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A bijection between planar constellations and some colored
A bijection between planar constellations and some colored Lagrangian trees
Cedric Chauve
Constellations are colored planar maps that generalize different families of maps (planar maps, bipartite planar maps, bi-Eulerian planar maps, planar cacti, ...) and are... | {"url":"http://www.dmtcs.org/dmtcs-ojs/index.php/dmtcs/article/viewArticle/174","timestamp":"2014-04-17T18:33:53Z","content_type":null,"content_length":"12805","record_id":"<urn:uuid:80cd68a7-70bc-4c4e-8f0d-59ef8e6fcf4e>","cc-path":"CC-MAIN-2014-15/segments/1398223206672.15/warc/CC-MAIN-20140423032006-00577-ip-10-147-4... |
South Colby Algebra Tutor
Find a South Colby Algebra Tutor
...I took the test twice and enrolled in the Kaplan prep class for the MCAT as well. I have been using MS Outlook since 1991. As a project manager, I used this program to send email communications
to my sponsors and other stakeholders on the project.
46 S... | {"url":"http://www.purplemath.com/South_Colby_Algebra_tutors.php","timestamp":"2014-04-20T21:43:32Z","content_type":null,"content_length":"23868","record_id":"<urn:uuid:cb3ce1b4-f6e1-489c-ab1b-90d689e90431>","cc-path":"CC-MAIN-2014-15/segments/1398223203841.5/warc/CC-MAIN-20140423032003-00072-ip-10-147-4-33.ec2.interna... |
Bus Service for Qubits
Spin-orbit qubits are right at home in electrical circuits
Qubit-based computing exploiting spooky quantum effects like entanglement and superposition will speed up factoring and searching calculations far above what can be done with mere zero-or-one bits.
To domesticate quantum weirdness, howeve... | {"url":"http://jqi.umd.edu/news/bus-service-qubits","timestamp":"2014-04-21T15:49:28Z","content_type":null,"content_length":"68629","record_id":"<urn:uuid:b2a4cdbb-a68e-43ea-a50a-1fc079b0eee3>","cc-path":"CC-MAIN-2014-15/segments/1398223207046.13/warc/CC-MAIN-20140423032007-00491-ip-10-147-4-33.ec2.internal.warc.gz"} |
Show that Z[i] is a PID.
March 29th 2011, 07:04 PM #1
Junior Member
Apr 2010
Show that Z[i] is a PID.
Show that $\mathbb{Z}[i]$ is a principal ideal domain.
I have already shown that $\mathbb{Z}[i]$ is an integral domain. How do I show that all ideals are principal ( $I=(r), r\in \mathbb{Z}[i]$)?
If... | {"url":"http://mathhelpforum.com/advanced-algebra/176265-show-z-i-pid.html","timestamp":"2014-04-21T09:09:25Z","content_type":null,"content_length":"40762","record_id":"<urn:uuid:3a9c22c7-4c69-47ce-9393-daaf9c8e92a9>","cc-path":"CC-MAIN-2014-15/segments/1397609539665.16/warc/CC-MAIN-20140416005219-00662-ip-10-147-4-33.... |
Programming with Algebraic Effects and Handlers
With Matija Pretnar.
Abstract: Eff is a programming language based on the algebraic approach to computational effects, in which effects are viewed as algebraic operations and effect handlers as homomorphisms from free
algebras. Eff supports first-class effects and handler... | {"url":"http://math.andrej.com/2012/03/08/programming-with-algebraic-effects-and-handlers/","timestamp":"2014-04-17T04:22:29Z","content_type":null,"content_length":"46948","record_id":"<urn:uuid:c5bb9a49-0d8f-403d-b396-ecba332e9d83>","cc-path":"CC-MAIN-2014-15/segments/1397609526252.40/warc/CC-MAIN-20140416005206-00523... |
Asymptote Zoned
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Asymptote Zoned
hay dim. you know flu ?
approaching infinit and all...
do dea; perus, l
2 3 ll 5
i love you like: o... | {"url":"http://www.funnyjunk.com/funny_pictures/3214966/Asymptote+Zoned/","timestamp":"2014-04-21T07:31:44Z","content_type":null,"content_length":"129912","record_id":"<urn:uuid:003faf64-15e8-4242-aa81-fe82946af41c>","cc-path":"CC-MAIN-2014-15/segments/1397609539665.16/warc/CC-MAIN-20140416005219-00239-ip-10-147-4-33.e... |
On the de Rham cohomology of 1-forms in cotangent bundle.
up vote 1 down vote favorite
We know that a cotangent bundle $T^\star M$ has a canonical symplectic form and $M$ is a natural Lagrangian submanifold of it. A well known result is that any submanifold $X=\{(p,f(p)): p\in M\}$,
where $f$ is a closed one form is La... | {"url":"http://mathoverflow.net/questions/118448/on-the-de-rham-cohomology-of-1-forms-in-cotangent-bundle?sort=newest","timestamp":"2014-04-17T10:16:16Z","content_type":null,"content_length":"67031","record_id":"<urn:uuid:173dc024-ae0e-43d0-b0a8-8b27269c593f>","cc-path":"CC-MAIN-2014-15/segments/1397609527423.39/warc/C... |
Almost periodic mappings on topological spaces
Author: Pavel Dorin Status
Degree: doctor of physics and mathematics
Speciality: 01.01.04 - Geometry and topology The thesis was presented on the 19 November, ... | {"url":"http://www.cnaa.md/en/thesis/14422/","timestamp":"2014-04-20T09:08:17Z","content_type":null,"content_length":"13019","record_id":"<urn:uuid:a6341aba-687d-4061-9299-e7526b3c0e56>","cc-path":"CC-MAIN-2014-15/segments/1397609538110.1/warc/CC-MAIN-20140416005218-00536-ip-10-147-4-33.ec2.internal.warc.gz"} |
Geometric Photo Manipulation - The Algorithm Explained
The MATLAB programs perspective.m and orthographic.m are designed to produce the cube pictures of Figure 3, but the programs can be altered to generate an unlimited number of constructions, for
example, the one in Figure 1 and those to appear in the next section. H... | {"url":"http://www.maa.org/publications/periodicals/loci/joma/geometric-photo-manipulation-the-algorithm-explained","timestamp":"2014-04-25T00:29:22Z","content_type":null,"content_length":"99722","record_id":"<urn:uuid:06f2d31c-3e91-46a8-a6b7-16817d7d78b1>","cc-path":"CC-MAIN-2014-15/segments/1398223207046.13/warc/CC-M... |
Don't understand this summation problem
September 8th 2012, 10:53 AM #1
Don't understand this summation problem
$\sum\limits_{n = 1}^{2k} {{{\left( { - 1} \right)}^{n + 1}}n} = {\left( { - 1} \right)^{n + 1}}n$
$\sum\limits_{n = 1}^{2k} {{{\left( { - 1} \right)}^{n + 1}}} = {\left( { - 1} \right)^{n }}$
^Th... | {"url":"http://mathhelpforum.com/pre-calculus/203108-don-t-understand-summation-problem.html","timestamp":"2014-04-17T15:18:59Z","content_type":null,"content_length":"47242","record_id":"<urn:uuid:625bff5e-b3ef-4e54-847e-c6ecece160fa>","cc-path":"CC-MAIN-2014-15/segments/1397609538022.19/warc/CC-MAIN-20140416005218-004... |
Lynwood Statistics Tutor
Find a Lynwood Statistics Tutor
Hello! Thanks for taking the time to view my profile. I received my B.S in Psychology and am currently an MBA & M.S of Finance student at the University of Southern California (USC). I have more
than 7 years of experience and am confident that I can help you ... | {"url":"http://www.purplemath.com/lynwood_ca_statistics_tutors.php","timestamp":"2014-04-17T13:08:17Z","content_type":null,"content_length":"23933","record_id":"<urn:uuid:5dfd972d-2241-49cc-b869-d4e5769650a2>","cc-path":"CC-MAIN-2014-15/segments/1397609530131.27/warc/CC-MAIN-20140416005210-00283-ip-10-147-4-33.ec2.inte... |
Comparing Two RV Arrays and Outputting Character Strings
So I'm very new to mathcad prime and I'm trying to compare resultant numbers from computing with range variables. I was hoping someone could show me how to figure out what I'm trying to accomplish.
Example (simplified):
I've defined two range variables
then apply... | {"url":"http://communities.ptc.com/thread/41830","timestamp":"2014-04-17T04:09:06Z","content_type":null,"content_length":"158517","record_id":"<urn:uuid:95a4b69b-7372-4e2f-bef7-5f64d2e183aa>","cc-path":"CC-MAIN-2014-15/segments/1398223211700.16/warc/CC-MAIN-20140423032011-00312-ip-10-147-4-33.ec2.internal.warc.gz"} |
How to tell how good a TV show is
(This is my last blog of the year. Lance will interrupt his blog sabbatical to do an END OF THE YEAR blog later.)
The TV show MONK recently finished its 8th and final season. My wife and I are big fans and have seasons 1-7 on DVD (and we will get 8). But this post is not about Monk. It... | {"url":"http://blog.computationalcomplexity.org/2009/12/how-to-tell-how-good-tv-show-is.html","timestamp":"2014-04-18T23:16:40Z","content_type":null,"content_length":"184352","record_id":"<urn:uuid:e2bf22f9-d477-4b7e-94e7-0765d999180f>","cc-path":"CC-MAIN-2014-15/segments/1398223206118.10/warc/CC-MAIN-20140423032006-00... |
GLMs and GLMMs in the analysis of randomized experiments
Seminar Room 1, Newton Institute
The Normal linear model analysis is usually used as an approximation to the exact randomization analysis and extended to structures, such as nonorthogonal split-plot designs, as a natural
approximation. If the responses are counts... | {"url":"http://www.newton.ac.uk/programmes/DAE/seminars/2011080914001.html","timestamp":"2014-04-18T05:41:48Z","content_type":null,"content_length":"6230","record_id":"<urn:uuid:261ea1c5-5732-486f-9525-cbb1c99f801b>","cc-path":"CC-MAIN-2014-15/segments/1397609532573.41/warc/CC-MAIN-20140416005212-00240-ip-10-147-4-33.e... |
Golden ratio (idea)
I believe the geometric proportion served the Creator as an idea when He introduced the continuous generation of similar objects from similar objects. -- Johannes Kepler
The Golden Ratio can be obtained easily by the proper division of a line segment, instead of constructing the geometrically pl... | {"url":"http://everything2.com/user/Professor+Pi/writeups/Golden+ratio","timestamp":"2014-04-20T09:53:15Z","content_type":null,"content_length":"20563","record_id":"<urn:uuid:cd34b0e3-24ed-4c42-9ffd-a6255de180bb>","cc-path":"CC-MAIN-2014-15/segments/1397609538110.1/warc/CC-MAIN-20140416005218-00307-ip-10-147-4-33.ec2.i... |
How do i solve this trig problem - Polar equations.
January 12th 2011, 05:40 PM
How do i solve this trig problem - Polar equations.
Here is the problem that I cannot figure out how to do. Please explain.
r = (5csc(θ))/(6csc(θ) + 3)
a) (36x^2) + (27y^2) + (30x) -25 = 0
b) (27x^2) + (36y^2) +(30x) -25 = 0... | {"url":"http://mathhelpforum.com/pre-calculus/168183-how-do-i-solve-trig-problem-polar-equations-print.html","timestamp":"2014-04-20T19:50:26Z","content_type":null,"content_length":"8452","record_id":"<urn:uuid:09b1d61d-9315-4199-88c2-c6948dbd6ef0>","cc-path":"CC-MAIN-2014-15/segments/1397609539066.13/warc/CC-MAIN-2014... |
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Need help with Geometry, 10th grade, I don't get it, Help need... | {"url":"http://openstudy.com/updates/50ffd9fee4b00c5a3be667da","timestamp":"2014-04-18T19:10:20Z","content_type":null,"content_length":"45836","record_id":"<urn:uuid:7e70dc77-17b9-44b9-af24-7e0a4fb0ad35>","cc-path":"CC-MAIN-2014-15/segments/1397609535095.7/warc/CC-MAIN-20140416005215-00084-ip-10-147-4-33.ec2.internal.w... |
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Topic: Enclose 5 points with a circle
Replies: 1 Last Post: Feb 13, 2014 9:45 AM
Messages: [ Previous |... | {"url":"http://mathforum.org/kb/thread.jspa?threadID=2618906","timestamp":"2014-04-16T19:17:09Z","content_type":null,"content_length":"17206","record_id":"<urn:uuid:8d8ab683-ef87-47c4-bb18-5062017f09f0>","cc-path":"CC-MAIN-2014-15/segments/1398223206770.7/warc/CC-MAIN-20140423032006-00164-ip-10-147-4-33.ec2.internal.wa... |
Modeling and Calibration for Crack Detection in Circular Shafts Supported on Bearings Using Lateral and Torsional Vibration Measurements
Advances in Mechanical Engineering
Volume 2012 (2012), Article ID 519471, 18 pages
Research Article
Modeling and Calibration for Crack Detection in Circular Shafts Supported on Bearin... | {"url":"http://www.hindawi.com/journals/ame/2012/519471/","timestamp":"2014-04-16T19:21:08Z","content_type":null,"content_length":"120623","record_id":"<urn:uuid:a03e6458-0795-4b64-908d-b6e25c55a9b6>","cc-path":"CC-MAIN-2014-15/segments/1398223204388.12/warc/CC-MAIN-20140423032004-00447-ip-10-147-4-33.ec2.internal.warc... |
Written Exam Workshop Fall '09
Written Exam Workshop
Fall 2009
Will Perkins
office 1111
office hours: Mondays, 7 - 8 pm (note the change)
practical information
Week 1 (9/17) - Calculus
Topics: Limits and Series; tests of convergence
Week 2 (9/24) - Calculus
(there will be a subsitute instructor this week)
Topics: Multi... | {"url":"http://www.cims.nyu.edu/~perkins/writtenF09/index.html","timestamp":"2014-04-20T16:09:59Z","content_type":null,"content_length":"12882","record_id":"<urn:uuid:fd9710ce-4bc9-478d-b4ca-4c05bbb35ed8>","cc-path":"CC-MAIN-2014-15/segments/1397609538824.34/warc/CC-MAIN-20140416005218-00656-ip-10-147-4-33.ec2.internal... |
hello everyone
August 9th 2007, 03:32 AM #1
Aug 2007
hello everyone
hi all, am just new to this forum.. and am hope that this forum will help me out in my maths problems.actually a math question brought me here...and i really need to get a solution for that
question.. wish everyone will help me out..
he... | {"url":"http://mathhelpforum.com/calculus/17633-hello-everyone.html","timestamp":"2014-04-16T17:05:30Z","content_type":null,"content_length":"38448","record_id":"<urn:uuid:a2ca6b6b-e5ce-4892-9833-0b9a7ec65047>","cc-path":"CC-MAIN-2014-15/segments/1397609524259.30/warc/CC-MAIN-20140416005204-00422-ip-10-147-4-33.ec2.int... |
Rolling Meadows Algebra Tutor
...I have also developed an efficient and effective approach to significantly expanding vocabulary knowledge that I used for my own test preparation and that I recommend to everyone I tutor. MY
RECENT TEST SCORES: GMAT: 760 GRE: Quantitative 168/170 (perfect 800 on earlier version) Ver... | {"url":"http://www.purplemath.com/Rolling_Meadows_Algebra_tutors.php","timestamp":"2014-04-21T15:08:32Z","content_type":null,"content_length":"23970","record_id":"<urn:uuid:6c936d8a-7ec1-4270-bdad-12e1b586ad71>","cc-path":"CC-MAIN-2014-15/segments/1398223205137.4/warc/CC-MAIN-20140423032005-00207-ip-10-147-4-33.ec2.int... |
Symbol of pseudodiff operator
up vote 5 down vote favorite
I am trying to understand the calculus of pseudodifferential operators on manifolds. All the textbooks I could put my hand on define the principal symbol of a pseudodifferential operator locally,
then prove that it transforms well, hence becomes a "global" obje... | {"url":"http://mathoverflow.net/questions/75976/symbol-of-pseudodiff-operator/75983","timestamp":"2014-04-18T18:21:03Z","content_type":null,"content_length":"67388","record_id":"<urn:uuid:08e91ae1-5dfa-4d56-8d82-f7478f6cc7ef>","cc-path":"CC-MAIN-2014-15/segments/1397609535095.7/warc/CC-MAIN-20140416005215-00600-ip-10-1... |
tomic orbitals
Atomic orbitals: 6p
The shape of the three 6p orbitals. From left to right: 6p[z], 6p[x], and 6p[y]. For each, the blue zones are where the wave functions have negative values and the gold zones denote positive values.
For any atom, there are three 6p orbitals. These orbitals have the same shape but are ... | {"url":"http://winter.group.shef.ac.uk/orbitron/AOs/6p/index.html","timestamp":"2014-04-19T01:49:01Z","content_type":null,"content_length":"17262","record_id":"<urn:uuid:287148de-63f1-437f-be2d-62c8574e5a56>","cc-path":"CC-MAIN-2014-15/segments/1397609535745.0/warc/CC-MAIN-20140416005215-00008-ip-10-147-4-33.ec2.intern... |
Finding Taylor series for f
November 17th 2011, 10:40 PM
Finding Taylor series for f
Hello there, I was having some trouble with this problem:
Find the Taylor series for f centered at 4 if:
$\[f^n(0) = \frac{(-1)^nn!}{3^n(n+1)}\]$
What is the radius of convergence of the Taylor series?
Help apprecia... | {"url":"http://mathhelpforum.com/calculus/192159-finding-taylor-series-f-print.html","timestamp":"2014-04-17T04:43:36Z","content_type":null,"content_length":"14742","record_id":"<urn:uuid:19967ae2-66e6-40f8-9be7-bc820002984e>","cc-path":"CC-MAIN-2014-15/segments/1397609526252.40/warc/CC-MAIN-20140416005206-00133-ip-10-... |
Differentiable FUnctions
September 29th 2010, 01:12 AM #1
Junior Member
Sep 2010
Differentiable FUnctions
a) Prove from definition that if
f, g : R -->R are differentiable functions, then the product function fg is also differentiable.
(b) Prove that if h : R --->R is a differentiable function that sati... | {"url":"http://mathhelpforum.com/calculus/157807-differentiable-functions.html","timestamp":"2014-04-20T06:56:14Z","content_type":null,"content_length":"47246","record_id":"<urn:uuid:dc795dd3-add3-4bfd-90d2-e7aa27aa5750>","cc-path":"CC-MAIN-2014-15/segments/1397609538022.19/warc/CC-MAIN-20140416005218-00192-ip-10-147-4... |
Isn't Algebra Necessary?
A recent New York Times article ponders if we should downgrade mathematics taught to high school and college students, and in particular, cut basic algebra.
Seriously? A horizontal line may represent an unknown word in those fill-in-the-blank primary school comprehension tests ("The dog’s name ... | {"url":"http://benlynn.blogspot.com/2012/08/isn-algebra-necessary_19.html","timestamp":"2014-04-17T15:26:42Z","content_type":null,"content_length":"67552","record_id":"<urn:uuid:c34401c0-f62a-4b63-bfa9-f0a9d528599f>","cc-path":"CC-MAIN-2014-15/segments/1398223205137.4/warc/CC-MAIN-20140423032005-00339-ip-10-147-4-33.ec... |
Introduction to Polynomials - Problem 1
Polynomials; so in this particular problem we are just going to deal a little bit with some language and some specifics by polynomials. So up here I have g(x) which is a polynomial and the first
thing we are asked is to state the degree of each term.
So basically that’s just the ... | {"url":"https://www.brightstorm.com/math/algebra-2/polynomials/introduction-to-polynomials-problem-1/","timestamp":"2014-04-21T05:08:06Z","content_type":null,"content_length":"57836","record_id":"<urn:uuid:48e177a6-9222-48c5-ae5c-9e03178218db>","cc-path":"CC-MAIN-2014-15/segments/1398223203841.5/warc/CC-MAIN-2014042303... |
How to calculate Gross Profit Ratio (Formula and Example)
In order to calculate gross profit ratio we require cost of good sold and the net sales of a company. In other words we require the revenue and the cost of goods sold figures of a company. Revenue of
the company is also called its net sales. So the formula to ca... | {"url":"http://www.grossprofitformula.com/2012/05/how-to-calculate-gross-profit-formula.html","timestamp":"2014-04-20T15:51:09Z","content_type":null,"content_length":"97820","record_id":"<urn:uuid:883a3f37-cd12-4c8f-8d5f-2dda93a96cbb>","cc-path":"CC-MAIN-2014-15/segments/1397609538824.34/warc/CC-MAIN-20140416005218-001... |
Jarque-Bera test
The Jarque-Bera test is used to check hypothesis about the fact that a given sample x[S ] is a sample of normal random variable with unknown mean and dispersion. As a rule, this test is applied
before using methods of parametric statistics which require distribution normality.
This test is based on the... | {"url":"http://www.alglib.net/hypothesistesting/jarqueberatest.php","timestamp":"2014-04-18T08:02:27Z","content_type":null,"content_length":"12775","record_id":"<urn:uuid:8466e1f5-6bfd-4865-b4f6-3f6baa8faaea>","cc-path":"CC-MAIN-2014-15/segments/1398223205137.4/warc/CC-MAIN-20140423032005-00382-ip-10-147-4-33.ec2.inter... |
[Numpy-discussion] ANN: NumPy 1.7.0b2 release
Frédéric Bastien nouiz@nouiz....
Mon Sep 24 15:25:44 CDT 2012
I tested this new beta on Theano and discovered an interface change
that was not there in the beta 1.
New behavior:
Old behavior:
This break some Theano code that look like this:
import numpy
out = numpy.zeros(ou... | {"url":"http://mail.scipy.org/pipermail/numpy-discussion/2012-September/064019.html","timestamp":"2014-04-19T12:33:19Z","content_type":null,"content_length":"7137","record_id":"<urn:uuid:c2fe8068-0866-446c-8ff7-dc0f4128ee58>","cc-path":"CC-MAIN-2014-15/segments/1397609537804.4/warc/CC-MAIN-20140416005217-00547-ip-10-14... |
Existence and Uniqueness of the Positive Definite Solution for the Matrix Equation
Abstract and Applied Analysis
Volume 2013 (2013), Article ID 216035, 4 pages
Research Article
Existence and Uniqueness of the Positive Definite Solution for the Matrix Equation
Department of Mathematics, Heze University, Heze, Shandong 2... | {"url":"http://www.hindawi.com/journals/aaa/2013/216035/ref/","timestamp":"2014-04-18T13:40:41Z","content_type":null,"content_length":"38284","record_id":"<urn:uuid:af96b102-a017-4a4b-b88b-1797e2679bf4>","cc-path":"CC-MAIN-2014-15/segments/1397609533689.29/warc/CC-MAIN-20140416005213-00394-ip-10-147-4-33.ec2.internal.w... |
Sumneytown Math Tutor
Find a Sumneytown Math Tutor
...I prefer the Phonics/Linguistic Method, so, unless parents have other materials that they want used, I always use an old Lippincott primer I have for children to practice phonics, along with
home-made flash cards. I find phonology interesting and I have done som... | {"url":"http://www.purplemath.com/Sumneytown_Math_tutors.php","timestamp":"2014-04-19T07:15:51Z","content_type":null,"content_length":"23726","record_id":"<urn:uuid:814744ac-0023-48cc-a581-3de204342e57>","cc-path":"CC-MAIN-2014-15/segments/1397609536300.49/warc/CC-MAIN-20140416005216-00408-ip-10-147-4-33.ec2.internal.w... |
An Artificial Intelligence Approach for Modeling and Prediction of Water Diffusion Inside a Carbon Nanotube
Modeling of water flow in carbon nanotubes is still a challenge for the classic models of fluid dynamics. In this investigation, an adaptive-network-based fuzzy inference system (ANFIS) is presented
to solve this... | {"url":"http://www.nanoscalereslett.com/content/4/9/1054?fmt_view=mobile","timestamp":"2014-04-19T12:50:24Z","content_type":null,"content_length":"89779","record_id":"<urn:uuid:943a99c2-8d49-47b3-9cd5-94d524202012>","cc-path":"CC-MAIN-2014-15/segments/1397609537186.46/warc/CC-MAIN-20140416005217-00055-ip-10-147-4-33.ec... |
Finding standard deviation or error from normalized data.
Hello All,
I am trying to figure out how to find the standard deviation or error in sets of data. So lets say I have sets x1, x2, x3 and x4 with various values and I found the average and standard deviations
for it. Now I have to take the averages, lets say a1, ... | {"url":"http://www.physicsforums.com/showthread.php?s=abaaeb5f3b3e2d0778193ccf2708bf5b&p=3527367","timestamp":"2014-04-19T19:39:03Z","content_type":null,"content_length":"23631","record_id":"<urn:uuid:5a8dd2e9-99c2-49a1-bb12-2adcc1efe6cd>","cc-path":"CC-MAIN-2014-15/segments/1397609537376.43/warc/CC-MAIN-20140416005217... |
A Computer Evolution in Teaching Undergraduate Time Series.
Erin M. Hodgess
University of Houston - Downtown
Journal of Statistics Education Volume 12, Number 3 (2004), www.amstat.org/publications/jse/v12n3/hodgess.html
Copyright © 2004 by Erin Hodgess, all rights reserved. This text may be freely shared among individu... | {"url":"http://www.amstat.org/publications/jse/v12n3/hodgess.html","timestamp":"2014-04-20T05:44:52Z","content_type":null,"content_length":"48788","record_id":"<urn:uuid:c1effc9f-1ab5-4dc9-a47d-755dadff457f>","cc-path":"CC-MAIN-2014-15/segments/1397609538022.19/warc/CC-MAIN-20140416005218-00179-ip-10-147-4-33.ec2.inter... |
The weak field approximation
Looks like I really don't have a feel for it. So I was working on this the other day.
(arranged in order)
http://img218.imageshack.us/img218/9613/1gx9.jpg http://img68.imageshack.us/img68/4677/2te4.jpg http://img68.imageshack.us/img68/7853/3jg9.jpg http://img68.imageshack.us/img68/6273/4qw8... | {"url":"http://www.physicsforums.com/showthread.php?t=128005","timestamp":"2014-04-18T10:44:55Z","content_type":null,"content_length":"29564","record_id":"<urn:uuid:d6454271-da93-4c39-9d10-b6456835a467>","cc-path":"CC-MAIN-2014-15/segments/1398223203422.8/warc/CC-MAIN-20140423032003-00554-ip-10-147-4-33.ec2.internal.wa... |
Two stationary positive point charges, charge 1 of
View the step-by-step solution to:
Two stationary positive point charges, charge 1 of magnitude 4.00nC and...
Home Tutors Physics Two stationary positive point ...
This question has been answered by Expert on Sep 21, 2010. View Solution
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Wolfram Demonstrations Project
Simple Graphs and Their Binomial Edge Ideals
This Demonstration illustrates the relationship between combinatorial properties of a simple graph and its binomial edge ideal (see the Details section for definitions). In particular, it can be
used to verify that a graph is closed (for a give... | {"url":"http://demonstrations.wolfram.com/SimpleGraphsAndTheirBinomialEdgeIdeals/","timestamp":"2014-04-18T18:12:28Z","content_type":null,"content_length":"45561","record_id":"<urn:uuid:e7f8eb57-47de-436d-9662-0ef615a2ef5d>","cc-path":"CC-MAIN-2014-15/segments/1397609535095.7/warc/CC-MAIN-20140416005215-00242-ip-10-147... |
K.: Messy genetic algorithms: Motivation, analysis, and first results
Results 1 - 10 of 270
, 2000
"... Multi-objective evolutionary algorithms which use non-dominated sorting and sharing have been mainly criticized for their (i) O(MN computational complexity (where M is the number of objectives
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Suppose the unit square is divided into four parts by two perp... | {"url":"http://openstudy.com/updates/4f0d995be4b084a815fcd960","timestamp":"2014-04-17T12:51:15Z","content_type":null,"content_length":"72278","record_id":"<urn:uuid:5b163f5f-ca13-4bbb-a0f9-11826b9dfae7>","cc-path":"CC-MAIN-2014-15/segments/1397609530131.27/warc/CC-MAIN-20140416005210-00630-ip-10-147-4-33.ec2.internal.... |
Friday, March 30, 2012 Game Recap & Discussion [SPOILERS]
dhkendall wrote: I've heard of "Fermat's Last Theorem", but that's almost all I know about it. The only other thing I know about it is that it's some impossible math thing that wasn't proven
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Silicon Raman amplifiers, lasers, and their applications
Conference Proceeding
Silicon Raman amplifiers, lasers, and their applications
Dept. of Electr. Eng., California Univ., Los Angeles, CA, USA
10/2005; DOI:10.1109/GROUP4.2005.1516397 ISBN: 0-7803-9070-9 In proceeding of: Group IV Photonics, 2005. 2nd IEEE Internat... | {"url":"http://www.researchgate.net/publication/4179088_Silicon_Raman_amplifiers_lasers_and_their_applications","timestamp":"2014-04-23T08:06:52Z","content_type":null,"content_length":"209296","record_id":"<urn:uuid:bed96c4c-3cdf-45a9-aaa2-a53fbca10e81>","cc-path":"CC-MAIN-2014-15/segments/1398223201753.19/warc/CC-MAIN... |
SPOJ.com - Problem CODESPTC
SPOJ Problem Set (classical)
9723. Card Shuffling
Problem code: CODESPTC
Here is an algorithm for shuffling N cards:
1) The cards are divided into K equal piles, where K is a factor of N.
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Below are the first 10 and last 10 pages of uncorrected machine-read text (when available) of this chapter, followed by the top 30 algorithmically extracted key phrases from the chapter as a whole.
Intended to provide our own search engines and external engines with highly rich, chapter-representative searchable text o... | {"url":"http://www.nap.edu/openbook.php?record_id=14360&page=59","timestamp":"2014-04-19T07:58:05Z","content_type":null,"content_length":"54437","record_id":"<urn:uuid:4b6d42f5-b232-4bef-b9ea-02f6ea71989e>","cc-path":"CC-MAIN-2014-15/segments/1397609536300.49/warc/CC-MAIN-20140416005216-00450-ip-10-147-4-33.ec2.interna... |
Posts about math on Gas station without pumps
Sam Shah and other math bloggers have started a challenge to encourage more math-teacher blogging Mission #1: The Power of The Blog | Exploring the MathTwitterBlogosphere:
You are going to write a blog post on one of the following two prompts:
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Fast polynomial factorization and modular composition
when quoting this document, please refer to the following
URN: urn:nbn:de:0030-drops-17771
URL: http://drops.dagstuhl.de/opus/volltexte/2008/1777/ Kedlaya, Kiran ; Umans, Christopher
Fast polynomial factorization and modular composition
We obtain randomized algorith... | {"url":"http://drops.dagstuhl.de/opus/volltexte/2008/1777/","timestamp":"2014-04-17T06:47:45Z","content_type":null,"content_length":"10212","record_id":"<urn:uuid:7dce8798-bb20-4548-9d5f-f140fed89e76>","cc-path":"CC-MAIN-2014-15/segments/1397609526311.33/warc/CC-MAIN-20140416005206-00663-ip-10-147-4-33.ec2.internal.war... |
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This Article
Bibliographic References
Add to:
Space-Variant Fourier Analysis: The Exponential Chirp Transform
October 1997 (vol. 19 no. 10)
pp. 1080-1089
ASCII Text ... | {"url":"http://www.computer.org/csdl/trans/tp/1997/10/i1080-abs.html","timestamp":"2014-04-19T03:15:50Z","content_type":null,"content_length":"62464","record_id":"<urn:uuid:82903b60-92a3-4b1d-9f53-7312a1daeb5c>","cc-path":"CC-MAIN-2014-15/segments/1398223206120.9/warc/CC-MAIN-20140423032006-00502-ip-10-147-4-33.ec2.int... |
Cryptology ePrint Archive: Report 2009/460
Asymptotic enumeration of correlation-immune boolean functionsE. Rodney Canfield and Zhicheng Gao and Catherine Greenhill and Brendan D. McKay and Robert W. RobinsonAbstract: A boolean function of n
boolean variables is correlation-immune of order k if the function value is un... | {"url":"http://eprint.iacr.org/2009/460","timestamp":"2014-04-17T13:13:06Z","content_type":null,"content_length":"2877","record_id":"<urn:uuid:4da2a9ae-f9c3-4b5a-a223-b58e42b8de62>","cc-path":"CC-MAIN-2014-15/segments/1398223211700.16/warc/CC-MAIN-20140423032011-00235-ip-10-147-4-33.ec2.internal.warc.gz"} |
FOM: "Was sind und was sollen die Zahlen"
Vladimir Sazonov sazonov at logic.botik.ru
Tue Nov 11 16:38:23 EST 1997
Let me finish description of some aspects of formalizing
Feasible Arithmetic. (This is a third message on this subject to
FOM list.) I hope that after reading the following part the idea
of this formalizati... | {"url":"http://www.cs.nyu.edu/pipermail/fom/1997-November/000218.html","timestamp":"2014-04-20T01:10:20Z","content_type":null,"content_length":"9810","record_id":"<urn:uuid:1fbeebb7-63ef-4171-b001-f88fd65715ef>","cc-path":"CC-MAIN-2014-15/segments/1398223203235.2/warc/CC-MAIN-20140423032003-00152-ip-10-147-4-33.ec2.int... |
Users Manual for LS-DYNA Concrete Material Model 159
PDF Version
(1.49 KB)
PDF files can be viewed with the Acrobat® Reader®
Chapte... | {"url":"http://www.fhwa.dot.gov/publications/research/infrastructure/pavements/05062/chapt4.cfm","timestamp":"2014-04-19T03:00:13Z","content_type":null,"content_length":"11393","record_id":"<urn:uuid:62673b7a-13ef-4fc0-afb5-72819f2cdff4>","cc-path":"CC-MAIN-2014-15/segments/1397609535745.0/warc/CC-MAIN-20140416005215-0... |
On Langlands Pairing and transfer factors
up vote 5 down vote favorite
In the paper "On the definition of transfer factors" Langlands and Shelstad define a certain number of factors $\Delta_{I}$, $\Delta_{II}$,$\Delta_{III,1}$,$\Delta_{III,2}$, which are roots of unity.
Let consider the easy case where $G=SL_{2}$ over ... | {"url":"https://mathoverflow.net/questions/115341/on-langlands-pairing-and-transfer-factors","timestamp":"2014-04-17T18:41:15Z","content_type":null,"content_length":"46603","record_id":"<urn:uuid:30b3cfb3-7c8f-41de-b37d-300dd11bc212>","cc-path":"CC-MAIN-2014-15/segments/1397609530895.48/warc/CC-MAIN-20140416005210-0052... |
[FOM] Formalization Thesis vs Formal nature of mathematics
Vladimir Sazonov Vladimir.Sazonov at liverpool.ac.uk
Sat Dec 29 20:24:30 EST 2007
The question discussed so far is whether any mathematical theorem and
its proof can be formalized, say, in ZFC. It appears as if
"mathematical" is something which exists and makes... | {"url":"http://www.cs.nyu.edu/pipermail/fom/2007-December/012399.html","timestamp":"2014-04-17T12:29:45Z","content_type":null,"content_length":"7874","record_id":"<urn:uuid:5b6b84f2-94d1-4cb3-9fc4-b95127646716>","cc-path":"CC-MAIN-2014-15/segments/1397609530131.27/warc/CC-MAIN-20140416005210-00587-ip-10-147-4-33.ec2.in... |
Posts Tagged with 'Calculus'—Wolfram|Alpha Blog
Another year has flown by here at Wolfram|Alpha, and the gears are really turning! New data and features are flowing at a rapid rate. To celebrate, Wolfram|Alpha’s creator, Stephen Wolfram, will
share what we’ve been working on and take your questions in a live Q&A.
Pleas... | {"url":"http://blog.wolframalpha.com/tag/calculus/","timestamp":"2014-04-21T09:36:47Z","content_type":null,"content_length":"102432","record_id":"<urn:uuid:f64a9f6b-8ae7-4285-85f3-435f81b86e44>","cc-path":"CC-MAIN-2014-15/segments/1397609539705.42/warc/CC-MAIN-20140416005219-00625-ip-10-147-4-33.ec2.internal.warc.gz"} |
Operations Research/Graphical LP solution
We will now attempt to find an optimal solution to the linear programming model we introduced in the previous section. The method we will employ is known as the graphical method and can be applied to
any problem with two decision variables. It basically consists of two steps: F... | {"url":"http://en.m.wikibooks.org/wiki/Operations_Research/Graphical_LP_solution","timestamp":"2014-04-20T15:54:29Z","content_type":null,"content_length":"20204","record_id":"<urn:uuid:ecef4423-1253-4ff8-bac1-e6da9f2e1c20>","cc-path":"CC-MAIN-2014-15/segments/1398223210034.18/warc/CC-MAIN-20140423032010-00380-ip-10-147... |
Richlandtown Math Tutor
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Erik D. Demaine
Paper by Erik D. Demaine
Erik D. Demaine and MohammadTaghi Hajiaghayi, “Bidimensionality: New Connections between FPT Algorithms and PTASs”, in Proceedings of the 16th Annual ACM-SIAM Symposium on Discrete Algorithms (
SODA 2005), Vancouver, British Columbia, Canada, January 23–25, 2005, pages ... | {"url":"http://erikdemaine.org/papers/GenApprox_SODA2005/","timestamp":"2014-04-21T07:43:49Z","content_type":null,"content_length":"6116","record_id":"<urn:uuid:bf4a79a2-d338-43c2-8799-1b1f26ac7c06>","cc-path":"CC-MAIN-2014-15/segments/1398223206672.15/warc/CC-MAIN-20140423032006-00300-ip-10-147-4-33.ec2.internal.warc.... |
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[SciPy-user] NNLS in scipy
Christian Meesters meesters@uni-mainz...
Sun Jun 15 14:07:23 CDT 2008
I'd like to perform some "non-negatively constraint least squares"
algorithm to fit my data, like this:
Signal = SUM a_i C_i
where C_i is some simulated signal and a_i the amplitude contributed by
that simulated signal. Or ... | {"url":"http://mail.scipy.org/pipermail/scipy-user/2008-June/017203.html","timestamp":"2014-04-17T18:40:04Z","content_type":null,"content_length":"3031","record_id":"<urn:uuid:95bbf3b6-b2b0-4613-8abe-ed354ae26050>","cc-path":"CC-MAIN-2014-15/segments/1397609532573.41/warc/CC-MAIN-20140416005212-00236-ip-10-147-4-33.ec2... |
Elimination of Arbitrary Constants
Introduction to elimination of arbitrary constants
The Differential Equations which have only one independent variable are called Ordinary. In the above equations x is the independent variable and y is the dependent variable. The Equations which have
two or more independent variables ... | {"url":"http://basicmath.livejournal.com/9414.html","timestamp":"2014-04-20T00:56:57Z","content_type":null,"content_length":"59783","record_id":"<urn:uuid:3f1177c5-f486-4704-9913-13cb993c407c>","cc-path":"CC-MAIN-2014-15/segments/1397609537804.4/warc/CC-MAIN-20140416005217-00161-ip-10-147-4-33.ec2.internal.warc.gz"} |
Further Musings on
Further Musings on "Multiplicand" and "Multiplier"
Date: 06/09/2011 at 22:12:56
From: Carter
Subject: clarification of math terms of multiplicand and multiplier
I have seen Dr. Math's answer to the definition of multiplicand and
multiplier, and would like to share my thoughts.
Consider the possible ... | {"url":"http://mathforum.org/library/drmath/view/76738.html","timestamp":"2014-04-20T21:21:58Z","content_type":null,"content_length":"8559","record_id":"<urn:uuid:7d83ca37-7b68-4547-a9ab-d03f128572e3>","cc-path":"CC-MAIN-2014-15/segments/1397609539337.22/warc/CC-MAIN-20140416005219-00082-ip-10-147-4-33.ec2.internal.war... |
Sum of first 100 Natural numbers
If the qustion of sum of first 100 natural numbers is asked most people will readily answer as 5050 using n(n+1)/2 formula. When thesame question was asked to Carl Frederick Gauss, the greatest
mathematician ever lived, when he was barely 5 years old, he solved it in a most natural and ... | {"url":"http://www.kesavan8.blogspot.com/","timestamp":"2014-04-20T15:51:37Z","content_type":null,"content_length":"17789","record_id":"<urn:uuid:55c19db1-88c2-4f7d-95bb-cd9850d753e3>","cc-path":"CC-MAIN-2014-15/segments/1397609538824.34/warc/CC-MAIN-20140416005218-00287-ip-10-147-4-33.ec2.internal.warc.gz"} |
SI unit prefixes: a plea for sanity
Computer programmers can skip to the next sub-heading.
Computers work in binary. They measure things in binary numbers internally, at the hardware level. While you are seeing letters and decimal numbers on this page, the computer just sees streams of 1s
and 0s. The successive digits ... | {"url":"http://lpar.ath0.com/2008/07/15/si-unit-prefixes-a-plea-for-sanity/","timestamp":"2014-04-20T13:51:43Z","content_type":null,"content_length":"37561","record_id":"<urn:uuid:1a168452-11cb-472f-8eac-8ceb5f0451a5>","cc-path":"CC-MAIN-2014-15/segments/1397609538787.31/warc/CC-MAIN-20140416005218-00260-ip-10-147-4-33... |
A model of the universe is a mathematical description of how the scale factor R(t) evolves with time. In this chapter we develop some models of the universe.
As a first approximation, consider the analogy of the Newtonian ball of self-gravitating particles. Gravity acts to try to pull the ball together. If the ball is ... | {"url":"http://www.astro.virginia.edu/~jh8h/Foundations/chapter11/chapter11.html","timestamp":"2014-04-17T13:15:19Z","content_type":null,"content_length":"10026","record_id":"<urn:uuid:dc19d383-6ed5-4513-b9e4-5f30badc8af1>","cc-path":"CC-MAIN-2014-15/segments/1398223211700.16/warc/CC-MAIN-20140423032011-00291-ip-10-147... |
Math Help
September 7th 2009, 08:47 AM #1
Feb 2009
i am graphing objects by using level sets (setting z=a constant) and sections (setting x and y = a constant)
i have to sketch..
1.) f (x,y)= -2
2.) g(x,y)= cosy
3.) h(x,y)= 1-x
any pointers/hints on how to do any of these? the first one doe... | {"url":"http://mathhelpforum.com/calculus/100941-vectors.html","timestamp":"2014-04-19T01:56:32Z","content_type":null,"content_length":"32851","record_id":"<urn:uuid:90c9142c-5495-4a45-a7af-3673a5617203>","cc-path":"CC-MAIN-2014-15/segments/1397609535745.0/warc/CC-MAIN-20140416005215-00585-ip-10-147-4-33.ec2.internal.w... |
Guidelines for Convergence Authors
MAA Convergence (where mathematics, history, and teaching converge!) publishes articles about the history of mathematics and its use in teaching. It is aimed at teachers of mathematics at both the
secondary and collegiate levels. Preference is given to topics from grades 8-16 mathemat... | {"url":"http://www.maa.org/publications/periodicals/convergence/guidelines-for-convergence-authors?device=desktop","timestamp":"2014-04-17T13:23:37Z","content_type":null,"content_length":"101450","record_id":"<urn:uuid:48c63efa-21fa-4358-9fdb-b045e2a347ed>","cc-path":"CC-MAIN-2014-15/segments/1397609537804.4/warc/CC-MA... |
Number of config. of a binary string invariant under cyclic permutation.
up vote 0 down vote favorite
The following combinatorial problem has bothered me quite a bit. I guess people smarter than me have given the problem some taught as the problem has obvious applications (e.g. to the Ising model),
but I have not found... | {"url":"https://mathoverflow.net/questions/26443/number-of-config-of-a-binary-string-invariant-under-cyclic-permutation","timestamp":"2014-04-23T20:13:06Z","content_type":null,"content_length":"56696","record_id":"<urn:uuid:80260148-b645-43f6-8884-289811b3f227>","cc-path":"CC-MAIN-2014-15/segments/1398223203422.8/warc/... |
Northridge SAT Math Tutor
Find a Northridge SAT Math Tutor
...I have been a math tutor for 3 years. I have been trained how to be a good tutor, that is, I will try not to write anything when I explain concepts to my tutee because according to the tutoring
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The Standard Cosmological Model
2.1 The Cosmological Principle
Pietronero [13] argues that the evidence from redshift catalogs and deep galaxy counts is that the galaxy distribution is best described as a scale-invariant fractal with dimension D ~ 2. Others
disagree ([14], [15]). I am heavily influenced by another ... | {"url":"http://ned.ipac.caltech.edu/level5/Peebles1/Peeb2_1.html","timestamp":"2014-04-18T10:40:32Z","content_type":null,"content_length":"10313","record_id":"<urn:uuid:2c0c566c-e063-4ee2-b4b9-d66ca462c9db>","cc-path":"CC-MAIN-2014-15/segments/1398223211700.16/warc/CC-MAIN-20140423032011-00557-ip-10-147-4-33.ec2.intern... |
Umesh Vazirani, and Vijay Vazirani. Matching is as easy as matrix inversion
, 2012
"... Let G be a directed graph with n vertices and non-negative weights in its directed edges, embedded on a surface of genus g, and let f be an arbitrary face of G. We describe an algorithm to
preprocess the graph in O(gn log n) time, s... | {"url":"http://citeseerx.ist.psu.edu/showciting?cid=6999892","timestamp":"2014-04-18T17:37:00Z","content_type":null,"content_length":"23251","record_id":"<urn:uuid:ea499c93-5303-47b3-9c2f-f84cb3b23582>","cc-path":"CC-MAIN-2014-15/segments/1397609533957.14/warc/CC-MAIN-20140416005213-00111-ip-10-147-4-33.ec2.internal.wa... |
When do 0-preserving isometries have to be linear?
up vote 2 down vote favorite
Let $\langle \mathbf{V},+,\cdot,||.|| \rangle$ be a normed vector space over $\mathbb{R}$.
Let $f : \mathbf{V} \to \mathbf{V}$ be an isometry that satisfies $f(\mathbf{0}) = \mathbf{0}$ .
What conditions on the vector space would or would n... | {"url":"http://mathoverflow.net/questions/62380/when-do-0-preserving-isometries-have-to-be-linear/62382","timestamp":"2014-04-18T06:03:10Z","content_type":null,"content_length":"56821","record_id":"<urn:uuid:7e402035-d53a-4959-9fc4-08fe420b0f6a>","cc-path":"CC-MAIN-2014-15/segments/1397609532573.41/warc/CC-MAIN-2014041... |
solving for exteriors in a triangle
December 1st 2010, 06:22 PM #1
solving for exteriors in a triangle
I have very basic question about Alt. Ext
if a have a triangle with the hypothenus facing right, and te to legs make a 90degree angle i have one say is X and the exterior is Y how do i find this?
Huh? What... | {"url":"http://mathhelpforum.com/geometry/165013-solving-exteriors-triangle.html","timestamp":"2014-04-20T09:38:11Z","content_type":null,"content_length":"38067","record_id":"<urn:uuid:43c3dd42-de3e-4b09-86e8-65a3193e50f3>","cc-path":"CC-MAIN-2014-15/segments/1397609538110.1/warc/CC-MAIN-20140416005218-00309-ip-10-147-... |
Borrego Springs Geometry Tutors
...I enjoy the challenge of finding these shortcomings and correcting them. Usually students find that once these are taken care of, they are free to soar. Oh the wonderfully weird trig!
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All in one Explorer
All in one Explorer for Amibroker (AFL)
Here i uploaded a afl which is a combination of some indicator. This afl was modified by Manish.
Go to auto-analyser, In formula file pick the afl and click explore. It will explore for signals using many different indicators.
Here is a screenshot of how the ... | {"url":"http://www.wisestocktrader.com/indicators/1106-all-in-one-explorer","timestamp":"2014-04-16T13:16:59Z","content_type":null,"content_length":"23391","record_id":"<urn:uuid:90c21360-7a87-4a87-9c2a-1b660fb89e2a>","cc-path":"CC-MAIN-2014-15/segments/1397609523429.20/warc/CC-MAIN-20140416005203-00418-ip-10-147-4-33.... |
[Numpy-discussion] untenable matrix behavior in SVN
Stéfan van der Walt stefan@sun.ac...
Tue Apr 29 08:24:58 CDT 2008
Hi Charles
2008/4/29 Charles R Harris <charlesr.harris@gmail.com>:
> May I add that if I edit defmatrix.py to act like an array for scalar
> indexing, then the following works.
> In [1]: a = matrix(eye(... | {"url":"http://mail.scipy.org/pipermail/numpy-discussion/2008-April/033308.html","timestamp":"2014-04-16T17:01:30Z","content_type":null,"content_length":"4000","record_id":"<urn:uuid:fa9e7082-3e36-405d-9266-c78b3fb90e29>","cc-path":"CC-MAIN-2014-15/segments/1397609532374.24/warc/CC-MAIN-20140416005212-00542-ip-10-147-4... |
Mathematical Proof/Methods of Proof/Proof by Induction
The beauty of induction is that it allows a theorem to be proven true where an infinite number of cases exist without exploring each case individually. Induction is analogous to an infinite row of
dominoes with each domino standing on its end. If you want to make a... | {"url":"http://en.m.wikibooks.org/wiki/Mathematical_Proof/Methods_of_Proof/Proof_by_Induction","timestamp":"2014-04-19T14:35:02Z","content_type":null,"content_length":"27648","record_id":"<urn:uuid:80ec7e82-fcf9-442d-959f-56ae046b0a9d>","cc-path":"CC-MAIN-2014-15/segments/1397609537271.8/warc/CC-MAIN-20140416005217-006... |
Classical Electrodynamics, 3rd Edition
Classical Electrodynamics, 3rd Edition
ISBN: 978-0-471-30932-1
832 pages
August 1998, ©1999
A revision of the defining book covering the physics and classical mathematics necessary to understand electromagnetic fields in materials and at surfaces and interfaces. The third editio... | {"url":"http://www.wiley.com/WileyCDA/WileyTitle/productCd-047130932X.html","timestamp":"2014-04-16T04:21:20Z","content_type":null,"content_length":"42768","record_id":"<urn:uuid:73ff1f49-beed-4879-9ac5-59111de5c9b0>","cc-path":"CC-MAIN-2014-15/segments/1397609539230.18/warc/CC-MAIN-20140416005219-00331-ip-10-147-4-33.... |
Smooth graphs
L. Soukup:
Smooth graphs
A graph G on omega_1 is called <omega-smooth if for each uncountable subset W of omega_1, G is isomorphic to G[W-W'] for some finite W'. We show that in various models of ZFC if a graph G is
<omega-smooth then G is necessarily trivial, i.e, either complete or empty. On the other h... | {"url":"http://www.renyi.hu/pub/setop/sme.html","timestamp":"2014-04-18T08:41:46Z","content_type":null,"content_length":"1119","record_id":"<urn:uuid:d5fe39a1-9dac-4be4-a12c-18246f140764>","cc-path":"CC-MAIN-2014-15/segments/1397609533121.28/warc/CC-MAIN-20140416005213-00403-ip-10-147-4-33.ec2.internal.warc.gz"} |
Can anyone tell me about how to use the local density approximation in
How do you mean 'use'? LDA is not a functional in itself, it's an ansatz, assuming the exchange-correlation energy for each point in the density can be described by each point in the density. Hence
[tex]E_{xc}[\rho] = \int \rho(r)\epsilon(\rho(r))dr... | {"url":"http://www.physicsforums.com/showthread.php?t=409959","timestamp":"2014-04-21T12:10:53Z","content_type":null,"content_length":"23452","record_id":"<urn:uuid:ac4e6537-bd7c-4792-a7b0-37f9109e0fd9>","cc-path":"CC-MAIN-2014-15/segments/1397609539776.45/warc/CC-MAIN-20140416005219-00564-ip-10-147-4-33.ec2.internal.w... |
[Numpy-discussion] tensor dot ?
Travis Oliphant oliphant.travis at ieee.org
Mon Aug 28 22:03:29 CDT 2006
Simon Burton wrote:
>>>> numpy.dot.__doc__
> matrixproduct(a,b)
> Returns the dot product of a and b for arrays of floating point types.
> Like the generic numpy equivalent the product sum is over
> the last dimensi... | {"url":"http://mail.scipy.org/pipermail/numpy-discussion/2006-August/010361.html","timestamp":"2014-04-16T16:12:30Z","content_type":null,"content_length":"3658","record_id":"<urn:uuid:fe149fc3-a76e-46fe-89b1-2585dae73a8b>","cc-path":"CC-MAIN-2014-15/segments/1397609524259.30/warc/CC-MAIN-20140416005204-00647-ip-10-147-... |
erimeter of a rhombus
Perimeter of a rhombus
Definition: The total distance around the outside of a
Try this Drag any orange dot to resize the rhombus. The perimeter is calculated as you drag.
How to find the perimeter of a rhombus
Like any polygon, the perimeter is the total distance around the outside, which can be f... | {"url":"http://www.mathopenref.com/rhombusperimeter.html","timestamp":"2014-04-17T04:25:21Z","content_type":null,"content_length":"13415","record_id":"<urn:uuid:048da19c-10c7-4d9a-9135-168b1b87eb62>","cc-path":"CC-MAIN-2014-15/segments/1397609526252.40/warc/CC-MAIN-20140416005206-00501-ip-10-147-4-33.ec2.internal.warc.... |
Homomorphisms and Factor Rings
February 21st 2013, 02:12 AM
Homomorphisms and Factor Rings
Let R and R' be rings and let N and N' be ideals of R and R' respectively.
Let $\phi$ be a homomorphism of R into R'.
Show that $\phi$ induces a natural homomorphism $\phi_* : R/N \rightarrow R'/N'$ if $\ \ \phi [N] \... | {"url":"http://mathhelpforum.com/advanced-algebra/213536-homomorphisms-factor-rings-print.html","timestamp":"2014-04-17T15:45:14Z","content_type":null,"content_length":"5767","record_id":"<urn:uuid:b50f6010-1b9f-47fc-ae90-04c6c3676dc1>","cc-path":"CC-MAIN-2014-15/segments/1397609530136.5/warc/CC-MAIN-20140416005210-004... |
Real Analysis - Sequences 3
d.) Assuming this sequence is in the metric space $(M,d)$, if $\{b_n\}$ converges, then it is bounded. ( $\exists x_0\in M, R\in\mathbb{R}$ such that $d(x_0,b_n)<R~\forall n$) So $d(a_n,x_0)-R<d
(a_n,b_n)~\forall n$. (Triangle Inequality) But since $\{a_n\}$ is unbounded, so is $d(a_n,x_0)$,... | {"url":"http://mathhelpforum.com/differential-geometry/129128-real-analysis-sequences-3-a.html","timestamp":"2014-04-17T08:56:34Z","content_type":null,"content_length":"47077","record_id":"<urn:uuid:c86839f7-7e01-4389-bd2b-07f848949e27>","cc-path":"CC-MAIN-2014-15/segments/1397609526311.33/warc/CC-MAIN-20140416005206-0... |
188 helpers are online right now
75% of questions are answered within 5 minutes.
is replying to Can someone tell me what button the professor is hitting...
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differentiable function
May 18th 2010, 12:52 PM #1
differentiable function
suppose that f is a differentiable function with the derivative f'(x)=(x-1)(x+2)(x+3). determine the values of x for which the function f is increasing and the values for x for which the function
is decreasing
Should just be a simple... | {"url":"http://mathhelpforum.com/calculus/145368-differentiable-function.html","timestamp":"2014-04-18T11:52:12Z","content_type":null,"content_length":"32630","record_id":"<urn:uuid:a71b6955-aba3-4150-b127-f1221bea42d4>","cc-path":"CC-MAIN-2014-15/segments/1398223207046.13/warc/CC-MAIN-20140423032007-00264-ip-10-147-4-... |
Natural numbers
So, regarding the inclusion of the zero or not, I prefer to include it, because:
(1) If you construct the naturals from set theory, then you start from the empty set, which is taken as 0, and obtain the others by applying successive applications of the successor function.
however ultimately irrelevant i... | {"url":"http://www.physicsforums.com/showthread.php?t=367572","timestamp":"2014-04-18T21:22:07Z","content_type":null,"content_length":"57817","record_id":"<urn:uuid:79273050-e9a8-4698-ba30-f82f180e21ba>","cc-path":"CC-MAIN-2014-15/segments/1398223207046.13/warc/CC-MAIN-20140423032007-00192-ip-10-147-4-33.ec2.internal.w... |
Vector equation of a plane
March 28th 2011, 03:35 PM
Vector equation of a plane
Write a vector and parametric equation for a plane that:
b) contains (-5,9,-3) and is parallel to [x,y,z] = [1, -2, 7] + s[4, -1, -3] and
[x,y,z] = [7,-2,15] + t[1,6,-8]
I'm not sure where to start. Usually, when asking for ... | {"url":"http://mathhelpforum.com/advanced-algebra/176112-vector-equation-plane-print.html","timestamp":"2014-04-16T16:08:34Z","content_type":null,"content_length":"5413","record_id":"<urn:uuid:5acad14f-eb35-4aba-9da4-5089d19e919e>","cc-path":"CC-MAIN-2014-15/segments/1397609524259.30/warc/CC-MAIN-20140416005204-00178-i... |
Orange, NJ Precalculus Tutor
Find an Orange, NJ Precalculus Tutor
...I have tutored in all these subjects at one point or another, all achieving a high success rate with each student: Mathematics (Algebra, Geometry, Trigonometry, Pre-Calculus, Calculus, SAT II,
etc); SAT Prep (Primarily English & Math); ACT Prep (P... | {"url":"http://www.purplemath.com/Orange_NJ_precalculus_tutors.php","timestamp":"2014-04-19T02:40:39Z","content_type":null,"content_length":"24094","record_id":"<urn:uuid:856bad3d-de54-4039-9d8d-bf315b36aed6>","cc-path":"CC-MAIN-2014-15/segments/1398223206770.7/warc/CC-MAIN-20140423032006-00155-ip-10-147-4-33.ec2.inter... |
Dacono SAT Tutor
Find a Dacono SAT Tutor
...My promise: your student will get great grades/scores and be less stressed while doing it. Here's what I offer to each student: -Immediate results & customized individual feedback -Keep track
of what your student needs to focus on daily, weekly, and for the whole semester... | {"url":"http://www.purplemath.com/dacono_sat_tutors.php","timestamp":"2014-04-19T10:11:44Z","content_type":null,"content_length":"23431","record_id":"<urn:uuid:cf037350-39c6-426d-b2b9-01d93e6d3c3f>","cc-path":"CC-MAIN-2014-15/segments/1398223207046.13/warc/CC-MAIN-20140423032007-00229-ip-10-147-4-33.ec2.internal.warc.g... |
Frontiers in Science Colloquium
Date/Time/Room: Friday (3/2/2001) at 12:00 noon in 114 Chemistry Research Building
Speaker: Hal L. Smith, Department of Mathematics, Arizona State University
``How Many Species Can a Given Number of Resources Support?''... | {"url":"http://www.uta.edu/math/pages/main/abstracts/smith_3_2_01.html","timestamp":"2014-04-23T16:43:28Z","content_type":null,"content_length":"2715","record_id":"<urn:uuid:0c90f9de-71db-4d59-88de-08b4f2170c42>","cc-path":"CC-MAIN-2014-15/segments/1398223202774.3/warc/CC-MAIN-20140423032002-00060-ip-10-147-4-33.ec2.in... |
uniform continuity theorem
May 20th 2010, 09:34 AM #1
Junior Member
Apr 2010
uniform continuity theorem
The uniform continuity theorem says if f: A->N is continuous and Kin A is compact, then f is uniformly continuous on K.
But if I take 1/n on [0,1] it is not uniformly continuous because as we approach 0 f... | {"url":"http://mathhelpforum.com/differential-geometry/145722-uniform-continuity-theorem.html","timestamp":"2014-04-20T21:08:27Z","content_type":null,"content_length":"38611","record_id":"<urn:uuid:bfb33f20-6772-47cc-8311-7b2444b92c56>","cc-path":"CC-MAIN-2014-15/segments/1397609539230.18/warc/CC-MAIN-20140416005219-00... |
Artificial Intelligence: Problem Set 1
Assigned: Jan. 18
Due: Feb. 8 (NOte: Due date changed because class was cancelled for snow on Jan. 25)
The BIN-PACKING PROBLEM problem is defined as follows: You are given and a collection of N objects with sizes S[1] ... S[N]. The problem is to pack these objects into bins of siz... | {"url":"http://cs.nyu.edu/courses/spring00/G22.2560-001/hwk1.html","timestamp":"2014-04-21T14:40:57Z","content_type":null,"content_length":"5316","record_id":"<urn:uuid:f7178828-332d-4c65-9f38-a3d83828e23b>","cc-path":"CC-MAIN-2014-15/segments/1398223202548.14/warc/CC-MAIN-20140423032002-00046-ip-10-147-4-33.ec2.intern... |
What is the distance from the point (1,-3,8) to the x-axis? - WyzAnt Answers
What is the distance from the point (1,-3,8) to the x-axis?
What is the distance from the point (1,-3,8) to the x-axis? This is a calculus 3 question.
Tutors, please
to answer this question.
Drop perpendicular to the x-axis, it intersects x-ax... | {"url":"http://www.wyzant.com/resources/answers/13517/what_is_the_distance_from_the_point_1_3_8_to_the_x_axis","timestamp":"2014-04-21T00:47:52Z","content_type":null,"content_length":"45417","record_id":"<urn:uuid:ec763bc8-d243-4d4e-81d5-19dc6161e266>","cc-path":"CC-MAIN-2014-15/segments/1397609539337.22/warc/CC-MAIN-2... |
Kids.Net.Au - Encyclopedia > User:Egil Sandbox
are 100 m^2
liter 1000 cc The liter was defined in 1901 as the
oldliter[?] 1.000028 dm^3 space occupied by 1 kg of pure water at
l liter the temperature of its maximum density
under a pres... | {"url":"http://encyclopedia.kids.net.au/page/us/User:Egil___Sandbox?title=Usfluidounce","timestamp":"2014-04-20T00:46:11Z","content_type":null,"content_length":"194838","record_id":"<urn:uuid:f5e5f6e9-f935-4785-a519-9ee226c7a5df>","cc-path":"CC-MAIN-2014-15/segments/1397609537804.4/warc/CC-MAIN-20140416005217-00429-ip-... |
st: RE: -infix- problem?
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st: RE: -infix- problem?
From "Nick Cox" <n.j.cox@durham.ac.uk>
To <statalist@hsphsun2.harvard.edu>
Subject st: RE: -infix- problem?
Date Tue, 13 May 2008 14:56:22 +0100
This is arguable. The help of -infix- d... | {"url":"http://www.stata.com/statalist/archive/2008-05/msg00475.html","timestamp":"2014-04-18T22:12:36Z","content_type":null,"content_length":"8230","record_id":"<urn:uuid:01567c5a-f062-4498-bceb-77f73c942ae0>","cc-path":"CC-MAIN-2014-15/segments/1397609539705.42/warc/CC-MAIN-20140416005219-00181-ip-10-147-4-33.ec2.int... |
HowStuffWorks "Someone told me that if there are 20 people in a room, there's a 50/50 chance that two of them will have the same birthday. How can that be?"
This phenomenon actually has a name -- it is called the birthday paradox, and it turns out it is useful in several different areas (for example, cryptography and h... | {"url":"http://www.howstuffworks.com/question261.htm","timestamp":"2014-04-16T13:03:37Z","content_type":null,"content_length":"119122","record_id":"<urn:uuid:ce5985f2-a517-4e98-931e-ba26a489f58c>","cc-path":"CC-MAIN-2014-15/segments/1397609523429.20/warc/CC-MAIN-20140416005203-00028-ip-10-147-4-33.ec2.internal.warc.gz"... |