | 2018 | Mathematics
Physics | Workshop/Interactive Format
Lecture | null | English | 10.5446/13742 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Freed, Daniel | null |
Geometric quantization and the equivariant Verlinde formula | https://av.tib.eu/media/59246 | null | https://tib.flowcenter.de/mfc/medialink/3/deeb5b5126e7ad35bc7736efb76ce3f00a2af7424d29a284b417d2f8cd98523318/201804160901-Gukov_lrv.mp4 | 2018 | Mathematics
Physics | Workshop/Interactive Format
Lecture | null | English | 10.5446/59246 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Gukov, Sergei | null |
Semi-classical limits and the graded equivariant Todd class | https://av.tib.eu/media/59247 | null | https://tib.flowcenter.de/mfc/medialink/3/de7aaaf40cfaa9a518b1675993181463bdb2a7d002a7fcd6d12b37fc50d2db3346/201804161041-Vergne_lrv.mp4 | 2018 | Mathematics
Physics | Workshop/Interactive Format
Lecture | null | English | 10.5446/59247 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Vergne, Michèle | null |
Quantization of Hamiltonian loop group spaces | https://av.tib.eu/media/59248 | null | https://tib.flowcenter.de/mfc/medialink/3/de10105a1de0fa8c59c8bc60349ddad324cc67811baa9293f53e40741a9e2d6787/201804161403-Loizides_lrv.mp4 | 2018 | Mathematics
Physics | Workshop/Interactive Format
Lecture | I will describe a map from `D-cycles' for the twisted K-homology of a compact, connected, simply connected Lie group to the Verlinde ring. The induced map on K-homology is inverse to the Freed-Hopkins-Teleman isomorphism. An application is to show that two options for `quantizing' a Hamiltonian loop group space are compatible with each other. This talk is partly based on joint work with Eckhard Meinrenken and Yanli Song. | English | 10.5446/59248 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Loizides, Yiannis | null |
Fusion in loop spaces | https://av.tib.eu/media/59249 | null | https://tib.flowcenter.de/mfc/medialink/3/de0f3f5376989556a33085e5fedfe3e0bc0aaab497cbf56c393798fbe39091acfd/201804161446-Waldorf_lrv.mp4 | 2018 | Mathematics
Physics | Workshop/Interactive Format
Lecture | null | English | 10.5446/59249 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Waldorf, Konrad | null |
Multigerbes: a new theory of higher gerbes | https://av.tib.eu/media/59250 | null | https://tib.flowcenter.de/mfc/medialink/3/dea30ff49c099da4b3ca11b9d6506d80da39abf6d6f613a2c40a885c30e6c1099d5c5c/201804161602-Kottke_lrv.mp4 | 2018 | Mathematics
Physics | Workshop/Interactive Format
Lecture | Complex line bundles are classified naturally up to isomorphism by degree two integer cohomology H2, and it is of interest to find geometric objects which are similarly associated to higher degree cohomology. Gerbes (of which there are various versions, due respectively to Giraud, Brylinski, Hitchin and Chattergee, and Murray) provide a such theory associated to H3. Various notions of"higher gerbes" have also been defined, though these tend to run into technicalities and complicted bookkeeping associated with higher categories. We propose a new geometric version of higher gerbes in the form of "multi simplicial line bundles", a pleasantly concrete theory which avoids many of the higher categorical difficulties, yet still captures key examples including the string (aka loop spin) obstruction associated to 12 p1 in H4. In fact, every integral cohomology class is represented by one of these objects in the guise of a line bundle on the iterated free loop space equipped with a "fusion product" (as defined by Stolz and Teichner and further developed by Waldorf) for each loop factor. | English | 10.5446/59250 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Kottke, Chris | Melrose, Richard |
Geometric quantization with metaplectic-c structures | https://av.tib.eu/media/59251 | null | https://tib.flowcenter.de/mfc/medialink/3/de43e6b58f3791a102dadb0b1f5db4b367ce99a333d5ac3434881e049873ca12b5/201804161650-Karshon_lrv.mp4 | 2018 | Mathematics
Physics | Workshop/Interactive Format
Lecture | In the classical geometric quantization procedure with the "half-form correction", one cannot quantize a complex projective space of even complex dimension (there is no "half form bundle"), and one cannot equivariantly quantize any symplectic toric manifold (there is no "equivariant half form bundle"). I will describe a geometric quantization procedure that uses metaplectic-c structures to incorporate the "half form correction" into the prequantization stage and that does apply to these examples. This follows work of Harald Hess from the late 1970s, with recent contributions of Jennifer Vaughan. | English | 10.5446/59251 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Karshon, Yael | null |
Discrete series representations, the Dirac operator and C*-algebra K-theory | https://av.tib.eu/media/59252 | null | https://tib.flowcenter.de/mfc/medialink/3/deb6e060bfabee3043a8432c4bf972924609c9589bb0b0581e0651414d7c5c304fac/201804171032-Higson_lrv.mp4 | 2018 | Mathematics
Physics | Workshop/Interactive Format
Lecture | This is an expository talk about C*-algebra K-theory for reductive groups. I’ll try to explain what it is, what it actually says about representation theory, and what else it suggests about representation theory, at least to a willing mind. The story begins with Harish-Chandra’s parametrization of the discrete series representations, and the realization of discrete series representations using the Dirac operator. I’ll discuss these things, and then touch on other parts of Harish-Chandra’s theory of tempered representations that are prominent from the K-theoretic point of view. | English | 10.5446/59252 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Higson, Nigel | null |
Orbital integral and character of representations | https://av.tib.eu/media/59253 | null | https://tib.flowcenter.de/mfc/medialink/3/dea5e73f34de47a24bf0b34276bc8f7166b0442d4890866d55c019d30bf56f8d89/201804171335-Song_lrv.mp4 | 2018 | Mathematics
Physics | Workshop/Interactive Format
Lecture | In 1980s, Connes and Moscovici studied index theory of G-invariant elliptic pseudo-differential operators acting on non-compact homogeneous spaces. They proved a L2 -index formula using the heat kernel method, which is related to the discrete series representation of Lie groups. In this talk, I will discuss the orbital integral of heat kernel and its relation with Plancherel formula. This is a generalization of the analytic index studied by Connes-Moscovici to the limit of discrete series case. In a recent work by Hochs-Wang, they obained a fixed point theorem for the topogical side of the index. | English | 10.5446/59253 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Song, Yanli | Tang, Xiang
Higson, N. |
K-theory, fixed point theorem and representation of semisimple Lie groups | https://av.tib.eu/media/59254 | null | https://tib.flowcenter.de/mfc/medialink/3/dedc4008097d0626a22bdbc3fb5a0c2852c0f593821bb0b3b62acf4e19bfe1ea62/201804171422-Wang_lrv.mp4 | 2018 | Mathematics
Physics | Workshop/Interactive Format
Lecture | K-theory of reduced group C∗-algebras and their trace maps can be used to study tempered representations of a semisimple Lie group from the point of view of index theory. For a semisimple Lie group, every K-theory generator can be viewed as the equivariant index of some Dirac operator, but also interpreted as a (family of) representation(s) parametrised by A in the Levi component of a cuspidal parabolic subgroup. In particular, if the group has discrete series representations, the corresponding K-theory classes can be realised as equivariant geometric quantisations of the associated coadjoint orbits. Applying orbital traces to the K-theory group, we obtain a fixed point formula which, when applied to this realisation of discrete series, recovers Harish-Chandra's character formula for the discrete series on the representation theory side. This is a noncompact analogue of Atiyah-Segal-Singer fixed point theorem in relation to the Weyl character formula. This is joint work with Peter Hochs. | English | 10.5446/59254 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Wang, Hang | null |
G-invariant holomorphic Morse inequalities | https://av.tib.eu/media/59255 | null | https://tib.flowcenter.de/mfc/medialink/3/de0ea554c9a3fb1a5c5c02b123504b5bd335c55ba1f1c4e38f146c2e2485623ab4b4/201804171531-Puchol_lrv.mp4 | 2018 | Mathematics
Physics | Workshop/Interactive Format
Lecture | Consider an action of a connected compact Lie group on a compact complex manifold M, and two equivariant vector bundles L and E on M, with L of rank 1. The purpose of this talk is to establish holomorphic Morse inequalities, analogous to Demailly's one, for the invariant part of the Dolbeault cohomology of tensor powers of L, twisted by E. To do so, we define a moment map μ by the Kostant formula and then the reduction of M under a natural hypothesis on μ−1(0). Our inequalities are given in term of the curvature of the bundle induced by L on this reduction, in the spirit of "quantization commutes with reduction". | English | 10.5446/59255 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Puchol, Martin | null |
From factorization algebras to functorial field theories | https://av.tib.eu/media/59256 | null | https://tib.flowcenter.de/mfc/medialink/3/deeb0b341e42a4f39a38e28c81da115499c5deddca15a0680482d0c929708fb33c/201804171625-Stolz_lrv.mp4 | 2018 | Mathematics
Physics | Workshop/Interactive Format
Lecture | null | English | 10.5446/59256 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Stolz, Stephan | null |
K-types of tempered representations | https://av.tib.eu/media/59257 | null | https://tib.flowcenter.de/mfc/medialink/3/de4f49ad5c5c092b0bb28cc285807571906ad3b7f6c45c308648a27c851db817249147/201804180902-Hochs_lrv.mp4 | 2018 | Mathematics
Physics | Workshop/Interactive Format
Lecture | Let G be a real semisimple Lie group, and K<G a maximal compact subgroup. A tempered representation π of G is an irreducible representation that occurs in the Plancherel decomposition of L2(G). The restriction π|K of π to K contains a substantial amount of information about π. (This is roughly analogous to the fact that an irreducible representation of K is determined by its restriction to a maximal torus.) By realising this restriction as the geometric quantisation of a suitable space, which is a coadjoint orbit under a regularity assumption on π, we can apply a suitable version of the quantisation commutes with reduction principle to obtain geometric expressions for the multiplicities of the irreducible representations of K in π|K (the K-types of π). This was done for the discrete series by Paradan in 2003. In recent joint work with Song and Yu, we extended this to arbitrary tempered representation. The resulting multiplicity formula was obtained in a different way for tempered representations with regular parameters by Duflo and Vergne in 2011. In independent work in progress with Higson and Song, we give a new proof of Blattner's formula for multiplicities of K-types of discrete series representations using geometric quantisation. This formula was first proved by Hecht and Schmid in 1975, and later by Duflo, Heckman and Vergne in 1984. | English | 10.5446/59257 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Hochs, Peter | null |
A Gutzwiller type trace formula for the magnetic Dirac operator | https://av.tib.eu/media/59258 | null | https://tib.flowcenter.de/mfc/medialink/3/de0e4e77899beacf1e35f5ac539b6f13723c3c9bd472f7a6bca558c0ddca39bcbb/201804180949-Savale_lrv.mp4 | 2018 | Mathematics
Physics | Workshop/Interactive Format
Lecture | For manifolds including metric-contact manifolds with non-resonant Reeb flow, we prove a Gutzwiller type trace formula for the associated magnetic Dirac operator involving contributions from Reeb orbits on the base. As an application, we prove a semiclassical limit formula for the eta invariant. | English | 10.5446/59258 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Savale, Nikhil | null |
Hochschild Homology of Proper Lie Groupoids | https://av.tib.eu/media/59259 | null | https://tib.flowcenter.de/mfc/medialink/3/de7dd818c803d53f1e34d379fe474b3a92c6f8153199263864fb1645ffa9a3c095/201804181102-Tang_lrv.mp4 | 2018 | Mathematics
Physics | Workshop/Interactive Format
Lecture | For a compact Lie group action on a smooth manifold, we will introduce a complex of basic relative forms on the inertia space, which was originally constructed by Brylinski. We will explain how basic relative forms can be used to study the Hochschild homology of the convolution algebra. This is work in progress with Markus Pflaum and Hessel Posthuma. | English | 10.5446/59259 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Tang, Xiang | null |
Hypoelliptic Laplacian and the trace formula | https://av.tib.eu/media/59260 | null | https://tib.flowcenter.de/mfc/medialink/3/decf2c031e82493fff406adfc58c5c3042483bf1f4549f06c53c578f700e9acf8dbc/201804190905-Bismut_lrv.mp4 | 2018 | Mathematics
Physics | Workshop/Interactive Format
Lecture | The hypoelliptic Laplacian gives a natural interpolation between the Laplacian and the geodesic flow. This interpolation preserves important spectral quantities. I will explain its construction in the context of compact Lie groups: in this case, the hypoelliptic Laplacian is the analytic counterpart to localization in equivariant cohomology on the coadjoint orbits of loop groups. The construction for noncompact reductive groups ultimately produces a geometric formula for the semisimple orbital integrals, which are the key ingredient in Selberg trace formula. In both cases, the construction of the hypoelliptic Laplacian involves the Dirac operator of Kostant. | English | 10.5446/59260 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Bismut, Jean-Michel | null |
Generalized products and Quantization | https://av.tib.eu/media/59261 | null | https://tib.flowcenter.de/mfc/medialink/3/de4f164d2552e16433806c8cc717f92466361e5004fddbfc0ea84bd2786bf3b6b9/201804191032-Melrose_lrv.mp4 | 2018 | Mathematics
Physics | Workshop/Interactive Format
Lecture | null | English | 10.5446/59261 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Melrose, Richard | null |
Torsion on hyperbolic manifolds of finite volume | https://av.tib.eu/media/59262 | null | https://tib.flowcenter.de/mfc/medialink/3/de093832b9d4f11837bf8c4c8be6abea374186dec49848d36d58a4131210901df0/201804191330-Rochon_lrv.mp4 | 2018 | Mathematics
Physics | Workshop/Interactive Format
Lecture | Given a finite dimensional irreducible complex representation of G=SOo(d,1), one can associate a canonical flat vector bundle E together with a canonical bundle metric h to any finite volume hyperbolic manifold X of dimension d. For d odd and provided X satisfies some mild hypotheses, we will explain how, by looking at a family of compact manifolds degenerating to X in a suitable sense, one can obtain a formula relating the analytic torsion of (X,E,h) with the Reidemeister torsion of an associated manifold with boundary. As an application, we will indicate how, in the arithmetic setting, this formula can be used to derive exponential growth of torsion in cohomology for various sequences of congruence subgroups. This is a joint work with Werner Mueller. | English | 10.5446/59262 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Rochon, Frédéric | null |
Diff-equivariant index theory | https://av.tib.eu/media/59263 | null | https://tib.flowcenter.de/mfc/medialink/3/de4129fdc2a11f2e33c42bad6f86cc719b5096de10a3d63726e7d3b9ca12a99085/201804191530-Rodsphon_lrv.mp4 | 2018 | Mathematics
Physics | Workshop/Interactive Format
Lecture | In the early eighties, Connes developed his Noncommutative Geometry program, mostly to extend index theory to situations where usual tools of differential topology are not available. A typical situation is foliations whose holonomy does not necessarily preserve any transverse measure, or equivalently the orbit space of the action of the full group of diffeomorphisms of a manifold. In the end of the nineties, Connes and Moscovici worked out an equivariant index problem in these contexts, and left a conjecture about the calculation of this index in terms of characteristic classes. The aim of this talk will be to survey the history of this problem, and explain partly our recent solution to Connes-Moscovici's conjecture, focusing on the part concerning `quantization'. No prior knowledge of Noncommutative Geometry will be assumed, and part of this is joint work with Denis Perrot. | English | 10.5446/59263 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Rodsphon, Rudy | null |
Berezin-Toeplitz quantization for eigenstates of the Bochner-Laplacian on symplectic manifolds | https://av.tib.eu/media/59264 | null | https://tib.flowcenter.de/mfc/medialink/3/de73e2447fe0b318316f708039fa67698fdf1831b9edd423d254ffc96272f041ce/201804191628-Marinescu_lrv.mp4 | 2018 | Mathematics
Physics | Workshop/Interactive Format
Lecture | We study the Berezin-Toeplitz quantization using as quantum space the space of eigenstates of the renormalized Bochner Laplacian on a symplectic manifold, corresponding to eigenvalues localized near the origin. We show that this quantization has the correct semiclassical behavior and construct the corresponding star-product. This is joint work with L. Ioos, W. Lu and X. Ma. | English | 10.5446/59264 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Marinescu, George | null |
Index theory and secondary spectral invariants to understand moduli spaces of Riemannian metrics (a survey) | https://av.tib.eu/media/59265 | null | https://tib.flowcenter.de/mfc/medialink/3/de61726ae29b057266bd0cdc8c8cb4c7682dfe3ac3484aadddc53d968a861e4ad8/201804200903-Schick_lrv.mp4 | 2018 | Mathematics
Physics | Workshop/Interactive Format
Lecture | null | English | 10.5446/59265 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Schick, Thomas | null |
Equivariant index theory in the noncompact context, and the relation to quantisation, reduction and PSC metrics (a survey) | https://av.tib.eu/media/59266 | null | https://tib.flowcenter.de/mfc/medialink/3/defdd0694b187e290f7534c6bcbfb0e4d969ff6dcb882f0b0d3b39679bebd09040/201804201034-Varghese_lrv.mp4 | 2018 | Mathematics
Physics | Workshop/Interactive Format
Lecture | null | English | 10.5446/59266 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Varghese, Mathai | null |
Building modelling datasets and Machine Learning in R | https://av.tib.eu/media/58305 | null | https://tib.flowcenter.de/mfc/medialink/3/de79157bc951925a5c5c5ef3c9f9cfac2568388911aa1a62436334aeefd8a73eb2c9/MOOD_Summer_School_9_Tom_Hengl_Leandro_Parente.mp4 | 2022 | Computer Science | Conference/Talk | In this block lead by Tom Hengl and Leandro Parente (OpenGeoHub) participants learn how to use state-of-the-art Machine Learning algorithms in R (mlr, mlr3) for the purpose of building models and producing spatial and spatiotemporal predictions. We used some of the disease datasets and covariate layers (MOOD study area) mentioned in the previous sections, then show step-by-step how to run spatial spatiotemporal overlays, optimize models, run model diagnostics, produce and visualize predictions (as maps or animations). The block is based on the R bookdown: https://opengeohub.github.io/spatial-prediction-eml/ | English | 10.5446/58305 (DOI) | CC Attribution 3.0 Germany:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Hengl, Tomislav
Parente, Leandro | null |
Time-series analysis of disease data | https://av.tib.eu/media/58303 | null | https://tib.flowcenter.de/mfc/medialink/3/deb0d5b27b92085ddc918e1e75dd760be94147146493b656d4e41133856491bea7/MOOD_Summer_School_5_Timoth__e_Dub_Tom_Hengl.mp4 | 2022 | Computer Science | Conference/Talk | In this session, Timothee Dub (Finnish Institute for Health and Welfare, Finland) & Tom Hengl (OpenGeoHub, Netherlands) discussed the basics of Time Series Analysis, including with panel data. We looked into how to take into account seasonality, how to identify a trend and how to investigate the relationship between two-time series, with a focus on practical tips and R packages. By the end of this lecture, participants are able to analyze surveillance data, identify seasonality and investigate potential trends. | English | 10.5446/58303 (DOI) | CC Attribution 3.0 Germany:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Dub, Timothee
Hengl, Tomislav | null |
Sparse High-dimensional Approximation from Highly Noisy Data | https://av.tib.eu/media/59145 | null | https://tib.flowcenter.de/mfc/medialink/3/de8bbf1f4d65be8bd8312d4c349abe59b89a1d7777476768d5db12b0e74e4d086f/201804231118-Brugiapaglia_lrv.mp4 | 2018 | Mathematics | Workshop/Interactive Format
Lecture | null | English | 10.5446/59145 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Brugiapaglia, Simone | Adcock, Ben
Bao, Anyi
Webster, Clayton G. |
Data and Models | https://av.tib.eu/media/59146 | null | https://tib.flowcenter.de/mfc/medialink/3/de7824af0c1c86e62efc44986753a43dba5acc92568ac30a29db197350fea9321a/201804230905-Dahmen_lrv.mp4 | 2018 | Mathematics | Workshop/Interactive Format
Lecture | null | English | 10.5446/59146 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Dahmen, Wolfgang | N. N. (Moderation)
Bachmayer, M.
Binev, P.
Cohen, A.
DeVore, R.
Petrova, G.
Wojtaszczyk, P. |
Deep Neural Nets meets ODE's | https://av.tib.eu/media/59147 | null | https://tib.flowcenter.de/mfc/medialink/3/de38d1134be813afa21082eb71deaaed950e8dad2b95c334e9200c63c758e3edb3/201804231331-Haber_lrv.mp4 | 2018 | Mathematics | Workshop/Interactive Format
Lecture | null | English | 10.5446/59147 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Haber, Eldad | N. N. (Moderation)
Ruthotto, Lars
Holtham, Elliot
Meng, Lili
Chang, Bo |
Nonconvex Approaches in Data Science | https://av.tib.eu/media/59148 | null | https://tib.flowcenter.de/mfc/medialink/3/def3865c30112d4b0b95eee7021c5b4ef2f1a5500585df3a8d7ec4a89193a72d47eb/201804231501-Lou_lrv.mp4 | 2018 | Mathematics | Workshop/Interactive Format
Lecture | null | English | 10.5446/59148 (DOI) | CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | Lou, Yifei | N. N. (Moderation) |
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