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Linear Algebra/Vector Spaces
The first chapter began by introducing Gauss' method and finished with a fair understanding, keyed on the Linear Combination Lemma, of how it finds the solution set of a linear system. Gauss' method
systematically takes linear combinations of the rows. With that insight, we now move to a ge... | {"url":"https://en.m.wikibooks.org/wiki/Linear_Algebra/Vector_Spaces","timestamp":"2014-04-19T04:30:58Z","content_type":null,"content_length":"17989","record_id":"<urn:uuid:585f769d-18c2-4acc-a7d7-849fdb66dbb6>","cc-path":"CC-MAIN-2014-15/segments/1397609535775.35/warc/CC-MAIN-20140416005215-00562-ip-10-147-4-33.ec2.in... |
Distance between two points on the surface of a el
Dear all,
I want to calculate the ' great circle distance' between two points on the surface of an ellipsoid. Though because of the extra radius, the great circle distance is not what I am looking for. Also I
have not a center of the ellipsoid on [0,0,0], which makes t... | {"url":"http://www.mathworks.com/matlabcentral/newsreader/view_thread/281983","timestamp":"2014-04-24T02:00:17Z","content_type":null,"content_length":"42900","record_id":"<urn:uuid:e94b0cf1-d834-47d9-bb65-32f3200e0269>","cc-path":"CC-MAIN-2014-15/segments/1398223204388.12/warc/CC-MAIN-20140423032004-00548-ip-10-147-4-3... |
year 4 optional sats mental maths paper
• In the Year 7 and 8 Optional Tests more ...Condensed courses offered in: Maths Yes English ...[Of those who took] maths SATs [Key Stage3 ...
• This pdf remains the intellectual property of satspapers.org satspapers.org Year 4 Optional Test. Mental Mathematics Questions. Pra... | {"url":"http://www.doc-live.com/year-4-optional-sats-mental-maths-paper","timestamp":"2014-04-18T18:11:00Z","content_type":null,"content_length":"21604","record_id":"<urn:uuid:f13d38fd-8c7f-4452-835f-73493c1baedc>","cc-path":"CC-MAIN-2014-15/segments/1398223203841.5/warc/CC-MAIN-20140423032003-00055-ip-10-147-4-33.ec2.... |
Complexity of random knot with vertices on sphere
up vote 18 down vote favorite
Connect $n$ random points on a sphere in a cycle of segments between succesive points:
I would like to know the growth rate, with respect to $n$, of the crossing number (the minimal number of crossings of any diagram of the knot) $c(n)$ of ... | {"url":"http://mathoverflow.net/questions/54412/complexity-of-random-knot-with-vertices-on-sphere/54417","timestamp":"2014-04-19T15:11:28Z","content_type":null,"content_length":"81074","record_id":"<urn:uuid:c77e2ee9-e378-435b-8939-ccfe71cdb6a8>","cc-path":"CC-MAIN-2014-15/segments/1398223207046.13/warc/CC-MAIN-2014042... |
st: re: Efficient, foolproof calculation of matrix quadratic form with
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st: re: Efficient, foolproof calculation of matrix quadratic form with
From Kit Baum <baum@bc.edu>
To statalist@hsphsun2.harvard.edu
Subject st: re: Efficient, foolpr... | {"url":"http://www.stata.com/statalist/archive/2009-09/msg01049.html","timestamp":"2014-04-19T17:40:26Z","content_type":null,"content_length":"7380","record_id":"<urn:uuid:37b6560b-3535-4ddb-ab7f-ea3ab20adbe1>","cc-path":"CC-MAIN-2014-15/segments/1397609537308.32/warc/CC-MAIN-20140416005217-00406-ip-10-147-4-33.ec2.int... |
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7. Find the area of the rhombus. Leave your answer in simplest... | {"url":"http://openstudy.com/updates/51606822e4b06dc163b986e9","timestamp":"2014-04-17T19:30:44Z","content_type":null,"content_length":"81309","record_id":"<urn:uuid:19332d91-ab94-4b93-b1d1-2d881513d260>","cc-path":"CC-MAIN-2014-15/segments/1397609530895.48/warc/CC-MAIN-20140416005210-00466-ip-10-147-4-33.ec2.internal.... |
Slopes of Tangents and Secants 2
Sorry I'm pretty sure it said post a new thread for a different question....well here it is:
lim f(a + h) - f(a) / h
Use that forumla to find the slope of the tangent line of the cubic funciotn y = x^3 at the point (1,1)
This formula keeps messing me up. | {"url":"http://mathhelpforum.com/calculus/73394-slopes-tangents-secants-2-a.html","timestamp":"2014-04-19T00:37:34Z","content_type":null,"content_length":"40532","record_id":"<urn:uuid:3dd4c501-4483-4865-974d-46d038d7ffcf>","cc-path":"CC-MAIN-2014-15/segments/1397609537097.26/warc/CC-MAIN-20140416005217-00360-ip-10-147... |
What math comes after calculus and differential equations?
I know there is basic math, Algebra I, Intermediate Algebra, Geometry, Trigonometry, College Algebra, Statistics, Calculus I,II,III and then differential equations. What comes after differential
What are the different levels of math? There must be more math aft... | {"url":"http://mathhelponlinefree.net/what-math-comes-after-calculus-and-differential-equations/","timestamp":"2014-04-19T22:43:10Z","content_type":null,"content_length":"43685","record_id":"<urn:uuid:32b4b81e-71ed-4c86-899e-50a8cc6098fa>","cc-path":"CC-MAIN-2014-15/segments/1398223206672.15/warc/CC-MAIN-20140423032006... |
Ackerman function
04-26-2011, 10:29 AM
Ackerman function
I'm working on reading through the first chapter of SICP, I know this is not java, but I'm hoping it's fine to post this here, I know at least Jos has been through the book.
I'm having a bit of trouble tracing how it works. I get that it's a linear recurs... | {"url":"http://www.java-forums.org/forum-lobby/43053-ackerman-function-print.html","timestamp":"2014-04-19T06:58:01Z","content_type":null,"content_length":"24346","record_id":"<urn:uuid:fa56f416-cb52-408a-9813-8e800610c403>","cc-path":"CC-MAIN-2014-15/segments/1397609536300.49/warc/CC-MAIN-20140416005216-00423-ip-10-14... |
Hopkinton, MA Algebra 2 Tutor
Find a Hopkinton, MA Algebra 2 Tutor
...My name is Dan, and I love helping students to improve in Math and Science. I attended U.C. Santa Barbara, ranked 33rd in the World's Top 200 Universities (2013), and graduated with a degree
in Communication.
27 Subjects: including algebra 2, r... | {"url":"http://www.purplemath.com/Hopkinton_MA_Algebra_2_tutors.php","timestamp":"2014-04-18T21:36:21Z","content_type":null,"content_length":"23925","record_id":"<urn:uuid:1a32bdbd-5787-4ca8-a28b-987d287abe98>","cc-path":"CC-MAIN-2014-15/segments/1397609535095.9/warc/CC-MAIN-20140416005215-00027-ip-10-147-4-33.ec2.inte... |
Do partitions of unity exist if we impose additional conditions on the derivatives?
up vote 9 down vote favorite
Let $ ~~\cup_{k=-1}^{\infty} U_k = \mathbb{R} $ be an open covering of $\mathbb{R}$. It is a well known fact that partitions of unity subbordinate to the cover exists, i.e. there exists smooth
functions $ \v... | {"url":"http://mathoverflow.net/questions/141317/do-partitions-of-unity-exist-if-we-impose-additional-conditions-on-the-derivativ/141395","timestamp":"2014-04-20T03:47:32Z","content_type":null,"content_length":"67886","record_id":"<urn:uuid:f0e98c87-d24c-45d8-b280-0d05b63e91ce>","cc-path":"CC-MAIN-2014-15/segments/1397... |
Re: GR or QED?
David Bowman (dbowman@tiger.gtc.georgetown.ky.us)
Wed, 29 Apr 1998 13:21:11 EDT
Concerning Glenn's comments about his source (H. Ross) for the claim that
GR is the most precisely confirmed theory:
> I was corrected by both George Murphy and David Bowman when I said that GR
> was the best confirmed theory... | {"url":"http://www2.asa3.org/archive/asa/199804/0456.html","timestamp":"2014-04-18T21:32:54Z","content_type":null,"content_length":"6963","record_id":"<urn:uuid:fa1d3879-463e-4d11-9938-2e660b88c1fd>","cc-path":"CC-MAIN-2014-15/segments/1398223202457.0/warc/CC-MAIN-20140423032002-00208-ip-10-147-4-33.ec2.internal.warc.g... |
How do I find an orthogonality condition for the Laguerre polynomials weighed by some particular n and x dependent phase factors? (self.math)
submitted ago by x3nodox
sorry, this has been archived and can no longer be voted on
That is to say, how do I find some [; w(x) ;] such that [; \int dx \; w(x)\; L_n(x)\; L_m(x)\... | {"url":"http://www.reddit.com/r/math/comments/1akufc/how_do_i_find_an_orthogonality_condition_for_the/","timestamp":"2014-04-21T00:02:14Z","content_type":null,"content_length":"57730","record_id":"<urn:uuid:14781e86-5d20-46ce-95bd-79bbe778ce55>","cc-path":"CC-MAIN-2014-15/segments/1397609539337.22/warc/CC-MAIN-20140416... |
i want help in problem
Whats the problem? What parts do you need help with in particular? The descriptive you are, tje better we can help.
First, if this problem is really of interest to you, it would have looked better, and perhaps encouraged more people to respond, if you had taken the trouble to type the problem in ... | {"url":"http://mathhelpforum.com/algebra/155135-i-want-help-problem.html","timestamp":"2014-04-17T03:01:03Z","content_type":null,"content_length":"39214","record_id":"<urn:uuid:017b27e8-cc71-4870-857e-ec5b325a8bc5>","cc-path":"CC-MAIN-2014-15/segments/1397609526102.3/warc/CC-MAIN-20140416005206-00084-ip-10-147-4-33.ec2... |
Weil reciprocity law
Weil reciprocity law
Weil reciprocity is a theorem of André Weil about the quotient field $K(C)$ of an algebraic curve $C$ over an algebraically closed field $K$.
The following 2 articles make parallel between some notions of QFT and of number theory and in particular about the analogy between the ... | {"url":"http://ncatlab.org/nlab/show/Weil+reciprocity+law","timestamp":"2014-04-17T07:30:17Z","content_type":null,"content_length":"12973","record_id":"<urn:uuid:dc9fce90-5a9b-437a-b0fa-613a17db13a2>","cc-path":"CC-MAIN-2014-15/segments/1397609526311.33/warc/CC-MAIN-20140416005206-00491-ip-10-147-4-33.ec2.internal.warc... |
What do these new symbols mean...?I can't start this without knowing
Ok, good. So you see how k isn't a variable you can really mess with, right? It takes on the values 0 to n just to generate the terms in the sum. In fact, when you expand the sum out, there is no k
appearing anymore because it was just a dummy variabl... | {"url":"http://www.physicsforums.com/showthread.php?t=531143&page=5","timestamp":"2014-04-18T08:28:25Z","content_type":null,"content_length":"49160","record_id":"<urn:uuid:81604768-8db5-4f4e-b5ea-8824faf5df45>","cc-path":"CC-MAIN-2014-15/segments/1397609533121.28/warc/CC-MAIN-20140416005213-00636-ip-10-147-4-33.ec2.int... |
Physics..=> drwls - I need your help
Posted by ~christina~ on Tuesday, February 26, 2008 at 10:26pm.
I need help seeing if my thoughts are correct and how to do some things.
Block 1 of mass 0.200 kg is sliding to the right over a frictionless elevated surface at a speed of 8.00 m / s. The block undergoes an elastic col... | {"url":"http://www.jiskha.com/display.cgi?id=1204082782","timestamp":"2014-04-24T07:32:40Z","content_type":null,"content_length":"13968","record_id":"<urn:uuid:94cec4aa-489b-4658-a416-a6f0381341d6>","cc-path":"CC-MAIN-2014-15/segments/1398223205375.6/warc/CC-MAIN-20140423032005-00028-ip-10-147-4-33.ec2.internal.warc.gz... |
FTC2 - Not sure how to deal with this one
March 31st 2011, 07:13 PM
FTC2 - Not sure how to deal with this one
Find g'(x) by using Part 2 of the Fundamental Theorem of Calculus.
$g(x) = \int^x_0 (1+\sqrt{t})dt$
Here is what I have done so far:
$g(x) = t + \frac{1}{2\sqrt{t}}]^x_0$
$g(x) = x + \frac{1... | {"url":"http://mathhelpforum.com/calculus/176484-ftc2-not-sure-how-deal-one-print.html","timestamp":"2014-04-16T14:02:48Z","content_type":null,"content_length":"6559","record_id":"<urn:uuid:b7c5631e-2ebe-492a-b139-c9a184952824>","cc-path":"CC-MAIN-2014-15/segments/1397609523429.20/warc/CC-MAIN-20140416005203-00300-ip-1... |
Clock Class HELP
11-04-2006 #1
Is Trying to Learn
Join Date
Mar 2006
Hutton, Preston
Clock Class HELP
hi i have a problem with another class problem.
i have this code so far but i am getting a few problems
1] it comes up with 2 times and i dont want that
2] i would like it so output seconds
... | {"url":"http://cboard.cprogramming.com/cplusplus-programming/84965-clock-class-help.html","timestamp":"2014-04-19T18:02:01Z","content_type":null,"content_length":"50906","record_id":"<urn:uuid:1c52edba-3af9-40e0-b17f-2e82011e273a>","cc-path":"CC-MAIN-2014-15/segments/1397609537754.12/warc/CC-MAIN-20140416005217-00187-i... |
East Orange Algebra 1 Tutor
Find an East Orange Algebra 1 Tutor
...I am currently working on my business part time so I took up tutoring again because I enjoy it and it comes easy to me. I have references available upon request. I am available during the
week, afternoons or evenings.
10 Subjects: including algebr... | {"url":"http://www.purplemath.com/East_Orange_algebra_1_tutors.php","timestamp":"2014-04-21T13:01:36Z","content_type":null,"content_length":"24105","record_id":"<urn:uuid:c82b15f1-81ad-4cdc-af98-ba91988593cd>","cc-path":"CC-MAIN-2014-15/segments/1397609539776.45/warc/CC-MAIN-20140416005219-00051-ip-10-147-4-33.ec2.inte... |
Composing two-term sums from the same primes
up vote 7 down vote favorite
The following is an old result of Erdős and Turán (American Mathematical Monthly, 1934):
Given a set of $2^n + 1$ distinct positive integers, all of its two-term sums cannot be composed of the same $n$ primes. (An integer $m$ is said to be compos... | {"url":"http://mathoverflow.net/questions/129645/composing-two-term-sums-from-the-same-primes","timestamp":"2014-04-20T03:35:55Z","content_type":null,"content_length":"53063","record_id":"<urn:uuid:43e6a98e-49bf-4ba5-af29-f07977c80756>","cc-path":"CC-MAIN-2014-15/segments/1397609537864.21/warc/CC-MAIN-20140416005217-00... |
Math 3rd grade | Digital clock reading: How much later? 10 to and 5 past, etc., max. difference 6 hours
3rd Grade: Digital clock reading: How much later? 10 to and 5 past, etc., max. difference 6 hours
You need to enable javascript for this exercise to work.
The answer you've given is incorrect:
The correct answer is: | {"url":"http://www.mathabc.com/math-3rd-grade/time/digital-clock-reading-how-much-later-10-to-and-5-past-etc-max-difference-6-hours/id/216","timestamp":"2014-04-18T11:36:22Z","content_type":null,"content_length":"26115","record_id":"<urn:uuid:49e586f2-1367-4e8d-b99f-72086787bd06>","cc-path":"CC-MAIN-2014-15/segments/13... |
Level set examples
Example 1
Let $f(x,y) = x^2-y^2$. We will study the level curves $c=x^2-y^2$.
First, look at the case $c=0$. The level curve equation $x^2-y^2=0$ factors to $(x-y)(x+y)=0$. This equation is satisfied if either $y=x$ or $y=-x$. Both these are equations for lines, so the level
curve for $c=0$ is two li... | {"url":"http://mathinsight.org/level_set_examples","timestamp":"2014-04-17T06:43:42Z","content_type":null,"content_length":"22328","record_id":"<urn:uuid:5b6a9afb-791c-49e4-9a93-d32417e21436>","cc-path":"CC-MAIN-2014-15/segments/1398223206770.7/warc/CC-MAIN-20140423032006-00171-ip-10-147-4-33.ec2.internal.warc.gz"} |
The HoTT book is finished!
Since spring, and even before that, I have participated in a great collaborative effort on writing a book on Homotopy Type Theory. It is finally finished and ready for public consumption. You can get
the book freely at http://homotopytypetheory.org/book/. Mike Shulman has written about the co... | {"url":"http://audrey.fmf.uni-lj.si/hott.html","timestamp":"2014-04-19T14:29:34Z","content_type":null,"content_length":"8213","record_id":"<urn:uuid:924ec3b4-b7da-42f6-81ca-6eea8af8b98e>","cc-path":"CC-MAIN-2014-15/segments/1397609537271.8/warc/CC-MAIN-20140416005217-00310-ip-10-147-4-33.ec2.internal.warc.gz"} |
Finding unknown integer-valued polynomials using inequalities
up vote 5 down vote favorite
I've come across this interesting inequalities problem recently, which seemed straight-forward at first glance but has proven interesting enough to ask about it here.
Suppose you are given the degree of an unknown polynomial, and... | {"url":"http://mathoverflow.net/questions/13701/finding-unknown-integer-valued-polynomials-using-inequalities","timestamp":"2014-04-19T15:25:20Z","content_type":null,"content_length":"62989","record_id":"<urn:uuid:7a5b92f5-0e6d-47b5-be4f-28e98b1e5589>","cc-path":"CC-MAIN-2014-15/segments/1397609537271.8/warc/CC-MAIN-20... |
Braingle: 'Find the Sum' Brain Teaser
Find the Sum
Math brain teasers require computations to solve.
Puzzle ID: #39976
Category: Math
Submitted By: shenqiang
Find the sum of all prime numbers between 1 and 100 that are simultaneously 1 greater than a multiple of 4 and 1 less than a multiple of 5.
Numbers ... | {"url":"http://www.braingle.com/brainteasers/teaser.php?id=39976&op=2&comm=1","timestamp":"2014-04-21T12:25:17Z","content_type":null,"content_length":"24679","record_id":"<urn:uuid:0d62febe-424d-4a3b-ad1d-4b352150d84d>","cc-path":"CC-MAIN-2014-15/segments/1398223206647.11/warc/CC-MAIN-20140423032006-00039-ip-10-147-4-3... |
The 10 gallon hat.
November 19th 2010, 04:40 PM #1
Jul 2010
The 10 gallon hat.
anyway i was telling my friend a riddle about a dude who just bought a 10 gallon hat but its really 6 gallons and all this determining of its real volume but he interrupted me and claimed that no
one can have a 10 gallon hate bec... | {"url":"http://mathhelpforum.com/math-topics/163787-10-gallon-hat.html","timestamp":"2014-04-17T11:21:54Z","content_type":null,"content_length":"43931","record_id":"<urn:uuid:0ef5a0bc-0268-4026-a898-53927bfc4669>","cc-path":"CC-MAIN-2014-15/segments/1397609527423.39/warc/CC-MAIN-20140416005207-00182-ip-10-147-4-33.ec2.... |
About Sectional Curvature
up vote 5 down vote favorite
In a paper by Yann Ollivier:
Let $x$ be a point in $X$, $v$ a small tangent vector at $x$, $y$ the endpoint of $v$, $w_x$ a small tangent vector at $x$, and $w_y$ the parallel transport of $w_x$ from $x$ to $y$ along $v$. If,
instead of a Riemannian manifold, we we... | {"url":"http://mathoverflow.net/questions/127072/about-sectional-curvature?answertab=votes","timestamp":"2014-04-19T22:30:44Z","content_type":null,"content_length":"50602","record_id":"<urn:uuid:2c533ebb-ccce-473d-8b28-77487aa50e25>","cc-path":"CC-MAIN-2014-15/segments/1397609537754.12/warc/CC-MAIN-20140416005217-00043... |
More Grumbine Science
The subject line is close to a recent search query that lead someone here, and echoes a comment that's not unusual in blog comment sections. The thing about it is, it's not a very
strong question
One part of the question's failure is that it isn't really a proper statistical question. Given limits... | {"url":"http://moregrumbinescience.blogspot.com/2009_06_01_archive.html","timestamp":"2014-04-19T22:06:32Z","content_type":null,"content_length":"143493","record_id":"<urn:uuid:621d42ac-9a02-48db-866f-005a979867b5>","cc-path":"CC-MAIN-2014-15/segments/1397609537754.12/warc/CC-MAIN-20140416005217-00189-ip-10-147-4-33.ec... |
The most serious caveat remains the fact that large M/L ratios do not uniquely imply a BH. Only step 1 of the BH search - the detection of an MDO - is nearing completion. We cannot exclude the
possibility that galaxies contain central clusters of stellar remnants or brown dwarf stars. However, old stellar populations h... | {"url":"http://ned.ipac.caltech.edu/level5/Kormendy/Kormendy4.html","timestamp":"2014-04-16T19:14:53Z","content_type":null,"content_length":"83492","record_id":"<urn:uuid:3d0d2909-cda5-48c6-ad44-07f39c050bf8>","cc-path":"CC-MAIN-2014-15/segments/1398223207046.13/warc/CC-MAIN-20140423032007-00036-ip-10-147-4-33.ec2.inte... |
bool behavior in Python 3000?
Steven Bethard steven.bethard at gmail.com
Tue Jul 10 21:13:38 CEST 2007
Alan G Isaac wrote:
> > Do you care to explain what is broken?
> I suppose one either finds coercion of arithmetic operations to int
> to be odd/broken or does not. But that's all I meant.
> My preference would be f... | {"url":"https://mail.python.org/pipermail/python-list/2007-July/427976.html","timestamp":"2014-04-17T12:57:58Z","content_type":null,"content_length":"3619","record_id":"<urn:uuid:a0dcbeae-0fdd-46d0-afa9-0658e1290563>","cc-path":"CC-MAIN-2014-15/segments/1397609530131.27/warc/CC-MAIN-20140416005210-00193-ip-10-147-4-33.... |
S^n\{x} isomorphic to R^n
Could someone please tell me why is $S^n-{x}$ isomorphic to $\mathbb{R}^n$? Thank you so much.
Well, that depends on your notation. The one I have seen the most is $\mathbb{S} ^n = \{ x\in \mathbb{R} ^{n+1} : \Vert x \Vert =1 \}$ in which case it is indeed true that $\mathbb{S} ^n \setminus
{e... | {"url":"http://mathhelpforum.com/differential-geometry/115874-s-n-x-isomorphic-r-n.html","timestamp":"2014-04-20T21:13:55Z","content_type":null,"content_length":"39445","record_id":"<urn:uuid:e9b29cca-81b2-435c-9ed6-11b12f7bbd05>","cc-path":"CC-MAIN-2014-15/segments/1397609539230.18/warc/CC-MAIN-20140416005219-00347-ip... |
Example for column rank $\neq$ row rank
up vote 12 down vote favorite
The proof that column rank = row rank for matrices over a field relies on the fact that the elements of a field commute. I'm looking for an easy example of a matrix over a ring for which column rank
$\neq$ row rank. i.e. can one find a $2 \times 3$-(... | {"url":"https://mathoverflow.net/questions/47369/example-for-column-rank-neq-row-rank","timestamp":"2014-04-25T05:12:36Z","content_type":null,"content_length":"58728","record_id":"<urn:uuid:7132a749-0cf4-4841-bd6a-05d3a37450ce>","cc-path":"CC-MAIN-2014-15/segments/1398223210034.18/warc/CC-MAIN-20140423032010-00127-ip-1... |
Planck Curve
Planck Curve:
The quantum theory of absorption and emission of radiation announced in 1900 by Planck ushered in the era of modern physics. He proposed that all material systems can absorb or give off
electromagnetic radiation only in "chunks" of energy, quanta E, and that these are proportional to the freq... | {"url":"http://abyss.uoregon.edu/~js/glossary/planck_curve.html","timestamp":"2014-04-20T00:38:02Z","content_type":null,"content_length":"4849","record_id":"<urn:uuid:ac6ab5ea-4f62-4397-913f-0f234ea7931c>","cc-path":"CC-MAIN-2014-15/segments/1397609537804.4/warc/CC-MAIN-20140416005217-00572-ip-10-147-4-33.ec2.internal.... |
Summary: BLACK-SCHOLES GOES HYPERGEOMETRIC
ABSTRACT. We introduce a general pricing formula that extends Black-Scholes' and contains as particular
cases most analytically solveable models in the literature, including the quadratic and the constant-elasticity-
of-variance (CEV) models for European and barrier options. I... | {"url":"http://www.osti.gov/eprints/topicpages/documents/record/619/1169417.html","timestamp":"2014-04-18T11:43:30Z","content_type":null,"content_length":"8963","record_id":"<urn:uuid:ed752a55-5219-4aa7-93b0-97e26ffc9efb>","cc-path":"CC-MAIN-2014-15/segments/1397609533308.11/warc/CC-MAIN-20140416005213-00090-ip-10-147-... |
can Matlab computer the characterisitc polynomial?
April 22nd 2010, 11:21 AM #1
Senior Member
Jun 2009
can Matlab computer the characterisitc polynomial?
Given a matrix, can Matlab computer the characteristic polynomial? If no can it computer a determinant with a $\lambda$ in it?
Compute determinant of symb... | {"url":"http://mathhelpforum.com/math-software/140747-can-matlab-computer-characterisitc-polynomial.html","timestamp":"2014-04-20T00:29:39Z","content_type":null,"content_length":"33529","record_id":"<urn:uuid:5394193f-2119-4e60-ac6a-f67430083dc1>","cc-path":"CC-MAIN-2014-15/segments/1397609537754.12/warc/CC-MAIN-201404... |
Reviews: Math Curse by Jon Scieszka
Math Curse is about how math really is everywhere in our lives. The book takes everyday things like milk for your cereal and shows how many math problems you can get from one item: Quarts in a gallon
etc. Everywhere the main character looks, a math problem is there. Some of the math ... | {"url":"http://www.librarything.com/work/121568/reviews/84894769","timestamp":"2014-04-20T17:28:21Z","content_type":null,"content_length":"75199","record_id":"<urn:uuid:6741aced-061d-45a1-a4a8-185ba97df0be>","cc-path":"CC-MAIN-2014-15/segments/1397609538824.34/warc/CC-MAIN-20140416005218-00634-ip-10-147-4-33.ec2.intern... |
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Topic: mathcounts no-trig question
Replies: 7 Last Post: Jan 10, 2012 11:35 AM
Messages: [ Previous | N... | {"url":"http://mathforum.org/kb/thread.jspa?threadID=2330477","timestamp":"2014-04-16T17:32:09Z","content_type":null,"content_length":"25886","record_id":"<urn:uuid:cbec341f-138c-4d48-9089-ce372f4a109b>","cc-path":"CC-MAIN-2014-15/segments/1397609530131.27/warc/CC-MAIN-20140416005210-00350-ip-10-147-4-33.ec2.internal.w... |
Math Goes Pop!
Hi all,
This weekend’s Father’s Day celebrations have inspired my monthly article over at the CNN Light Years blog. Here’s a sample:
There are many misconceptions about mathematicians in popular culture. For example, windows and mirrors do not make for the best writing surfaces, despite what you might as... | {"url":"http://www.mathgoespop.com/tag/fathers-day","timestamp":"2014-04-19T19:54:32Z","content_type":null,"content_length":"68694","record_id":"<urn:uuid:6064a4c3-f9b1-4094-9ab1-eb786853b323>","cc-path":"CC-MAIN-2014-15/segments/1398223203841.5/warc/CC-MAIN-20140423032003-00552-ip-10-147-4-33.ec2.internal.warc.gz"} |
TR12-173 | 8th December 2012 23:46
A Cookbook for Black-Box Separations and a Recipe for UOWHFs
We present a new framework for proving fully black-box
separations and lower bounds. We prove a general theorem that facilitates
the proofs of fully black-box lower bounds from a one-way function (OWF).
Loosely speaking, our... | {"url":"http://eccc.hpi-web.de/report/2012/173/","timestamp":"2014-04-18T21:13:50Z","content_type":null,"content_length":"20386","record_id":"<urn:uuid:48526238-d5ee-406c-84aa-539510fbe5c6>","cc-path":"CC-MAIN-2014-15/segments/1397609535095.9/warc/CC-MAIN-20140416005215-00656-ip-10-147-4-33.ec2.internal.warc.gz"} |
188 helpers are online right now
75% of questions are answered within 5 minutes.
is replying to Can someone tell me what button the professor is hitting...
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Thanks... | {"url":"http://openstudy.com/users/__assassin__/answered","timestamp":"2014-04-17T01:46:05Z","content_type":null,"content_length":"108494","record_id":"<urn:uuid:25292ab9-3071-4e45-82f6-a27abfe5514d>","cc-path":"CC-MAIN-2014-15/segments/1398223206770.7/warc/CC-MAIN-20140423032006-00546-ip-10-147-4-33.ec2.internal.warc.... |
Is the function 1/|x+y| a joint probability density function?
April 10th 2009, 10:19 AM
Is the function 1/|x+y| a joint probability density function?
Is the function $\frac{1}{|x+y|}$ a joint probability density function? That is, is $\int\hspace{-6pt}\int_{\mathbb{R}^2} \frac{1}{|x+y|} \ dA$ equal to 1 and is $\fr... | {"url":"http://mathhelpforum.com/calculus/83135-function-1-x-y-joint-probability-density-function-print.html","timestamp":"2014-04-23T20:53:13Z","content_type":null,"content_length":"6122","record_id":"<urn:uuid:591121bf-dffe-4385-b402-dc23a52055a0>","cc-path":"CC-MAIN-2014-15/segments/1398223203422.8/warc/CC-MAIN-2014... |
Plainfield, IL Statistics Tutor
Find a Plainfield, IL Statistics Tutor
...Generally, I ask that students email me questions with which they need help before we meet, just in case I need to review that particular material. I have taught many finance course at
Northwestern University's School for Continuing Studies s... | {"url":"http://www.purplemath.com/Plainfield_IL_statistics_tutors.php","timestamp":"2014-04-16T22:35:03Z","content_type":null,"content_length":"24359","record_id":"<urn:uuid:7edbe5c9-b890-4f40-a8de-338ecfd9303f>","cc-path":"CC-MAIN-2014-15/segments/1397609525991.2/warc/CC-MAIN-20140416005205-00566-ip-10-147-4-33.ec2.in... |
Secondary Math and Science Education
Secondary Math and Science Education: Hearing Before the Subcommittee on Science, Research, and Technology of the Committee on Science and Technology, U.S. House of Representatives, Ninety-seventh
Congress, Second Session, May 7, 1982
U.S. Government Printing Office
, 1983 -
127 pag... | {"url":"http://books.google.com/books?id=LPN7gzxkja8C&q=elementary&source=gbs_word_cloud_r&cad=5","timestamp":"2014-04-16T10:34:36Z","content_type":null,"content_length":"99884","record_id":"<urn:uuid:766d9fe0-af5f-4a9d-a494-0f2a0bb479dd>","cc-path":"CC-MAIN-2014-15/segments/1397609523265.25/warc/CC-MAIN-20140416005203... |
Forget passwords, tricky sums are more secure
Faster, more secure logins for multimedia sites might be possible thanks to a new approach to website and database security. Boolean logins would allow thousands if not millions of users to more
quickly access the content to which they are entitled, such as music, video an... | {"url":"http://www.sciencetext.com/forget-passwords-tricky-sums-are-more-secure.html","timestamp":"2014-04-16T13:10:29Z","content_type":null,"content_length":"71214","record_id":"<urn:uuid:ec41d022-ec3c-4ab2-905d-6f82d90eb48d>","cc-path":"CC-MAIN-2014-15/segments/1398223207985.17/warc/CC-MAIN-20140423032007-00491-ip-10... |
NAG Library
NAG Library Routine Document
Note: this routine uses optional parameters to define choices in the problem specification. If you wish to use
settings for all of the optional parameters, then this routine need not be called. If, however, you wish to reset some or all of the settings please refer to Section 10... | {"url":"http://www.nag.com/numeric/FL/nagdoc_fl24/html/F12/f12adf.html","timestamp":"2014-04-18T11:14:45Z","content_type":null,"content_length":"50246","record_id":"<urn:uuid:d08675a8-d6aa-4740-bee2-00e9195632cf>","cc-path":"CC-MAIN-2014-15/segments/1397609533308.11/warc/CC-MAIN-20140416005213-00548-ip-10-147-4-33.ec2.... |
Ruby: Creating destructive methods.
Here's a basic example of using Ruby to create a class with destructive methods. Though this is not as practical as just typing the actual mathematic operations themselves. It does illustrate how
destructive functions work and how to write them. Note the 'return self' in each of th... | {"url":"http://www.donttrustthisguy.com/2005/12/30/ruby-creating-destructive-methods","timestamp":"2014-04-18T02:58:13Z","content_type":null,"content_length":"4510","record_id":"<urn:uuid:3b8dea1f-95f4-407a-968e-9609eeadca19>","cc-path":"CC-MAIN-2014-15/segments/1397609532480.36/warc/CC-MAIN-20140416005212-00084-ip-10-... |
Larkspur, CA Trigonometry Tutor
Find a Larkspur, CA Trigonometry Tutor
...I took the CBEST on 08/21/10 and achieved a total passing score of 217. Specific section scores include: Reading - Scaled Score: 77; Mathematics - Scaled Score: 65; Writing - Scaled Score: 75.
I teach Genetics every year as part of my Biology... | {"url":"http://www.purplemath.com/Larkspur_CA_trigonometry_tutors.php","timestamp":"2014-04-17T20:04:52Z","content_type":null,"content_length":"24243","record_id":"<urn:uuid:c94e2278-e99c-44e1-b1eb-b19c2f93a8ac>","cc-path":"CC-MAIN-2014-15/segments/1398223207046.13/warc/CC-MAIN-20140423032007-00125-ip-10-147-4-33.ec2.i... |
artificial intelligence
Archive for the ‘topics in artificial intelligence’ Category
I hadn’t heard of Biomorphs until I started wandering through The Magic Machine: A Handbook of Computer Sorcery
[ z = z^3 + c]
[ z = sin(z) + z^2 + c ]
Biomorphs were discovered by Clifford Pickover at the IBM Research Center. Biomorph... | {"url":"http://herselfsai.com/category/topics-in-artificial-intelligence/page/2","timestamp":"2014-04-20T13:18:56Z","content_type":null,"content_length":"33619","record_id":"<urn:uuid:ffca218d-9104-40db-9d9e-f67bc6d929da>","cc-path":"CC-MAIN-2014-15/segments/1397609538787.31/warc/CC-MAIN-20140416005218-00614-ip-10-147-... |
Cumming, GA Geometry Tutor
Find a Cumming, GA Geometry Tutor
...I have always enjoyed geography ever since I was in Elementary and participated in the school's geography competition. I have 21 hours of college level coursework with 8 years accounting work
experience. I took several Economic classes during my Underg... | {"url":"http://www.purplemath.com/Cumming_GA_Geometry_tutors.php","timestamp":"2014-04-21T05:18:43Z","content_type":null,"content_length":"24023","record_id":"<urn:uuid:e863c15d-6e2a-4765-93b1-393231966f18>","cc-path":"CC-MAIN-2014-15/segments/1397609539493.17/warc/CC-MAIN-20140416005219-00318-ip-10-147-4-33.ec2.intern... |
First-hitting-time problem
A hitting time is the time when a system described by a random process first crosses a certain threshold, like the Earth’s climate when it makes a transition from one locally stable state to another
locally stable state, from today’s climate to a climate closer to Snowball Earth, for example.... | {"url":"http://www.azimuthproject.org/azimuth/show/First-hitting-time+problem","timestamp":"2014-04-17T18:57:08Z","content_type":null,"content_length":"31380","record_id":"<urn:uuid:eedcd330-edd6-4172-a862-1130c5190594>","cc-path":"CC-MAIN-2014-15/segments/1398223206118.10/warc/CC-MAIN-20140423032006-00109-ip-10-147-4-... |
Project Euler 105: Find the sum of the special sum sets | MathBlog
Project Euler 105: Find the sum of the special sum sets in the file.
Written by Kristian on 14 July 2012
Topics: Project Euler
Problem 105 of Project Euler is closely related to Problem 103 as has been mentioned in both problem descriptions. The probl... | {"url":"http://www.mathblog.dk/project-euler-105-sum-special-sum-sets-file/","timestamp":"2014-04-19T01:58:09Z","content_type":null,"content_length":"41023","record_id":"<urn:uuid:4d6915fc-0fc5-42fa-a307-0586aa73a16d>","cc-path":"CC-MAIN-2014-15/segments/1398223206672.15/warc/CC-MAIN-20140423032006-00106-ip-10-147-4-33... |
Mapping Human Whole-Brain Structural Networks with Diffusion MRI
Understanding the large-scale structural network formed by neurons is a major challenge in system neuroscience. A detailed connectivity map covering the entire brain would therefore be of great
value. Based on diffusion MRI, we propose an efficient method... | {"url":"http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0000597","timestamp":"2014-04-20T23:02:51Z","content_type":null,"content_length":"187872","record_id":"<urn:uuid:5ffa5f11-260c-4068-bf30-a7d061b6cc58>","cc-path":"CC-MAIN-2014-15/segments/1397609539230.18/warc/CC-MAIN-20140416005219-00332-ip-10-... |
MEANDEV estimates the Mean deviation
function R = meandev(i,DIM)
MEANDEV estimates the Mean deviation
(note that according to [1,2] this is the mean deviation;
not the mean absolute deviation)
y = meandev(x,DIM)
calculates the mean deviation of x in dimension DIM
DIM dimension
1: STATS of columns
2: ... | {"url":"http://biosig-consulting.com/matlab/help/NaN/meandev.html","timestamp":"2014-04-18T18:21:14Z","content_type":null,"content_length":"3657","record_id":"<urn:uuid:d15e704a-1118-4828-baa7-e2da35e2f87f>","cc-path":"CC-MAIN-2014-15/segments/1397609535095.7/warc/CC-MAIN-20140416005215-00356-ip-10-147-4-33.ec2.interna... |
West Bridgewater Geometry Tutor
Find a West Bridgewater Geometry Tutor
...I primarily tutored probability and statistics, single and multi variable calculus, and college algebra. I have also done a considerable amount of private tutoring in a variety of different
areas of math. I am qualified to tutor nearly all ar... | {"url":"http://www.purplemath.com/West_Bridgewater_geometry_tutors.php","timestamp":"2014-04-20T13:33:36Z","content_type":null,"content_length":"24230","record_id":"<urn:uuid:a0f81546-b7b5-4eda-9249-13b726a527b2>","cc-path":"CC-MAIN-2014-15/segments/1397609538787.31/warc/CC-MAIN-20140416005218-00475-ip-10-147-4-33.ec2.... |
This problem's been bothering me for a while now
Hi ME101! Welcome to PF!
Once given an initial velocity, can there be a condition in which the masses keep rotating (forever) about the axis?
1 thing I found out was that the center of mass of the system needs to be above the axis of rotation at all times, right?
Yes, ex... | {"url":"http://www.physicsforums.com/showthread.php?s=d7cfdcfad4e945ce378e8f29eef8754a&p=4662104","timestamp":"2014-04-25T00:41:37Z","content_type":null,"content_length":"38432","record_id":"<urn:uuid:ebab4b8d-a9fd-412d-97e6-a1818d5fa32f>","cc-path":"CC-MAIN-2014-15/segments/1398223207046.13/warc/CC-MAIN-20140423032007... |
Topology is Connectedness
Doktor DynaSoar targeting at OMCL.mil
Mon Feb 23 17:52:35 EST 2004
On Mon, 23 Feb 2004 08:26:01 GMT, "k p Collins"
<kpaulc@[----------]earthlink.net> wrote:
} I stand on what =I've= posted.
All of it?
"You're missing some crucial data that cross-correlates
your 'time' series to the cerebellar... | {"url":"http://www.bio.net/bionet/mm/neur-sci/2004-February/057389.html","timestamp":"2014-04-16T05:15:17Z","content_type":null,"content_length":"6455","record_id":"<urn:uuid:bfb3ba66-3d95-485a-937e-0bb95d803ddc>","cc-path":"CC-MAIN-2014-15/segments/1397609521512.15/warc/CC-MAIN-20140416005201-00315-ip-10-147-4-33.ec2.... |
Quick PDEs Question! BVPs: time-dependent heat gen in a bar
April 21st 2009, 08:59 AM #1
Oct 2008
Quick question, what would be the general method for solving this type of problem;
(d/dt)u - (d2/dx2)u = h(x, t)
with homogeneous BCs:
u (0, t) = 0
u (L, t) = 0,
and IC u (x, 0) = f(x)
Just ... | {"url":"http://mathhelpforum.com/calculus/84815-quick-pdes-question-bvps-time-dependent-heat-gen-bar.html","timestamp":"2014-04-21T05:49:53Z","content_type":null,"content_length":"37129","record_id":"<urn:uuid:05366f8c-e0a4-40ae-a2e7-065cea7ede62>","cc-path":"CC-MAIN-2014-15/segments/1397609539493.17/warc/CC-MAIN-20140... |
st: Mata maximum likelihood error on trivial regression
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 In... | {"url":"http://www.stata.com/statalist/archive/2011-08/msg00922.html","timestamp":"2014-04-19T07:07:43Z","content_type":null,"content_length":"8945","record_id":"<urn:uuid:69b0b095-2630-4ed3-877b-ab67bfe88496>","cc-path":"CC-MAIN-2014-15/segments/1397609536300.49/warc/CC-MAIN-20140416005216-00081-ip-10-147-4-33.ec2.int... |
An Introduction to Population Ecology - Introduction to Population Modeling
The ability to predict the population size of a group of individuals is extremely useful to the study of ecology. It allows for the estimation of the various effects imposed upon a group by internal
and external forces. We note that the word fo... | {"url":"http://www.maa.org/publications/periodicals/loci/joma/an-introduction-to-population-ecology-introduction-to-population-modeling","timestamp":"2014-04-21T13:25:52Z","content_type":null,"content_length":"102216","record_id":"<urn:uuid:5234518e-6a3a-4920-a34e-176994f526e9>","cc-path":"CC-MAIN-2014-15/segments/1398... |
10th Grade Pre-Calc
Number of results: 45,246
10th Grade Pre-Calc
The demand equation for a hand-held electronic organizer is... P=5000(1-(4/4+e^-.002x)) Find the demand x for a price of (a) P=600? So strange. Thx for help
Tuesday, January 17, 2012 at 12:02am by Anthony Clay
10th Grade Pre-Calc
Don't you mean P = 5000[... | {"url":"http://www.jiskha.com/search/index.cgi?query=10th+Grade+Pre-Calc","timestamp":"2014-04-16T23:08:04Z","content_type":null,"content_length":"29005","record_id":"<urn:uuid:b71b2855-3a66-4429-83cd-dee13b9d388c>","cc-path":"CC-MAIN-2014-15/segments/1397609525991.2/warc/CC-MAIN-20140416005205-00157-ip-10-147-4-33.ec2... |
globally hyperbolic Lorentzian manifold
globally hyperbolic Lorentzian manifold
Riemannian geometry
Basic definitions
Further concepts
A Lorentzian manifold is called globally hyperbolic if it admits a well-defined time evolution from initial data of physical fields on it.
There are several equivalent definitions of gl... | {"url":"http://www.ncatlab.org/nlab/show/globally+hyperbolic+Lorentzian+manifold","timestamp":"2014-04-20T08:51:00Z","content_type":null,"content_length":"19118","record_id":"<urn:uuid:5b6d2f8a-2640-4219-b3fa-21d20450698c>","cc-path":"CC-MAIN-2014-15/segments/1398223205137.4/warc/CC-MAIN-20140423032005-00394-ip-10-147-... |
Math Forum Discussions
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Topic: ekpirical histogram of a density function
Replies: 1 Last Post: Jun 8, 2012 11:54 PM
Messages: [... | {"url":"http://mathforum.org/kb/message.jspa?messageID=7834907","timestamp":"2014-04-19T04:41:12Z","content_type":null,"content_length":"17511","record_id":"<urn:uuid:b0637aca-447b-41db-9127-e2ab93af726a>","cc-path":"CC-MAIN-2014-15/segments/1397609535775.35/warc/CC-MAIN-20140416005215-00644-ip-10-147-4-33.ec2.internal... |
Constrained Simultaneous and Near-Simultaneous Embeddings
Frati, Fabrizio and Kaufmann, Michael and Kobourov, Stephen G. (2008) Constrained Simultaneous and Near-Simultaneous Embeddings. In: Graph Drawing 15th International Symposium, GD 2007, September
24-26, 2007, Sydney, Australia , pp. 268-279 (Official URL: http:/... | {"url":"http://gdea.informatik.uni-koeln.de/844/","timestamp":"2014-04-20T03:10:56Z","content_type":null,"content_length":"25686","record_id":"<urn:uuid:28cefe74-5674-458e-9494-6c029334bcc8>","cc-path":"CC-MAIN-2014-15/segments/1398223206672.15/warc/CC-MAIN-20140423032006-00513-ip-10-147-4-33.ec2.internal.warc.gz"} |
The popular American TV show "Lost" made many esoteric references to the number "108" (a series that I never watched personally)
Apparently, the series includes quite a few references to Buddhism. For example, the sum of "the numbers" (4, 8, 15, 16, 23, and 42) is 108, and "the numbers" must be entered into a computer... | {"url":"http://lawrencerspencer.com/tag/108/","timestamp":"2014-04-18T15:39:27Z","content_type":null,"content_length":"59662","record_id":"<urn:uuid:a16177c8-1587-45a9-bad8-d1c0a6d3c4c4>","cc-path":"CC-MAIN-2014-15/segments/1398223206647.11/warc/CC-MAIN-20140423032006-00011-ip-10-147-4-33.ec2.internal.warc.gz"} |
Monterey Park Precalculus Tutor
Find a Monterey Park Precalculus Tutor
...I tutor all undergraduate math (lower & upper division) and all high school math. I am the best at Algebra, Calculus series, Probability, and upper division mathematics such as Abstract Algebra
and Analysis. I have more than 4 years of experi... | {"url":"http://www.purplemath.com/Monterey_Park_Precalculus_tutors.php","timestamp":"2014-04-16T16:48:01Z","content_type":null,"content_length":"24294","record_id":"<urn:uuid:7fef0523-f0be-4d5a-beaf-989fd4c285f0>","cc-path":"CC-MAIN-2014-15/segments/1397609524259.30/warc/CC-MAIN-20140416005204-00024-ip-10-147-4-33.ec2.... |
Examine if f is primitive of g?
g=e^x(x+1)^2 - Homework Help - eNotes.com
Examine if f is primitive of g?
You need to test if `f(x)` is the primitive of `g(x)` , hence, you need to check if `f'(x) = g(x)` , such that:
`f'(x) = (e^x(x^2+1))'`
You need to differentiate the function with respect to `x` , using the product... | {"url":"http://www.enotes.com/homework-help/examine-f-primitive-g-f-e-x-x-2-1-g-e-x-x-1-2-456632","timestamp":"2014-04-19T05:21:44Z","content_type":null,"content_length":"24949","record_id":"<urn:uuid:04895e3f-c2d9-4a97-a3d4-31476f5776ad>","cc-path":"CC-MAIN-2014-15/segments/1397609535775.35/warc/CC-MAIN-20140416005215... |
[Numpy-discussion] bug in numpy.mean() ?
Zachary Pincus zachary.pincus@yale....
Tue Jan 24 13:05:50 CST 2012
> You have a million 32-bit floating point numbers that are in the
> thousands. Thus you are exceeding the 32-bitfloat precision and, if you
> can, you need to increase precision of the accumulator in np.mean(... | {"url":"http://mail.scipy.org/pipermail/numpy-discussion/2012-January/059965.html","timestamp":"2014-04-16T04:58:27Z","content_type":null,"content_length":"3647","record_id":"<urn:uuid:9a1fbde2-84e2-4b44-b5b6-75894d468ff4>","cc-path":"CC-MAIN-2014-15/segments/1397609521512.15/warc/CC-MAIN-20140416005201-00258-ip-10-147... |
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Math Forum Discussions - Re: Matheology § 224
Date: Mar 25, 2013 1:22 PM
Author: fom
Subject: Re: Matheology § 224
On 3/25/2013 6:47 AM, WM wrote:
> For every and for all in my example are equivalent. Every and all
> elements of the inductive set of FISONs can be removed without
> changing the union, iff actual infinit... | {"url":"http://mathforum.org/kb/plaintext.jspa?messageID=8760690","timestamp":"2014-04-19T23:54:32Z","content_type":null,"content_length":"1730","record_id":"<urn:uuid:0c15bbec-7c33-45af-9542-4fcb47bbdba6>","cc-path":"CC-MAIN-2014-15/segments/1397609537754.12/warc/CC-MAIN-20140416005217-00514-ip-10-147-4-33.ec2.interna... |
Cartersville, GA Science Tutor
Find a Cartersville, GA Science Tutor
...The subjects that I teach specifically are: pre-algebra, algebra, biology, anatomy/physiology, chemistry, physics, and forensic science. I enjoy helping students find their niche and helping
student to overcome their challenges in math and scie... | {"url":"http://www.purplemath.com/Cartersville_GA_Science_tutors.php","timestamp":"2014-04-18T21:40:13Z","content_type":null,"content_length":"24261","record_id":"<urn:uuid:cdbb4d31-fff8-4962-bd61-f8d6c930818a>","cc-path":"CC-MAIN-2014-15/segments/1397609535095.9/warc/CC-MAIN-20140416005215-00556-ip-10-147-4-33.ec2.int... |
How to Conquer the Times Table, Part 3
Sep 12 2011
How to Conquer the Times Table, Part 3
Photo of Javier times 4, by Javier Ignacio Acuña Ditzel, via flickr.
If you remember, we are in the middle of an experiment in mental math. We are using the world’s oldest interactive game — conversation — to explore multiplicatio... | {"url":"http://letsplaymath.net/2011/09/12/how-to-conquer-the-times-table-part-3/","timestamp":"2014-04-16T16:42:11Z","content_type":null,"content_length":"86191","record_id":"<urn:uuid:5bb40532-d214-4a5b-a407-fcf07668e5d8>","cc-path":"CC-MAIN-2014-15/segments/1397609524259.30/warc/CC-MAIN-20140416005204-00267-ip-10-14... |
Area in Polar Coordinates
April 2nd 2008, 12:32 PM #1
Nov 2007
Area in Polar Coordinates
Find the area of the region which is inside the polar curve :
r = 3 cos( θ)
and outside the curve :
r = 2 − 1 cos( θ)
Please help!
draw the curves, to see how it looks (looks like a moon)
then calcul... | {"url":"http://mathhelpforum.com/calculus/32981-area-polar-coordinates.html","timestamp":"2014-04-20T00:29:35Z","content_type":null,"content_length":"35785","record_id":"<urn:uuid:36650554-8bc6-423b-a596-95d81bfdbe63>","cc-path":"CC-MAIN-2014-15/segments/1397609537754.12/warc/CC-MAIN-20140416005217-00499-ip-10-147-4-33... |
[Numpy-discussion] np.void from 0d array + subclassing
Robert Kern robert.kern@gmail....
Thu Dec 17 17:35:26 CST 2009
On Thu, Dec 17, 2009 at 16:11, Pierre GM <pgmdevlist@gmail.com> wrote:
> On Dec 17, 2009, at 10:16 AM, Francesc Alted wrote:
>> A Thursday 17 December 2009 15:16:29 Pierre GM escrigué:
>>> All,
>>> * Wh... | {"url":"http://mail.scipy.org/pipermail/numpy-discussion/2009-December/047519.html","timestamp":"2014-04-16T18:57:15Z","content_type":null,"content_length":"3936","record_id":"<urn:uuid:e16b4a0c-3d59-42a0-ad1e-82544d3244ef>","cc-path":"CC-MAIN-2014-15/segments/1397609539705.42/warc/CC-MAIN-20140416005219-00283-ip-10-14... |
Inside the Windows Vista Disk Encryption Algorithm
Suppose an attacker is attacking two identical hard drives, one encrypted with AES-CBC + Elephant diffuser and the other encrypted only by AES-CBC. We are going to give the attacker the tweak key in
Figure 1; this means the attacker can now perform the diffusion layer ... | {"url":"http://www.drdobbs.com/security/inside-the-windows-vista-disk-encryption/201804187?pgno=4","timestamp":"2014-04-18T23:30:52Z","content_type":null,"content_length":"95162","record_id":"<urn:uuid:7d60f0b2-cfa1-4967-9bfc-dc1f7533ada5>","cc-path":"CC-MAIN-2014-15/segments/1398223210034.18/warc/CC-MAIN-2014042303201... |
Quantum Computing Takes Center Stage In Wake of NSA Encryption Cracking
In the late 1990′s while I was with Ascend Communications, I participated in the creation of the “point-to-point tunneling protocol” (PPTP) with engineers at Microsoft and Cisco Systems, now an
Internet Engineering Task Force (IETF) industry standa... | {"url":"http://mayo615.com/2013/09/07/quantum-computing-takes-center-stage-in-wake-of-nsa-encryption-cracking/","timestamp":"2014-04-18T05:46:45Z","content_type":null,"content_length":"93550","record_id":"<urn:uuid:5cc63105-66a2-48c3-b7a5-9500a751568a>","cc-path":"CC-MAIN-2014-15/segments/1397609532573.41/warc/CC-MAIN-... |
Math Help
September 10th 2009, 09:39 PM #1
Junior Member
Oct 2008
Hi, can somebody help me with his problem, I have no idea how to do it. Thanks!
A cube has an edge length of 7 cm. If it is divided up into 1-cm cubes, how many 1-cm would there be?
What I think: 7 * 8 = 56 since a cube has 8 edges...
... | {"url":"http://mathhelpforum.com/pre-calculus/101614-pre-cal.html","timestamp":"2014-04-19T01:00:11Z","content_type":null,"content_length":"30369","record_id":"<urn:uuid:01232079-04f5-41df-9374-d8fb381e493c>","cc-path":"CC-MAIN-2014-15/segments/1397609535535.6/warc/CC-MAIN-20140416005215-00525-ip-10-147-4-33.ec2.intern... |
Derivations of semisimple Lie algebras and the abstract Jordan decomposition
I learned the material in this post from the book by Humphreys on Lie algebras and representation theory.
Recall that if ${A}$ is any algebra (not necessarily associative), then the derivations of ${A}$ form a Lie algebra ${Der(A)}$, and that ... | {"url":"http://amathew.wordpress.com/2010/01/30/derivations-of-semisimple-lie-algebras-and-the-abstract-jordan-decomposition/","timestamp":"2014-04-17T18:37:11Z","content_type":null,"content_length":"65379","record_id":"<urn:uuid:4df658a4-5cf6-485f-98cb-fbbca7c4d671>","cc-path":"CC-MAIN-2014-15/segments/1397609530895.4... |
Posts by
Total # Posts: 961
Te gustan Los coches pequenos?
How do you do $1.00 for 6 lemons ?
math pre calc
well you minus 8^6 to the other side and solve for x
oh right it should be 3x^2(3-x)^4-4x^3(3-x)^3, mistyped that.
they're the same answer. you just simplified it.
product rule. F(x)= f(x)*g(x) F'(x)= f'(x)g(x)+... | {"url":"http://www.jiskha.com/members/profile/posts.cgi?name=Brandon&page=3","timestamp":"2014-04-21T13:50:34Z","content_type":null,"content_length":"27776","record_id":"<urn:uuid:d3dfca99-cb77-4873-9203-d2ab74e863e0>","cc-path":"CC-MAIN-2014-15/segments/1398223204388.12/warc/CC-MAIN-20140423032004-00026-ip-10-147-4-33... |
PERT advantages and disadvantages
I would like someone to discuss, in details, the advantages and disadvantages of PERT, and whether PERT is still relevant and should still be used in today's projects.
By the way, how old is PERT? When was it invented, and by whom?
PERT was developed in the late 50s by Booz Allen Hamil... | {"url":"http://www.projectmanagementquestions.com/4087/pert-advantages-and-disadvantages","timestamp":"2014-04-16T13:05:28Z","content_type":null,"content_length":"22960","record_id":"<urn:uuid:d4421689-c748-4d03-a02f-f00bda604851>","cc-path":"CC-MAIN-2014-15/segments/1397609523429.20/warc/CC-MAIN-20140416005203-00456-i... |
The Rational Class Program [HOMEWORK HELP]
October 18th, 2011, 09:50 AM
The Rational Class Program [HOMEWORK HELP]
This is for my AP Computer Science class that I am struggling with. Please help me.
Assignment Purpose:
The primary purpose of this lab is to demonstrate knowledge of creating a class with obje... | {"url":"http://www.javaprogrammingforums.com/%20object-oriented-programming/11694-rational-class-program-%5Bhomework-help%5D-printingthethread.html","timestamp":"2014-04-19T10:04:43Z","content_type":null,"content_length":"12494","record_id":"<urn:uuid:d8718b5c-b0a6-4948-bd79-08df33a02e26>","cc-path":"CC-MAIN-2014-15/se... |
1053 Pendulum
TimeLimit: 1 Second MemoryLimit: 32 Megabyte
Totalsubmit: 4 Accepted: 1
Consider a pendulum hanging on a string from a hook on a wall. When pushed, this pendulum will swing back and forth. Now imagine other hooks on the wall, placed in the path of our pendulum's string.
The pendulum will bend around them,... | {"url":"http://acm.hrbeu.edu.cn/index.php?act=problem&id=1053","timestamp":"2014-04-20T13:27:54Z","content_type":null,"content_length":"7917","record_id":"<urn:uuid:e6f6980b-af2c-471b-a235-63685a77216c>","cc-path":"CC-MAIN-2014-15/segments/1397609538787.31/warc/CC-MAIN-20140416005218-00384-ip-10-147-4-33.ec2.internal.w... |
Claude Shannon
34,117pages on
this wiki
Assessment | Biopsychology | Comparative | Cognitive | Developmental | Language | Individual differences | Personality | Philosophy | Social |
Methods | Statistics | Clinical | Educational | Industrial | Professional items | World psychology |
Social psychology: Altruism · Attrib... | {"url":"http://psychology.wikia.com/wiki/Claude_Shannon?oldid=142231","timestamp":"2014-04-18T21:44:57Z","content_type":null,"content_length":"154016","record_id":"<urn:uuid:33e661a9-7f63-4e66-9808-2fa7e543b136>","cc-path":"CC-MAIN-2014-15/segments/1397609535095.9/warc/CC-MAIN-20140416005215-00649-ip-10-147-4-33.ec2.in... |
Corality Financial Group
The Loan Life Cover Ratio (LLCR) is one of the most commonly used debt metrics in Project Finance. Unlike period-on-period measures such as the Debt Service Cover Ratio (DSCR) it provides an analyst
with a measure of the number of times the cashflow over the scheduled life of the loan can repay... | {"url":"http://www.corality.com/tutorials/llcr-loan-life-coverage-ratio","timestamp":"2014-04-18T08:40:08Z","content_type":null,"content_length":"58599","record_id":"<urn:uuid:80ce0577-1ddd-4f1c-93ef-d68c094191fb>","cc-path":"CC-MAIN-2014-15/segments/1397609533121.28/warc/CC-MAIN-20140416005213-00183-ip-10-147-4-33.ec2... |
Free splittings of one-relator groups
up vote 15 down vote favorite
Roughly speaking, I want to know whether one-relator groups only have 'obvious' free splittings.
Consider a one-relator group $G=F/\langle\langle r\rangle\rangle$, where $F$ is a free group. Is it true that $F$ splits non-trivially as a free produc... | {"url":"http://mathoverflow.net/questions/26640/free-splittings-of-one-relator-groups/26660","timestamp":"2014-04-21T02:49:33Z","content_type":null,"content_length":"69259","record_id":"<urn:uuid:5063d95b-1739-413c-8ffb-05cd207e6164>","cc-path":"CC-MAIN-2014-15/segments/1397609539447.23/warc/CC-MAIN-20140416005219-0036... |
Continuous cohomology of semi-simple Lie group.
up vote 5 down vote favorite
Let $G$ be a real connected semi-simple Lie group. Let $M$ be a finite dimensional representation of it. Are there general criteria when the continuous cohomology groups $H_{cont}^q(G,M)$ vanish?
A situation of particular interest for me is $G... | {"url":"http://mathoverflow.net/questions/78999/continuous-cohomology-of-semi-simple-lie-group","timestamp":"2014-04-16T13:37:49Z","content_type":null,"content_length":"66991","record_id":"<urn:uuid:35df5e77-5042-4f60-8f36-060d167a63ec>","cc-path":"CC-MAIN-2014-15/segments/1397609523429.20/warc/CC-MAIN-20140416005203-0... |
Hausdorff maximal principle
Hausdorff maximal principle
The Hausdorff maximal principle is a version of Zorn's lemma, equivalent to the usual version and thus (given excluded middle) equivalent to the axiom of choice.
Statement and proofs
Given a poset (or proset) $S$, let a chain in $S$ be a subset $A$ of $S$ which, a... | {"url":"http://www.ncatlab.org/nlab/show/Hausdorff+maximal+principle","timestamp":"2014-04-21T02:02:48Z","content_type":null,"content_length":"20912","record_id":"<urn:uuid:84341be8-5b7a-4b18-bf28-66e4538b8e4a>","cc-path":"CC-MAIN-2014-15/segments/1398223203841.5/warc/CC-MAIN-20140423032003-00475-ip-10-147-4-33.ec2.int... |
Academic Bulletin
School of Sciences
General Studies Degree Program
Science, Mathematics, and Informatics Courses Undergraduate
Note: The university reserves the right to cancel courses for insufficient enrollment.
P = prerequisite R = recommended C = co-requisite * = lab fee
• ANAT-A 215 Basic Human Anatomy (5 cr.) ... | {"url":"http://www.iuk.edu/~bulletin/iuk/2012-2013/majors-minors/school-of-sciences/general-studies-degree-program/science-mathematics-and-informatics-courses-undergraduate.shtml","timestamp":"2014-04-18T19:13:45Z","content_type":null,"content_length":"59713","record_id":"<urn:uuid:3f8bb181-3460-4273-b3ed-17f10ad4fbbe>... |
Confused with Complex Vector Space notation
November 26th 2012, 11:38 PM #1
Oct 2009
Confused with Complex Vector Space notation
I've attached a picture with the problem statement. I've done some least squares problems with matrices, but I don't think that will work here.
I thought I'd just find the orthogo... | {"url":"http://mathhelpforum.com/advanced-algebra/208507-confused-complex-vector-space-notation.html","timestamp":"2014-04-20T02:46:34Z","content_type":null,"content_length":"37801","record_id":"<urn:uuid:11cff3a4-75b5-4edc-b785-67c8bc2c3919>","cc-path":"CC-MAIN-2014-15/segments/1397609538022.19/warc/CC-MAIN-2014041600... |
Multiwavelets on the Interval
Bin Han and Qing-Tang Jiang
Smooth orthogonal and biorthogonal multiwavelets on the real line with their scaling function vectors being supported on $[-1,1]$ are of interest in constructing wavelet bases ... | {"url":"http://www.ualberta.ca/~bhan/abstracts/2002hjqt.abs.html","timestamp":"2014-04-18T00:15:48Z","content_type":null,"content_length":"2204","record_id":"<urn:uuid:ab61f509-210c-41f9-a367-46c9945573db>","cc-path":"CC-MAIN-2014-15/segments/1397609532374.24/warc/CC-MAIN-20140416005212-00533-ip-10-147-4-33.ec2.interna... |
[SOLVED] How to change the base of y=A(1.3)^-t
April 27th 2009, 12:13 PM #1
Apr 2009
[SOLVED] How to change the base of y=A(1.3)^-t
The question says:
" $y=A(1.3)^{-t}$
By changing the base of the exponent to e, express y in terms of A, e and t."
I tried:
$y=A(1.3)^{-t}\Rightarrow\frac{y}{A}=1.3... | {"url":"http://mathhelpforum.com/pre-calculus/86029-solved-how-change-base-y-1-3-t.html","timestamp":"2014-04-20T20:10:17Z","content_type":null,"content_length":"36686","record_id":"<urn:uuid:462a71f7-e666-4564-852d-efb48fa32a5b>","cc-path":"CC-MAIN-2014-15/segments/1397609539066.13/warc/CC-MAIN-20140416005219-00449-ip... |
Fourth Grade Runaway Math Puzzles - Make and print your own Runaway Math Puzzles - Theme Unit
'); } var S; S=topJS(); SLoad(S); //-->
edHelper.com Fourth Grade
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Second grade runaway math puzzles
Third grade runaway math puzzles
Fourth grade runaway math puzz... | {"url":"http://www.edhelper.com/runaway_math_puzzle_grade4.htm","timestamp":"2014-04-21T02:01:31Z","content_type":null,"content_length":"57114","record_id":"<urn:uuid:95e7d8b9-7771-404f-a503-e6f7b2adc5c6>","cc-path":"CC-MAIN-2014-15/segments/1398223202548.14/warc/CC-MAIN-20140423032002-00023-ip-10-147-4-33.ec2.internal... |
Lawrence, NJ Precalculus Tutor
Find a Lawrence, NJ Precalculus Tutor
...I was lucky enough to be placed in a classroom with a teacher who firmly believed in a hands-on learning experience. Through his methods, I have learned how to incorporate a student-centered
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intersecting line segments definition
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Line segment
In geometry, a line segment is a part of a line that is bounded by two end points, and contains every point on the line between its end points. Examples of line segments include the sides of a
triangle or... | {"url":"http://www.edurite.com/kbase/intersecting-line-segments-definition","timestamp":"2014-04-21T15:21:29Z","content_type":null,"content_length":"72775","record_id":"<urn:uuid:93e1fd92-214d-4c13-9a3f-c93dd33cd515>","cc-path":"CC-MAIN-2014-15/segments/1397609540626.47/warc/CC-MAIN-20140416005220-00448-ip-10-147-4-33.... |
Normal Distribution
Hi robinsonov;
Please start your own thread from now on in "Help Me" that way you will get faster help.
Here is how I do it. Start with the obvious fraction.
Now you have to get a whole number over another whole number.
If you moved the decimal point in 1.0021 four places to the right
you would have... | {"url":"http://www.mathisfunforum.com/viewtopic.php?pid=179636","timestamp":"2014-04-20T00:51:54Z","content_type":null,"content_length":"29139","record_id":"<urn:uuid:4599c09f-3fd8-4318-b42c-dc94bd88e56e>","cc-path":"CC-MAIN-2014-15/segments/1397609537804.4/warc/CC-MAIN-20140416005217-00459-ip-10-147-4-33.ec2.internal.... |
Exact first order differential equations problems
February 18th 2009, 08:41 AM
Exact first order differential equations problems
I'm totally unsure of where to put this topic - sorry itll probably need moved.(Worried)
Ok I'm doing a further maths A-level right now but I'm also doing an ordinary maths A-level at... | {"url":"http://mathhelpforum.com/differential-equations/74274-exact-first-order-differential-equations-problems-print.html","timestamp":"2014-04-19T05:07:52Z","content_type":null,"content_length":"14239","record_id":"<urn:uuid:9f068324-9c9e-44a2-95dc-5efa015a359b>","cc-path":"CC-MAIN-2014-15/segments/1397609535775.35/w... |
High Voltage Power Supply - UltraVolt®
AP-6: Thermal Management of UltraVolt HVPSs
download as PDF
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Mount Hamilton Precalculus Tutor
Find a Mount Hamilton Precalculus Tutor
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Newest 'polynomials' Questions - Page 2
Questions in which polynomials (single or several variables) play a key role. It is typically important that this tag is combined with other tags; polynomials appear in very different contexts.
Please, use at least one of the top-level tags, such as nt.number-theory, co.c... | {"url":"http://mathoverflow.net/questions/tagged/polynomials?page=2&sort=newest&pagesize=15","timestamp":"2014-04-16T10:36:09Z","content_type":null,"content_length":"169150","record_id":"<urn:uuid:92d23c4a-bce6-4b18-9e66-1c7a946465ae>","cc-path":"CC-MAIN-2014-15/segments/1397609523265.25/warc/CC-MAIN-20140416005203-005... |
Pacoima Geometry Tutor
...Students I worked with have scored higher on their finals and other placement tests. I am very flexible and available weekdays and weekends. I will be a great help for students who require
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