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Coordinate-free derivation of the Einstein's field equation from the Hilbert action.
up vote 7 down vote favorite
It is well-known that the equation for stationary solutions of the Einstein-Hilbert functional (without matter and cosmological constant, which is irrelevant here):
$$S = \int_M R \mu_g,$$ is given by the E... | {"url":"https://mathoverflow.net/questions/106786/coordinate-free-derivation-of-the-einsteins-field-equation-from-the-hilbert-act/106792","timestamp":"2014-04-16T11:04:08Z","content_type":null,"content_length":"52847","record_id":"<urn:uuid:29e60fcc-be53-4f47-81ea-2c019e925319>","cc-path":"CC-MAIN-2014-15/segments/1397... |
Partial Fraction Decompositions
Partial Fraction Decompositions
General partial fraction decomposition is technically complicated and involves several cases. ... of the partial factor decomposition depends on the type of ... – PowerPoint PPT presentation
Number of Views:525
Avg rating:3.0/5.0
Slides: 22
Added by: Anony... | {"url":"http://www.powershow.com/view/128c3f-ZjQxN/Partial_Fraction_Decompositions_powerpoint_ppt_presentation","timestamp":"2014-04-19T06:56:51Z","content_type":null,"content_length":"96638","record_id":"<urn:uuid:d0101f7d-e03d-4ed6-b749-02e07ab2daef>","cc-path":"CC-MAIN-2014-15/segments/1397609536300.49/warc/CC-MAIN-... |
Distances or Dimensions Given Scale Measurements
2.7: Distances or Dimensions Given Scale Measurements
Difficulty Level:
Created by: CK-12
Practice Distances or Dimensions Given Scale Measurements
Mr. Jones lives next door to Alex. He designed a plot with the following scale.
1" = 2.5 feet
Mr. Jones drew a plan for his... | {"url":"http://www.ck12.org/book/CK-12-Concept-Middle-School-Math---Grade-6/r1/section/2.7/","timestamp":"2014-04-20T04:38:01Z","content_type":null,"content_length":"132666","record_id":"<urn:uuid:8b78ab36-0511-4ad1-bcb6-f4bc3c06bfde>","cc-path":"CC-MAIN-2014-15/segments/1398223202774.3/warc/CC-MAIN-20140423032002-0050... |
Quintessence of So Subtle
For his art did express
A quintessence even from nothingness,
From dull privations and lean emptiness;
He ruined me, and I am re-begot
Of absence, darkness, death; things which are not.
John Donne, 1633
Descartes (like Aristotle ... | {"url":"http://www.mathpages.com/rr/s3-05/3-05.htm","timestamp":"2014-04-21T09:37:46Z","content_type":null,"content_length":"35298","record_id":"<urn:uuid:91fedc24-2403-4c02-9851-f84da5c51423>","cc-path":"CC-MAIN-2014-15/segments/1398223206147.1/warc/CC-MAIN-20140423032006-00598-ip-10-147-4-33.ec2.internal.warc.gz"} |
Fastest way to cull bounded box in frustrum [Archive] - OpenGL Discussion and Help Forums
01-22-2002, 10:56 PM
I have a very large dataset that I have partitioned with a BSP. Each partition is axis aligned with the graphics coordinate system and its volume is defined in terms of a centroid and two vertices
representin... | {"url":"http://www.opengl.org/discussion_boards/archive/index.php/t-147067.html","timestamp":"2014-04-21T00:00:23Z","content_type":null,"content_length":"15564","record_id":"<urn:uuid:4fb4d427-8545-4cd2-8654-79dfddaf7cab>","cc-path":"CC-MAIN-2014-15/segments/1397609539337.22/warc/CC-MAIN-20140416005219-00358-ip-10-147-... |
Finding a centroid
April 18th 2009, 02:28 AM #1
Finding a centroid
Find the centroid of the rectangular region cut from from the first quadrant by the line $x+y=3$.
What i've tried:
$M= \int_0^3 \int_0^{3-x} dy \ dx = \int_0^3 3-x \ dx = \left[ 3x-\frac{x^2}{2} \right]_0^3=9-\frac{9}{2}=\frac{9}{2}$
$M_... | {"url":"http://mathhelpforum.com/calculus/84257-finding-centroid.html","timestamp":"2014-04-16T05:09:45Z","content_type":null,"content_length":"38664","record_id":"<urn:uuid:377a02ea-eb36-4b46-b358-4b28ee6b5eef>","cc-path":"CC-MAIN-2014-15/segments/1397609521512.15/warc/CC-MAIN-20140416005201-00528-ip-10-147-4-33.ec2.i... |
Physics Department, Princeton University
High Energy Theory Seminar - Rak-Kyeong Seong - Imperial College London - "An evolution of Brane Tilings"
One way in which supersymmetric gauge theories can arise in string theory is as worldvolume theories of probe branes at toric Calabi-Yau singularities. For N=1 4d worldvolum... | {"url":"http://www.princeton.edu/physics/events/viewevent.xml?id=449","timestamp":"2014-04-21T00:19:00Z","content_type":null,"content_length":"10893","record_id":"<urn:uuid:102bb0d2-df2e-4ba4-838c-4c1d5d6204d0>","cc-path":"CC-MAIN-2014-15/segments/1397609539337.22/warc/CC-MAIN-20140416005219-00249-ip-10-147-4-33.ec2.in... |
Cambridge is renowned for the excellence of its Mathematics course. Equally challenging and rewarding, it offers the opportunity to study a wide range of subjects: everything from black holes to
abstruse logic problems.
UCAS code G100 BA/Math
Duration Three or four years
... | {"url":"http://www.study.cam.ac.uk/undergraduate/courses/maths/","timestamp":"2014-04-17T08:25:48Z","content_type":null,"content_length":"58769","record_id":"<urn:uuid:ecc05d9d-a3eb-4c60-8376-31379aa2aa3a>","cc-path":"CC-MAIN-2014-15/segments/1397609526311.33/warc/CC-MAIN-20140416005206-00560-ip-10-147-4-33.ec2.interna... |
sullivan precalculus answers edition 8
26/11/10 10:13
sullivan precalculus answers edition 8
Posted in
* pdf
Topics Study Guidelines for the 8th edition of Sullivan’s Precalculus
Study Guidelines for the 8th edition of Sullivan’s Precalculus … should complete all of these problems, check your answers in the back of the... | {"url":"http://gelepedia.com/books/sullivan-precalculus-answers-edition-8.html","timestamp":"2014-04-18T20:43:19Z","content_type":null,"content_length":"36472","record_id":"<urn:uuid:7b85f0d0-8f0c-4ae1-a75f-1d0e9d7338fc>","cc-path":"CC-MAIN-2014-15/segments/1398223202774.3/warc/CC-MAIN-20140423032002-00367-ip-10-147-4-... |
Derivatives to
Using NFL Derivatives to Profit in an Efficient Market
There are many ways to wager American football including point spreads, moneylines and totals as well as first half betting, betting by the quarter, team totals, alternate point spreads, teasers,
pleasers, and a plethora of propositions. One of the ... | {"url":"http://www.onlinebetting.com/football/nfl-bet-types/derivatives/","timestamp":"2014-04-20T00:37:46Z","content_type":null,"content_length":"12751","record_id":"<urn:uuid:07c75190-b4aa-4fde-8292-8e6a882b246a>","cc-path":"CC-MAIN-2014-15/segments/1397609537804.4/warc/CC-MAIN-20140416005217-00616-ip-10-147-4-33.ec2... |
Stoke's Theorem
April 11th 2010, 06:02 AM #1
Apr 2010
Stoke's Theorem
I've used Stokes's theorem to show that for $\bold{F}(\bold{x})$ a vector field,
$\oint_C d\bold{x} \times \bold{F} = \int_S (d\bold{S} \times abla) \times \bold{F}$
where the curve C bounds the open surface S.
I'm then asked to "... | {"url":"http://mathhelpforum.com/calculus/138468-stoke-s-theorem.html","timestamp":"2014-04-19T04:58:06Z","content_type":null,"content_length":"33543","record_id":"<urn:uuid:819dd7ef-1326-4a65-bbeb-7120c564400d>","cc-path":"CC-MAIN-2014-15/segments/1397609535775.35/warc/CC-MAIN-20140416005215-00033-ip-10-147-4-33.ec2.i... |
Possible pathological properties of positive definite matrix
MathOverflow is a question and answer site for professional mathematicians. It's 100% free, no registration required.
Suppose $A$ is a positive definite matrix such that $$I \preceq A \preceq 1.01I.$$ Is it possible that $$\sum_{i... | {"url":"http://mathoverflow.net/questions/136836/possible-pathological-properties-of-positive-definite-matrix","timestamp":"2014-04-19T12:03:30Z","content_type":null,"content_length":"53791","record_id":"<urn:uuid:73a09d86-48c5-4b97-9abb-4f2c8ec3cc58>","cc-path":"CC-MAIN-2014-15/segments/1398223203422.8/warc/CC-MAIN-20... |
Can someone double check these derivatives?
March 6th 2010, 12:16 PM
Can someone double check these derivatives?
A) y = log2 [(e^(-x))*cos(pi x)]
My solution was -(1+tan(pi x))/ln2
B) arctan(xy) = 1 + (x^2)y
My solution was y(2x+2x^3y^2-1)/x(1-x-x^3y^2)
They are kind of complicated and I just want t... | {"url":"http://mathhelpforum.com/calculus/132340-can-someone-double-check-these-derivatives-print.html","timestamp":"2014-04-19T08:06:03Z","content_type":null,"content_length":"6541","record_id":"<urn:uuid:85f09dc9-b1aa-4d67-a24f-b8fa3721596a>","cc-path":"CC-MAIN-2014-15/segments/1397609536300.49/warc/CC-MAIN-201404160... |
Vertical Motion Model
Re: Vertical Motion Model
Sounds like your doing calculus.
Vertical motion model is just that, you want a mathimatical model of where an object will be, how fast it will be traveling, and how fast it will be accelerating, when it is falling, or possibly
being propelled (although that is quite comp... | {"url":"http://www.mathisfunforum.com/viewtopic.php?pid=26292","timestamp":"2014-04-20T18:33:40Z","content_type":null,"content_length":"11401","record_id":"<urn:uuid:cd088c76-e6ee-4f0b-9285-ce1329d22637>","cc-path":"CC-MAIN-2014-15/segments/1397609539066.13/warc/CC-MAIN-20140416005219-00154-ip-10-147-4-33.ec2.internal.... |
Integration problem, stuck, not sure
July 10th 2011, 10:58 AM #1
Jan 2009
Ontario Canada
Integration problem, stuck, not sure
Covering the topic of Indefinite Integral:
I am doing a question, which my book does not give the answer and hoping someone can look at it and tell me if I did this right.
In... | {"url":"http://mathhelpforum.com/calculus/184380-integration-problem-stuck-not-sure.html","timestamp":"2014-04-17T04:39:43Z","content_type":null,"content_length":"41714","record_id":"<urn:uuid:f4fe6a17-4e41-4506-95ee-6d4268bfa0da>","cc-path":"CC-MAIN-2014-15/segments/1397609537804.4/warc/CC-MAIN-20140416005217-00603-ip... |
What does this particular geometric quotient locally look like?
up vote 1 down vote favorite
Let $k$ be a field and consider the algebraic group $GL_n$ over $Spec(k)$. It has as a closed (but not normal) algebraic subgroup the group $M$ of monomial matrices, i.e. matrices having exactly one
nonzero entry in each row an... | {"url":"http://mathoverflow.net/questions/111751/what-does-this-particular-geometric-quotient-locally-look-like/111759","timestamp":"2014-04-16T13:27:44Z","content_type":null,"content_length":"55710","record_id":"<urn:uuid:8f8c2f21-3709-4ee7-8a2e-d28652a07ea3>","cc-path":"CC-MAIN-2014-15/segments/1397609523429.20/warc/... |
Avondale Estates Statistics Tutor
Find an Avondale Estates Statistics Tutor
...He was accepted to Ohio State for graduate school. I scored in the 99th percentile on the GMAT and taught GMAT prep courses for three years. Much of the GMAT overlaps with the GRE.
28 Subjects: including statistics, calculus, GRE, phys... | {"url":"http://www.purplemath.com/avondale_estates_statistics_tutors.php","timestamp":"2014-04-16T16:07:17Z","content_type":null,"content_length":"24204","record_id":"<urn:uuid:32354fee-0c7e-4b6f-a43a-adccd501bb26>","cc-path":"CC-MAIN-2014-15/segments/1398223202457.0/warc/CC-MAIN-20140423032002-00302-ip-10-147-4-33.ec2... |
60H15 Stochastic partial differential equations [See also 35R60]
In traditional portfolio optimization under the threat of a crash the investment horizon or time to maturity is neglected. Developing the so-called crash hedging strategies (which are portfolio
strategies which make an investor indifferent to the ... | {"url":"https://kluedo.ub.uni-kl.de/solrsearch/index/search/searchtype/collection/id/12105","timestamp":"2014-04-20T21:07:59Z","content_type":null,"content_length":"17987","record_id":"<urn:uuid:a7b591b1-c29b-483c-9d8a-cf3342be4af2>","cc-path":"CC-MAIN-2014-15/segments/1398223206672.15/warc/CC-MAIN-20140423032006-00287... |
CS Concentration in Math: Middle Education
Concentration in Math: Middle Grades Education
Middle Grades Education majors choose two academic concentrations from four choices: Language Arts, Mathematics, Science, and Social Studies. Each concentration consists of 24 hours of course work.
The 24-hour Mathematics Concentr... | {"url":"http://www.ecu.edu/cs-educ/msite/Math/CSConcentrationMathMiddle.cfm","timestamp":"2014-04-18T18:39:57Z","content_type":null,"content_length":"30402","record_id":"<urn:uuid:ec95d26f-8c57-4365-b0d6-8f1e497031a4>","cc-path":"CC-MAIN-2014-15/segments/1397609535095.7/warc/CC-MAIN-20140416005215-00079-ip-10-147-4-33.... |
Math Forum Discussions - Re: Matheology � 222 Back to the roots
Date: Mar 6, 2013 3:54 PM
Author: Virgil
Subject: Re: Matheology � 222 Back to the roots
In article
WM <mueckenh@rz.fh-augsburg.de> wrote:
> On 5 Mrz., 22:27, Virgil <vir...@ligriv.com> wrote:
> > If the list is complete, then never even one line contains... | {"url":"http://mathforum.org/kb/plaintext.jspa?messageID=8543933","timestamp":"2014-04-19T12:25:34Z","content_type":null,"content_length":"2119","record_id":"<urn:uuid:064eba8d-fd9e-49e3-b0cb-e842ab53045b>","cc-path":"CC-MAIN-2014-15/segments/1397609537186.46/warc/CC-MAIN-20140416005217-00243-ip-10-147-4-33.ec2.interna... |
Josephus Problem
Date: 04/18/2003 at 20:39:50
From: Jeremy
Subject: Determining an equation from a series
There are x people sitting around a table. Every other person at the
table is eliminated until there is only one person left. For
instance, at a four-person table, the second and fourth person are
eliminated; then ... | {"url":"http://mathforum.org/library/drmath/view/62704.html","timestamp":"2014-04-20T21:07:09Z","content_type":null,"content_length":"9327","record_id":"<urn:uuid:20c74d11-285f-4448-852c-c566e31c90b5>","cc-path":"CC-MAIN-2014-15/segments/1398223206118.10/warc/CC-MAIN-20140423032006-00200-ip-10-147-4-33.ec2.internal.war... |
How Many Times?
Copyright © University of Cambridge. All rights reserved.
Why do this problem?
This problem
will help consolidate children's understanding of the $24$ hour clock notation. It could also be used to focus on ways of working systematically.
Possible approach
It would be good to have an interactive digital ... | {"url":"http://nrich.maths.org/981/note?nomenu=1","timestamp":"2014-04-18T13:20:19Z","content_type":null,"content_length":"6008","record_id":"<urn:uuid:76d6c47e-b00b-4fef-a181-7dbd0168f536>","cc-path":"CC-MAIN-2014-15/segments/1398223204388.12/warc/CC-MAIN-20140423032004-00089-ip-10-147-4-33.ec2.internal.warc.gz"} |
League Chat Thread
The first way while a lot harder on you is the most like the NBA. Kind of weird since you have a team though. So expect to see complaints when you're signing people but I really don't care. Will
there be RFAs?
I haven't made a final decision on that yet, I've seen it done two ways, and I ... | {"url":"http://www.pelicansreport.com/printthread.php?t=69950&pp=25&page=37","timestamp":"2014-04-20T23:46:12Z","content_type":null,"content_length":"38704","record_id":"<urn:uuid:74f6a359-514c-440a-891a-ff0894d4a9e9>","cc-path":"CC-MAIN-2014-15/segments/1398223207046.13/warc/CC-MAIN-20140423032007-00629-ip-10-147-4-33... |
G-Forces in a Looping Water Slide | Science Blogs | WIRED
• By Rhett Allain
• 04.26.12 |
• 8:28 am |
I can’t help myself. I have to say something about this awesome water slide as seen on io9.
You really should check out the io9 article – an interesting read. But for me, let me see if I can estimate what it would... | {"url":"http://www.wired.com/2012/04/g-forces-in-a-looping-water-slide/","timestamp":"2014-04-16T23:49:45Z","content_type":null,"content_length":"110394","record_id":"<urn:uuid:5b92933d-63da-454b-ad60-44d5e562a18c>","cc-path":"CC-MAIN-2014-15/segments/1398223207046.13/warc/CC-MAIN-20140423032007-00072-ip-10-147-4-33.ec... |
Learning by Simulations: Central Limit Theorem
Share this Page:
The central limit theorem is considered to be one of the most important results in statistical theory. It states that means of an arbitrary finite distribution are always distributed according to a
normal distribution, provided that the number of o... | {"url":"http://www.vias.org/simulations/simusoft_cenlimit.html","timestamp":"2014-04-16T13:10:22Z","content_type":null,"content_length":"7629","record_id":"<urn:uuid:fac5cf50-47c9-4aa5-bb97-29c9dd91838c>","cc-path":"CC-MAIN-2014-15/segments/1398223206147.1/warc/CC-MAIN-20140423032006-00650-ip-10-147-4-33.ec2.internal.w... |
Generating functions, Tutte polynomials, and the bivariate series $\sum_n x^n y^{n^2} / n!$.
up vote 9 down vote favorite
A few years ago I computed the Tutte polynomials of the matroids given by the classical Coxeter groups, and found that their generating functions are all simple variations of the series $\sum_n \fra... | {"url":"http://mathoverflow.net/questions/101191/generating-functions-tutte-polynomials-and-the-bivariate-series-sum-n-xn-y","timestamp":"2014-04-18T18:53:39Z","content_type":null,"content_length":"52743","record_id":"<urn:uuid:bc104742-656f-4ce8-9af3-e48779206434>","cc-path":"CC-MAIN-2014-15/segments/1397609535095.7/w... |
Physics Forums - renormalize some theories
eljose79 Jul30-04 06:24 AM
renormalize some theories
why can we renormalize some theories but others not?..in fact what wo7uld happen if we apply renormalization group method,or Feynmann,s renormalization program to quatnum gravity (non renormalizable
I also found that
they... | {"url":"http://www.physicsforums.com/printthread.php?t=37431","timestamp":"2014-04-19T15:15:44Z","content_type":null,"content_length":"11282","record_id":"<urn:uuid:2fef300e-7130-4b9d-b091-855c1556edaf>","cc-path":"CC-MAIN-2014-15/segments/1397609537271.8/warc/CC-MAIN-20140416005217-00188-ip-10-147-4-33.ec2.internal.wa... |
Lessons In Electric Circuits -- Volume II
Lessons In Electric Circuits -- Volume II
Chapter 11
Consider a circuit for a single-phase AC power system, where a 120 volt, 60 Hz AC voltage source is delivering power to a resistive load: (Figure below)
Ac source drives a purely resistive load.
In this example, the curre... | {"url":"http://www.ibiblio.org/kuphaldt/electricCircuits/AC/AC_11.html","timestamp":"2014-04-18T12:17:36Z","content_type":null,"content_length":"29414","record_id":"<urn:uuid:ebd1dbfa-df32-4a33-a6a3-7cdccb132ba8>","cc-path":"CC-MAIN-2014-15/segments/1397609533308.11/warc/CC-MAIN-20140416005213-00362-ip-10-147-4-33.ec2.... |
Algebra polynomial
June 12th 2007, 04:06 PM #1
Jun 2007
Algebra polynomial
I'm having problems solving this one. Please help
The degree three polynomial f(x) with real coefficients and leading coefficient 1, has 4 and 3 + i among its roots. Express f(x) as a product of linear and quadratic polynomials with ... | {"url":"http://mathhelpforum.com/algebra/15895-algebra-polynomial.html","timestamp":"2014-04-16T06:15:54Z","content_type":null,"content_length":"36107","record_id":"<urn:uuid:7e75629c-5820-4b0b-b4f4-2e31430e82db>","cc-path":"CC-MAIN-2014-15/segments/1397609521512.15/warc/CC-MAIN-20140416005201-00159-ip-10-147-4-33.ec2.... |
Physics Forums - Proof: Permutations and Surjective Functions
schaefera Mar14-12 02:48 PM
Proof: Permutations and Surjective Functions
1. The problem statement, all variables and given/known data
Let X and Y be finite nonempty sets, |X|=m, |Y|=n≤m. Let f(n, m) denote the number of partitions of X into n subsets. Pro... | {"url":"http://www.physicsforums.com/printthread.php?t=586998","timestamp":"2014-04-20T16:04:27Z","content_type":null,"content_length":"6931","record_id":"<urn:uuid:fdae1cae-30a4-4e9c-830c-319eb4d04716>","cc-path":"CC-MAIN-2014-15/segments/1397609538824.34/warc/CC-MAIN-20140416005218-00023-ip-10-147-4-33.ec2.internal.w... |
Having some trouble calculating certain odds.. plz help
in addition to what WurlyQ said above, i'd like to point out something else.
Originally Posted by bonghead365
What Im having trouble with is trying to calculate the chances of 2 specific cards showing. like if i hold 2 3 5 and i need a 4 and then a A or a 6 to com... | {"url":"http://www.cardschat.com/f57/having-some-trouble-calculating-certain-odds-161780/","timestamp":"2014-04-18T00:45:26Z","content_type":null,"content_length":"49091","record_id":"<urn:uuid:823c9290-360c-47c7-9280-4c9fb36372c0>","cc-path":"CC-MAIN-2014-15/segments/1397609532374.24/warc/CC-MAIN-20140416005212-00559-... |
Calhoun, GA ACT Tutor
Find a Calhoun, GA ACT Tutor
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Java in Science: Data Inter- and Extrapolation Using Numerical Methods of Polynomial Fittings, Part 2
Review Part 1
Sums and Scalar Multiples
Two matrices would be equal if they have the same size (that is, the same number of rows and the same number of columns) and also their corresponding entries are equal. Matrix A ... | {"url":"http://www.developer.com/tech/article.php/788311/Java-in-Science-Data-Inter--and-Extrapolation-Using-Numerical-Methods-of-Polynomial-Fittings-Part-2.htm","timestamp":"2014-04-20T18:28:10Z","content_type":null,"content_length":"68867","record_id":"<urn:uuid:7880392d-15f4-48a2-a043-11920ce35830>","cc-path":"CC-MA... |
Resolution: standard / high
Figure 3.
EIS results. (a) and (b) are the Nyquist plots of EIS of symmetrical dummy cells fabricated with different fibrous electrodes; (b) is the amplificatory figure of (a); the inset of (b) shows the
detail of overlapped part in high frequency region of Nyquist plots; (c) shows the Bod... | {"url":"http://www.nanoscalereslett.com/content/7/1/222/figure/F3","timestamp":"2014-04-24T11:21:11Z","content_type":null,"content_length":"12513","record_id":"<urn:uuid:b3be2ee6-262d-490f-afcf-88dee7a45b65>","cc-path":"CC-MAIN-2014-15/segments/1398223206120.9/warc/CC-MAIN-20140423032006-00654-ip-10-147-4-33.ec2.intern... |
Hinsdale, IL Prealgebra Tutor
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Composite Higgs
If the Higgs boson and top quark are not elementary particles, they could be made of smaller particles held together by a force stronger than any others in the Standard Model. This Feynman diagram
represents an example of part of a calculation of the Higgs (and therefore W and Z) mass, which in the Stan... | {"url":"http://www.learner.org/courses/physics/visual/visual.html?shortname=higgs_mass","timestamp":"2014-04-19T19:43:40Z","content_type":null,"content_length":"3219","record_id":"<urn:uuid:aa0a10ef-40e1-4180-974c-f5f56cda644d>","cc-path":"CC-MAIN-2014-15/segments/1398223206647.11/warc/CC-MAIN-20140423032006-00117-ip-1... |
Tangram - 6 pieces
Tangram - 6 pieces
Here is how to make a 6 piece Tangram from the standard matchbox.
First squash the matchbox flat. It should make a square.
Then draw the two diagonals of the square.
Cut out the Triangle ABC.
This should open to give a square.
The two pieces you have made should now open out to lo... | {"url":"http://www.cyffredin.co.uk/Matches%20on%20the%20web/Tangram%206%20piece.htm","timestamp":"2014-04-18T18:22:14Z","content_type":null,"content_length":"15760","record_id":"<urn:uuid:98f423cc-4583-4d9c-a830-1bf2595a8e0b>","cc-path":"CC-MAIN-2014-15/segments/1397609535095.7/warc/CC-MAIN-20140416005215-00381-ip-10-1... |
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Write each rational expression in lowest terms. State all the ... | {"url":"http://openstudy.com/updates/51622aa5e4b0c2e460701c4d","timestamp":"2014-04-17T07:17:00Z","content_type":null,"content_length":"38127","record_id":"<urn:uuid:542040b2-7636-446b-bf58-9768583eb78f>","cc-path":"CC-MAIN-2014-15/segments/1397609526311.33/warc/CC-MAIN-20140416005206-00126-ip-10-147-4-33.ec2.internal.... |
Lattice (order)
See lattice for other meanings of the term, both within and without mathematics.
, a
is a
partially ordered set
in which all nonempty
finite subsets
have both a
) and an
). On the other hand, lattices can also be characterized as
algebraic structures
that satisfy certain
. Since both views can be us... | {"url":"http://july.fixedreference.org/en/20040724/wikipedia/Lattice_(order)","timestamp":"2014-04-19T05:01:42Z","content_type":null,"content_length":"28377","record_id":"<urn:uuid:acbabbb3-85ca-471c-bf2c-a84b6ae01a61>","cc-path":"CC-MAIN-2014-15/segments/1397609535775.35/warc/CC-MAIN-20140416005215-00111-ip-10-147-4-3... |
Mathematician proves there are infinitely many pairs of prime numbers less than 70 million units apart
May 15th, 2013 in Other Sciences / Mathematics
Prime Numbers
Prime Numbers
(Phys.org) —Mathematician Yitang Zhang of the University of New Hampshire, appears to have taken a major step in solving the twin prime conjec... | {"url":"http://phys.org/print287828042.html","timestamp":"2014-04-17T14:04:05Z","content_type":null,"content_length":"7237","record_id":"<urn:uuid:b9eef1c3-a20f-4985-870d-43d3c6adaa49>","cc-path":"CC-MAIN-2014-15/segments/1397609530131.27/warc/CC-MAIN-20140416005210-00079-ip-10-147-4-33.ec2.internal.warc.gz"} |
FairVote - Algorithm
This page describes the variables used in the model, the algorithm used for four different types of races, and how we measure the accuracy of a projected party and winning percentage. This
information is common to the methods used for 1996-2000 as well as for 2002.
For the 2002 projections, however... | {"url":"http://archive.fairvote.org/global/?page=492","timestamp":"2014-04-19T02:31:32Z","content_type":null,"content_length":"15409","record_id":"<urn:uuid:48ff00ee-0a98-428a-bce2-722a067997d4>","cc-path":"CC-MAIN-2014-15/segments/1397609535745.0/warc/CC-MAIN-20140416005215-00216-ip-10-147-4-33.ec2.internal.warc.gz"} |
Elmwood Park, NJ SAT Math Tutor
Find an Elmwood Park, NJ SAT Math Tutor
...I have degrees in Biology and Mathematics and am comfortable teaching any and all of the subjects in both science and math. I have personally tutored everything from Algebra to Advanced
Calculus and English to AP Biology and everything in be... | {"url":"http://www.purplemath.com/Elmwood_Park_NJ_SAT_Math_tutors.php","timestamp":"2014-04-19T09:45:03Z","content_type":null,"content_length":"24279","record_id":"<urn:uuid:edc42391-3379-4d6d-985c-9122aa61f0bb>","cc-path":"CC-MAIN-2014-15/segments/1398223211700.16/warc/CC-MAIN-20140423032011-00459-ip-10-147-4-33.ec2.i... |
Confidence Interval Comparison Calculator
Features & Benefits
• Computes the Adjusted-Wald, Wald, Exact and Score confidence intervals
• Easily integrate the formulas into your spreadsheets
• Specify any confidence level (e.g. 95%, 99%, 98%)
• Supports both 1 and 2 Tailed Confidence Intervals
• Provides both ... | {"url":"http://www.measuringusability.com/products/ciComparison","timestamp":"2014-04-20T15:51:11Z","content_type":null,"content_length":"19357","record_id":"<urn:uuid:02a5597d-4326-44c2-948f-dcfee998d634>","cc-path":"CC-MAIN-2014-15/segments/1397609538824.34/warc/CC-MAIN-20140416005218-00247-ip-10-147-4-33.ec2.interna... |
We often think of math as being rather dry. Memorizing formulas. Calculating things. A race to a single right answer.
But math can also be creative and inspiring — about discovering deeper patterns. Revealing hidden connections. Math as fun.
The Julia Robinson Mathematics Festival — a single-day event for middle- and h... | {"url":"http://wordplay.blogs.nytimes.com/tag/berkeley-calif/","timestamp":"2014-04-17T07:11:05Z","content_type":null,"content_length":"30755","record_id":"<urn:uuid:d6c40128-94f1-45cc-954a-b464d2904d4d>","cc-path":"CC-MAIN-2014-15/segments/1397609526311.33/warc/CC-MAIN-20140416005206-00504-ip-10-147-4-33.ec2.internal.... |
What is the between estimator?
Title Between estimators
Author William Gould, StataCorp
Date March 2001
I understand the basic differences between a fixed-effects and a random-effects model for a panel dataset, but what is the “between estimator”? The manual explains the command, but I cannot
figure out w... | {"url":"http://www.stata.com/support/faqs/statistics/between-estimator/","timestamp":"2014-04-20T18:33:14Z","content_type":null,"content_length":"32669","record_id":"<urn:uuid:08a76e62-bb86-4802-8025-ee2575e1517a>","cc-path":"CC-MAIN-2014-15/segments/1397609539066.13/warc/CC-MAIN-20140416005219-00037-ip-10-147-4-33.ec2... |
Effects of surface tension
March 5th 2008, 02:25 AM
Effects of surface tension
What I have understood about surface tension is that it lays a pressure on the surface in proportion to the bending of it, the angular change per meter surface , which has the unit $[rad/m^{-1}]=
[m^{-1}]$. And pressure has the unit ... | {"url":"http://mathhelpforum.com/advanced-applied-math/30035-effects-surface-tension-print.html","timestamp":"2014-04-16T14:47:34Z","content_type":null,"content_length":"10611","record_id":"<urn:uuid:57633178-7676-4a2b-9028-92925ddd7d31>","cc-path":"CC-MAIN-2014-15/segments/1397609523429.20/warc/CC-MAIN-20140416005203-... |
Theory Small_Step
header "Small-Step Semantics of Commands"
theory Small_Step imports Star Big_Step begin
subsection "The transition relation"
text_raw{*\snip{SmallStepDef}{0}{2}{% *}
small_step :: "com * state => com * state => bool" (infix "->" 55)
Assign: "(x ::= a, s) -> (SKIP, s(x := aval a s))" |
Seq1: "(SK... | {"url":"http://www.cl.cam.ac.uk/research/hvg/Isabelle/dist/library/HOL/HOL-IMP/Small_Step.html","timestamp":"2014-04-17T12:34:41Z","content_type":null,"content_length":"21689","record_id":"<urn:uuid:f0a5a249-b050-4807-8102-49c65ce4d3c1>","cc-path":"CC-MAIN-2014-15/segments/1397609532573.41/warc/CC-MAIN-20140416005212-0... |
POOMA Tutorial 2
Red/Black Update
Red-Black Update
Passing Arrays to Functions
Calling the Function
A Note on Expressions
Using Two-Dimensional Ranges
Periodic Boundary Conditions
Operations and Their Results
This tutorial shows ... | {"url":"http://www.nongnu.org/freepooma/tutorial/tut-02.html","timestamp":"2014-04-17T03:51:27Z","content_type":null,"content_length":"36718","record_id":"<urn:uuid:475d9543-3204-4749-b4e0-42116b800ba3>","cc-path":"CC-MAIN-2014-15/segments/1398223207046.13/warc/CC-MAIN-20140423032007-00011-ip-10-147-4-33.ec2.internal.w... |
Separation of Variables
January 5th 2011, 01:41 PM #1
MHF Contributor
Mar 2010
Separation of Variables
$\displaystyle\frac{\varphi'(x)}{\varphi(x)}=\frac{ xyz\psi(y)\omega(z)}{\psi'(y)\omega'(z)}$
$\varphi'(x)-\lambda\varphi(x)=0\Rightarrow m=\lambda$
$\displaystyle\frac{\psi'(y)}{\psi(y)}=\frac{xyz\om ... | {"url":"http://mathhelpforum.com/differential-equations/167547-separation-variables.html","timestamp":"2014-04-19T07:18:03Z","content_type":null,"content_length":"60634","record_id":"<urn:uuid:b2815caf-ac1d-4899-9f70-9d6f26b84f32>","cc-path":"CC-MAIN-2014-15/segments/1397609536300.49/warc/CC-MAIN-20140416005216-00295-i... |
Independent Prob Proof
February 3rd 2011, 04:49 PM #1
MHF Contributor
Mar 2010
Independent Prob Proof
If A and B are independent events each with positive probability, prove that they cannot be mutually exclusive.
Not to sure about this one but this is what I have:
$\displaystyle P(A\cap B)=P(A)P(B)\Rig... | {"url":"http://mathhelpforum.com/advanced-statistics/170148-independent-prob-proof.html","timestamp":"2014-04-17T23:15:50Z","content_type":null,"content_length":"38323","record_id":"<urn:uuid:6d265766-62f1-42d3-924a-d242af9e5ae1>","cc-path":"CC-MAIN-2014-15/segments/1397609535745.0/warc/CC-MAIN-20140416005215-00270-ip-... |
[SciPy-User] Request for usage examples on scipy.stats.rv_continuous and scipy.ndimage.grey_dilate(structure)
[SciPy-User] Request for usage examples on scipy.stats.rv_continuous and scipy.ndimage.grey_dilate(structure)
Robert Kern robert.kern@gmail....
Mon Mar 22 09:50:23 CDT 2010
On Mon, Mar 22, 2010 at 09:44, Christ... | {"url":"http://mail.scipy.org/pipermail/scipy-user/2010-March/024777.html","timestamp":"2014-04-17T01:54:38Z","content_type":null,"content_length":"4816","record_id":"<urn:uuid:00de1409-6999-45cd-96ea-0f0edb27deb7>","cc-path":"CC-MAIN-2014-15/segments/1397609526102.3/warc/CC-MAIN-20140416005206-00352-ip-10-147-4-33.ec2... |
Work to Compress Spring
1. The problem statement, all variables and given/known data
A spring, with a spring constant of 87 N/m, was compressed a distance of 8.6cm (0.086m). How much work was done in order to compress the spring?
2. Relevant equations
3. The attempt at a solution
I tried to plug in the numbers as follo... | {"url":"http://www.physicsforums.com/showthread.php?t=435695","timestamp":"2014-04-21T09:54:48Z","content_type":null,"content_length":"28623","record_id":"<urn:uuid:1df4a6e1-f162-4869-a367-d8394c6473d6>","cc-path":"CC-MAIN-2014-15/segments/1397609539705.42/warc/CC-MAIN-20140416005219-00504-ip-10-147-4-33.ec2.internal.w... |
Are there complexity classes with provably no complete problems?
up vote 15 down vote favorite
A problem is said to be complete for a complexity class $\mathcal{C}$ if a) it is in $\mathcal{C}$ and b) every problem in $\mathcal{C}$ is log-space reducible to it. There are natural examples of
NP-complete problems (SAT), ... | {"url":"http://mathoverflow.net/questions/27572/are-there-complexity-classes-with-provably-no-complete-problems/28086","timestamp":"2014-04-16T22:02:23Z","content_type":null,"content_length":"86241","record_id":"<urn:uuid:ef350d60-645b-4ce9-a9ad-2093387e4154>","cc-path":"CC-MAIN-2014-15/segments/1397609525991.2/warc/CC... |
Redondo Beach Math Tutor
Find a Redondo Beach Math Tutor
...I graduated from CSUN with a BA in mathematics in 2009. My passion and enthusiasm for math is reflected in my teaching, and I try to make each session interesting and fun! I have experience
working as a private math tutor and at an established math tutorin... | {"url":"http://www.purplemath.com/Redondo_Beach_Math_tutors.php","timestamp":"2014-04-18T15:42:44Z","content_type":null,"content_length":"23927","record_id":"<urn:uuid:2fac8842-9451-402e-a3f6-8e5bac6b3517>","cc-path":"CC-MAIN-2014-15/segments/1398223211700.16/warc/CC-MAIN-20140423032011-00630-ip-10-147-4-33.ec2.interna... |
North Plainfield, NJ ACT Tutor
Find a North Plainfield, NJ ACT Tutor
...Use Jamie if you want an excellent tutor. I love tutoring! Working with a student and creating a customized learning curriculum makes every new student a challenge and opportunity.
16 Subjects: including ACT Math, geometry, algebra 1, GED
.... | {"url":"http://www.purplemath.com/North_Plainfield_NJ_ACT_tutors.php","timestamp":"2014-04-20T01:56:48Z","content_type":null,"content_length":"24116","record_id":"<urn:uuid:67d9cef8-9e52-4514-8b45-f049df7aedab>","cc-path":"CC-MAIN-2014-15/segments/1397609537804.4/warc/CC-MAIN-20140416005217-00442-ip-10-147-4-33.ec2.int... |
General decay for a system of nonlinear viscoelastic wave equations with weak damping
In this paper, we are concerned with a system of nonlinear viscoelastic wave equations with initial and Dirichlet boundary conditions in ( ). Under suitable assumptions, we establish a general decay
result by multiplier techniques, w... | {"url":"http://www.boundaryvalueproblems.com/content/2012/1/146/","timestamp":"2014-04-20T08:20:26Z","content_type":null,"content_length":"176370","record_id":"<urn:uuid:2b8a6dc1-e61c-448a-826e-bb3dae38ab38>","cc-path":"CC-MAIN-2014-15/segments/1398223211700.16/warc/CC-MAIN-20140423032011-00363-ip-10-147-4-33.ec2.inter... |
Maximum Grilled Steelers Forum
We're down to the last five weeks of the regular season, and the Steelers find themselves in a hell of a pickle. A mediocre overall record and a poor divisional record demands a strong finish.
CBS Sportsline
has the current playoff standings, and
Football Outsiders
has a weekly update of ... | {"url":"http://maximumgrilledsteelers.com/index.php?topic=18200.msg10616590","timestamp":"2014-04-19T03:03:07Z","content_type":null,"content_length":"67981","record_id":"<urn:uuid:696a67f8-4351-460d-9096-38f83dc157f5>","cc-path":"CC-MAIN-2014-15/segments/1397609535745.0/warc/CC-MAIN-20140416005215-00162-ip-10-147-4-33.... |
Cipher modes operate on the next level up from the underlying block cipher. They transform the blocks going in and out of the cipher in ways to give them desirable properties in certain
circumstances. The cipher modes implemented by GNU Crypto, which is contained in the gnu.crypto.mode package and are referenced herein... | {"url":"http://www.gnu.org/software/gnu-crypto/manual/Modes.html","timestamp":"2014-04-19T03:12:09Z","content_type":null,"content_length":"4406","record_id":"<urn:uuid:ea3070f4-efb8-4013-9b6f-ad40ed779fd6>","cc-path":"CC-MAIN-2014-15/segments/1398223203841.5/warc/CC-MAIN-20140423032003-00624-ip-10-147-4-33.ec2.internal... |
Mplus Discussion >> Fixed effects models
Arena posted on Thursday, August 16, 2012 - 9:33 pm
I'm currently analyzing data to examine how classroom characteristics relate to students' standardized test scores. Because students are nested within classrooms, I used CLUSTER to adjust the
standard errors within each classro... | {"url":"http://www.statmodel.com/discussion/messages/12/10284.html?1364745791","timestamp":"2014-04-18T08:05:08Z","content_type":null,"content_length":"26060","record_id":"<urn:uuid:44be1534-55ae-48f1-9adf-f181872ca560>","cc-path":"CC-MAIN-2014-15/segments/1397609533121.28/warc/CC-MAIN-20140416005213-00617-ip-10-147-4-... |
□ org.apache.commons.math3.stat.inference.BinomialTest
□ Method Summary
Modifier and Type Method and Description
double binomialTest(int numberOfTrials, int numberOfSuccesses, double probability, AlternativeHypothesis alternativeHy... | {"url":"http://commons.apache.org/proper/commons-math/apidocs/org/apache/commons/math3/stat/inference/BinomialTest.html","timestamp":"2014-04-18T16:04:08Z","content_type":null,"content_length":"19988","record_id":"<urn:uuid:fae80d7d-e60b-42f0-bbc0-79491a618784>","cc-path":"CC-MAIN-2014-15/segments/1398223211700.16/warc... |
Bijection between tangent spaces
December 12th 2010, 08:44 AM #1
Oct 2010
Bijection between tangent spaces
We have defined the tangent space at a point p of a manifold as the set of all derivatives.
Now i want to show, that there exist a bijection between all derivatives and the "Tangentvectors" defined by ... | {"url":"http://mathhelpforum.com/differential-geometry/166018-bijection-between-tangent-spaces.html","timestamp":"2014-04-19T01:03:28Z","content_type":null,"content_length":"43883","record_id":"<urn:uuid:81c4e2f4-cee4-486a-8ff8-d363e2214401>","cc-path":"CC-MAIN-2014-15/segments/1398223202548.14/warc/CC-MAIN-20140423032... |
Wolfram Demonstrations Project
Golden Spiral
This Demonstration draws an approximation to a golden spiral using a golden rectangle.
By successively drawing an arc between vertices of each square in a golden rectangle, you can approximate a golden spiral.
A golden spiral is a logarithmic spiral that goes through success... | {"url":"http://demonstrations.wolfram.com/GoldenSpiral/","timestamp":"2014-04-19T12:04:19Z","content_type":null,"content_length":"44406","record_id":"<urn:uuid:8f897d2f-af59-4156-8d76-76740bd0ea1f>","cc-path":"CC-MAIN-2014-15/segments/1397609537186.46/warc/CC-MAIN-20140416005217-00244-ip-10-147-4-33.ec2.internal.warc.g... |
Clifford Hwang
Associate Faculty, Mathematics
Clifford Hwang has been teaching mathematics at Mission College since 1999. He also teaches part-time at Evergreen Valley College and Santa Clara University.
Ph.D., Electrical Engineering, University of California, Los Angeles
M.S., Electrical Engineering, University of Ca... | {"url":"http://www.missioncollege.org/-profiles/hwang_clifford.html","timestamp":"2014-04-20T20:56:35Z","content_type":null,"content_length":"11250","record_id":"<urn:uuid:39e98d39-d445-4039-a66a-46f0720cd7be>","cc-path":"CC-MAIN-2014-15/segments/1397609539230.18/warc/CC-MAIN-20140416005219-00358-ip-10-147-4-33.ec2.int... |
188 helpers are online right now
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CS 223
CS 223 -- Random Processes and Algorithms
Preliminary Syllabus
Instructor: Michael Mitzenmacher
E-mail: michaelm@eecs.harvard.edu
Office: Maxwell... | {"url":"http://www.eecs.harvard.edu/~michaelm/CS223/syllabus.html","timestamp":"2014-04-19T01:48:00Z","content_type":null,"content_length":"5045","record_id":"<urn:uuid:f0e43d49-b250-4dab-900d-022ba59de6b8>","cc-path":"CC-MAIN-2014-15/segments/1398223204388.12/warc/CC-MAIN-20140423032004-00014-ip-10-147-4-33.ec2.intern... |
maths - geometry
Number of results: 28,169
please help im maths sums of geometry
Wednesday, August 22, 2007 at 7:18pm by neha
Geometry : It is derived from an Arabic word genest which means figures. Thus geometry means problems based on figures.
Saturday, May 10, 2008 at 3:09am by PULKIT
Applied Geometry maths
A Maths ... | {"url":"http://www.jiskha.com/search/index.cgi?query=maths+-+geometry","timestamp":"2014-04-17T16:42:53Z","content_type":null,"content_length":"33650","record_id":"<urn:uuid:9bb32dbe-08e3-4269-b5f9-6408b09586c1>","cc-path":"CC-MAIN-2014-15/segments/1398223206120.9/warc/CC-MAIN-20140423032006-00590-ip-10-147-4-33.ec2.in... |
The waitress and the hostess at a restaurant share the tips at the end of the shift. The average amount earned in tips between the two of them is $75. The waitress gets $45 and the hostess gets $30.
If they continue to earn money at this rate, how many dollars will the waitress receive if they earn $350 at the end of ... | {"url":"http://www.weegy.com/?ConversationId=84117AB8","timestamp":"2014-04-16T04:25:34Z","content_type":null,"content_length":"41975","record_id":"<urn:uuid:9c735f68-309b-4656-baa7-38701f1021de>","cc-path":"CC-MAIN-2014-15/segments/1398223203235.2/warc/CC-MAIN-20140423032003-00103-ip-10-147-4-33.ec2.internal.warc.gz"} |
Pavel Materna: "Sense, Denotation, Reference : A terminological/philosophical
Summary: The terms sense, meaning, denotation, reference are mostly used without any critical attempt at defining them. So it frequently happens that reference is used promiscue with denotation. The
paper shows that at least the approach know... | {"url":"http://www.phil.muni.cz/~materna/sense.html","timestamp":"2014-04-21T12:26:46Z","content_type":null,"content_length":"44909","record_id":"<urn:uuid:af598115-7455-4389-843b-2adabc482274>","cc-path":"CC-MAIN-2014-15/segments/1397609539776.45/warc/CC-MAIN-20140416005219-00408-ip-10-147-4-33.ec2.internal.warc.gz"} |
Marlton Math Tutor
Find a Marlton Math Tutor
...Whatever the difficulty the student is having, I can help! I am especially effective in the following grades and subjects:Reading - Kindergarten - Adult; Math - Kindergarten - 8th grade
(including Pre-Algebra and Algebra I); Science - Kindergarten - 8th grade; Social ... | {"url":"http://www.purplemath.com/Marlton_Math_tutors.php","timestamp":"2014-04-16T13:41:24Z","content_type":null,"content_length":"23825","record_id":"<urn:uuid:ca5bcb45-430b-4676-b2eb-6e439d728e31>","cc-path":"CC-MAIN-2014-15/segments/1397609523429.20/warc/CC-MAIN-20140416005203-00388-ip-10-147-4-33.ec2.internal.warc... |
Wolfram Demonstrations Project
Boltzmann Gas
At the macroscopic level, the temperature of a substance is a parameter—measured by a thermometer—that indicates how hot or cold the substance is. At the microscopic level, the temperature—according
to Ludwig Boltzmann—is a measure of the kinetic energy associated with the d... | {"url":"http://demonstrations.wolfram.com/BoltzmannGas/","timestamp":"2014-04-19T22:38:15Z","content_type":null,"content_length":"47304","record_id":"<urn:uuid:944b24b0-0762-4a8e-a02c-22c93bc92818>","cc-path":"CC-MAIN-2014-15/segments/1397609537754.12/warc/CC-MAIN-20140416005217-00574-ip-10-147-4-33.ec2.internal.warc.g... |
All about map scale
A most important property of every map is its scale. Understanding map scales will help you decide what kind of map is best for your purposes and to evaluate alternatives.
Scale is the ratio between the length of a feature on the map and the actual length of the same feature on earth. As you shop Th... | {"url":"https://www.mapcenter.com/index.php?section=map_scale","timestamp":"2014-04-20T08:15:34Z","content_type":null,"content_length":"13549","record_id":"<urn:uuid:5a25a49e-7316-4983-aafa-3252e44c65b5>","cc-path":"CC-MAIN-2014-15/segments/1397609538110.1/warc/CC-MAIN-20140416005218-00578-ip-10-147-4-33.ec2.internal.w... |
Cosmic rays - minimum ionizing particles ?
Vanadium 50
A proton of that high energy is nowhere near minimum ionizing. Also, it's losing a significant fraction of its energy through other processes, so ionization energy loss is only a tiny piece of the
If an individual proton (a cosmic ray secondary) enters a 100-micr... | {"url":"http://www.physicsforums.com/showthread.php?t=381401","timestamp":"2014-04-20T21:20:47Z","content_type":null,"content_length":"34180","record_id":"<urn:uuid:37b6db74-6304-455e-9513-17410dd2bca7>","cc-path":"CC-MAIN-2014-15/segments/1397609539230.18/warc/CC-MAIN-20140416005219-00005-ip-10-147-4-33.ec2.internal.w... |
G01AHF Lineprinter scatterplot of one variable against Normal scores
G01DAF Normal scores, accurate values
G01DBF Normal scores, approximate values
G01DCF Normal scores, approximate variance-covariance matrix
G01DHF Ranks, Normal scores, approximate Normal scores or exponential (Savage) scores
G01DHF Ranks, Normal scor... | {"url":"http://www.nag.co.uk/numeric/fl/manual20/html/indexes/kwic/normal.html","timestamp":"2014-04-17T09:38:09Z","content_type":null,"content_length":"9091","record_id":"<urn:uuid:f1b604eb-a345-47b5-8c16-794e417c14e1>","cc-path":"CC-MAIN-2014-15/segments/1398223201753.19/warc/CC-MAIN-20140423032001-00631-ip-10-147-4-... |
Household structure and infectious disease transmission
One of the central tenets of modern infectious disease epidemiology is that an understanding of heterogeneities, both in host demography and transmission, allows control to be efficiently optimized.
Due to the strong interactions present, households are one of the... | {"url":"http://pubmedcentralcanada.ca/pmcc/articles/PMC2829934/?lang=en-ca","timestamp":"2014-04-23T12:17:49Z","content_type":null,"content_length":"81514","record_id":"<urn:uuid:a4169f5c-aa35-4ef3-a4db-3dbd06726ad6>","cc-path":"CC-MAIN-2014-15/segments/1398223202548.14/warc/CC-MAIN-20140423032002-00344-ip-10-147-4-33.... |
A Short Return to the Age-Earnings Profile
March 8, 2011
By Adam.Hyland
Two posts ago I mentioned the age-earnings profile but did not provide a regression of log earnings on wage. I also offered, without evidence, that fitting a simple linear regression would be
inappropriate. How do I know that? How could we determin... | {"url":"http://www.r-bloggers.com/a-short-return-to-the-age-earnings-profile/","timestamp":"2014-04-20T13:24:58Z","content_type":null,"content_length":"39327","record_id":"<urn:uuid:77a2f33f-8d34-4f57-8636-10716ce3a18c>","cc-path":"CC-MAIN-2014-15/segments/1398223206672.15/warc/CC-MAIN-20140423032006-00622-ip-10-147-4-... |
Complex subvarieties of hermitian symmetric spaces
up vote 4 down vote favorite
Assume that M=G/K is a non-compact Hermitian symmetric space, for G the real points of a semisimple (or even simple) algerbaic group and K a maximal compact subgroup. M admits the structure of a
complex manifold. Now, if X is a complex subv... | {"url":"http://mathoverflow.net/questions/32512/complex-subvarieties-of-hermitian-symmetric-spaces","timestamp":"2014-04-18T23:29:46Z","content_type":null,"content_length":"53128","record_id":"<urn:uuid:312cc4e5-2ce9-4c38-8a23-3e222b47cdb6>","cc-path":"CC-MAIN-2014-15/segments/1397609535535.6/warc/CC-MAIN-2014041600521... |
family of functions- verticle asymptotes
November 20th 2007, 11:11 AM
family of functions- verticle asymptotes
im stuck on a question!
a family of functions is given by:
a) for what vales of a and b does the graph of r have a verticle asymptote? where are the verticle asymptotes in this case?
b) find va... | {"url":"http://mathhelpforum.com/calculus/23202-family-functions-verticle-asymptotes-print.html","timestamp":"2014-04-19T15:10:09Z","content_type":null,"content_length":"8344","record_id":"<urn:uuid:dda3fc6b-5419-4971-b4d7-9ac7c320a9e3>","cc-path":"CC-MAIN-2014-15/segments/1397609537271.8/warc/CC-MAIN-20140416005217-00... |
Pi with Machin's formula (Haskell)
From LiteratePrograms
Other implementations: Erlang | Haskell | Java | Lisp | Python
[edit] Machin's formula
A simple way to compute the mathematical constant π ≈ 3.14159 with any desired precision is due to John Machin. In 1706, he found the formula
$\frac{\pi}{4} = 4 \, \arc... | {"url":"http://en.literateprograms.org/Pi_with_Machin's_formula_(Haskell)","timestamp":"2014-04-20T05:42:16Z","content_type":null,"content_length":"25956","record_id":"<urn:uuid:9edcd581-aca3-42fe-b767-6f31aa51ea9c>","cc-path":"CC-MAIN-2014-15/segments/1397609538022.19/warc/CC-MAIN-20140416005218-00170-ip-10-147-4-33.e... |
Another calculus problems.
December 15th 2010, 04:21 PM
Another calculus problems.
1. Find the limit, if it exists, if it does not exist, explain why
lim n to infinity (n!)^(1/n)
Recall the n factorial is defined to be the product of all the integers between 1 and
n inclusive.
2. You are driving thr... | {"url":"http://mathhelpforum.com/calculus/166352-another-calculus-problems-print.html","timestamp":"2014-04-20T17:20:51Z","content_type":null,"content_length":"5087","record_id":"<urn:uuid:13986517-b145-4e18-be16-ff54ca4ae9f5>","cc-path":"CC-MAIN-2014-15/segments/1397609538824.34/warc/CC-MAIN-20140416005218-00298-ip-10... |
Hoboken, NJ Algebra Tutor
Find a Hoboken, NJ Algebra Tutor
...I am extremely patient and look forward to helping students achieve their academic goals. I have a high math aptitude and scored above 700 on the math portion of the SAT in high school. After
working for the last twenty years in the financial services in... | {"url":"http://www.purplemath.com/hoboken_nj_algebra_tutors.php","timestamp":"2014-04-17T04:16:15Z","content_type":null,"content_length":"23740","record_id":"<urn:uuid:041173c7-3061-42c4-a132-b792a96a492f>","cc-path":"CC-MAIN-2014-15/segments/1397609526252.40/warc/CC-MAIN-20140416005206-00562-ip-10-147-4-33.ec2.interna... |
Antonio Gulli's coding playground
Random commentary about C++, STL, Boost, Perl, Python, Algorithms, Problem Solving and Web Search
Tuesday, October 16, 2012
Given a matrix nxn
Zero all the columns and rows which contains at least one zero.
Pubblicato da codingplayground a 12:17 PM
1 comment:
1. for(int c=0; c < N;... | {"url":"http://codingplayground.blogspot.com/2012/10/given-matrix-nxn.html","timestamp":"2014-04-17T06:42:24Z","content_type":null,"content_length":"136048","record_id":"<urn:uuid:0faf8171-7261-4a8c-a82d-154feed54354>","cc-path":"CC-MAIN-2014-15/segments/1397609526311.33/warc/CC-MAIN-20140416005206-00073-ip-10-147-4-33... |
Arbitrary decays for a viscoelastic equation
In this paper, we consider the nonlinear viscoelastic equation , in a bounded domain with initial conditions and Dirichlet boundary conditions. We prove an arbitrary decay result for a class of
kernel function g without setting the function g itself to be of exponential (po... | {"url":"http://www.boundaryvalueproblems.com/content/2011/1/28","timestamp":"2014-04-18T15:42:24Z","content_type":null,"content_length":"151761","record_id":"<urn:uuid:751b66e8-1829-452c-bec4-2ab08a39c48b>","cc-path":"CC-MAIN-2014-15/segments/1398223203841.5/warc/CC-MAIN-20140423032003-00454-ip-10-147-4-33.ec2.internal... |
The topic Optics is discussed in the following articles:
discussed in biography
• TITLE: Euclid (Greek mathematician)SECTION:
Other writings
Among Euclid’s extant works are the Optics, the first Greek treatise on perspective, and the Phaenomena, an introduction to mathematical astronomy. Those works are part ... | {"url":"http://www.britannica.com/print/topic/430551","timestamp":"2014-04-18T13:27:48Z","content_type":null,"content_length":"7358","record_id":"<urn:uuid:355e6756-1c9d-46d3-ae30-920b10fc8c20>","cc-path":"CC-MAIN-2014-15/segments/1397609533689.29/warc/CC-MAIN-20140416005213-00349-ip-10-147-4-33.ec2.internal.warc.gz"} |
Partial Fraction Integration - Set up problems?
1. The problem statement, all variables and given/known data
[tex]\int[/tex][tex]\frac{2x^{2}}{(x^{2}-1)}[/tex] dx
2. Relevant equations
Partial Fractions
3. The attempt at a solution
2[tex]\int[/tex][tex]\frac{x^{2}}{(x^{2}-1)}[/tex] dx
2[tex]\int[/tex][tex]\frac{x^{2}}{... | {"url":"http://www.physicsforums.com/showthread.php?t=258507","timestamp":"2014-04-17T03:53:03Z","content_type":null,"content_length":"27545","record_id":"<urn:uuid:3467915e-fcb6-4151-a67a-651f5c499979>","cc-path":"CC-MAIN-2014-15/segments/1398223202548.14/warc/CC-MAIN-20140423032002-00531-ip-10-147-4-33.ec2.internal.w... |
[SOLVED] solving linear equations in one variable????
July 23rd 2009, 06:25 AM #1
Jul 2009
New York
[SOLVED] solving linear equations in one variable????
here are the problems i need help with. can u tell me the steps to solve these problems?? thank you!
first problem: a(x+b)=c
second problem: 9x+2a... | {"url":"http://mathhelpforum.com/algebra/95885-solved-solving-linear-equations-one-variable.html","timestamp":"2014-04-17T07:22:07Z","content_type":null,"content_length":"52183","record_id":"<urn:uuid:58e5e70e-a4c9-43a3-9668-7825660c314d>","cc-path":"CC-MAIN-2014-15/segments/1397609526311.33/warc/CC-MAIN-20140416005206... |
Ideals in the recursively enumerable degrees
"... The set A is low for Martin-Lof random if each random set is already random relative to A. A is K-trivial if the prefix complexity K of each initial segment of A is minimal, namely K(n)+O(1). We
show that these classes coincide. This implies answers to questions of Ambo... | {"url":"http://citeseerx.ist.psu.edu/showciting?cid=1562474","timestamp":"2014-04-17T01:39:03Z","content_type":null,"content_length":"13925","record_id":"<urn:uuid:d6f06221-61f7-4544-920d-f3ddc05a0134>","cc-path":"CC-MAIN-2014-15/segments/1397609526102.3/warc/CC-MAIN-20140416005206-00346-ip-10-147-4-33.ec2.internal.war... |
Ejection Charge Sizing
Derivation of Table for Estimated Ejection Charge Size
First we assume the entire mass of the ejection charge is burned and converted to a gas. Next from basic chemistry we use the ideal gas law equation:
... | {"url":"http://www.vernk.com/EjectionChargeSizing.htm","timestamp":"2014-04-16T04:10:55Z","content_type":null,"content_length":"62337","record_id":"<urn:uuid:7126168e-5e76-4dee-891d-1b17508c5d09>","cc-path":"CC-MAIN-2014-15/segments/1397609521512.15/warc/CC-MAIN-20140416005201-00120-ip-10-147-4-33.ec2.internal.warc.gz"... |
[undergrad further calculus] Partial differentiation - stationary points (self.learnmath)
submitted ago by Waving_from_heights
sorry, this has been archived and can no longer be voted on
Just having trouble understanding two small segments of a past papers work-through. If you could explain how to attain the values of ... | {"url":"http://www.reddit.com/r/learnmath/comments/140htq/undergrad_further_calculus_partial/","timestamp":"2014-04-21T02:28:45Z","content_type":null,"content_length":"63644","record_id":"<urn:uuid:5875fa9b-319f-4e10-b6a1-5addade258c5>","cc-path":"CC-MAIN-2014-15/segments/1398223203422.8/warc/CC-MAIN-20140423032003-003... |
The Optimal Degree of Discretion in Monetary Policy
The Optimal Degree of Discretion in Monetary Policy
International Finance Discussion Papers numbers 797-807 were presented on November 14-15, 2003 at the second conference sponsored by the International Research Forum on Monetary Policy sponsored by
the European Cen... | {"url":"http://www.federalreserve.gov/pubs/ifdp/2004/801/ifdp801.htm","timestamp":"2014-04-16T22:33:03Z","content_type":null,"content_length":"335450","record_id":"<urn:uuid:9b3489d6-bcc2-4cc7-b2c8-fbb2ed900a0b>","cc-path":"CC-MAIN-2014-15/segments/1397609525991.2/warc/CC-MAIN-20140416005205-00069-ip-10-147-4-33.ec2.in... |
Linear Independence of Square Roots of Primes
Date: 11/07/96 at 07:17:49
From: Mats Oldin
Subject: Linear independence of square roots of primes
I need to find a way of proving that the square roots of a finite set
of different primes are linearly independent over the field of
rationals. I've tried to solve the problem... | {"url":"http://mathforum.org/library/drmath/view/51638.html","timestamp":"2014-04-17T13:27:02Z","content_type":null,"content_length":"7970","record_id":"<urn:uuid:d1538b06-a841-4d78-a164-57f6bdcd0acf>","cc-path":"CC-MAIN-2014-15/segments/1397609530131.27/warc/CC-MAIN-20140416005210-00280-ip-10-147-4-33.ec2.internal.war... |
Kuratowski closure-complement problem for other mathematical objects?
up vote 10 down vote favorite
The original Kuratowski closure-complement problem asks:
How many distinct sets can be obtained by repeatedly applying the set operations of closure and complement to a given starting subset of a topological space?
M... | {"url":"http://mathoverflow.net/questions/16363/kuratowski-closure-complement-problem-for-other-mathematical-objects?sort=votes","timestamp":"2014-04-23T20:26:13Z","content_type":null,"content_length":"59412","record_id":"<urn:uuid:a14fb122-7a27-4d4c-96d9-0ae6f0246805>","cc-path":"CC-MAIN-2014-15/segments/1398223203422... |
Applying Occam’s razor in modeling cognition: A Bayesian approach
Results 1 - 10 of 55
- Psychological Review , 2002
"... The question of how one should decide among competing explanations of data is at the heart of the scientific enterprise. Computational models of cognition are increasingly being advanced as
explanat... | {"url":"http://citeseerx.ist.psu.edu/showciting?cid=157086","timestamp":"2014-04-20T21:27:27Z","content_type":null,"content_length":"40195","record_id":"<urn:uuid:72840f02-c908-495c-b882-9b1ea0874202>","cc-path":"CC-MAIN-2014-15/segments/1397609539230.18/warc/CC-MAIN-20140416005219-00274-ip-10-147-4-33.ec2.internal.war... |
New to C programming and need help.
02-04-2009 #1
Registered User
Join Date
Feb 2009
New to C programming and need help.
Ok so I am trying to write a basic program that will take a set of numbers, and determine the 2 largest numbers in the set. The stipulation is that I can use a while loop and some if statemen... | {"url":"http://cboard.cprogramming.com/c-programming/111859-new-c-programming-need-help.html","timestamp":"2014-04-19T23:50:23Z","content_type":null,"content_length":"63903","record_id":"<urn:uuid:6804e089-4634-42dd-a9f5-c4082676e4df>","cc-path":"CC-MAIN-2014-15/segments/1397609537754.12/warc/CC-MAIN-20140416005217-004... |
Thomas Industrial Library
8.2 DYNAMIC MODELS
It is often convenient in dynamic analysis to create a simplified model of a complicated part. These models are sometimes considered to be a collection of point masses connected by massless rods,
referred to as a lumped-parameter model, or just lumped model. For a lumped mod... | {"url":"http://www.thomasglobal.com/library/UI/Cams/Cam%20Design%20and%20Manufacturing%20Handbook/Dynamics%20of%20Cam%20Systems_2/2/default.aspx","timestamp":"2014-04-21T02:28:27Z","content_type":null,"content_length":"159136","record_id":"<urn:uuid:a64a8757-5b6f-4f8e-ade0-6186d45ff58b>","cc-path":"CC-MAIN-2014-15/segm... |
Coordinate system
From Wiki.GIS.com
A coordinate system is a system for specifying points using coordinates measured in some specified way. The simplest coordinate system consists of coordinate axes oriented perpendicularly to each
other, known as Cartesian coordinates. Depending on the type of problem under considerat... | {"url":"http://wiki.gis.com/wiki/index.php/Coordinate_system","timestamp":"2014-04-16T20:12:33Z","content_type":null,"content_length":"34242","record_id":"<urn:uuid:26e67f7c-4c74-468d-bd6d-d84941a4c6a6>","cc-path":"CC-MAIN-2014-15/segments/1397609524644.38/warc/CC-MAIN-20140416005204-00268-ip-10-147-4-33.ec2.internal.w... |
Venice, CA Math Tutor
Find a Venice, CA Math Tutor
...From my experience, I have found many creative ways of explaining common problems. I love getting to the point when the student finally understands the concept and tells me that they want to
finish the problem on their own. I look forward to helping you with you... | {"url":"http://www.purplemath.com/Venice_CA_Math_tutors.php","timestamp":"2014-04-16T16:25:25Z","content_type":null,"content_length":"23687","record_id":"<urn:uuid:2ea2a90e-ecd2-4cf4-a0db-9f093e444c56>","cc-path":"CC-MAIN-2014-15/segments/1397609524259.30/warc/CC-MAIN-20140416005204-00232-ip-10-147-4-33.ec2.internal.wa... |
The getConditionalProbability function you've developed operates on counts and frequencies rather than on probabilities. In reading the literature on Bayesian reasoning, you will notice that the
enumeration method for computing P(A | B) is only briefly discussed. Most authors quickly move onto describing how P(A | B) c... | {"url":"http://www.devshed.com/c/a/PHP/Implement-Bayesian-inference-using-PHP-Part-1/4/","timestamp":"2014-04-16T22:17:56Z","content_type":null,"content_length":"43119","record_id":"<urn:uuid:c6f141b0-9c1a-4137-92d7-3af5b0c93425>","cc-path":"CC-MAIN-2014-15/segments/1397609525991.2/warc/CC-MAIN-20140416005205-00072-ip-... |
book-stacking problem
How much of an overhang can be achieved by stacking books on a table? Assume each book is one unit long. To balance one book on a table, the center of gravity of the book must be somewhere over the
table; to achieve the maximum overhang, the center of gravity should be just over the table's edge. ... | {"url":"http://www.daviddarling.info/encyclopedia/B/book-stacking_problem.html","timestamp":"2014-04-17T18:59:10Z","content_type":null,"content_length":"6904","record_id":"<urn:uuid:622f7679-92e0-41ab-9f95-a884800869c0>","cc-path":"CC-MAIN-2014-15/segments/1398223205375.6/warc/CC-MAIN-20140423032005-00525-ip-10-147-4-3... |
The Galactic Question Center
Wednesday, January 11, 2006
Pearls before swine
Is it possible to win
this game
Yes! I did it by taking 2 from the top, then 3 from the bottom then 1 from the top, then two from the bottom.
The only chance for winning is if you start. There are 3 rows (3, 4 and 5 pearls). Any move you mak... | {"url":"http://galquest.blogspot.com/2006/01/pearls-before-swine.html","timestamp":"2014-04-16T07:32:08Z","content_type":null,"content_length":"39697","record_id":"<urn:uuid:06f3c598-9cf7-41d6-b471-0c1e6b41c51c>","cc-path":"CC-MAIN-2014-15/segments/1397609521558.37/warc/CC-MAIN-20140416005201-00185-ip-10-147-4-33.ec2.i... |
vector lies in the plane
October 10th 2011, 11:58 AM
vector lies in the plane
what does it mean to say a vector lies in a plane in R^3. Does it mean it's inital point lies on the plane?
October 10th 2011, 12:07 PM
Re: vector lies in the plane
usually it means that the vector can be written as a linear combinati... | {"url":"http://mathhelpforum.com/advanced-algebra/190003-vector-lies-plane-print.html","timestamp":"2014-04-16T14:01:44Z","content_type":null,"content_length":"7965","record_id":"<urn:uuid:b7e77210-5a65-429c-9610-3f925f0f568b>","cc-path":"CC-MAIN-2014-15/segments/1397609523429.20/warc/CC-MAIN-20140416005203-00186-ip-10... |