bluuebunny/crossref_metadata_2025_split huggingface dataset:
Inverse Pressure Estimates and the Independence of Stable Dimension for Non-Invertible Maps
Authors: Mihailescu Eugen , Urbański Mariusz 
Published: November 2009

AbstractWe study the case of an Axiom A holomorphic non-degenerate (hence non-invertible) mapf: ℙ2ℂ → ℙ2ℂ, where ℙ2ℂ stands for the complex projective space of dimension 2. Letδs(x)denote a basic set for f of unstable index 1, and x an arbitrary point of Λ; we denote byδs(x)the Hausdorff dimension of∩ Λ, whereris some fixed positive number andis the local stable manifold atxof sizer;δs(x)is calledthe stable dimension at x. Mihailescu and Urba ńnski introduced a notion of inverse topological pressure, denoted by P−, which takes into consideration preimages of points. Manning and McCluskey studied the case of hyperbolic diffeomorphisms on real surfaces and give formulas for Hausdorff dimension. Our non-invertible situation is different here since the local unstable manifolds are not uniquely determined by their base point, instead they depend in general on whole prehistories of the base points. Hence our methods are different and are based on using a sequence of inverse pressures for the iterates off, in order to give upper and lower estimates of the stable dimension. We obtain an estimate of the oscillation of the stable dimension on Λ. When each pointxfrom Λ has the same numberd′of preimages in Λ, then we show thatδs(x)is independent of x; in factδs(x)is shown to be equal in this case with the unique zero of the mapt → P(tϕs−log d′). We also prove the Lipschitz continuity of the stable vector spaces over Λ; this proof is again different than the one for diffeomorphisms (however, the unstable distribution is not always Lipschitz for conformal non-invertible maps). In the end we include the corresponding results for a real conformal setting.
Closed and Exact Functions in the Context of Ginzburg–Landau Models
Authors: Savu Anamaria 
Published: November 2009

AbstractFor a general vector field we exhibit two Hilbert spaces, namely the space of so called closed functions and the space of exact functions and we calculate the codimension of the space of exact functions inside the larger space of closed functions. In particular we provide a new approach for the known cases: the Glauber field and the second-order Ginzburg–Landau field and for the case of the fourth-order Ginzburg–Landau field.
-Stable ASH Algebras
Authors: Toms Andrew S. , Winter Wilhelm 
Published: November 2009

AbstractThe Jiang–Su algebra has come to prominence in the classification program for nuclear C*-algebras of late, due primarily to the fact that Elliott’s classification conjecture in its strongest form predicts that all simple, separable, and nuclear C*-algebras with unperforated K-theory will absorb tensorially, i.e., will be -stable. There exist counterexamples which suggest that the conjecture will only hold for simple, nuclear, separable and -stable C*-algebras. We prove that virtually all classes of nuclear C*-algebras for which the Elliott conjecture has been confirmed so far consist of -stable C*-algebras. This follows in large part from the following result, also proved herein: separable and approximately divisible C*-algebras are -stable.
On the Hyperinvariant Subspace Problem. IV
Authors: Bercovici H. , Foias C. , Pearcy C. 
Published: November 2009

AbstractThis paper is a continuation of three recent articles concerning the structure of hyperinvariant subspace lattices of operators on a (separable, infinite dimensional) Hilbert space . We show herein, in particular, that there exists a “universal” fixed block-diagonal operator B on such that if ε > 0 is given and T is an arbitrary nonalgebraic operator on , then there exists a compact operator K of norm less than ε such that (i) Hlat(T) is isomorphic as a complete lattice to Hlat(B + K) and (ii) B + K is a quasidiagonal, C00, (BCP)-operator with spectrum and left essential spectrum the unit disc. In the last four sections of the paper, we investigate the possible structures of the hyperlattice of an arbitrary algebraic operator. Contrary to existing conjectures, Hlat(T) need not be generated by the ranges and kernels of the powers of T in the nilpotent case. In fact, this lattice can be infinite.
Types, paquets et changement de base : l’exemple de U(2, 1)(F0). I. Types simples maximaux et paquets singletons
Authors: Blasco Laure 
Published: November 2009

RésuméSoit F0 un corps local non archimédien de caractéristique nulle et de caractéristique résiduelle impaire. J. Rogawski a montré l’existence du changement de base entre le groupe unitaire en trois variables U(2, 1)(F0), défini relativement à une extension quadratique F de F0, et le groupe linéaire GL(3, F). Par ailleurs, nous avons décrit les représentations supercuspidales irréductibles de U(2, 1)(F0) comme induites à partir d’un sous-groupe compact ouvert de U(2, 1)(F0), description analogue à celle des représentations admissibles irréductibles de GL(3, F) obtenue par C. Bushnell et P. Kutzko. A partir de ces descriptions, nous construisons explicitement le changement de base des représentations très cuspidales de U(2, 1)(F0).
A Characterization of the Quantum Cohomology Ring of G/B and Applications
Authors: Mare Augustin-Liviu 
Published: November 2009

AbstractWe observe that the small quantum product of the generalized flag manifold G/B is a product operation ★ on H*(G/B) ⊗ ℝ[q1, . . . , ql] uniquely determined by the facts that it is a deformation of the cup product on H*(G/B); it is commutative, associative, and graded with respect to deg(qi ) = 4; it satisfies a certain relation (of degree two); and the corresponding Dubrovin connection is flat. Previously, we proved that these properties alone imply the presentation of the ring (H*(G/B)⊗ℝ[q1, . . . , ql], ★) in terms of generators and relations. In this paper we use the above observations to give conceptually new proofs of other fundamental results of the quantum Schubert calculus for G/B: the quantumChevalley formula of D. Peterson (see also Fulton andWoodward) and the “quantization by standard monomials” formula of Fomin, Gelfand, and Postnikov for G = SL(n, ℂ). The main idea of the proofs is the same as in Amarzaya–Guest: from the quantum -module of G/B one can decode all information about the quantum cohomology of this space.
The Second Cohomology of Current Algebras of General Lie Algebras
Authors: Neeb Karl-Hermann , Wagemann Friedrich 
Published: November 2009

AbstractLet A be a unital commutative associative algebra over a field of characteristic zero, a Lie algebra, and a vector space, considered as a trivial module of the Lie algebra . In this paper, we give a description of the cohomology space in terms of easily accessible data associated with A and . We also discuss the topological situation, where A and are locally convex algebras.
About the Defectivity of Certain Segre–Veronese Varieties
Authors: Abrescia Silvia 
Published: November 2009

AbstractWe study the regularity of the higher secant varieties of ℙ1 × ℙn, embedded with divisors of type (d, 2) and (d, 3). We produce, for the highest defective cases, a “determinantal” equation of the secant variety. As a corollary, we prove that the Veronese triple embedding of ℙn is not Grassmann defective.
An AF Algebra Associated with the Farey Tessellation
Authors: Boca Florin P. 
Published: November 2009

AbstractWe associate with the Farey tessellation of the upper half-plane an AF algebraencoding the “cutting sequences” that define vertical geodesics. The Effros–Shen AF algebras arise as quotients of. Using the path algebra model for AF algebras we construct, for eachτ∈ ( 0, ¼], projections (En) insuch thatEnEn±1En≤τ En.
Lifting n-Dimensional Galois Representations
Authors: Hamblen Spencer 
Published: November 2009

AbstractWe investigate the problem of deforming n-dimensional mod p Galois representations to characteristic zero. The existence of 2-dimensional deformations has been proven under certain conditions by allowing ramification at additional primes in order to annihilate a dual Selmer group. We use the same general methods to prove the existence of n-dimensional deformations.We then examine under which conditions we may place restrictions on the shape of our deformations at p, with the goal of showing that under the correct conditions, the deformations may have locally geometric shape. We also use the existence of these deformations to prove the existence as Galois groups over ℚ of certain infinite subgroups of p-adic general linear groups.
Conjugate Reciprocal Polynomials with All Roots on the Unit Circle
Authors: Petersen Kathleen L. , Sinclair Christopher D. 
Published: November 2009

AbstractWe study the geometry, topology and Lebesgue measure of the set of monic conjugate reciprocal polynomials of fixed degree with all roots on the unit circle. The set of such polynomials of degree N is naturally associated to a subset of ℝN−1. We calculate the volume of this set, prove the set is homeomorphic to the N − 1 ball and that its isometry group is isomorphic to the dihedral group of order 2N.
Categorification of the Colored Jones Polynomial and Rasmussen Invariant of Links
Authors: Beliakova Anna , Wehrli Stephan 
Published: November 2009

AbstractWe define a family of formal Khovanov brackets of a colored link depending on two parameters. The isomorphismclasses of these brackets are invariants of framed colored links. The Bar-Natan functors applied to these brackets produce Khovanov and Lee homology theories categorifying the colored Jones polynomial. Further, we study conditions under which framed colored link cobordisms induce chain transformations between our formal brackets. We conjecture that for special choice of parameters, Khovanov and Lee homology theories of colored links are functorial (up to sign). Finally, we extend the Rasmussen invariant to links and give examples where this invariant is a stronger obstruction to sliceness than the multivariable Levine–Tristram signature.
Nonadjacent Radix-τ Expansions of Integers in Euclidean Imaginary Quadratic Number Fields
Authors: Blake Ian F. , Kumar Murty V. , Xu Guangwu 
Published: November 2009

AbstractIn his seminal papers, Koblitz proposed curves for cryptographic use. For fast operations on these curves, these papers also initiated a study of the radix-τ expansion of integers in the number fields and . The (window) nonadjacent form of τ -expansion of integers in was first investigated by Solinas. For integers in , the nonadjacent form and the window nonadjacent form of the τ -expansion were studied. These are used for efficient point multiplications on Koblitz curves. In this paper, we complete the picture by producing the (window) nonadjacent radix-τ expansions for integers in all Euclidean imaginary quadratic number fields.
Moving Frames for Lie Pseudo–Groups
Authors: Olver Peter J. , Pohjanpelto Juha 
Published: November 2009

AbstractWe propose a new, constructive theory of moving frames for Lie pseudo-group actions on submanifolds. Themoving frame provides an effectivemeans for determining complete systems of differential invariants and invariant differential forms, classifying their syzygies and recurrence relations, and solving equivalence and symmetry problems arising in a broad range of applications.
Hauteur asymptotique des points de Heegner
Authors: Ricotta Guillaume , Vidick Thomas 
Published: November 2009

AbstractGeometric intuition suggests that the Néron–Tate height of Heegner points on a rational elliptic curveEshould be asymptotically governed by the degree of its modular parametrisation. In this paper, we show that this geometric intuition asymptotically holds on average over a subset of discriminants. We also study the asymptotic behaviour of traces of Heegner points on average over a subset of discriminants and find a difference according to the rank of the elliptic curve. By the Gross–Zagier formulae, such heights are related to the special value at the critical point for either the derivative of the Rankin–Selberg convolution ofEwith a certain weight one theta series attached to the principal ideal class of an imaginary quadratic field or the twistedL-function ofEby a quadratic Dirichlet character. Asymptotic formulae for the first moments associated with theseL-series andL-functions are proved, and experimental results are discussed. The appendix contains some conjectural applications of our results to the problem of the discretisation of odd quadratic twists of elliptic curves.
Microtexture and Grain Boundaries in Freestanding CVD Diamond Films: Growth and Twinning Mechanisms
Authors: Liu Tao , Raabe Dierk , Mao Weimin , Zaefferer Stefan 
Published: November 2009

AbstractThree groups of free‐standing chemical vapor deposition (CVD) diamond films formed with variations in substrate temperature, methane concentration, and film thickness are analyzed using high‐resolution electron back‐scattering diffraction. Primarily {001}, {110}, and {111} fiber textures are observed. In addition, corresponding primary and higher order twinning components are found. As interfaces, high angle, low angle, primary twin, and secondary twin boundaries are observed. A growth and a twinning model are proposed based on the sp3 hybridization of the bond in the CH4 molecule that is used as the deposition medium.
Vertically Aligned Nanocomposite Thin Films as a Cathode/Electrolyte Interface Layer for Thin‐Film Solid Oxide Fuel Cells
Authors: Yoon Jongsik , Cho Sungmee , Kim Jung‐Hyun , Lee JoonHwan , Bi Zhenxing , Serquis Adriana , Zhang Xinghang , Manthiram Arumugam , Wang Haiyan 
Published: November 2009

AbstractA thin layer of a vertically aligned nanocomposite (VAN) structure is deposited between the electrolyte, Ce0.9Gd0.1O1.95 (CGO), and the thin‐film cathode layer, La0.5Sr0.5CoO3 (LSCO), of a thin‐film solid‐oxide fuel cell (TFSOFC). The self‐assembled VAN nanostructure contains highly ordered alternating vertical columns of CGO and LSCO formed through a one‐step thin‐film deposition process that uses pulsed laser deposition. The VAN structure significantly improves the overall performance of the TFSOFC by increasing the interfacial area between the electrolyte and cathode. Low cathode polarization resistances of 9 × 10−4 and 2.39 Ω were measured for the cells with the VAN interlayer at 600 and 400 °C, respectively. Furthermore, anode‐supported single cells with LSCO/CGO VAN interlayer demonstrate maximum power densities of 329, 546, 718, and 812 mW cm−2 at 550, 600, 650, and 700 °C, respectively, with an open‐circuit voltage (OCV) of 1.13 V at 550 °C. The cells with the interlayer triple the overall power output at 650 °C compared to that achieved with the cells without an interlayer. The binary VAN interlayer could also act as a transition layer that improves adhesion and relieves both thermal stress and lattice strain between the cathode and the electrolyte.
Clinical impact of blood storage lesions
Authors: Zubair Abba C. 
Published: November 2009

AbstractRecent reports suggest that transfusion of old red blood cell (RBC) units (>2 weeks) was associated with increased risks of postoperative complications and higher mortality rate caught public attention (Yap et al., Ann Thorac Surg 2008; 86:554–559 and Koch et al., 2008; 358:1229–1239). This rekindled the decades old discussion regarding the impact of RBC aging and storage lesions in patient care. The objectives of this review are to provide readers with an overview of the process of banking RBC that may have an impact on its quality, the reported clinical impact of storage lesions, the consequences of transfusing new RBC units only to the nation's blood supply and potential solutions that may improve the feasibility of blood banks to issue new blood units only. Am. J. Hematol., 2010. © 2009 Wiley‐Liss, Inc.
Psychiatric syndromes in individuals with chromosome 18 abnormalities
Authors: Zavala Juan , Ramirez Mercedes , Medina Rolando , Heard Patricia , Carter Erika , Crandall AnaLisa , Hale Daniel , Cody Jannine , Escamilla Michael 
Published: November 2009

AbstractChromosome 18 abnormalities are associated with a range of physical abnormalities such as short stature and hearing impairments. Psychiatric manifestations have also been observed. This study focuses on the presentations of psychiatric syndromes as they relate to specific chromosomal abnormalities of chromosome 18. Twenty‐five subjects (13 with an 18q deletion, 9 with 18p tetrasomy, and 3 with an 18p deletion), were interviewed by psychiatrists (blind to specific chromosomal abnormality) using the DIGS (subjects 18 and older) or KSADS‐PL (subjects under 18). A consensus best estimation diagnostic process was employed to determine psychiatric syndromes. Oligonucleotide Array Comparative Genomic Hybridization (Agilent Technologies) was utilized to define specific regions of chromosome 18 that were deleted or duplicated. These data were further analyzed to determine critical regions of the chromosome as they relate to phenotypic manifestations in these subjects. 58.3% of the chromosome 18q‐ deletion subjects had depressive symptoms, 58.3% had anxiety symptoms, 25% had manic symptoms, and 25% had psychotic symptoms. 66.6% of the chromosome 18p‐ deletion subjects had anxiety symptoms, and none had depressive, manic, or psychotic symptoms. Fifty percent of the chromosome 18p tetrasomy subjects had anxiety symptoms, 12.5% had psychotic symptoms, and 12.5% had a mood disorder. All three chromosomal disorders were associated with high anxiety rates. Psychotic, manic and depressive disorders were seen mostly in 18q‐ subjects and this may be helpful in narrowing regions for candidate genes for these psychiatric conditions. © 2009 Wiley‐Liss, Inc.
Enthesopathy formation in the humerus: Data from known age‐at‐death and known occupation skeletal collections
Authors: Cardoso F. Alves , Henderson C.Y. 
Published: November 2009

AbstractEnthesopathies, in the guise of musculoskeletal skeletal stress markers (MSM), have been widely used to reconstruct activity levels in human skeletal populations. In general, studies have focused on their presence in the upper limb, which is used in the majority of daily activities. The aim of this study was to use some of the attachment sites on the humerus to explore the relationship between enthesopathy formation, activity, and the ageing process. The skeletal sample used in this study comprised male adult skeletons with known age‐at‐death and known occupations from the late‐19th and early‐20th century cemeteries in Portugal. The enthesopathies were recorded as either present or absent. Statistical analysis using Fishers exact tests and logistic regression was undertaken to determine whether associations could be found between specific activities or socioeconomic status (manual or nonmanual workers), and age and enthesopathy presence. Left and right sides were analyzed separately. Fisher's exact tests were used to determine the relationship between activity and enthesopathy, and they demonstrated no association between activity and enthesopathies (P > 0.01). The results of the logistic regression established that age was the single most significant factor in enthesopathy formation (P > 0.05). This study found that, in these samples, age‐at‐death, and therefore age‐related degeneration rather than degeneration caused by activities, was the primary cause of enthesopathy formation. Considering the difficulties of reliably ageing adult human skeletal remains, this is a major issue for studies of activity using enthesopathies. Am J Phys Anthropol, 2010. © 2009 Wiley‐Liss, Inc.
Synthesis and Antiproliferative Activitiy of Novel Diaryl Ureas Possessing a 4H‐Pyrido[1,2‐a]pyrimidin‐4‐one Group
Authors: Yao Peng , Zhai Xin , Liu Dong , Qi Bao Hui , Tan Hai Liang , Jin Yong Cai , Gong Ping 
Published: November 2009

AbstractWe herein disclose a series of novel diaryl urea derivatives possessing a 4H‐pyrido[1,2‐a]pyrimidin‐4‐one group as novel potent anticancer compounds. The structures were confirmed by IR, 1H‐NMR, and MS. All the compounds were screened for their antiprofilerative activity agaist the human breast cancer cell line (MDA‐MB‐231). The pharmacological results indicated that most of the compounds showed moderate activity. The best of this series is compound 4c (IC50 = 0.7 μmol/L), with a potency 3.6‐fold higher than Sorafenib (IC50 = 2.5 μmol/L), which was approved in 2005.
ChemInform Abstract: Structural and Vibrational Study of [Mo7O24]6‐ and [W7O24]6‐.
Authors: Courcot Blandine , Bridgeman Adam J. 
Published: November 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Energetic and Electronic Properties of X‐ (Si, Ge, Sn, Pb) Doped TiO2 from First‐Principles.
Authors: Long Run , Dai Ying , Meng Guo , Huang Baibiao 
Published: November 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Non‐thermal Reduction of Indium Oxide and Indium Tin Oxide by Mechanochemical Method.
Authors: Kano Junya , Kobayashi Eiko , Tongamp William , Miyagi Shoko , Saito Fumio 
Published: November 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Synthesis of Multinary Rare‐Earth Sulfides PrGdS3, NdGdS3, and SmEuGdS4, and Investigation of Their Thermoelectric Properties.
Authors: Ohta Michihiro , Kuzuya Toshihiro , Sasaki Hideto , Kawasaki Taku , Hirai Shinji 
Published: November 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Synthesis and Magnetic Properties of Ba2Mn2Si2O9: The First Example of S = 2 Spin Dimer with Spin‐Singlet Ground State.
Authors: He Zhangzhen , Wangbo Myung‐Hwan , Ueda Yutaka , Narumi Yasuo , Kindo Koichi , Taniyama Tomoyasu , Itoh Mitsuru , Cheng Wendan 
Published: November 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: A Novel Chemical Synthesis of Interlocked Cubes of Hausmannite Mn3O4 Thin Films for Supercapacitor Application.
Authors: Dubal D. P. , Dhawale D. S. , Salunkhe R. R. , Pawar S. M. , Fulari V. J. , Lokhande C. D. 
Published: November 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Hydrothermal Preparation and Characterization of Octadecahedron Fe3O4 Film.
Authors: Chen Jie , Huang Kelong , Liu Suqin 
Published: November 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.