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Posts from June 2, 2010 on mathematical musings
Here is a problem I composed, which recently appeared on the Colorado Mathematical Olympiad.
If one wishes to color the integers so that every two integers that differ by a factorial get different colors, what is the fewest number of colors necessary?
I might describe... | {"url":"http://matthewkahle.wordpress.com/2010/06/02/","timestamp":"2014-04-16T04:11:56Z","content_type":null,"content_length":"16726","record_id":"<urn:uuid:1d01fc28-026d-446d-bacc-03cc1308f1a0>","cc-path":"CC-MAIN-2014-15/segments/1398223202774.3/warc/CC-MAIN-20140423032002-00411-ip-10-147-4-33.ec2.internal.warc.gz"} |
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A,B,C,D are four distinct points in three space. Suppose each ... | {"url":"http://openstudy.com/updates/4f49f827e4b00c3c5d333ab2","timestamp":"2014-04-17T18:32:42Z","content_type":null,"content_length":"92734","record_id":"<urn:uuid:f147b80d-1433-4149-9a17-3bcd2795b978>","cc-path":"CC-MAIN-2014-15/segments/1397609530895.48/warc/CC-MAIN-20140416005210-00382-ip-10-147-4-33.ec2.internal.... |
The Problem Figure 4-72 Represents A Relative Magnitude ... | Chegg.com
The problem figure 4-72 represents a relative magnitude detectorthat takes two three-bit binary numbers X2, X1, X0 and Y2, Y1, Y0and determines whether they are equal and, if not which oneis larger.
There are three outputs, from top to botton
1st O... | {"url":"http://www.chegg.com/homework-help/questions-and-answers/problem-figure-4-72-represents-relative-magnitude-detectorthat-takes-two-three-bit-binary--q119663","timestamp":"2014-04-20T02:56:08Z","content_type":null,"content_length":"19472","record_id":"<urn:uuid:ad061bd9-0617-4897-8d70-c8da9a03d8dc>","cc-path":"CC... |
solving for A and B
November 27th 2008, 06:21 PM #1
Junior Member
Sep 2006
solving for A and B
1/((u^2)-4) = A/(u-2) + B/(u+2)
how do u solve for A and B?
i am told that A and B can be easily solved to be A=.25 B=-.25 but i dont see how to get that. Please help
Ahh, I'm going to assume that this is ... | {"url":"http://mathhelpforum.com/algebra/61957-solving-b.html","timestamp":"2014-04-20T05:43:27Z","content_type":null,"content_length":"47390","record_id":"<urn:uuid:eea97586-1a58-4976-a595-b016246e35b9>","cc-path":"CC-MAIN-2014-15/segments/1397609538022.19/warc/CC-MAIN-20140416005218-00137-ip-10-147-4-33.ec2.internal.... |
Explanatory Preamble
To understand the following discussion you first have to know all the jargon, so here are the explanations for the alphabets soup.
The Earned Value Technique, loosely referred to as "EV" is a project management control tool defined as: "An objective measure of the value of work performed expressed ... | {"url":"http://www.maxwideman.com/guests/earned_value/intro.htm","timestamp":"2014-04-16T04:18:41Z","content_type":null,"content_length":"9645","record_id":"<urn:uuid:acb195b9-a4af-474b-b644-7085f5445b05>","cc-path":"CC-MAIN-2014-15/segments/1397609521512.15/warc/CC-MAIN-20140416005201-00036-ip-10-147-4-33.ec2.internal... |
normalize for opengl
Hey guys
so i have a list of vertex points which i want to render
i have applied light and would like to apply it to each vertex point to get a smooth rendering
but what i want is the relationship between the normalize vector and the glvertex points.
a formula.
if x<0
same for y and z add -1 and 0.... | {"url":"http://www.cplusplus.com/forum/general/108028/","timestamp":"2014-04-19T09:56:09Z","content_type":null,"content_length":"11335","record_id":"<urn:uuid:693d44e2-34b0-4101-b21d-ccd2000c4422>","cc-path":"CC-MAIN-2014-15/segments/1397609537097.26/warc/CC-MAIN-20140416005217-00088-ip-10-147-4-33.ec2.internal.warc.gz... |
Compactness Theorem for First Order Logic
up vote 5 down vote favorite
Hi all, I am interested in proofs without using Goedel's completeness theorem.
• Does anyone have a reference to a proof of this theorem that uses Skolem Functions?
• How come Enderton's (Introduction to Logic) has a half a page proof (which loo... | {"url":"http://mathoverflow.net/questions/45487/compactness-theorem-for-first-order-logic/45579","timestamp":"2014-04-17T15:56:02Z","content_type":null,"content_length":"86795","record_id":"<urn:uuid:6d01747d-a3c5-44a6-9f0f-055855153acf>","cc-path":"CC-MAIN-2014-15/segments/1397609530136.5/warc/CC-MAIN-20140416005210-0... |
Re: st: coefficient interpretation in OLS
Notice: On March 31, it was announced that Statalist is moving from an email list to a forum. The old list will shut down at the end of May, and its replacement, statalist.org is already up and
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: st: c... | {"url":"http://www.stata.com/statalist/archive/2012-08/msg00904.html","timestamp":"2014-04-18T14:40:56Z","content_type":null,"content_length":"12725","record_id":"<urn:uuid:55b3c1f3-52c6-4c72-89af-e65a0c32d3de>","cc-path":"CC-MAIN-2014-15/segments/1397609533689.29/warc/CC-MAIN-20140416005213-00516-ip-10-147-4-33.ec2.in... |
Assignment Specifications
Each written assignment is limited to no more than four single-sided, single-spaced pages (the first should require significantly less) using 12 point font, including all figures. Figures are not to
be hand-drawn and should be large enough to be easily legible. Anything beyond the four page li... | {"url":"http://axon.cs.byu.edu/Dan/478/assignments.php","timestamp":"2014-04-21T02:13:24Z","content_type":null,"content_length":"26110","record_id":"<urn:uuid:541b6485-0e78-485b-bb6a-40df16bd3075>","cc-path":"CC-MAIN-2014-15/segments/1397609539447.23/warc/CC-MAIN-20140416005219-00096-ip-10-147-4-33.ec2.internal.warc.gz... |
Boolean Algebra and Karnaugh Maps
March 5th 2010, 03:09 AM #1
Nov 2008
Port Hedland,Australia
Boolean Algebra and Karnaugh Maps
Design a logic circuit that will indicate whether a 4-bit binary input is exactly divisible by
2 or 5. That is, the output will be a logic ‘1’ when the input is divisible by 2 ... | {"url":"http://mathhelpforum.com/advanced-math-topics/132168-boolean-algebra-karnaugh-maps.html","timestamp":"2014-04-17T05:46:00Z","content_type":null,"content_length":"28853","record_id":"<urn:uuid:7096a372-ae76-4aeb-8087-b122854948d4>","cc-path":"CC-MAIN-2014-15/segments/1397609526252.40/warc/CC-MAIN-20140416005206-... |
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Your question is ready. Sign... | {"url":"http://openstudy.com/updates/512768d9e4b0dbff5b3d0aca","timestamp":"2014-04-19T04:44:37Z","content_type":null,"content_length":"94009","record_id":"<urn:uuid:4e8967c0-e1b7-4644-b521-36a5161677ea>","cc-path":"CC-MAIN-2014-15/segments/1397609535775.35/warc/CC-MAIN-20140416005215-00635-ip-10-147-4-33.ec2.internal.... |
[FOM] Formalization Thesis vs Formal nature of mathematics
Vladimir Sazonov Vladimir.Sazonov at liverpool.ac.uk
Sun Dec 30 20:41:22 EST 2007
On Mon, 31 Dec 2007, S. S. Kutateladze wrote:
> Sazonov wrote :
> The main definitive and distinctive attribute of mathematics is that it
> is rigorous... I take rigorous = for... | {"url":"http://www.cs.nyu.edu/pipermail/fom/2007-December/012406.html","timestamp":"2014-04-19T09:28:48Z","content_type":null,"content_length":"10146","record_id":"<urn:uuid:0fdfe858-c8b4-40d3-8ebe-291582b201c9>","cc-path":"CC-MAIN-2014-15/segments/1397609537097.26/warc/CC-MAIN-20140416005217-00444-ip-10-147-4-33.ec2.i... |
Mathematics Major Guide for 2008-2009
What is Mathematics
A person who majors in mathematics is trained to solve problems by ignoring superfluous detail, looking for structure, and designing a logical method of attack that considers a wide range of possible
outcomes and tries to eliminate preconceived notions. Masterin... | {"url":"http://www.utk.edu/academics/programs/08/Math08.html","timestamp":"2014-04-18T15:47:48Z","content_type":null,"content_length":"21777","record_id":"<urn:uuid:a3601369-2377-4d58-9227-76752c47d8c9>","cc-path":"CC-MAIN-2014-15/segments/1398223203841.5/warc/CC-MAIN-20140423032003-00540-ip-10-147-4-33.ec2.internal.wa... |
2009.86: The Scaling and Squaring Method for the Matrix Exponential Revisited
2009.86: Nicholas J. Higham (2009) The Scaling and Squaring Method for the Matrix Exponential Revisited. SIAM Review, 51 (4). pp. 747-764. ISSN 0036-1445
Full text available as:
PDF - Requires a PDF viewer such as GSview, Xpdf or Adobe Acro... | {"url":"http://eprints.ma.man.ac.uk/1351/","timestamp":"2014-04-18T21:00:36Z","content_type":null,"content_length":"10308","record_id":"<urn:uuid:84f9aa79-40ce-42e1-9a1c-75e07a00c745>","cc-path":"CC-MAIN-2014-15/segments/1398223203422.8/warc/CC-MAIN-20140423032003-00274-ip-10-147-4-33.ec2.internal.warc.gz"} |
Swampscott Trigonometry Tutor
Find a Swampscott Trigonometry Tutor
...However, I am not familiar with some topics in discrete mathematics such as information theory and graph theory. I have tutored this subject and also wrote the online component for the
Houghton-Mifflin text on the subject. I had the coursework as... | {"url":"http://www.purplemath.com/Swampscott_Trigonometry_tutors.php","timestamp":"2014-04-16T22:09:49Z","content_type":null,"content_length":"24095","record_id":"<urn:uuid:c07c2420-c2ee-4dae-8719-32aa3f313e9c>","cc-path":"CC-MAIN-2014-15/segments/1397609525991.2/warc/CC-MAIN-20140416005205-00407-ip-10-147-4-33.ec2.int... |
what? why?
he Golden Mean; the Golden Section; the Golden Ratio. These are all popular names for a mathematical concept which expresses the relationship of two parts of a whole with each other and with the
whole. The number represented by the Greek letter Phi is irrational. Phi is calculated as 1 plus the square root o... | {"url":"http://www.thegoldenmean.com/why.html","timestamp":"2014-04-20T13:18:50Z","content_type":null,"content_length":"5232","record_id":"<urn:uuid:5736481c-dc96-4d27-bd79-ff296595bd49>","cc-path":"CC-MAIN-2014-15/segments/1397609538787.31/warc/CC-MAIN-20140416005218-00246-ip-10-147-4-33.ec2.internal.warc.gz"} |
It is true that Fourier had the opinion that the principal aim of mathematics was public utility and explanation of natural phenomena; but a philosopher like him should have known that the sole end
of science is the honor of the human mind, and that under this title a question about numbers is worth as much as a questi... | {"url":"http://www.maa.org/quote_alphabetical/j?page=1&device=mobile","timestamp":"2014-04-17T19:54:42Z","content_type":null,"content_length":"30300","record_id":"<urn:uuid:bc1fdb1b-3649-4852-ae3f-7c9664b43593>","cc-path":"CC-MAIN-2014-15/segments/1397609530895.48/warc/CC-MAIN-20140416005210-00475-ip-10-147-4-33.ec2.in... |
Burke, VA SAT Math Tutor
Find a Burke, VA SAT Math Tutor
...Has your child had a drastic grade decrease in mathematics? Or does your child simply want to get ahead? Does your child need a quality math tutor?
26 Subjects: including SAT math, Spanish, English, statistics
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Summary: On a Generalization of Meyniel's Conjecture
on the Cops and Robbers Game
Noga Alon
Tel Aviv University
and Institute for Advanced Study, Princeton
Abbas Mehrabian
Department of Combinatorics and Optimization
University of Waterloo
We consider a variant of the Cops and Robbers game where the robber can move s e... | {"url":"http://www.osti.gov/eprints/topicpages/documents/record/173/1705935.html","timestamp":"2014-04-20T00:56:08Z","content_type":null,"content_length":"7763","record_id":"<urn:uuid:f7ff547b-79ee-4df3-9f71-48dfa59f7ce6>","cc-path":"CC-MAIN-2014-15/segments/1398223204388.12/warc/CC-MAIN-20140423032004-00042-ip-10-147-... |
Salem, NH Prealgebra Tutor
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...They will be more efficient at solving problems and have an improved mathematical memory. The money will then help me continue my education. It's a win-win!
27 Subjects: including prealgebra, chemistry, reading, calculus
...Phonics requires breakin... | {"url":"http://www.purplemath.com/salem_nh_prealgebra_tutors.php","timestamp":"2014-04-19T23:21:22Z","content_type":null,"content_length":"24015","record_id":"<urn:uuid:1effeb8e-8f70-4fde-b09c-d89f32c66f6a>","cc-path":"CC-MAIN-2014-15/segments/1398223205137.4/warc/CC-MAIN-20140423032005-00413-ip-10-147-4-33.ec2.interna... |
Accelerated Cyclical Redundancy Check
Patent application title: Accelerated Cyclical Redundancy Check
Sign up to receive free email alerts when patent applications with chosen keywords are published SIGN UP
The disclosure relates generally to the field... | {"url":"http://www.faqs.org/patents/app/20130132796","timestamp":"2014-04-20T20:29:02Z","content_type":null,"content_length":"82418","record_id":"<urn:uuid:b295f602-d5e8-4c40-8c17-8638e17094a7>","cc-path":"CC-MAIN-2014-15/segments/1397609539066.13/warc/CC-MAIN-20140416005219-00310-ip-10-147-4-33.ec2.internal.warc.gz"} |
Towards the FFRS Description of 2dCFT (A)
Posted by Urs Schreiber
With a small group of students here in Hamburg, we want to talk about stuff that will eventually enable us to understand the FFRS theorem, which explains how 2-dimensional rational conformal field
theories are characterized by special Frobenius algebra o... | {"url":"http://golem.ph.utexas.edu/category/2007/01/towards_the_ffrs_description_o.html","timestamp":"2014-04-21T02:00:35Z","content_type":null,"content_length":"13367","record_id":"<urn:uuid:782fbfb6-817d-4430-8693-736fb2b78211>","cc-path":"CC-MAIN-2014-15/segments/1398223202457.0/warc/CC-MAIN-20140423032002-00661-ip-... |
matrix multiplication (newbie question)
Bill Baxter wbaxter at gmail.com
Wed Nov 8 17:39:07 CST 2006
Also have a look at the section on Arrays vs Matrices in the Numpy for
Matlab users page. That particular section has nothing to do with
Matlab, really.
Most of the suggestions and comments made here are already on tha... | {"url":"http://mail.scipy.org/pipermail/numpy-discussion/2006-November/024537.html","timestamp":"2014-04-18T20:45:56Z","content_type":null,"content_length":"5179","record_id":"<urn:uuid:1ce29e60-cb76-425b-91be-1e8fd06684d5>","cc-path":"CC-MAIN-2014-15/segments/1397609535095.9/warc/CC-MAIN-20140416005215-00382-ip-10-147... |
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lang arts
1. Which sentence describes setting? As much as it saddened her, the first thing Nan had to do was leave her beloved family home. Marcy wanted to go to the dance, but Rob s treatment of her that day
gave her second thoughts. Steve was fairly short, with glasses and d... | {"url":"http://www.jiskha.com/members/profile/posts.cgi?name=help&page=3","timestamp":"2014-04-21T05:21:34Z","content_type":null,"content_length":"28293","record_id":"<urn:uuid:8d389644-e3fb-4b81-ac09-2fb0144c8cc0>","cc-path":"CC-MAIN-2014-15/segments/1397609539493.17/warc/CC-MAIN-20140416005219-00501-ip-10-147-4-33.ec... |
- Boston.com
Re: Sox Get Carp
posted at 2/21/2013 12:40 AM EST
In response to royf19's comment:
In response to SonicsMonksLyresVicars's comment:
In response to georom4's comment:
bottom line is that it has been a some time since lester, clay, and lackey have been top of the rotation pitchers...if they can do it this ye... | {"url":"http://boston.com/community/forums/sports/red-sox/on-the-front-burner/sox-get-carp/100/6552136?ia=15601427","timestamp":"2014-04-20T06:56:12Z","content_type":null,"content_length":"111722","record_id":"<urn:uuid:9e5ffde2-74fc-40df-808e-59760bfd014f>","cc-path":"CC-MAIN-2014-15/segments/1397609538022.19/warc/CC-... |
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Find the no of positive integral solutions for the equations (... | {"url":"http://openstudy.com/updates/50af682ee4b09749ccac05d8","timestamp":"2014-04-18T13:44:26Z","content_type":null,"content_length":"40833","record_id":"<urn:uuid:4edec7aa-70fd-4b15-81e1-be26a6330de5>","cc-path":"CC-MAIN-2014-15/segments/1398223203841.5/warc/CC-MAIN-20140423032003-00507-ip-10-147-4-33.ec2.internal.w... |
How many gigabites is 3276 megabites?
You asked:
How many gigabites is 3276 megabites?
Say hello to Evi
Evi is our best selling mobile app that can answer questions about local knowledge, weather, books, music, films, people and places, recipe ideas, shopping and much more. Over the next few months we
will be adding al... | {"url":"http://www.evi.com/q/how_many_gigabites_is_3276_megabites","timestamp":"2014-04-20T13:38:24Z","content_type":null,"content_length":"49371","record_id":"<urn:uuid:4d06f61b-a252-42e2-99ae-963e5781b27c>","cc-path":"CC-MAIN-2014-15/segments/1397609538787.31/warc/CC-MAIN-20140416005218-00374-ip-10-147-4-33.ec2.inter... |
Posts from March 2010 on Quomodocumque
Fritz Grunewald, RIP
Author photos
Tagged headshots, photography
Fritz Grunewald died unexpectedly this week, just before his 61st birthday. I never met him but have always been an admirer of his work, and I’d been meaning to post about his lovely paper with
Lubotzky, “Linear re... | {"url":"http://quomodocumque.wordpress.com/2010/03/","timestamp":"2014-04-16T18:56:28Z","content_type":null,"content_length":"95127","record_id":"<urn:uuid:44bdb775-64e9-4dc4-b3f4-63a3b25f97c6>","cc-path":"CC-MAIN-2014-15/segments/1398223205375.6/warc/CC-MAIN-20140423032005-00574-ip-10-147-4-33.ec2.internal.warc.gz"} |
Palos Heights Algebra 1 Tutor
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...I have teaching experience, as well. I spent a summer teaching at a high school math camp, I have been a coach for the Georgia state math team for a few years now, and I was a grader for the IU
math department. I've tutored many people I've encou... | {"url":"http://www.purplemath.com/Palos_Heights_algebra_1_tutors.php","timestamp":"2014-04-21T15:21:10Z","content_type":null,"content_length":"24285","record_id":"<urn:uuid:7ebd5846-b983-4911-84ab-174d89edb925>","cc-path":"CC-MAIN-2014-15/segments/1398223207046.13/warc/CC-MAIN-20140423032007-00215-ip-10-147-4-33.ec2.in... |
[plt-scheme] order of magnitude
From: Jos Koot (jos.koot at telefonica.net)
Date: Thu Nov 5 18:23:47 EST 2009
Interesting, but as time complexity is the same, I prefer to use the difference between the base 10 logarithm of the numerator and
denominator as a first guess. In this way I use the wisdom of the mathematician... | {"url":"http://lists.racket-lang.org/users/archive/2009-November/036505.html","timestamp":"2014-04-19T11:56:19Z","content_type":null,"content_length":"9385","record_id":"<urn:uuid:9600cad9-3226-49a1-a870-f51506e2aed5>","cc-path":"CC-MAIN-2014-15/segments/1398223206647.11/warc/CC-MAIN-20140423032006-00081-ip-10-147-4-33... |
s are
Quantitative Methods Mat540Test.Quiz 1 In general, an increase in price increases the break even point if all costs are held constant. If variable costs increase, but price and fixed costs are held
constant, the break even point will decrease. Parameters are known, constant values that are usually coefficients o... | {"url":"http://express-helpline.com/Quantitative-Methods-MatTest-Quiz-general-increase-price-increases-break-even-12595268.html","timestamp":"2014-04-21T07:42:28Z","content_type":null,"content_length":"16594","record_id":"<urn:uuid:86771e7a-d82d-4adb-a586-8396aaacdaad>","cc-path":"CC-MAIN-2014-15/segments/1397609539665... |
Stratified Dispersal
Metapopulation model of stratified dispersal
Sharov and Liebhold (1998, Ecol. Appl. 8: 1170-1179. [Get a PDF reprint!]) have developed a metapopulation model of stratified dispersal. This model is based on two functions: colony establishment
rate and colony growth rate. The probability of new colon... | {"url":"http://home.comcast.net/~sharov/PopEcol/lec12/stratdsp.html","timestamp":"2014-04-18T14:01:04Z","content_type":null,"content_length":"9996","record_id":"<urn:uuid:8b2546e1-6cba-4310-bcc9-bad6dac6633a>","cc-path":"CC-MAIN-2014-15/segments/1398223203235.2/warc/CC-MAIN-20140423032003-00195-ip-10-147-4-33.ec2.inter... |
A Partition of Connected Graphs
We define an algorithm $k$ which takes a connected graph $G$ on a totally ordered vertex set and returns an increasing tree $R$ (which is not necessarily a subtree of $G$). We characterize the set of
graphs $G$ such that $k(G)=R$. Because this set has a simple structure (it is isomorphic... | {"url":"http://www.combinatorics.org/ojs/index.php/eljc/article/view/v12i1n1","timestamp":"2014-04-18T15:44:49Z","content_type":null,"content_length":"14709","record_id":"<urn:uuid:2aebcc5a-3c02-43c5-97d9-7b338be9a3b5>","cc-path":"CC-MAIN-2014-15/segments/1397609537271.8/warc/CC-MAIN-20140416005217-00106-ip-10-147-4-33... |
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SAT math
A family of 2 parents and 4 children is eating lunch at a rectangular table with 2 chairs on each side and one chair on each end. In how many ways can they be arranged if the two parents sit in the
two end chairs? a. 12 b. 30 c. 36 d. 48 e. 720
first set up a regular proportion: 5a... | {"url":"http://www.jiskha.com/members/profile/posts.cgi?name=PAULA","timestamp":"2014-04-20T22:15:29Z","content_type":null,"content_length":"28122","record_id":"<urn:uuid:5acb3563-ce3b-4d0a-be9f-7b6b52616191>","cc-path":"CC-MAIN-2014-15/segments/1398223206647.11/warc/CC-MAIN-20140423032006-00300-ip-10-147-4-33.ec2.inte... |
Prove that the Image of a Continuous Function on a Dense Set is Dense
June 20th 2010, 10:55 AM
Prove that the Image of a Continuous Function on a Dense Set is Dense
I've been working on this for days and have made no progress, so any advice would be appreciated.
Definition: Let $R$ be an ordered field, and $Q \... | {"url":"http://mathhelpforum.com/differential-geometry/148983-prove-image-continuous-function-dense-set-dense-print.html","timestamp":"2014-04-17T10:43:09Z","content_type":null,"content_length":"20124","record_id":"<urn:uuid:63f1ddf5-f8ff-431b-a08e-83fae68daad4>","cc-path":"CC-MAIN-2014-15/segments/1397609527423.39/war... |
derivatives of functions
October 16th 2011, 11:31 AM #1
Oct 2011
derivatives of functions
I appreciate if you can help me guys with any of these problems. They are good for practice and review of derivatives.
Problem 1:
Let f(x) be a real valued function defined for all x >= 1, that satisfies
f(1) =... | {"url":"http://mathhelpforum.com/differential-geometry/190526-derivatives-functions.html","timestamp":"2014-04-17T05:28:12Z","content_type":null,"content_length":"35977","record_id":"<urn:uuid:a094ffb2-cf94-4fc3-9d94-c398b8046396>","cc-path":"CC-MAIN-2014-15/segments/1397609532128.44/warc/CC-MAIN-20140416005212-00411-i... |
Kernels for Global Constraints
Serge Gaspers, Stefan Szeider
Bessiere et al. (AAAI'08) showed that several intractable global constraints can be efficiently propagated when certain natural problem parameters are small. In particular, the complete propagation
of a global constraint is fixed-parameter tractable in k — th... | {"url":"http://ijcai.org/papers11/Abstracts/098.html","timestamp":"2014-04-19T11:57:13Z","content_type":null,"content_length":"2041","record_id":"<urn:uuid:1ae231f8-7b4e-4c57-8446-1cee4208608d>","cc-path":"CC-MAIN-2014-15/segments/1397609537186.46/warc/CC-MAIN-20140416005217-00328-ip-10-147-4-33.ec2.internal.warc.gz"} |
Bhama Srinivasan - AWM Association for Women in Mathematics
The Invasion of Geometry into Finite Group Theory
(dedicated to the memory of Louise Hay)
Louisville, Kentucky 1990
BHAMA SRINIVASAN was born in 1935 in Madras, India. She received her BA and MSc degrees from the University of Madras and went to England for f... | {"url":"https://sites.google.com/site/awmmath/programs/noether-lectures/noether-lecturers/noether-profiles/bhamasrinivasan","timestamp":"2014-04-20T13:39:00Z","content_type":null,"content_length":"41864","record_id":"<urn:uuid:32b41d32-59cd-4bfd-8983-4ed91f606537>","cc-path":"CC-MAIN-2014-15/segments/1397609538787.31/w... |
The "Powers" of a Fourth-Dimensional Being.
I think the thing I've enjoyed the most about Prof. Kaku's lectures and books is the references to higher-dimensional beings, and their abilities. Michio Kaku has often said that they would be like
"gods", and that is not an overstatement in any way.
For example, a "god" is s... | {"url":"http://www.physicsforums.com/showthread.php?t=5526","timestamp":"2014-04-20T05:47:36Z","content_type":null,"content_length":"80028","record_id":"<urn:uuid:170bbd26-8172-45e6-9b0b-bda031709f44>","cc-path":"CC-MAIN-2014-15/segments/1398223206120.9/warc/CC-MAIN-20140423032006-00408-ip-10-147-4-33.ec2.internal.warc... |
871 Runs?
During the thread on Ramon Ortiz, I ended up doing a small experiment using Tom Tango's Marcel projections for 2007. I'm just going to copy what I wrote in that thread for clarity's sake:
"With all that said, I downloaded Tango's 2007 Marcel projections (http://www.insidethebook.com/ee/index.php/site/comments... | {"url":"http://www.twinkietown.com/2007/1/24/122426/272","timestamp":"2014-04-18T13:38:36Z","content_type":null,"content_length":"92499","record_id":"<urn:uuid:4b43f9a7-5c78-4765-a9de-39aab86b004c>","cc-path":"CC-MAIN-2014-15/segments/1397609533689.29/warc/CC-MAIN-20140416005213-00549-ip-10-147-4-33.ec2.internal.warc.g... |
Unique Factorization of Ideals
Theorem: Let $I$ be an ideal of a Dedekind domain $R$. Then there exists an ideal $J$ with $I J$ principal.
Proof: Take any nonzero $\alpha \in I$, and let $J = \{\beta\in R: \beta I\subset (\alpha)\}$. Then $J$ is a nonzero ideal, and we have $I J \subset (\alpha)$. We wish to show that ... | {"url":"http://crypto.stanford.edu/pbc/notes/numberfield/unique.html","timestamp":"2014-04-20T13:18:47Z","content_type":null,"content_length":"10377","record_id":"<urn:uuid:e7e1ccca-c16e-40ad-9023-7b9c3c2346c2>","cc-path":"CC-MAIN-2014-15/segments/1397609538787.31/warc/CC-MAIN-20140416005218-00460-ip-10-147-4-33.ec2.in... |
Spontaneous formation of graphene-like stripes on high-index diamond C(331) surface
We employ first-principles density functional theory calculations to study the surface reconstruction, energetic stability, and electronic structure of diamond C(331) surface. Spontaneous formation
of graphene-like stripes on the recons... | {"url":"http://www.nanoscalereslett.com/content/7/1/460?fmt_view=classic","timestamp":"2014-04-16T16:28:19Z","content_type":null,"content_length":"107863","record_id":"<urn:uuid:8cd3405f-0fe7-4dd0-b43a-6134e15e843c>","cc-path":"CC-MAIN-2014-15/segments/1397609524259.30/warc/CC-MAIN-20140416005204-00602-ip-10-147-4-33.e... |
Physics Forums - Rubik's cube combinations
Rubik's cube permutations
I suck with really big numbers, so that's where you guys come in :)
I basically want to know the number of permutations a 1000x1000x1000 Rubik's cube has, as well as a 5x5x5x5x5 Rubik's cube. Yes, a 5-dimensional one.
I've been reading these a formul... | {"url":"http://www.physicsforums.com/printthread.php?t=185877","timestamp":"2014-04-17T00:57:53Z","content_type":null,"content_length":"10508","record_id":"<urn:uuid:3d215001-f933-40cf-846f-594d318181f6>","cc-path":"CC-MAIN-2014-15/segments/1398223202548.14/warc/CC-MAIN-20140423032002-00572-ip-10-147-4-33.ec2.internal.... |
Unit tangent, normal, binormal etc.
December 4th 2009, 02:10 AM
Unit tangent, normal, binormal etc.
Find the vectors
T, N and B as well as the curvature and the torsion of;
r(t) = (t^3)/3i + (t^2)/2j for t>0
I parametrized the curve and got
r(s) = ((3s+1)^2/3 - 1)^3/2)/2i + ((3s+1)^2/3 - 1)/2i
a... | {"url":"http://mathhelpforum.com/calculus/118437-unit-tangent-normal-binormal-etc-print.html","timestamp":"2014-04-17T15:09:05Z","content_type":null,"content_length":"5742","record_id":"<urn:uuid:133f18ee-1403-4b4f-bfd2-43b789e628d4>","cc-path":"CC-MAIN-2014-15/segments/1397609530131.27/warc/CC-MAIN-20140416005210-0008... |
zzt:80/90年代 Tian-Todorov Lemma
送交者: tom_cat 于 2005-10-19, 09:59:06:
80/90年代 Tian-Todorov Lemma
The history about the proof that the moduli space of CY manifolds is uno
bstructed. In 1980 Bogomolov proposed a method how to prove that the mod
uli space of varieties with canonical class zero is unobstructed. His ar
gument... | {"url":"http://www.xys.org/forum/db/194/230.html","timestamp":"2014-04-17T09:34:27Z","content_type":null,"content_length":"3669","record_id":"<urn:uuid:aaa35565-9e5f-41b6-b107-177f4eb288ea>","cc-path":"CC-MAIN-2014-15/segments/1398223205137.4/warc/CC-MAIN-20140423032005-00185-ip-10-147-4-33.ec2.internal.warc.gz"} |
How to Calculate GPA - Your GPA Calculator
When college looms near, students begin to make a fuss about how to calculate GPA. This is not because GPA stands for Gate Pass to Affluence, but in essence it could very well be your ticket to
success. GPA means Grade Point Average, which is a measure of how well you are doin... | {"url":"http://yourgpacalculator.com/how-to-calculate-gpa/","timestamp":"2014-04-20T05:42:04Z","content_type":null,"content_length":"33530","record_id":"<urn:uuid:6bf8e646-2089-4d47-8668-cce93c58aeb2>","cc-path":"CC-MAIN-2014-15/segments/1397609538022.19/warc/CC-MAIN-20140416005218-00381-ip-10-147-4-33.ec2.internal.war... |
The exceptional locus of a minimal resolution of singularities
up vote 2 down vote favorite
Let X be a surface. (A surface is an excellent integral normal separated 2-dimensional scheme.)
Let $\psi:Y\longrightarrow X$ be a minimal resolution of singularities and let $E$ be an irreducible component of the exceptional lo... | {"url":"http://mathoverflow.net/questions/70852/the-exceptional-locus-of-a-minimal-resolution-of-singularities","timestamp":"2014-04-21T00:03:26Z","content_type":null,"content_length":"64086","record_id":"<urn:uuid:14643062-c4da-47c2-9cc3-0c603ed4e470>","cc-path":"CC-MAIN-2014-15/segments/1397609539337.22/warc/CC-MAIN-... |
Warrenville, IL Algebra 2 Tutor
Find a Warrenville, IL Algebra 2 Tutor
...I have a degree in Mathematics from Augustana College. I am currently pursuing my Teaching Certification from North Central College. I have assisted in Pre-Algebra, Algebra, and Pre-Calculus
7 Subjects: including algebra 2, geometry, algebra ... | {"url":"http://www.purplemath.com/warrenville_il_algebra_2_tutors.php","timestamp":"2014-04-17T15:47:46Z","content_type":null,"content_length":"24225","record_id":"<urn:uuid:82f3a6a3-7396-4d61-9c95-e7a5ac7d1fe6>","cc-path":"CC-MAIN-2014-15/segments/1397609530136.5/warc/CC-MAIN-20140416005210-00535-ip-10-147-4-33.ec2.in... |
Refraction and Lenses
Ray Optics: Refraction and Lenses
Refraction and Lenses: Problem Set Overview
This set of 32 problems targets your ability to mathematically relate the index of refraction and the light speed, to use Snell's Law and (at times) trigonometric principles to analyze physical
situations regarding light... | {"url":"http://www.physicsclassroom.com/calcpad/refrn","timestamp":"2014-04-21T04:32:27Z","content_type":null,"content_length":"67970","record_id":"<urn:uuid:aec635f0-6a4a-47ce-bf6a-30d77f2a7337>","cc-path":"CC-MAIN-2014-15/segments/1398223211700.16/warc/CC-MAIN-20140423032011-00150-ip-10-147-4-33.ec2.internal.warc.gz"... |
All combinations for levelplot
In a previous post I explained how to create all possible combinations of the levels of two factors using expand.grid(). Another use for this function is to create a regular grid for two variables to
create a levelplot or a contour plot.
For example, let’s say that we have fitted a multip... | {"url":"http://www.quantumforest.com/2011/10/all-combinations-for-levelplot/","timestamp":"2014-04-18T10:35:48Z","content_type":null,"content_length":"31272","record_id":"<urn:uuid:b7e8bbb9-1e89-4191-b42e-ca60ae2b519c>","cc-path":"CC-MAIN-2014-15/segments/1398223204388.12/warc/CC-MAIN-20140423032004-00344-ip-10-147-4-3... |
Fundamentals of College Algebra 10th edition by Swokowski | 9780534377588 | Chegg.com
Fundamentals of College Algebra 10th edition
Details about this item
Fundamentals of College Algebra: A classic in the series of highly respected Swokowski and Cole mathematics books, the Tenth Edition of FUNDAMENTALS OF COLLEGE ALGE... | {"url":"http://www.chegg.com/textbooks/fundamentals-of-college-algebra-10th-edition-9780534377588-0534377580?ii=4&trackid=bb964fcd&omre_ir=0&omre_sp=","timestamp":"2014-04-19T08:53:04Z","content_type":null,"content_length":"20995","record_id":"<urn:uuid:3a6ed938-d1f0-4047-b8fb-450017ea19cf>","cc-path":"CC-MAIN-2014-15/... |
Equations Formulas
Tipler, Paul A.. 1995. Physics For Scientists and Engineers. Worth Publishers. 3rd ed.
AJ Design - Online Science Mathematics Engineering Software Programs | 2 | 3 | 4 | 5
by Jimmy Raymond
Add to circles to follow new app, calculator, bug report and request updates from AJ Design.
Web Apps, Rich Int... | {"url":"http://www.ajdesigner.com/phppressure/fluid_pressure_equation_pressure.php","timestamp":"2014-04-16T07:20:05Z","content_type":null,"content_length":"22905","record_id":"<urn:uuid:0c39b4ec-56e1-42ce-8f1f-1e7a204cb4f6>","cc-path":"CC-MAIN-2014-15/segments/1398223211700.16/warc/CC-MAIN-20140423032011-00271-ip-10-1... |
Cable tension formulas
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TPS: An Interactive and Automatic Tool for Proving Theorems of Type Theory
TPS: An Interactive and Automatic Tool for Proving Theorems of Type Theory (1994)
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by Peter B. Andrews , Matthew Bishop , Sunil Issar , Dan Nesmith , Frank Pfenning , Hongwei Xi , Contact Pet... | {"url":"http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.46.9426","timestamp":"2014-04-16T09:20:37Z","content_type":null,"content_length":"26772","record_id":"<urn:uuid:3cafb5a1-16f4-40f8-ac68-9da70b0b3c32>","cc-path":"CC-MAIN-2014-15/segments/1397609521558.37/warc/CC-MAIN-20140416005201-00148-ip-10-147-4-33.ec2... |
[Haskell-cafe] defining last using foldr
ok ok at cs.otago.ac.nz
Thu Aug 16 21:03:20 EDT 2007
Let's start by reminding ourselves what foldr does.
foldr f z [x1,x2,...,xn] = f x1 (f x2 ... (f xn z) ...)
Now let's ask about last:
last [] = error ...
last [x1,...,xn] = xn
We're going to have to keep track of whether we ha... | {"url":"http://www.haskell.org/pipermail/haskell-cafe/2007-August/030653.html","timestamp":"2014-04-16T07:54:43Z","content_type":null,"content_length":"3292","record_id":"<urn:uuid:fddda8fa-3964-4704-a1b4-3aef413e549b>","cc-path":"CC-MAIN-2014-15/segments/1397609521558.37/warc/CC-MAIN-20140416005201-00454-ip-10-147-4-3... |
Geometry questions needed help with
May 27th 2009, 05:19 PM
Geometry questions needed help with
I was given 10 bonus questions today, and I managed to solve all but three. I am completely stuck on these three: If you could get me started with hints, I would really appreciated it. Thank you.
1. The three heights... | {"url":"http://mathhelpforum.com/geometry/90755-geometry-questions-needed-help-print.html","timestamp":"2014-04-18T14:45:44Z","content_type":null,"content_length":"14215","record_id":"<urn:uuid:2f7b05f9-832d-4857-bcde-d48d9b173eb6>","cc-path":"CC-MAIN-2014-15/segments/1397609533689.29/warc/CC-MAIN-20140416005213-00030-... |
Algebra Tutors
Havertown, PA 19083
PhD in Physics -Tutoring in Physics, Math, Engineering, SAT/ACT
(( HIGHEST RATINGS!!! )) PARENTS: Bring the full weight of a PhD, as tutor, and student advocate. Hello Students! If you need help with mathematics, physics, or engineering, I'd be glad to help out.
With dedication, ever... | {"url":"http://www.wyzant.com/Folsom_PA_algebra_tutors.aspx","timestamp":"2014-04-18T01:50:09Z","content_type":null,"content_length":"58559","record_id":"<urn:uuid:aab5a987-8a66-48ec-b1ce-0666400440fe>","cc-path":"CC-MAIN-2014-15/segments/1397609532374.24/warc/CC-MAIN-20140416005212-00650-ip-10-147-4-33.ec2.internal.wa... |
• Almost Haskell98. See CB98,hs for the genuine Haskell98 version Here we use a few extensions to make the code prettier
• Embedding a higher-order domain-specific language (simply-typed * lambda-calculus with constants) with a selectable evaluation order: * Call-by-value, call-by-name, call-by-need
type Arr exp a b ... | {"url":"http://hackage.haskell.org/package/liboleg-2010.1.6/docs/Language-CBAny.html","timestamp":"2014-04-18T14:38:11Z","content_type":null,"content_length":"18881","record_id":"<urn:uuid:a0b624bf-ba3a-475c-9dce-30e5b5658105>","cc-path":"CC-MAIN-2014-15/segments/1397609533689.29/warc/CC-MAIN-20140416005213-00060-ip-10... |
st: mlogit, IIA test
From Dean Yang <dyang@fas.harvard.edu>
To statalist@hsphsun2.harvard.edu
Subject st: mlogit, IIA test
Date Mon, 14 Oct 2002 08:22:39 -0400
This question is about why I am getting strange results after running a Hausman-McFadden test for the IIA assumption after multinomial logit (-mlogit... | {"url":"http://www.stata.com/statalist/archive/2002-10/msg00303.html","timestamp":"2014-04-16T20:04:42Z","content_type":null,"content_length":"6454","record_id":"<urn:uuid:1093eaf4-ffe4-49f5-994d-e85963aa48ca>","cc-path":"CC-MAIN-2014-15/segments/1397609524644.38/warc/CC-MAIN-20140416005204-00025-ip-10-147-4-33.ec2.int... |
Is the point over my ray? Confusing...
05-27-2007 #1
I am trying to detect if my point (x & y) are over my ray (rayrot).
This is the best I could come up with, but it's not working. How should I do this?
if ( x > cos ( rayrot ) * y && y > sin ( rayrot ) * x )
Define "not working". Also, I'm not sure wha... | {"url":"http://cboard.cprogramming.com/cplusplus-programming/90278-point-over-my-ray-confusing.html","timestamp":"2014-04-16T13:44:33Z","content_type":null,"content_length":"89784","record_id":"<urn:uuid:28ada70a-c289-4268-b193-8ad5c2aff6ad>","cc-path":"CC-MAIN-2014-15/segments/1397609523429.20/warc/CC-MAIN-20140416005... |
Middleton, MA Math Tutor
Find a Middleton, MA Math Tutor
Recently left my position as a fourth grade teacher to be a stay-at-home mom, but would love to put my skills to good use on nights and weekends. I am familiar with the common core and text
materials used in the local school systems. Need help with Math?
13... | {"url":"http://www.purplemath.com/middleton_ma_math_tutors.php","timestamp":"2014-04-21T12:40:38Z","content_type":null,"content_length":"23701","record_id":"<urn:uuid:34473db3-cfbe-44d8-96b6-d341a46afd7a>","cc-path":"CC-MAIN-2014-15/segments/1398223202548.14/warc/CC-MAIN-20140423032002-00308-ip-10-147-4-33.ec2.internal... |
calculating the mode
Hi, i am trying to calculate the mode (most common) of an array of numbers. I also want to calculate the 2nd most common number etc until there are no number left. The code that i have written has no
errors but also doesn't do anything!!! can anyone help?
#! /usr/local/bin/perl -w
use strict;
my $n... | {"url":"http://www.perlmonks.org/?node_id=173059","timestamp":"2014-04-20T14:19:35Z","content_type":null,"content_length":"33073","record_id":"<urn:uuid:33327c8d-5252-4f32-b649-5badea192dcd>","cc-path":"CC-MAIN-2014-15/segments/1397609538787.31/warc/CC-MAIN-20140416005218-00559-ip-10-147-4-33.ec2.internal.warc.gz"} |
RE: st: Fixed Effects inconsistency between Correlation and Coefficient
Notice: On March 31, it was announced that Statalist is moving from an email list to a forum. The old list will shut down at the end of May, and its replacement, statalist.org is already up and
[Date Prev][Date Next][Thread Prev][Thread Next][Date ... | {"url":"http://www.stata.com/statalist/archive/2010-04/msg01018.html","timestamp":"2014-04-20T00:58:43Z","content_type":null,"content_length":"10202","record_id":"<urn:uuid:3bdc71ff-7a10-4967-9177-5f5917fdee44>","cc-path":"CC-MAIN-2014-15/segments/1397609537804.4/warc/CC-MAIN-20140416005217-00609-ip-10-147-4-33.ec2.int... |
Why Standard Deviation Should Be Retired From Scientific Use
55504079 story
Posted by
from the hope-it-gets-a-good-pension dept.
An anonymous reader writes
"Statistician and author Nassim Taleb has a suggestion for scientific researchers: stop trying to use standard deviations in your work. He says it's misundersto... | {"url":"http://science.slashdot.org/story/14/01/15/2126200/why-standard-deviation-should-be-retired-from-scientific-use/informative-comments","timestamp":"2014-04-16T07:35:04Z","content_type":null,"content_length":"327054","record_id":"<urn:uuid:d6ea64e3-04de-462b-9065-74cdb3f1d6c5>","cc-path":"CC-MAIN-2014-15/segments... |
Map Scales and Printing with Mapnik
Mapnik is a nice open source library for generating maps. The typical data source is OpenStreetMap style data stored in a PostgreSQL/PostGIS database. This post examines how to understand and control
the map scale and generate maps suitable for printing.
Map Scales
A map scale looks ... | {"url":"http://www.britishideas.com/2009/09/22/map-scales-and-printing-with-mapnik/","timestamp":"2014-04-16T19:06:14Z","content_type":null,"content_length":"68316","record_id":"<urn:uuid:09ab9d18-e812-4d6d-8332-261cb2165f7d>","cc-path":"CC-MAIN-2014-15/segments/1398223203422.8/warc/CC-MAIN-20140423032003-00657-ip-10-1... |
Meet the mother theory
This article is part of the Researching the unknown project, a collaboration with researchers from Queen Mary, University of London, bringing you the latest research on the forefront of physics.
Click here to read more articles from the project.
There's an old Indian story about six blind men who... | {"url":"http://plus.maths.org/content/mother-all-theories","timestamp":"2014-04-17T21:28:54Z","content_type":null,"content_length":"41685","record_id":"<urn:uuid:9a623f50-f5bf-47a3-8946-38f0674930b7>","cc-path":"CC-MAIN-2014-15/segments/1398223207985.17/warc/CC-MAIN-20140423032007-00562-ip-10-147-4-33.ec2.internal.warc... |
Proof Using Complex Variables
Next | Prev | Up | Top | Index | JOS Index | JOS Pubs | JOS Home | Search
To show by means of phasor analysis that Eq.A.2) always has a solution, we can express each component sinusoid as
Equation (A.2) therefore becomes
Thus, equality holds when we define
Since complex number, there is al... | {"url":"https://ccrma.stanford.edu/~jos/filters/Proof_Using_Complex_Variables.html","timestamp":"2014-04-21T03:56:07Z","content_type":null,"content_length":"9441","record_id":"<urn:uuid:283da315-0d40-4904-99c1-81242b1ebf90>","cc-path":"CC-MAIN-2014-15/segments/1397609539447.23/warc/CC-MAIN-20140416005219-00180-ip-10-14... |
Algebra help- Detailed Examples, Practice Problems, Videos and E-courses for Algebra 1
Your Step-by-Step Guide to Mastering Algebra 1
Do you feel stressed and frustrated with your Algebra work?
If you are feeling this way too, don't worry! All of your problems can be solved right here.
As a former teacher, I've created... | {"url":"http://www.algebra-class.com/index.html","timestamp":"2014-04-19T12:09:41Z","content_type":null,"content_length":"41699","record_id":"<urn:uuid:05a9a099-5ff2-46d5-a02c-aa6613179351>","cc-path":"CC-MAIN-2014-15/segments/1397609537186.46/warc/CC-MAIN-20140416005217-00176-ip-10-147-4-33.ec2.internal.warc.gz"} |
Accommodating Linkage Disequilibrium in Genetic-Association Analyses via Ridge Regression
• We are sorry, but NCBI web applications do not support your browser and may not function properly.
More information
Am J Hum Genet. Feb 8, 2008; 82(2): 375–385.
Accommodating Linkage Disequilibrium in Genetic-Association A... | {"url":"http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2427310/?tool=pubmed","timestamp":"2014-04-19T15:03:30Z","content_type":null,"content_length":"112731","record_id":"<urn:uuid:effd2348-4144-4b9e-bf47-005887aed344>","cc-path":"CC-MAIN-2014-15/segments/1397609537271.8/warc/CC-MAIN-20140416005217-00577-ip-10-147-4-33.ec... |
Electronic Research Announcements of the American Mathematical Society
Prescribing mean curvature: existence and uniqueness problems
Author: G. Kamberov
Journal: Electron. Res. Announc. Amer. Math. Soc. 4 (1998), 4-11
MSC (1991): Primary 53C42; Secondary 35Q40, 53A05, 53A30, 53A50, 58D10, 81Q05
Published electronically... | {"url":"http://www.ams.org/journals/era/1998-04-02/S1079-6762-98-00040-7/","timestamp":"2014-04-16T04:51:37Z","content_type":null,"content_length":"36342","record_id":"<urn:uuid:db05982e-2eaa-4efa-9182-10bc648bc9b5>","cc-path":"CC-MAIN-2014-15/segments/1397609521512.15/warc/CC-MAIN-20140416005201-00150-ip-10-147-4-33.e... |
Impulse Response, Fourier and Laplace Transforms, and Parseval's Relation
I need help resolving a contradiction relating the area under an impulse
response curve of a system and the system's frequency response.
According to Parseval's Relation the area under the impulse response must
equal the area under the impulse re... | {"url":"http://sci.tech-archive.net/Archive/sci.electronics.design/2006-09/msg01350.html","timestamp":"2014-04-20T13:20:48Z","content_type":null,"content_length":"11781","record_id":"<urn:uuid:26c990c4-933f-4408-955c-97627c4071fb>","cc-path":"CC-MAIN-2014-15/segments/1397609538787.31/warc/CC-MAIN-20140416005218-00111-i... |
Progression of the 3rd Year Oilers
The summer of 2010. Don’t you remember it like it happened yesterday? Ethan Moreau was waived, Sheldon Souray was sent to the minors, Patrick O’Sullivan revealed himself to be engaging in
intergalactic espionage… ah yes, heady days indeed. But at that moment, new hope was burbling up ... | {"url":"http://www.boysonthebus.com/2013/01/07/progression-of-the-3rd-year-oilers-4/","timestamp":"2014-04-17T04:04:00Z","content_type":null,"content_length":"21264","record_id":"<urn:uuid:9ad95bee-ed72-4fd1-8b64-40a76fe95ac3>","cc-path":"CC-MAIN-2014-15/segments/1397609526252.40/warc/CC-MAIN-20140416005206-00442-ip-10... |
Doron Zeilberger
Opinion 82: A Good Lemma is Worth a Thousand Theorems
By Doron Zeilberger
Written: Aug. 14, 2007.
Theorems are nice, but they are usually deadends. A lemma may be "trivial", or easy, to prove, once stated, but if it is good, its v... | {"url":"http://www.math.rutgers.edu/~zeilberg/Opinion82.html","timestamp":"2014-04-19T22:05:20Z","content_type":null,"content_length":"3688","record_id":"<urn:uuid:c5b38f2e-0cde-4994-a143-8075c4a9f27f>","cc-path":"CC-MAIN-2014-15/segments/1397609537754.12/warc/CC-MAIN-20140416005217-00501-ip-10-147-4-33.ec2.internal.wa... |
Conventions for definitions of the cap product
up vote 11 down vote favorite
In singular (co)homology, if $\alpha\in C^*(X)$ and $x\in C_*(X)$, then the cap product $\alpha \cap x$ is generally defined by the following process:
1. Apply to $x$ the diagonal map $C_*(X)\to C_*(X\times X)$ followed by some choice of Alex... | {"url":"http://mathoverflow.net/questions/36708/conventions-for-definitions-of-the-cap-product","timestamp":"2014-04-21T08:05:26Z","content_type":null,"content_length":"56458","record_id":"<urn:uuid:af277f35-a7f4-4699-b4e9-3756fc2f8308>","cc-path":"CC-MAIN-2014-15/segments/1398223206118.10/warc/CC-MAIN-20140423032006-0... |
A mighty Confusion!!!!
Please PLEASE read the following and solve this problem:
I am basically doing a frustrum of a cone, what i need to do in the question is re-arrange the volume for cone to make H the subject and substitute this H in the Surface area formula for cone. If u
get what i mean!!!!!!!!! Now the problem i... | {"url":"http://www.mathisfunforum.com/viewtopic.php?id=2100","timestamp":"2014-04-20T01:11:29Z","content_type":null,"content_length":"11095","record_id":"<urn:uuid:b2bf2a45-3bee-43d2-911b-1a91ead7e7c0>","cc-path":"CC-MAIN-2014-15/segments/1397609537804.4/warc/CC-MAIN-20140416005217-00534-ip-10-147-4-33.ec2.internal.war... |
Gary Rockswold • Terry Krieger • Meaningful Math
Mathematics has always had a profound impact on the development of our society, but this impact is accelerating at an amazing rate. Mathematics has been used in science and engineering for centuries,
but today mathematics is also being used to describe human behavior in ... | {"url":"http://www.garyrockswold.net/","timestamp":"2014-04-18T10:33:55Z","content_type":null,"content_length":"8728","record_id":"<urn:uuid:bacea470-46a3-47d2-bd41-3474dcf6418e>","cc-path":"CC-MAIN-2014-15/segments/1397609533308.11/warc/CC-MAIN-20140416005213-00003-ip-10-147-4-33.ec2.internal.warc.gz"} |
Mathematically, How Many Different Tweets Could There Ever Be?
There's only so much you can say in 140 paltry characters. So how many possible different tweets are there that could ever be sent?
Randall Munroe has tackled that very question in today's wonderful What If? post. First, a very crude approximation:
Twee... | {"url":"http://gizmodo.com/5986943/mathematically-how-many-different-tweets-could-there-ever-be?tag=words","timestamp":"2014-04-16T19:17:59Z","content_type":null,"content_length":"82860","record_id":"<urn:uuid:cd1a91da-bbd7-4cff-8eed-36e94704ecbc>","cc-path":"CC-MAIN-2014-15/segments/1397609524644.38/warc/CC-MAIN-20140... |
Lincolnwood Precalculus Tutor
Find a Lincolnwood Precalculus Tutor
...I regret to inform you I have little experience with K-6 and no experience working with special needs students.I completed the National Tutoring Association Tutoring Foundations courses (all
11). Many of these courses deal with study skills, such... | {"url":"http://www.purplemath.com/Lincolnwood_precalculus_tutors.php","timestamp":"2014-04-19T05:07:35Z","content_type":null,"content_length":"24370","record_id":"<urn:uuid:52587abc-bb40-485f-bcc5-7fcd868ff6f1>","cc-path":"CC-MAIN-2014-15/segments/1397609535775.35/warc/CC-MAIN-20140416005215-00012-ip-10-147-4-33.ec2.in... |
Number and Operation
= Preview Document = Member Document = Pin to Pinterest
Three pages mixing explanations and practice of square root, with a one page answer key.
A poster explaining the rules of division of negative numbers.
Three one page practice sets of long division problems with decimal points, 8 p... | {"url":"http://www.abcteach.com/directory/middle-school-junior-high-math-number-and-operation-3315-5-2","timestamp":"2014-04-16T13:15:07Z","content_type":null,"content_length":"44827","record_id":"<urn:uuid:464b631c-43f7-4ac7-9940-28825d358b76>","cc-path":"CC-MAIN-2014-15/segments/1398223211700.16/warc/CC-MAIN-20140423... |
Notes - bweaver
Adobe Acrobat Reader is required to read some of these files.
You can download the latest version for free from
My own notes
1. prob_hyp.pdf. Probability & hypothesis testing.
2. nonpar.pdf. Nonparametric (mostly rank-based) tests. Click here for further note concerning calculation of T for the Wilcox... | {"url":"https://sites.google.com/a/lakeheadu.ca/bweaver/Home/statistics/notes","timestamp":"2014-04-21T10:36:00Z","content_type":null,"content_length":"31920","record_id":"<urn:uuid:319ff8a3-a5ea-44d2-90ff-7d12e88b4956>","cc-path":"CC-MAIN-2014-15/segments/1397609539705.42/warc/CC-MAIN-20140416005219-00566-ip-10-147-4-... |
Characteristics of good algorithms, Data Structure & Algorithms
What do we mean by algorithm? What are the characteristics of a good and relevant algorithm?
An algorithm is "a step-by-step procedure for finishing some task'' An algorithm can be specified in many ways. For example, it can be written down in English (or ... | {"url":"http://www.expertsmind.com/questions/characteristics-of-good-algorithms-3016316.aspx","timestamp":"2014-04-20T18:24:21Z","content_type":null,"content_length":"30189","record_id":"<urn:uuid:413083a7-5c98-4635-ae0b-ce53b76a0f25>","cc-path":"CC-MAIN-2014-15/segments/1397609539066.13/warc/CC-MAIN-20140416005219-005... |
Finding a set of Parametric equation
December 9th 2009, 07:25 AM #1
Dec 2009
Find a set of parametric equation for the line passing through the points (2,3) and (6,-3).
this is an even number in my book and there are no examples in this section on how to find a parametric equation using two points.
1. T... | {"url":"http://mathhelpforum.com/pre-calculus/119548-finding-set-parametric-equation.html","timestamp":"2014-04-16T09:13:43Z","content_type":null,"content_length":"42604","record_id":"<urn:uuid:fedec574-3758-410e-b42b-6138c3ce02cc>","cc-path":"CC-MAIN-2014-15/segments/1397609521558.37/warc/CC-MAIN-20140416005201-00526-... |
Most of you have seen the nifty retirement software available from the likes of Vanguard and T. Rowe Price which provides the mathematical muscle to help you plan your retirement. Input your
retirement age, expected lifespan, required annual income, rate of inflation and investment return, and hey presto, you find ... | {"url":"http://www.efficientfrontier.com/ef/998/hell.htm","timestamp":"2014-04-21T04:58:12Z","content_type":null,"content_length":"10576","record_id":"<urn:uuid:03a98847-836b-4a08-8f49-4dcd6f577c6f>","cc-path":"CC-MAIN-2014-15/segments/1397609539493.17/warc/CC-MAIN-20140416005219-00591-ip-10-147-4-33.ec2.internal.warc.... |
£750.00 in american dollars
You asked:
£750.00 in american dollars
Say hello to Evi
Evi is our best selling mobile app that can answer questions about local knowledge, weather, books, music, films, people and places, recipe ideas, shopping and much more. Over the next few months we
will be adding all of Evi's power to ... | {"url":"http://www.evi.com/q/%C2%A3750.00_in_american_dollars","timestamp":"2014-04-19T12:21:34Z","content_type":null,"content_length":"55902","record_id":"<urn:uuid:703a0ad0-6f52-4a30-a432-ef33625f0506>","cc-path":"CC-MAIN-2014-15/segments/1397609537186.46/warc/CC-MAIN-20140416005217-00068-ip-10-147-4-33.ec2.internal.... |
Cross Product Property
cross product property
Definition of Cross Product Property
● Cross Product Property states that in a proportion, product of the means is equal to the product of the extremes.
● In the proportion b and c are the means and a and d are the extremes. So, as per the cross product, ad = bc.
Exampl... | {"url":"http://www.icoachmath.com/math_dictionary/Cross_Product_Property.html","timestamp":"2014-04-16T04:12:58Z","content_type":null,"content_length":"7673","record_id":"<urn:uuid:7c3bfd70-b391-49b6-823c-c25fd70fab02>","cc-path":"CC-MAIN-2014-15/segments/1397609521512.15/warc/CC-MAIN-20140416005201-00216-ip-10-147-4-3... |
Maya Geometry in the Classroom - Making a Right Angle the Maya Way
Making a Right Angle the Maya Way
According to his doctoral dissertation, Christopher Powell of the Maya Exploration Center observed modern Maya using the geometric fact that a rhombus with equal diagonals must be a square to make
sure the corners were ... | {"url":"http://www.maa.org/publications/periodicals/convergence/maya-geometry-in-the-classroom-making-a-right-angle-the-maya-way?device=mobile","timestamp":"2014-04-17T07:47:54Z","content_type":null,"content_length":"23587","record_id":"<urn:uuid:f2572605-fedc-477b-9376-f8657ee013a5>","cc-path":"CC-MAIN-2014-15/segment... |
Global Actions, Groupoid Atlases and Applications
A. Bak, R. Brown, G. Minian and T. Porter
Global actions were introduced by A. Bak to give a combinatorial approach to higher $K$-theory, in which control is kept of the elementary operations through paths and paths of paths. This paper is
intended as an introduction to... | {"url":"http://www.emis.de/journals/JHRS/volumes/2006/n1a5/abstract.htm","timestamp":"2014-04-20T16:23:17Z","content_type":null,"content_length":"1988","record_id":"<urn:uuid:fa48f02b-cac6-4db3-9af0-9922599f3c0a>","cc-path":"CC-MAIN-2014-15/segments/1397609538824.34/warc/CC-MAIN-20140416005218-00615-ip-10-147-4-33.ec2.... |
MathGroup Archive: April 2005 [00714]
[Date Index] [Thread Index] [Author Index]
Re: Re: (x-y) DiracDelta[x-y] does not simplify to 0
• To: mathgroup at smc.vnet.net
• Subject: [mg56361] Re: [mg56297] Re: (x-y) DiracDelta[x-y] does not si... | {"url":"http://forums.wolfram.com/mathgroup/archive/2005/Apr/msg00714.html","timestamp":"2014-04-19T00:01:06Z","content_type":null,"content_length":"37187","record_id":"<urn:uuid:e8e87fcc-4dad-42f3-b236-56cce61412c0>","cc-path":"CC-MAIN-2014-15/segments/1398223211700.16/warc/CC-MAIN-20140423032011-00184-ip-10-147-4-33.... |
A mighty Confusion!!!!
Please PLEASE read the following and solve this problem:
I am basically doing a frustrum of a cone, what i need to do in the question is re-arrange the volume for cone to make H the subject and substitute this H in the Surface area formula for cone. If u
get what i mean!!!!!!!!! Now the problem i... | {"url":"http://www.mathisfunforum.com/viewtopic.php?id=2100","timestamp":"2014-04-20T01:11:29Z","content_type":null,"content_length":"11095","record_id":"<urn:uuid:b2bf2a45-3bee-43d2-911b-1a91ead7e7c0>","cc-path":"CC-MAIN-2014-15/segments/1398223206120.9/warc/CC-MAIN-20140423032006-00534-ip-10-147-4-33.ec2.internal.war... |
Algebraic Integers as Chromatic and Domination Roots
International Journal of Combinatorics
Volumeย 2012ย (2012), Article IDย 780765, 8 pages
Research Article
Algebraic Integers as Chromatic and Domination Roots
^1Department of Mathematics, Yazd University, Yazd 89195-741, Iran
^2Department of Mathematics, Faculty of S... | {"url":"http://www.hindawi.com/journals/ijcom/2012/780765/","timestamp":"2014-04-17T22:31:55Z","content_type":null,"content_length":"306285","record_id":"<urn:uuid:be64c47b-2994-48f7-9e36-3ebc319a980d>","cc-path":"CC-MAIN-2014-15/segments/1398223205375.6/warc/CC-MAIN-20140423032005-00538-ip-10-147-4-33.ec2.internal.war... |
Zwiebach Letter to the WSJ
Over at his web-site, Lubos has posted a letter to the Wall Street Journal from Barton Zwiebach. The letter seriously misrepresents the current state of string theory in several ways:
string theory is an extraordinarily precise and rigorous framework where facts can be proven beyond doubt and... | {"url":"http://www.math.columbia.edu/~woit/wordpress/?p=423","timestamp":"2014-04-18T03:08:10Z","content_type":null,"content_length":"48175","record_id":"<urn:uuid:a1c0cfa1-64ee-4492-ba7d-d4de7779f087>","cc-path":"CC-MAIN-2014-15/segments/1397609532480.36/warc/CC-MAIN-20140416005212-00124-ip-10-147-4-33.ec2.internal.wa... |
Nonmonotone Methods for Backpropagation Training with Adaptive Learning Rate
Nonmonotone Methods for Backpropagation Training with Adaptive Learning Rate (1999)
Download Links
by V.P. Plagianako , M.N. Vrahatis
Venue: In: Proceedings of the IEEE International Joint Conference on Neural Networks (IJCNN'99), Washington D... | {"url":"http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.29.3918","timestamp":"2014-04-21T08:16:50Z","content_type":null,"content_length":"30591","record_id":"<urn:uuid:ab3986a2-178c-416c-ab4b-94d78277faca>","cc-path":"CC-MAIN-2014-15/segments/1397609539665.16/warc/CC-MAIN-20140416005219-00037-ip-10-147-4-33.ec2... |
Finitely Presented Groups
Finitely presented groups are constructed as quotients of free_group:
sage: F.<a,b,c> = FreeGroup()
sage: G = F / [a^2, b^2, c^2, a*b*c*a*b*c]
sage: G
Finitely presented group < a, b, c | a^2, b^2, c^2, (a*b*c)^2 >
One can create their elements by mutiplying the generators or by specifying a T... | {"url":"http://sagemath.org/doc/reference/groups/sage/groups/finitely_presented.html","timestamp":"2014-04-20T03:13:20Z","content_type":null,"content_length":"134190","record_id":"<urn:uuid:e769991b-8e0f-4be2-95d3-86dd91799ee6>","cc-path":"CC-MAIN-2014-15/segments/1398223207985.17/warc/CC-MAIN-20140423032007-00622-ip-1... |
RC Integrator - Java Experiment
The above circuit diagram illustrates a simple 'RC' integrator. This page provides a 'Java' experiment which you can use to explore its properties when the applied signal is a squarewave.
The red line shows the input waveform... | {"url":"http://www.st-andrews.ac.uk/~www_pa/Scots_Guide/experiment/integ/int.html","timestamp":"2014-04-19T17:05:42Z","content_type":null,"content_length":"4575","record_id":"<urn:uuid:fbdbf206-4330-41b1-845d-427b4a8bd48c>","cc-path":"CC-MAIN-2014-15/segments/1397609537308.32/warc/CC-MAIN-20140416005217-00549-ip-10-147... |
Class documentation: System.float
Class representing floating-point numbers.
Classes contained
• operator +(rhs): Adds two floating-point numbers together.
• operator -(rhs): Subtracts two floating-point numbers.
• operator *(rhs): Multiplies two floating-point numbers.
• operator /(rhs): Divides two floating-p... | {"url":"http://www.kite-language.org/docs/kdoc-1.0.4/System.float.html","timestamp":"2014-04-18T10:34:23Z","content_type":null,"content_length":"3627","record_id":"<urn:uuid:a7b2d9ec-dfea-4073-bf0a-2f83bcbd8ecb>","cc-path":"CC-MAIN-2014-15/segments/1397609533308.11/warc/CC-MAIN-20140416005213-00223-ip-10-147-4-33.ec2.i... |
[SciPy-user] curve_fit step-size and optimal parameters
Robert Kern robert.kern@gmail....
Mon Jun 8 15:19:43 CDT 2009
2009/6/8 Stéfan van der Walt <stefan@sun.ac.za>:
> 2009/6/8 Robert Kern <robert.kern@gmail.com>:
>> On Mon, Jun 8, 2009 at 14:59, ElMickerino<elmickerino@hotmail.com> wrote:
>>> My question is, how can ... | {"url":"http://mail.scipy.org/pipermail/scipy-user/2009-June/021411.html","timestamp":"2014-04-19T13:01:33Z","content_type":null,"content_length":"4280","record_id":"<urn:uuid:7f5a58cf-5256-4474-8714-27df34941919>","cc-path":"CC-MAIN-2014-15/segments/1398223206672.15/warc/CC-MAIN-20140423032006-00373-ip-10-147-4-33.ec2... |
Note: this is an addendum to the previous post, even if it should be self-contained, I felt that the post was already too long to add this, and that the topic was too important to be written as an
How big a point is? Infinitesimal? Well, for sure you can pack two of them as close as you want, up to your floating point ... | {"url":"http://c0de517e.blogspot.com/2008/10/just-blur.html","timestamp":"2014-04-16T10:10:28Z","content_type":null,"content_length":"98711","record_id":"<urn:uuid:df0831f2-295f-4d6e-8288-16509cf63c63>","cc-path":"CC-MAIN-2014-15/segments/1398223207985.17/warc/CC-MAIN-20140423032007-00579-ip-10-147-4-33.ec2.internal.wa... |
Here's the stuff we found when you searched for "SOCET SET"
• Jet Set Willy
• Connecting the NES Control Deck to your TV set
• How to set up a formal table
• swing set
• result set
• The Nodermeet On Which The Sun Never Sets - Sydney
• Everything2 is not a TV set!
• Did Aum Shinrikyo set off a nuclear b... | {"url":"http://everything2.com/title/SOCET+SET","timestamp":"2014-04-18T01:17:56Z","content_type":null,"content_length":"27862","record_id":"<urn:uuid:0ab5133c-6e3a-4a7c-91e5-eb6910e3903f>","cc-path":"CC-MAIN-2014-15/segments/1398223203235.2/warc/CC-MAIN-20140423032003-00328-ip-10-147-4-33.ec2.internal.warc.gz"} |
spherical coordinates
September 16th 2007, 11:55 PM
spherical coordinates
Use spherical coordinates to find the centroid of the solid in the first octant bounded by the coordinate planes and the sphere x^2 + y^2 + z^2 = a^2 .
Can you tell me, in the question, why x bar = y bar = z bar? Thank you very much.
Sept... | {"url":"http://mathhelpforum.com/calculus/19072-spherical-coordinates-print.html","timestamp":"2014-04-21T13:45:57Z","content_type":null,"content_length":"4241","record_id":"<urn:uuid:054389ac-2c36-48a3-9bb7-c18839728902>","cc-path":"CC-MAIN-2014-15/segments/1397609539776.45/warc/CC-MAIN-20140416005219-00064-ip-10-147-... |