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The Tale of Two Meters
Well, I’ve been mucking around with my RF probe circuitry a bit tonight, and encountered something pretty strange. I have two digital multimeters lying around, and my newly rebuilt RF probe/dummy
load that I described earlier. I hook one multimeter to it, and I get a reading of 14 volts. I get my... | {"url":"http://brainwagon.org/2009/01/12/the-tale-of-two-meters/","timestamp":"2014-04-19T14:29:16Z","content_type":null,"content_length":"44408","record_id":"<urn:uuid:e960c47c-c1b6-40e2-8a27-b4146008526a>","cc-path":"CC-MAIN-2014-15/segments/1397609537271.8/warc/CC-MAIN-20140416005217-00531-ip-10-147-4-33.ec2.interna... |
Precalc Questionbook
Demonstrate your mastery of the exponential, log, and trig functions, their graphs, and their symbolic expressions by creating an original and mathematically correct picture and set of expressions.
The picture must use graphs of functions as its component parts and must represent something recogniz... | {"url":"http://www.mathnstuff.com/math/algebra/copix/pcdraw.htm","timestamp":"2014-04-18T18:34:34Z","content_type":null,"content_length":"2158","record_id":"<urn:uuid:8e68fa85-560b-4206-8e13-c31c7a21f9ac>","cc-path":"CC-MAIN-2014-15/segments/1398223201753.19/warc/CC-MAIN-20140423032001-00342-ip-10-147-4-33.ec2.internal... |
The Master constraint program in LQG
Posted by Aaron
I’m a little reluctant to post much on the master constraint program because I haven’t read much on it. But I thought I’d post this if others want to comment on the subject.
My initial question is how does the master constraint program work in classical mechanics? In... | {"url":"http://golem.ph.utexas.edu/string/archives/000915.html","timestamp":"2014-04-19T11:57:43Z","content_type":null,"content_length":"55993","record_id":"<urn:uuid:ee107414-2c59-4f53-b4ca-ee7c20575ae0>","cc-path":"CC-MAIN-2014-15/segments/1397609537186.46/warc/CC-MAIN-20140416005217-00068-ip-10-147-4-33.ec2.internal... |
Generating family for the Lebesgue $\sigma$-algebra
up vote 7 down vote favorite
Let $X$ be a set, and $\cal F$ a family of subsets of $X$, let $\Sigma(\cal F)$ denote the smallest $\sigma$-algebra containing $\cal F$. We can also define $\Sigma(\cal F)$ internally using a
transfinite induction up to $\omega_1$. We wil... | {"url":"http://mathoverflow.net/questions/102000/generating-family-for-the-lebesgue-sigma-algebra","timestamp":"2014-04-23T19:42:24Z","content_type":null,"content_length":"56262","record_id":"<urn:uuid:b2606fb4-f1a0-47ac-b618-e1800f1afbe0>","cc-path":"CC-MAIN-2014-15/segments/1398223203422.8/warc/CC-MAIN-20140423032003... |
• Basically a relation in relational algebra is a set of dictionaries (called tuples) where each dictionary has identical keys
Planet Python
• Go to: www. cramster.com Vectors are "tuples" (pairs, triples, or more) of numbers, depending on how many dimensions you're working with.
Yahoo! Answers: Latest Questi... | {"url":"https://www.wordnik.com/words/tuples","timestamp":"2014-04-19T11:00:29Z","content_type":null,"content_length":"32424","record_id":"<urn:uuid:7efe8b2d-5130-4b78-b664-5f5fad837362>","cc-path":"CC-MAIN-2014-15/segments/1397609537097.26/warc/CC-MAIN-20140416005217-00654-ip-10-147-4-33.ec2.internal.warc.gz"} |
Fox Valley Algebra Tutor
Do you need some help with your math homework? I love math and helping students understand it. I first tutored math in college and have been tutoring for a couple years independently.
26 Subjects: including algebra 1, algebra 2, chemistry, Spanish
...I have a PhD. in experimental nuclea... | {"url":"http://www.purplemath.com/fox_valley_algebra_tutors.php","timestamp":"2014-04-18T13:29:59Z","content_type":null,"content_length":"23656","record_id":"<urn:uuid:a1fb4c42-fcf8-4e4e-b180-184dc952c733>","cc-path":"CC-MAIN-2014-15/segments/1397609533689.29/warc/CC-MAIN-20140416005213-00646-ip-10-147-4-33.ec2.interna... |
User Gil Kalai
bio website gilkalai.wordpress.com
location Jerusalem
age 58
visits member for 4 years, 5 months
seen 3 hours ago
stats profile views 16,415
Professor of Mathematics at the Hebrew University of Jerusalem and at Yale University
Mar Fi... | {"url":"http://mathoverflow.net/users/1532/gil-kalai?tab=activity&sort=comments","timestamp":"2014-04-16T22:17:28Z","content_type":null,"content_length":"47736","record_id":"<urn:uuid:da18c354-26b6-4442-933d-d257b1776ef9>","cc-path":"CC-MAIN-2014-15/segments/1397609525991.2/warc/CC-MAIN-20140416005205-00208-ip-10-147-4... |
Physics Forums - "Waves" of sine expression
General Math
greggory Mar9-12 09:05 PM
"Waves" of sine expression
So, I have been working with a lot of Math today(sorry if I am asking so many questions), and I found and expression. All sine functions use radians.
sin(y) + sin(y) / sin(y)
Now, assuming you start with 1, ... | {"url":"http://www.physicsforums.com/printthread.php?t=585450","timestamp":"2014-04-20T14:12:35Z","content_type":null,"content_length":"7255","record_id":"<urn:uuid:70273b0c-14fb-4fb0-b030-ca47eaeaa89c>","cc-path":"CC-MAIN-2014-15/segments/1397609538787.31/warc/CC-MAIN-20140416005218-00487-ip-10-147-4-33.ec2.internal.w... |
st: Stata License Rules
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st: Stata License Rules
From "Feiveson, Alan H. (JSC-SK311)" <alan.h.feiveson@nasa.gov>
To "statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu>
Subject st: Stata License Rules
Date Thu, 15 Oct 2009... | {"url":"http://www.stata.com/statalist/archive/2009-10/msg00709.html","timestamp":"2014-04-18T23:31:59Z","content_type":null,"content_length":"7026","record_id":"<urn:uuid:66749701-fc8d-42a4-8d43-e2ed3accdfa5>","cc-path":"CC-MAIN-2014-15/segments/1398223206118.10/warc/CC-MAIN-20140423032006-00464-ip-10-147-4-33.ec2.int... |
Introduction to Hidden Markov Models (HMM)
A hidden Markov model (HMM) is one in which you observe a sequence of emissions, but do not know the sequence of states the model went through to generate the emissions. Analyses of hidden Markov
models seek to recover the sequence of states from the observed data.
As an examp... | {"url":"http://www.mathworks.co.uk/help/stats/hidden-markov-models-hmm.html?nocookie=true","timestamp":"2014-04-24T01:12:43Z","content_type":null,"content_length":"50641","record_id":"<urn:uuid:be0c3ec0-7817-4327-8c99-c021722bf085>","cc-path":"CC-MAIN-2014-15/segments/1398223205137.4/warc/CC-MAIN-20140423032005-00226-i... |
Portage, IN Algebra Tutor
Find a Portage, IN Algebra Tutor
...I've tutored many people I've encountered, including friends, roommates, and people who've sat next to me on trains, aside from people who have contacted me for my services. And I've been
assistant-teaching math online for more than three years. I'm used... | {"url":"http://www.purplemath.com/portage_in_algebra_tutors.php","timestamp":"2014-04-20T13:44:36Z","content_type":null,"content_length":"24094","record_id":"<urn:uuid:ee0ecff1-d4cc-4527-a85b-57a5217bc42d>","cc-path":"CC-MAIN-2014-15/segments/1397609538787.31/warc/CC-MAIN-20140416005218-00455-ip-10-147-4-33.ec2.interna... |
[FOM] Automorphisms of nonstandard reals, revisited
ali enayat a_enayat at hotmail.com
Tue Feb 28 22:51:21 EST 2006
In an earlier posting [Feb 25, 2006] I noted that rigid nonstandard models
of analysis exist, if there is a Ramsey ultrafilter (recall: Ramsey
ultrafilters exist in ZFC + CH, and in ZFC + MA + not CH).
Re... | {"url":"http://www.cs.nyu.edu/pipermail/fom/2006-February/010094.html","timestamp":"2014-04-19T19:35:50Z","content_type":null,"content_length":"4192","record_id":"<urn:uuid:d010f93b-2fe7-413d-b906-051b60004484>","cc-path":"CC-MAIN-2014-15/segments/1397609537376.43/warc/CC-MAIN-20140416005217-00455-ip-10-147-4-33.ec2.in... |
Full wave rectifier with an op amp IC
See Other projects in : Basic & Datasheets
And: Linear op-amp, rectifier circuit
Posted by admin - May 6, 2011 at 8:47 am
This circuit acts rectifier the ACV signal.This circuit usually requires two op-amp, but this circuit uses only one op-amp.
The work is easy when a positive inp... | {"url":"http://www.eleccircuit.com/full-wave-rectifier-with-an-op-amp-ic/","timestamp":"2014-04-20T08:30:05Z","content_type":null,"content_length":"42556","record_id":"<urn:uuid:02bfed18-0d80-47e4-9f7f-7bcb44a26818>","cc-path":"CC-MAIN-2014-15/segments/1397609538110.1/warc/CC-MAIN-20140416005218-00503-ip-10-147-4-33.ec... |
calculus 2: work prob.
February 1st 2009, 07:45 PM #1
Feb 2009
calculus 2: work prob.
I really need help with this problem.
the fuel tank on a truck has trapezoidal cross sections with dimensions (in feet) shown in the figure. assume that an engine is approximately 3 ft. above the top of the fuel tank and t... | {"url":"http://mathhelpforum.com/calculus/71266-calculus-2-work-prob.html","timestamp":"2014-04-19T14:56:56Z","content_type":null,"content_length":"30552","record_id":"<urn:uuid:e7982076-a88b-4ccf-8a29-e3c26c5adab0>","cc-path":"CC-MAIN-2014-15/segments/1397609537271.8/warc/CC-MAIN-20140416005217-00169-ip-10-147-4-33.ec... |
Descriptive Statistics: Introduction
By the end of this chapter, the student should be able to:
• Display data graphically and interpret graphs: stemplots, histograms and boxplots.
• Recognize, describe, and calculate the measures of location of data: quartiles and percentiles.
• Recognize, describe, and calculat... | {"url":"http://cnx.org/content/m16300/1.5/","timestamp":"2014-04-16T07:20:45Z","content_type":null,"content_length":"38208","record_id":"<urn:uuid:3c3eaa4e-9fb6-43bf-a755-59bb30ac5cc7>","cc-path":"CC-MAIN-2014-15/segments/1397609521558.37/warc/CC-MAIN-20140416005201-00090-ip-10-147-4-33.ec2.internal.warc.gz"} |
The why and the what of homological algebra
I seem to have become the Goto-guy in this corner of the blogosphere for homological algebra.
Our beloved Dr. Mathochist just gave me the task of taking care of any readers prematurely interested in it while telling us all just a tad too little for satisfaction about Khovanov... | {"url":"http://blog.mikael.johanssons.org/archive/2007/07/the-why-and-the-what-of-homological-algebra/","timestamp":"2014-04-18T15:46:31Z","content_type":null,"content_length":"62850","record_id":"<urn:uuid:ad503946-dfab-4891-837f-369191f421fc>","cc-path":"CC-MAIN-2014-15/segments/1398223210034.18/warc/CC-MAIN-20140423... |
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converge /diverge: from 2 to 3: integral 1/ square root of(3-x... | {"url":"http://openstudy.com/updates/4f8f98d9e4b000310fade0cc","timestamp":"2014-04-19T04:49:18Z","content_type":null,"content_length":"94916","record_id":"<urn:uuid:6c50dcaa-e6c6-4442-97e9-b95e36df2ab3>","cc-path":"CC-MAIN-2014-15/segments/1398223204388.12/warc/CC-MAIN-20140423032004-00486-ip-10-147-4-33.ec2.internal.... |
Results 1 - 10 of 26
, 1993
"... Lagrange multipliers used to be viewed as auxiliary variables introduced in a problem of constrained minimization in order to write first-order optimality conditions formally as a system of
equations. Modern applications, with their emphasis on numerical methods and more complicated sid... | {"url":"http://citeseerx.ist.psu.edu/showciting?cid=2704464","timestamp":"2014-04-23T11:15:57Z","content_type":null,"content_length":"36778","record_id":"<urn:uuid:bfdb8679-089f-408a-9465-230c2b32fa5d>","cc-path":"CC-MAIN-2014-15/segments/1398223202457.0/warc/CC-MAIN-20140423032002-00298-ip-10-147-4-33.ec2.internal.war... |
Assessing the effects of variables and background selection on the capture of the tick climate niche
Modelling the environmental niche and spatial distribution of pathogen-transmitting arthropods involves various quality and methodological concerns related to using climate data to capture the
environmental niche. This ... | {"url":"http://www.ij-healthgeographics.com/content/12/1/43","timestamp":"2014-04-18T20:43:39Z","content_type":null,"content_length":"189251","record_id":"<urn:uuid:d3f10d09-5150-4742-985d-4372bb03786d>","cc-path":"CC-MAIN-2014-15/segments/1398223205137.4/warc/CC-MAIN-20140423032005-00301-ip-10-147-4-33.ec2.internal.wa... |
Wanted: chain of nowhere dense subsets of the real line whose union is nonmeagre, or even contains intervals
up vote 8 down vote favorite
Let $X$ be a topological space. When I call a set nowhere dense, meagre or similar without qualification, I mean that it has this property as a subset of $X$. Call a subset of $X$ we... | {"url":"https://mathoverflow.net/questions/52353/wanted-chain-of-nowhere-dense-subsets-of-the-real-line-whose-union-is-nonmeagre","timestamp":"2014-04-20T01:37:15Z","content_type":null,"content_length":"76620","record_id":"<urn:uuid:a4922b44-21d8-475b-9e03-843528ce7f9c>","cc-path":"CC-MAIN-2014-15/segments/139760953780... |
Improving Pavements With
Long-Term Pavement Performance:
Products for Today and Tomorrow
Improving Pavements With Long-Term Pavement Performance: Products for Today and Tomorrow
Paper 5. Development of A Pavement Climate Map Based on LTPP Data
Yuhong Wang
It has lo... | {"url":"http://www.fhwa.dot.gov/publications/research/infrastructure/pavements/ltpp/03049/paper5.cfm","timestamp":"2014-04-19T02:39:10Z","content_type":null,"content_length":"53438","record_id":"<urn:uuid:ecd34330-cef4-487a-864a-7032e008c5f4>","cc-path":"CC-MAIN-2014-15/segments/1397609535745.0/warc/CC-MAIN-20140416005... |
Average Speed Question
February 3rd 2010, 06:07 PM #1
Apr 2009
Average Speed Question
Hi, I am having trouble getting started on this physics problem...it seems fairly simple just need some hints:
You drive on Interstate 10 from San Antonio to Houston, half the time at 73 km/h and the other half at 90 km/h.... | {"url":"http://mathhelpforum.com/math-topics/127060-average-speed-question.html","timestamp":"2014-04-20T13:05:51Z","content_type":null,"content_length":"37607","record_id":"<urn:uuid:eb2d69bc-c709-494c-a4df-870c6348004e>","cc-path":"CC-MAIN-2014-15/segments/1398223203422.8/warc/CC-MAIN-20140423032003-00231-ip-10-147-4... |
3.4.7 Emulating numeric types
3.4.7 Emulating numeric types
The following methods can be defined to emulate numeric objects. Methods corresponding to operations that are not supported by the particular kind of number implemented (e.g., bitwise operations for
non-integral numbers) should be left undefined.
__floordi... | {"url":"http://www.wingware.com/psupport/python-manual/2.5/ref/numeric-types.html","timestamp":"2014-04-19T07:13:21Z","content_type":null,"content_length":"23475","record_id":"<urn:uuid:35a20088-9665-4651-bce3-99eefda2e66e>","cc-path":"CC-MAIN-2014-15/segments/1398223203422.8/warc/CC-MAIN-20140423032003-00582-ip-10-147... |
Mathematical approach for the assessment of similarity factor using a new scheme for calculating weight Gohel M C, Sarvaiya K G, Shah A R, Brahmbhatt B K - Indian J Pharm Sci
Year : 2009 | Volume : 71 | Issue : 2 | Page : 142-144
Mathematical approach for the assessment of similarity factor using a new scheme for calcu... | {"url":"http://www.ijpsonline.com/article.asp?issn=0250-474X;year=2009;volume=71;issue=2;spage=142;epage=144;aulast=Gohel","timestamp":"2014-04-16T19:43:33Z","content_type":null,"content_length":"48637","record_id":"<urn:uuid:0268c752-beb0-480b-8772-ab264c53c5d1>","cc-path":"CC-MAIN-2014-15/segments/1397609524644.38/wa... |
Extreme Laplacian eigenvalues
up vote 2 down vote favorite
For each undirected (and unweighted) graph $G$ we define the Laplacian matrix by $L(G) = D(G)-A(G)$, where $A(G)$ should denote the adjacency matrix and $D(G)$ the diagonal matrix, where $D(G)_{ii}$
denotes the degree of the $i$-th vertex of $G$ (after some ord... | {"url":"http://mathoverflow.net/questions/108993/extreme-laplacian-eigenvalues?answertab=active","timestamp":"2014-04-19T07:44:21Z","content_type":null,"content_length":"60763","record_id":"<urn:uuid:08f25674-7e55-4940-afd5-e2cf5a4c40d8>","cc-path":"CC-MAIN-2014-15/segments/1397609536300.49/warc/CC-MAIN-20140416005216-... |
Understanding uncertainty: Visualising probabilities
Probabilities and statistics: they are everywhere, but they are hard to understand and can be counter-intuitive. So what's the best way of communicating them to an audience that doesn't have the
time, desire, or background to get stuck into the numbers? Ian Short exp... | {"url":"http://plus.maths.org/content/understanding-uncertainty-visualising-probabilities","timestamp":"2014-04-17T04:06:04Z","content_type":null,"content_length":"43171","record_id":"<urn:uuid:0f50f4d9-2b34-4f78-b7ad-8086f2feea0c>","cc-path":"CC-MAIN-2014-15/segments/1397609526252.40/warc/CC-MAIN-20140416005206-00199-... |
Millionaire Calculus Game
Note: The scores for this game will be reset once per week.
Loading Flash movie...
This Flash-based calculus game begins with revision questions on differentiation and then moves on to integration topics. The questions are concept-based, rather than calculation-based.
Didn't find what you are ... | {"url":"http://www.intmath.com/integration/millionaire-calculus-game.php","timestamp":"2014-04-17T18:37:52Z","content_type":null,"content_length":"21752","record_id":"<urn:uuid:1815ee62-ea5a-49a8-b026-d993b6d72019>","cc-path":"CC-MAIN-2014-15/segments/1398223206120.9/warc/CC-MAIN-20140423032006-00313-ip-10-147-4-33.ec2... |
Perpendicular to a Plane
Linear Algebra, Perpendicular to a Plane
Perpendicular to a Plane
If v is the vector [3,5,7] in 3 space, the points in the plane 3x+5y+7z = 0 are precisely the points that are perpendicular to v. These are all the vectors w such that v.w = 0.
Given any vector, turn its conponents into coefficie... | {"url":"http://www.mathreference.com/la,perp.html","timestamp":"2014-04-18T02:58:16Z","content_type":null,"content_length":"1976","record_id":"<urn:uuid:b882cb65-8389-4a01-abf0-c3cfed012d35>","cc-path":"CC-MAIN-2014-15/segments/1397609532480.36/warc/CC-MAIN-20140416005212-00000-ip-10-147-4-33.ec2.internal.warc.gz"} |
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List all the real and imaginary zeros of f(x) = x^3+x^2+ 13x -... | {"url":"http://openstudy.com/updates/4fbc3e2ae4b05565343147bc","timestamp":"2014-04-18T20:46:21Z","content_type":null,"content_length":"37651","record_id":"<urn:uuid:fc4cd61e-7a43-4a25-b0f5-94317a9d7e80>","cc-path":"CC-MAIN-2014-15/segments/1397609535095.9/warc/CC-MAIN-20140416005215-00006-ip-10-147-4-33.ec2.internal.w... |
This course is the fifth of a six-quarter sequence of courses that are exploring the essential theoretical foundations of modern physics. The topics covered in this course sequence include classical
mechanics, quantum mechanics, the general and special theories of relativity, electromagnetism, cosmology, and black hole... | {"url":"http://www.newpackettech.com/Resources/Susskind/PHY28/Cosmology_Overview.htm","timestamp":"2014-04-20T15:51:17Z","content_type":null,"content_length":"14087","record_id":"<urn:uuid:5f6fe7d0-6c8f-4d21-8640-baca5ce32b8e>","cc-path":"CC-MAIN-2014-15/segments/1398223206118.10/warc/CC-MAIN-20140423032006-00030-ip-10... |
class groups of unramified cyclic p-extensions of imaginary quadratic fields
up vote 2 down vote favorite
Let $K$ be an imaginary quadratic number field with $p$-Sylow-class group $A(K)$ and $L/K$ be an unramified cyclic extension of $K$ of degree $p$ ($p$ prime). Then I am looking for heuristics on
$ker(N_{L/K}:A(... | {"url":"http://mathoverflow.net/questions/73051/class-groups-of-unramified-cyclic-p-extensions-of-imaginary-quadratic-fields/74364","timestamp":"2014-04-18T18:14:49Z","content_type":null,"content_length":"56777","record_id":"<urn:uuid:c993f184-faf2-4bd0-8974-b036a07dfa76>","cc-path":"CC-MAIN-2014-15/segments/1397609535... |
oh i love these brain exercises!
Assume that y > rx , for all r
Then the set S = {y-rx| r in Z+} consists only of positive numbers. So, S must possess a least element, say y-mx.
But y-(m+1)x also belongs in S, since m+1 is in Z+ if m is.
y-(m+1)x = y-mx - x < y - mx, since x>0, contrary to our choice of the minimal ele... | {"url":"http://www.physicsforums.com/showthread.php?p=238748","timestamp":"2014-04-16T13:45:14Z","content_type":null,"content_length":"25496","record_id":"<urn:uuid:a4f294eb-8d1b-49cd-bf7d-21d565b8f71b>","cc-path":"CC-MAIN-2014-15/segments/1398223206147.1/warc/CC-MAIN-20140423032006-00076-ip-10-147-4-33.ec2.internal.wa... |
Damped LC tank with external excitation
We consider a resistor, an inductance and a cap in series excited by an external AC signal.
This circuit is mathematically described by
Solving the homogeneous part of the differential equation
We solve the homogeneous part of the differential equation Eq. 1 first
using the appor... | {"url":"http://www.advanced-science.com/ElectricalOscillationWithExternalExcitation.html","timestamp":"2014-04-20T15:54:44Z","content_type":null,"content_length":"28040","record_id":"<urn:uuid:38144158-4f70-4781-a04e-178907f3d401>","cc-path":"CC-MAIN-2014-15/segments/1398223205137.4/warc/CC-MAIN-20140423032005-00398-ip... |
Sachse Statistics Tutor
Find a Sachse Statistics Tutor
...I also had a handful of college students and adults that would come to the center for homework support. At Sylvan Learning Center I acquired the necessary skills to not only teach students of
all ages, but also to make the learning experience non-tedious and... | {"url":"http://www.purplemath.com/sachse_tx_statistics_tutors.php","timestamp":"2014-04-17T01:32:51Z","content_type":null,"content_length":"23929","record_id":"<urn:uuid:2c4f4d1c-9230-4a32-9257-602aaa6ab151>","cc-path":"CC-MAIN-2014-15/segments/1397609526102.3/warc/CC-MAIN-20140416005206-00610-ip-10-147-4-33.ec2.intern... |
Use an op amp and a dual SPST to switch signals under digital control.
Liviu Pascu, Kepco, Flushing, NY; Edited by Brad Thompson and Fran Granville -- EDN, 3/30/2006
Many applications require a method of switching an analog or a digital signal on or off under digital ... | {"url":"http://www.kepcopower.com/bufswitch.htm","timestamp":"2014-04-16T07:41:27Z","content_type":null,"content_length":"29731","record_id":"<urn:uuid:78bda4ed-2335-44bb-878b-8d38f435094d>","cc-path":"CC-MAIN-2014-15/segments/1397609521558.37/warc/CC-MAIN-20140416005201-00497-ip-10-147-4-33.ec2.internal.warc.gz"} |
Product To Sum for trigonometry
write: 6sin[theta] * sin6[theta] as a sum or difference. write cos5[theta]+ cos3[theta] as a product
write cos5[theta]+ cos3[theta] as a product Use $cos(u)+cos(v)=2cos\left(\frac{u+v}{2}\right)cos\le ft(\frac{u-v}{2}\right)$ $2cos\left(4{\theta}\right)cos({\theta})$
$\cos^{2m}(x)$ or $\... | {"url":"http://mathhelpforum.com/trigonometry/39329-product-sum-trigonometry.html","timestamp":"2014-04-16T09:13:09Z","content_type":null,"content_length":"62752","record_id":"<urn:uuid:83aed1a3-6274-42bb-897a-30f5b8b885c6>","cc-path":"CC-MAIN-2014-15/segments/1397609521558.37/warc/CC-MAIN-20140416005201-00398-ip-10-14... |
Can we separate Toeplitz matrices for negative and positive eigenvalues?
up vote 0 down vote favorite
Consider a Toeplitz matrix T which has both positive and negative eigenvalues. Can we prove that there exist two Toeplitz matrix T1 and T2 such that T1+T2=T and T1 has only one positive Eigenvalues
and T2 has only neg... | {"url":"http://mathoverflow.net/questions/106002/can-we-separate-toeplitz-matrices-for-negative-and-positive-eigenvalues","timestamp":"2014-04-18T03:49:17Z","content_type":null,"content_length":"51337","record_id":"<urn:uuid:038748d1-e459-4637-b9ff-fedc8b724c4b>","cc-path":"CC-MAIN-2014-15/segments/1397609532480.36/war... |
Why Programmers Need To Learn Statistics
8494952 story
Posted by
from the because-they-suck-at-poker dept.
David Gerard
"Zed Shaw writes an impassioned plea to programmers: Programmers Need To Learn Statistics Or I Will Kill Them All. Quoting: 'I go insane when I hear programmers talking about statistics like they
k... | {"url":"http://developers.slashdot.org/story/10/01/09/2154224/why-programmers-need-to-learn-statistics","timestamp":"2014-04-20T09:06:17Z","content_type":null,"content_length":"369597","record_id":"<urn:uuid:c649a19e-fe92-4e2e-8a8b-ef3ffd020e1d>","cc-path":"CC-MAIN-2014-15/segments/1398223206647.11/warc/CC-MAIN-2014042... |
Big O Notation and Polynomials
Date: 04/12/2001 at 10:17:29
From: Paul Statham
Subject: Big O Notation and polynomials
I have a sample question I have been practicing. It gives the
f(x) = (x^3 - (4x^2) + 12)/(x^2 + 2)
It then asks me to plot this on an Excel worksheet and explain the
behaviour for increasing values ... | {"url":"http://mathforum.org/library/drmath/view/54501.html","timestamp":"2014-04-18T18:39:52Z","content_type":null,"content_length":"8562","record_id":"<urn:uuid:42087407-8c41-49ea-9102-fe0a55277ea8>","cc-path":"CC-MAIN-2014-15/segments/1397609535095.7/warc/CC-MAIN-20140416005215-00328-ip-10-147-4-33.ec2.internal.warc... |
Turing Ppt Presentation
What Computers Can't Compute:
What Computers Can't Compute Dr Nick Benton Queens' College & Microsoft Research nick@microsoft.com
David Hilbert (1862-1943) Hilbert's programme: To establish the foundations of mathematics, in particular by clarifying and justifying use of the infinite: ``The defi... | {"url":"http://www.authorstream.com/Presentation/Ariane-37656-turing-Computers-Compute-as-Entertainment-ppt-powerpoint/","timestamp":"2014-04-17T12:35:32Z","content_type":null,"content_length":"141659","record_id":"<urn:uuid:42c3289a-9bd5-424b-92b0-8bcb34b36812>","cc-path":"CC-MAIN-2014-15/segments/1397609530131.27/war... |
[SciPy-user] weave and compiler install help
Michael ODonnell odonnems@yahoo....
Mon Dec 3 15:30:54 CST 2007
This may help give someone greater insight into my problem. If I run the command created by python:
cl.exe /c /nologo /Ox /MD /W3 /GX /DNDEBUG -IC:\Python24\lib\site-packages\scipy\weave -IC:\Python24\lib\site-p... | {"url":"http://mail.scipy.org/pipermail/scipy-user/2007-December/014715.html","timestamp":"2014-04-16T14:34:39Z","content_type":null,"content_length":"7695","record_id":"<urn:uuid:92f922e3-ef20-4276-a952-1e4950285013>","cc-path":"CC-MAIN-2014-15/segments/1398223202774.3/warc/CC-MAIN-20140423032002-00415-ip-10-147-4-33.... |
ALEX Lesson Plans
Subject: Mathematics (9 - 12)
Title: Figure it out...
Description: This is an Internet-based (online) and group discussion lesson. Students will learn the formulas for surface area and volume of cylinders and cones. Students should have previously
learned how to determine the area for a circle; howeve... | {"url":"http://alex.state.al.us/all.php?std_id=54233","timestamp":"2014-04-20T08:15:27Z","content_type":null,"content_length":"81863","record_id":"<urn:uuid:481d6fb7-354d-4508-9e7c-eb4995e00e3c>","cc-path":"CC-MAIN-2014-15/segments/1398223211700.16/warc/CC-MAIN-20140423032011-00155-ip-10-147-4-33.ec2.internal.warc.gz"} |
[SciPy-Dev] import scipy.stats hangs in mod_python application
josef.pktd@gmai... josef.pktd@gmai...
Tue Sep 6 18:28:00 CDT 2011
On Tue, Sep 6, 2011 at 6:52 PM, fork <forkandwait@gmail.com> wrote:
> <josef.pktd <at> gmail.com> writes:
>> I have no idea about the actual problem, but scipy.stats requires or
>> loads man... | {"url":"http://mail.scipy.org/pipermail/scipy-dev/2011-September/016501.html","timestamp":"2014-04-19T14:45:19Z","content_type":null,"content_length":"4560","record_id":"<urn:uuid:4587bb8b-9973-4250-b5f5-07802c06d75e>","cc-path":"CC-MAIN-2014-15/segments/1397609537271.8/warc/CC-MAIN-20140416005217-00073-ip-10-147-4-33.... |
the encyclopedic entry of Algebraic variety
This article is about algebraic varieties. For the term "a variety of algebras", and an explanation of the difference between a variety of algebras and an algebraic variety, see variety
(universal algebra).
In mathematics, an algebraic variety is essentially a (finite... | {"url":"http://www.reference.com/browse/Algebraic+variety","timestamp":"2014-04-19T21:37:12Z","content_type":null,"content_length":"98521","record_id":"<urn:uuid:2f759c5a-5b6f-4793-a100-0045732cddbe>","cc-path":"CC-MAIN-2014-15/segments/1397609537376.43/warc/CC-MAIN-20140416005217-00099-ip-10-147-4-33.ec2.internal.warc... |
Lomita Statistics Tutor
Find a Lomita Statistics Tutor
...I try to adjust my teaching style so that my presentation will be as clear and as easily understood as possible by tailoring my delivery to the student's most natural and preferred learning
mode, which is technically called a "modality" in many education cir... | {"url":"http://www.purplemath.com/Lomita_Statistics_tutors.php","timestamp":"2014-04-20T08:47:00Z","content_type":null,"content_length":"23886","record_id":"<urn:uuid:f1a75409-75e3-4356-80d7-a09cf36381a2>","cc-path":"CC-MAIN-2014-15/segments/1397609538110.1/warc/CC-MAIN-20140416005218-00608-ip-10-147-4-33.ec2.internal.... |
What Can Systems Theory of Networks Offer to Biology?
Citation: Rajapakse I, Groudine M, Mesbahi M (2012) What Can Systems Theory of Networks Offer to Biology? PLoS Comput Biol 8(6): e1002543. doi:10.1371/journal.pcbi.1002543
Editor: Olaf Sporns, Indiana University, United States of America
Published: June 28, 2012
Cop... | {"url":"http://www.ploscompbiol.org/article/info%3Adoi%2F10.1371%2Fjournal.pcbi.1002543","timestamp":"2014-04-23T15:14:14Z","content_type":null,"content_length":"62588","record_id":"<urn:uuid:989efd03-fa95-467f-8b81-7fc83e546f9b>","cc-path":"CC-MAIN-2014-15/segments/1398223202774.3/warc/CC-MAIN-20140423032002-00141-ip-... |
grop of order p^3 , group homomorphism
November 23rd 2010, 01:19 PM #1
Nov 2010
grop of order p^3 , group homomorphism
Prove that if p is an odd prime and P is a group of order $p^{3}$ then the $p^{th}$ power map $x -> x^{p}$ is a homomorphism of P into Z(P). If P is not cyclic , show that the kernel of the $p^... | {"url":"http://mathhelpforum.com/advanced-algebra/164198-grop-order-p-3-group-homomorphism.html","timestamp":"2014-04-17T16:46:27Z","content_type":null,"content_length":"74001","record_id":"<urn:uuid:d6e560c7-5a05-45e6-86c6-5bf7b3666b77>","cc-path":"CC-MAIN-2014-15/segments/1398223211700.16/warc/CC-MAIN-20140423032011-... |
Browse by Author
Number of items: 2.
Liaw, S
Liu, R. T. and Liaw, S. S. and Maini, P. K. (2007) Oscillatory Turing Patterns in a Simple Reaction-Diffusion System. Journal of the Korean Physical Society, 50 (1). pp. 234-238.
Liu, R. T. and Liaw, S. S. and Maini, P. K. (2006) Two-stage Turing model for generating pigment... | {"url":"http://eprints.maths.ox.ac.uk/view/author/Liaw=3AS=2E_S=2E=3A=3A.html","timestamp":"2014-04-20T03:11:55Z","content_type":null,"content_length":"9691","record_id":"<urn:uuid:84559234-d44a-4ae6-91ad-c3d8e38a7a4f>","cc-path":"CC-MAIN-2014-15/segments/1397609537864.21/warc/CC-MAIN-20140416005217-00357-ip-10-147-4-3... |
cs343 p. 96
Admissibility of Heuristic Function
A search algorithm is admissible if it always finds an optimal solution path if a solution path exists.
It can be shown[Nilsson, Principles of Artificial Intelligence, Morgan Kaufmann Publishers, 1980.] that the ordered search algorithm, using the heuristic function
... | {"url":"http://www.cs.utexas.edu/~novak/cs34396.html","timestamp":"2014-04-18T09:49:49Z","content_type":null,"content_length":"1751","record_id":"<urn:uuid:f3773af8-3d0d-4071-8c6f-efaaf35b08ec>","cc-path":"CC-MAIN-2014-15/segments/1397609533121.28/warc/CC-MAIN-20140416005213-00387-ip-10-147-4-33.ec2.internal.warc.gz"} |
Posts by
Posts by len
Total # Posts: 22
physical acience
Compute the density in g/cm3 of a piece of metal that has a mass of 0.360 kg and a volume of 74 cm3.
A cylinder must move a 2000 lb load 2 ft. How much work must it perform?
differential calculus
a bed is in a form of a circular sector. find its radius if the ar... | {"url":"http://www.jiskha.com/members/profile/posts.cgi?name=len","timestamp":"2014-04-19T04:23:30Z","content_type":null,"content_length":"9609","record_id":"<urn:uuid:a9273061-5d2a-4d44-88f4-b8c809b3c77e>","cc-path":"CC-MAIN-2014-15/segments/1397609535775.35/warc/CC-MAIN-20140416005215-00632-ip-10-147-4-33.ec2.interna... |
Next: Ancestors Up: What to look Previous: Cycles
The rows of the period-cycle table can be found from de Bruijn diagrams in the same way that the cycles can be found from the evolution diagram; since 2r+1 cells are needed to deduce a generation of
evolution, only about half as many periods as cycles can be worked out ... | {"url":"http://delta.cs.cinvestav.mx/~mcintosh/oldweb/lcau/node15.html","timestamp":"2014-04-21T09:43:56Z","content_type":null,"content_length":"5216","record_id":"<urn:uuid:7be07cbc-6a07-49df-bdc1-0872e864d3e2>","cc-path":"CC-MAIN-2014-15/segments/1398223202774.3/warc/CC-MAIN-20140423032002-00503-ip-10-147-4-33.ec2.in... |
Below are the first 10 and last 10 pages of uncorrected machine-read text (when available) of this chapter, followed by the top 30 algorithmically extracted key phrases from the chapter as a whole.
Intended to provide our own search engines and external engines with highly rich, chapter-representative searchable text o... | {"url":"http://www.nap.edu/openbook.php?record_id=1835&page=89","timestamp":"2014-04-17T22:26:41Z","content_type":null,"content_length":"60886","record_id":"<urn:uuid:aff3b7d9-db55-4305-a50b-8c1930b4c43a>","cc-path":"CC-MAIN-2014-15/segments/1397609532128.44/warc/CC-MAIN-20140416005212-00526-ip-10-147-4-33.ec2.internal... |
Can a Metropolis sampler be tricked to walk into the wrong direction for extended periods of time?
I'm using a Metropolis sampler to approximate the joint probability of the data likelihood and a Gaussian prior over the parameters p(X|theta)p(theta). When I use a fake prior that is always equal
to 1, the algorithm be... | {"url":"http://metaoptimize.com/qa/questions/4116/can-a-metropolis-sampler-be-tricked-to-walk-into-the-wrong-direction-for-extended-periods-of-time","timestamp":"2014-04-19T06:59:54Z","content_type":null,"content_length":"26762","record_id":"<urn:uuid:12f8d67c-ac8b-4542-8fdc-f7bd01d2d09f>","cc-path":"CC-MAIN-2014-15/se... |
La Mesa, CA Statistics Tutor
Find a La Mesa, CA Statistics Tutor
...This results in a more practical understanding of the area. During this tenure, I mentored “students” from many walks of life and disciplines allowing them to become facile users of statistics
in their education or profession. While I used many sta... | {"url":"http://www.purplemath.com/La_Mesa_CA_Statistics_tutors.php","timestamp":"2014-04-20T16:27:05Z","content_type":null,"content_length":"24046","record_id":"<urn:uuid:5720b66e-5c9d-47f7-86fa-c8f47a0411e8>","cc-path":"CC-MAIN-2014-15/segments/1397609538824.34/warc/CC-MAIN-20140416005218-00601-ip-10-147-4-33.ec2.inte... |
Summary: A SHARP NON-CONVEXITY BOUND FOR PARTITION
University of North Texas, Denton, TX 76203
Abstract. A sharp upper bound is given for the degree of non-convexity of
the partition range of a nite-dimensional vector measure, in terms of the
maximum (one-dimensional) mass of the atoms of that measure. This upper
bound... | {"url":"http://www.osti.gov/eprints/topicpages/documents/record/932/2721600.html","timestamp":"2014-04-16T23:01:11Z","content_type":null,"content_length":"8023","record_id":"<urn:uuid:3a34d1fc-4f5e-4154-a3e4-428205118dfd>","cc-path":"CC-MAIN-2014-15/segments/1398223205375.6/warc/CC-MAIN-20140423032005-00109-ip-10-147-4... |
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Topic: Any way to get gradient lines as well as contour lines?
Replies: 0
Any way to get gradient lines as we... | {"url":"http://mathforum.org/kb/thread.jspa?threadID=2432622&messageID=8244189","timestamp":"2014-04-17T03:50:14Z","content_type":null,"content_length":"14238","record_id":"<urn:uuid:a3111044-6af4-4733-89f6-a2b3e9144c94>","cc-path":"CC-MAIN-2014-15/segments/1397609526252.40/warc/CC-MAIN-20140416005206-00580-ip-10-147-4... |
College Park
Find a College Park Precalculus Tutor
...Between 2006 and 2011 I was a research assistant at the University of Wyoming and I used to cover my advisor’s graduate level classes from time to time. And, since August 2012 I have tutored
math (from prealgebra to calculus II), chemistry and physics for mid- ... | {"url":"http://www.purplemath.com/college_park_md_precalculus_tutors.php","timestamp":"2014-04-17T13:16:15Z","content_type":null,"content_length":"24397","record_id":"<urn:uuid:139ad8ef-f0dd-4736-84da-8ff0015aba54>","cc-path":"CC-MAIN-2014-15/segments/1397609530131.27/warc/CC-MAIN-20140416005210-00636-ip-10-147-4-33.ec... |
Understand 3 critical steps in developing logistic regression models
Logistic regression is a powerful tool for addressing classification problems. However it is also not the easiest of concepts for many beginners to grasp. There are three related steps which need to
be fully grasped to be able to understand the workin... | {"url":"http://www.simafore.com/blog/bid/99443/Understand-3-critical-steps-in-developing-logistic-regression-models","timestamp":"2014-04-19T11:56:15Z","content_type":null,"content_length":"72251","record_id":"<urn:uuid:685d2bbc-b28d-401b-aed2-cb23cc217d62>","cc-path":"CC-MAIN-2014-15/segments/1397609537186.46/warc/CC-... |
Sorting in functional programming languages
up vote 13 down vote favorite
I've been learning functional programming for some time, but I haven't read somewhere about sorting with the functional programming languages.
I know the sorting algorithms that are based on value exchanges are hard to implement with the function... | {"url":"http://stackoverflow.com/questions/4574279/sorting-in-functional-programming-languages/4574358","timestamp":"2014-04-18T03:37:10Z","content_type":null,"content_length":"101941","record_id":"<urn:uuid:3c38b62c-a32c-46ed-bc6e-55a187c5c998>","cc-path":"CC-MAIN-2014-15/segments/1398223206120.9/warc/CC-MAIN-20140423... |
La Porte Math Tutor
Find a La Porte Math Tutor
I was born in Taiwan. I graduated from No.1 university in Taiwan, majored in Economics and came to the USA to pursue an MBA at Lamar University in 1988. I am a loving and patient Christian mom of
three children.
12 Subjects: including algebra 1, algebra 2, vocabulary... | {"url":"http://www.purplemath.com/La_Porte_Math_tutors.php","timestamp":"2014-04-18T14:19:30Z","content_type":null,"content_length":"23726","record_id":"<urn:uuid:0c64d0ac-f4d3-47c3-aa28-ee9ce601b232>","cc-path":"CC-MAIN-2014-15/segments/1398223201753.19/warc/CC-MAIN-20140423032001-00457-ip-10-147-4-33.ec2.internal.war... |
Circumference and 44 & Pi
Back to Home Page or Contents Page or Roger Jimmo Page or Divination or Index
Blog: The New "Alphabets Code"
Circumference and 44 & Pi
... | {"url":"http://www.themystica.com/mystica/articles/c/circumference_and_44_%26_pi.html","timestamp":"2014-04-17T07:13:29Z","content_type":null,"content_length":"2997","record_id":"<urn:uuid:9a360b98-cd1b-4624-b4fd-a72da17f9242>","cc-path":"CC-MAIN-2014-15/segments/1397609526311.33/warc/CC-MAIN-20140416005206-00617-ip-10... |
Why do we need finiteness conditions for formally étale morphisms?
up vote 4 down vote favorite
It follows from a recent answer that even when a ring is formally étale rather than étale, we can check this condition on localizations, and hence stalks. It's not hard to show that we can define a
"formally étale" topology ... | {"url":"http://mathoverflow.net/questions/18551/why-do-we-need-finiteness-conditions-for-formally-etale-morphisms","timestamp":"2014-04-17T01:10:04Z","content_type":null,"content_length":"61278","record_id":"<urn:uuid:991db4bd-201c-4745-b7ac-d4c3445d22e1>","cc-path":"CC-MAIN-2014-15/segments/1397609526102.3/warc/CC-MAI... |
La Porte Math Tutor
Find a La Porte Math Tutor
I was born in Taiwan. I graduated from No.1 university in Taiwan, majored in Economics and came to the USA to pursue an MBA at Lamar University in 1988. I am a loving and patient Christian mom of
three children.
12 Subjects: including algebra 1, algebra 2, vocabulary... | {"url":"http://www.purplemath.com/La_Porte_Math_tutors.php","timestamp":"2014-04-18T14:19:30Z","content_type":null,"content_length":"23726","record_id":"<urn:uuid:0c64d0ac-f4d3-47c3-aa28-ee9ce601b232>","cc-path":"CC-MAIN-2014-15/segments/1397609533689.29/warc/CC-MAIN-20140416005213-00457-ip-10-147-4-33.ec2.internal.war... |
Infinite Series of 2F1
MathOverflow is a question and answer site for professional mathematicians. It's 100% free, no registration required.
I will be grateful for any ideas to solve the series
$$\sum^\infty_{k=0}\frac{x^k z^k}{k!} \frac{\Gamma(1+a+2k)}{\Gamma(2... | {"url":"http://mathoverflow.net/questions/94120/infinite-series-of-2f1","timestamp":"2014-04-17T07:04:39Z","content_type":null,"content_length":"51468","record_id":"<urn:uuid:c1970d38-b65f-484b-941f-ddc9c6e39a2f>","cc-path":"CC-MAIN-2014-15/segments/1397609526311.33/warc/CC-MAIN-20140416005206-00414-ip-10-147-4-33.ec2.... |
mary jane on Calaméo
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Pub. on June 21st 2011
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Pub. on May 12th 2011
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Fisher's LSD test on transformed data: valid backtransformation of the LSD valiue
October 15th 2012, 06:08 AM #1
Oct 2012
Fisher's LSD test on transformed data: valid backtransformation of the LSD valiue
Hi all,
To achieve a normal distribution of my experimental data, I did a transformation using the formu... | {"url":"http://mathhelpforum.com/advanced-statistics/205362-fisher-s-lsd-test-transformed-data-valid-backtransformation-lsd-valiue.html","timestamp":"2014-04-19T11:01:52Z","content_type":null,"content_length":"41365","record_id":"<urn:uuid:59bac742-c5e2-479f-8482-79639800b6a4>","cc-path":"CC-MAIN-2014-15/segments/13976... |
Posts by
Posts by geri
Total # Posts: 13
A tent is shaped like a pyramid. It has a square base measuring 8 feet on a side and a height of 6 feet. What is the volume of the tent?
Discuss the role of advertising in product differentiation and the intent of advertising in altering the firm s demand curve
world history
ho... | {"url":"http://www.jiskha.com/members/profile/posts.cgi?name=geri","timestamp":"2014-04-20T19:35:03Z","content_type":null,"content_length":"8924","record_id":"<urn:uuid:bb6bc225-89af-4196-83fb-fae71886e96c>","cc-path":"CC-MAIN-2014-15/segments/1397609539066.13/warc/CC-MAIN-20140416005219-00026-ip-10-147-4-33.ec2.intern... |
Unique Aspects and Scientific Challenges
High Energy Physics (HEP)
Theoretical Physics
Unique Aspects and Scientific Challenges
High Energy Theory
Unique Aspects:
The research activities supported by the Theoretical Physics subprogram include, but not limited to: precision calculations of Standard Model processes, deve... | {"url":"http://science.energy.gov/hep/research/theoretical-physics/unique-aspects-and-scientific-challenges/","timestamp":"2014-04-17T07:31:15Z","content_type":null,"content_length":"40234","record_id":"<urn:uuid:ecb0d61a-8b99-48eb-baef-3699c18dbaa1>","cc-path":"CC-MAIN-2014-15/segments/1398223203422.8/warc/CC-MAIN-201... |
Where is f(x) concave and convex?
August 26th 2009, 01:24 PM #1
Nov 2007
Where is f(x) concave and convex?
I have this function $f(x)=1,2x^5-4x^3$ and I need to give the intervals where the function's graph is concave and convex.
I know $f'(x)=0$ when $x=\sqrt{2}$, $x=-\sqrt{2}$ and $x=0$
Thanks in adva... | {"url":"http://mathhelpforum.com/calculus/99325-where-f-x-concave-convex.html","timestamp":"2014-04-17T02:06:39Z","content_type":null,"content_length":"36793","record_id":"<urn:uuid:ba7edbae-aea8-4496-833e-e19f7cfd2da5>","cc-path":"CC-MAIN-2014-15/segments/1397609526252.40/warc/CC-MAIN-20140416005206-00403-ip-10-147-4-... |
Simple Proof table problem
September 28th 2013, 04:16 PM #1
Sep 2013
Simple Proof table problem
For some reason I can't wrap my head around this one...
I am supposed to use truth tables to explain expressions like
x ⊕ 1 = x
x ⊕ 1 = xnot
x ⊕ 0 = x
etc, etc.
Obviously I can do something li... | {"url":"http://mathhelpforum.com/discrete-math/222370-simple-proof-table-problem.html","timestamp":"2014-04-17T18:34:46Z","content_type":null,"content_length":"55815","record_id":"<urn:uuid:974f7387-2e33-450e-ac2a-8ac72ca751a9>","cc-path":"CC-MAIN-2014-15/segments/1397609530895.48/warc/CC-MAIN-20140416005210-00634-ip-1... |
group homotopy
If group cohomology studies morphism between Eilenberg-MacLane objects /spaces $[K(A, n), K(B, m)]$, usually in the case $n = 1$, one might imagine group homotopy would study $[M(A, n), M(B, m)]$,
especially for $m = 1$, where the $M(A, n)$ are Moore spaces. (Or should we take co-Moore spaces?)
One diffe... | {"url":"http://www.ncatlab.org/nlab/show/group+homotopy","timestamp":"2014-04-20T15:52:14Z","content_type":null,"content_length":"19180","record_id":"<urn:uuid:ee7ca303-3a2f-40af-bc56-9ddf8d47cdb0>","cc-path":"CC-MAIN-2014-15/segments/1398223210034.18/warc/CC-MAIN-20140423032010-00271-ip-10-147-4-33.ec2.internal.warc.g... |
A Cookbook For Spacetime - No Big Bang Needed
As you know, when heat in soup is increased, it will eventually boil.
When time and space are heated, an expanding universe can emerge, without requiring anything like a "Big Bang", according to a new math paper.
The math behind this phase transition between a boring empty ... | {"url":"http://www.science20.com/news_articles/cookbook_spacetime_no_big_bang_needed-126078","timestamp":"2014-04-19T12:25:49Z","content_type":null,"content_length":"43440","record_id":"<urn:uuid:4b46edb7-924f-412d-a687-5b67ea158b82>","cc-path":"CC-MAIN-2014-15/segments/1397609537186.46/warc/CC-MAIN-20140416005217-0002... |
PDF Ebooks for Search word 'ecet Mathematics Chemistry Physics model papers'
Mathematical Methods for Physics and Engineering : A Comprehensive ...
ence of teaching mathematics and physics to undergraduate and pre-universtiy ...... university and college courses, particularly in physics, engineering and ... http://www.... | {"url":"http://www.downloadpdffree.com/ecet-Mathematics-Chemistry-Physics-model-papers.pdf/10","timestamp":"2014-04-19T19:34:52Z","content_type":null,"content_length":"44714","record_id":"<urn:uuid:3f5ef46c-161e-40d1-b233-a140ddbfbc2b>","cc-path":"CC-MAIN-2014-15/segments/1397609537376.43/warc/CC-MAIN-20140416005217-00... |
Consider And LTI System With Input X(n) = U(n), ... | Chegg.com
Consider and LTI system with input x(n) = u(n), and output
y(n) - 0.5y(n-1) - 16x(n-3) = x(n-1) + 8x(n-2)
(1) Find H(z), the z-transform of the system impulse response, and plot its pole-zero diagram (including the ROC). Assume x(n) and y(n) are right side... | {"url":"http://www.chegg.com/homework-help/questions-and-answers/consider-lti-system-input-x-n-u-n-output-y-n-05y-n-1-16x-n-3-x-n-1-8x-n-2-1-find-h-z-z-tra-q1916279","timestamp":"2014-04-18T17:17:10Z","content_type":null,"content_length":"20781","record_id":"<urn:uuid:5c9a3025-5bc1-455e-9216-8a8d74154d5e>","cc-path":"C... |
54127039 journal
Ok, I need to expand a bit on my excessively long post on education some time back.
The first thing I am going to clarify is streaming. This is not merely distinction by speed, which is the normal (and therefore wrong) approach. You have to distinguish by the nature of the flows. In
practice, this mean... | {"url":"http://slashdot.org/~MikeBabcock/journal/friends","timestamp":"2014-04-25T02:56:33Z","content_type":null,"content_length":"119201","record_id":"<urn:uuid:306f03e9-bb97-4ac6-8cb3-5c0c8241755f>","cc-path":"CC-MAIN-2014-15/segments/1398223207985.17/warc/CC-MAIN-20140423032007-00053-ip-10-147-4-33.ec2.internal.warc... |
??? Undefined function or variable 'PathName'.
hi all Can you help provide solutions I tried to call data from txt file disp(input('input, press enter')) [FileName.PathName]=uigetfile(('*.txt'), 'browser file') fileToRead=fullfile
(PathName,FileName) propil=importdata(fileToRead) FileName = PathName: 'prop.txt' ??? Und... | {"url":"http://compgroups.net/comp.soft-sys.matlab/-undefined-function-or-variable-pathname/423226","timestamp":"2014-04-21T05:01:19Z","content_type":null,"content_length":"36152","record_id":"<urn:uuid:d0e809c8-1a55-4190-85ef-9863c20282ff>","cc-path":"CC-MAIN-2014-15/segments/1398223210034.18/warc/CC-MAIN-201404230320... |
Least Squares in Gaussian Noise – Maximum Likelihood
From the previous posts on Linear Regression (using Batch Gradient descent, Stochastic Gradient Descent, Closed form solution), we discussed couple of different ways to estimate the parameter vector
in the least square error sense for the given training set. However... | {"url":"http://www.dsplog.com/2012/01/15/least-squares-gaussian-noise-maximum-likelihood/","timestamp":"2014-04-17T18:47:01Z","content_type":null,"content_length":"64801","record_id":"<urn:uuid:cdbdcaaa-a91f-435e-bf32-1d3fcd6d1acc>","cc-path":"CC-MAIN-2014-15/segments/1398223202548.14/warc/CC-MAIN-20140423032002-00028-... |
Walk Like a Sabermetrician
In the previous post I briefly mentioned my dislike of the five-game series format currently used in the Division Series and formerly used in the LCS. But what is the real difference between a five
and seven game series? If we make some simple assumptions about team quality, how often will th... | {"url":"http://walksaber.blogspot.com/2009_09_01_archive.html","timestamp":"2014-04-20T04:00:24Z","content_type":null,"content_length":"129506","record_id":"<urn:uuid:24819788-a514-4e73-8175-b6af858c7449>","cc-path":"CC-MAIN-2014-15/segments/1398223206647.11/warc/CC-MAIN-20140423032006-00550-ip-10-147-4-33.ec2.internal... |
Math Forum Discussions
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Topic: Algebra I, Geometry, Algebra II
Replies: 2 Last Post: Feb 16, 1995 3:25 PM
Messages: [ Previous ... | {"url":"http://mathforum.org/kb/message.jspa?messageID=1472969","timestamp":"2014-04-18T23:53:05Z","content_type":null,"content_length":"19954","record_id":"<urn:uuid:187c3f8d-c846-4ecb-99f2-3d9404ef8a75>","cc-path":"CC-MAIN-2014-15/segments/1397609539493.17/warc/CC-MAIN-20140416005219-00612-ip-10-147-4-33.ec2.internal... |
Algorithmic Information as a Fundamental Concept in
Physics, Mathematics and Biology
Algorithmic Information as a Fundamental Concept in Physics, Mathematics and Biology
Institute for Quantum Computing, Wednesday, 23 September 2009
G. J. Chaitin, IBM Research
Abstract: The concept of information is not only fundamenta... | {"url":"https://www.cs.auckland.ac.nz/~chaitin/iqc.html","timestamp":"2014-04-18T18:38:12Z","content_type":null,"content_length":"24753","record_id":"<urn:uuid:be03f330-570c-467f-b15c-262d43ea52c6>","cc-path":"CC-MAIN-2014-15/segments/1398223211700.16/warc/CC-MAIN-20140423032011-00488-ip-10-147-4-33.ec2.internal.warc.g... |
adjective \ˈē-kwəl\
: the same in number, amount, degree, rank, or quality
: having the same mathematical value
: not changing : the same for each person
Full Definition of EQUAL
a (1) : of the same measure, quantity, amount, or number as another (2) : identical in mathematical value or logical denotation : equivale... | {"url":"http://www.merriam-webster.com/dictionary/equal","timestamp":"2014-04-17T09:52:34Z","content_type":null,"content_length":"106503","record_id":"<urn:uuid:e54b7935-6f3b-4611-9317-fb1183b3e6de>","cc-path":"CC-MAIN-2014-15/segments/1397609527423.39/warc/CC-MAIN-20140416005207-00117-ip-10-147-4-33.ec2.internal.warc.... |
The Sine Addition Formulas - Problem 1
We're talking about the sine addition formulas. Right now I want to do an example that uses the sine of a sum formula and if you recall the sine of a sum is the sine of alpha plus beta equals and the
way to remember the sine of a sum formula is sine cosine cosine sine, sine alpha ... | {"url":"https://www.brightstorm.com/math/trigonometry/advanced-trigonometry/the-sine-addition-formulas-problem-1/","timestamp":"2014-04-17T01:11:56Z","content_type":null,"content_length":"64879","record_id":"<urn:uuid:4e027f9c-2b3d-4c6e-8364-18ecc162f1dd>","cc-path":"CC-MAIN-2014-15/segments/1398223204388.12/warc/CC-MA... |
Software Simplifies Sizing of Servomotors
Richard W. Armstrong, Jr.
Training Manager
Kollmorgen Motion Technologies Group
Radford, Va
Motion-control system designers agree that motors must match loads both mechanically and electrically. And motor manufacturers offer guidelines and software packages to help engineers d... | {"url":"http://machinedesign.com/print/archive/software-simplifies-sizing-servomotors","timestamp":"2014-04-16T19:45:44Z","content_type":null,"content_length":"33358","record_id":"<urn:uuid:497c2503-a793-4d23-979e-2d28aada4e89>","cc-path":"CC-MAIN-2014-15/segments/1397609524644.38/warc/CC-MAIN-20140416005204-00463-ip-1... |
18 May 1998 Vol. 3, No. 20
THE MATH FORUM INTERNET NEWS
Aunty Math | Crystallography - Weber | Euclid's Elements
AUNTY MATH - DuPage Children's Museum
An every-other-week math challenge for grades K-3 from
"Aunty Math." Each challenge is presented in the f... | {"url":"http://mathforum.org/electronic.newsletter/mf.intnews3.20.html","timestamp":"2014-04-20T14:09:59Z","content_type":null,"content_length":"9415","record_id":"<urn:uuid:da3f5fc9-4238-4961-88a5-ee4e616c5843>","cc-path":"CC-MAIN-2014-15/segments/1397609538787.31/warc/CC-MAIN-20140416005218-00550-ip-10-147-4-33.ec2.i... |
Solving sum
Start with the binomial expansion $(p+q)^n = \sum_{k=0}^{n}\binom{n}{k}p^kq^{n-k}.$ Differentiate partially with respect to p (keeping q constant), then multiply both sides by p. That will give $np
(p+q)^{n-1} = \sum_{k=0}^{n}\binom nk kp^kq^{n-k}.$ Now do the same thing again: $np(p+q)^{n-1} + n(n-1)p^2(p+... | {"url":"http://mathhelpforum.com/calculus/192418-solving-sum.html","timestamp":"2014-04-17T10:32:41Z","content_type":null,"content_length":"34060","record_id":"<urn:uuid:636ec464-4539-4742-979d-7468bfc0e9f3>","cc-path":"CC-MAIN-2014-15/segments/1397609527423.39/warc/CC-MAIN-20140416005207-00259-ip-10-147-4-33.ec2.inter... |
Determining the space complexity of van Emde Boas trees
up vote 1 down vote favorite
We call S(u) the space complexity of the vEB tree holding elements in the range 0 to u-1, and suppose without loss of generality that u is of the form 2^2^k.
It's easy to get the recurrence S(u^2) = (1+u) S(u) + Θ(u). (In Wikipedia's a... | {"url":"http://mathoverflow.net/questions/2245/determining-the-space-complexity-of-van-emde-boas-trees?answertab=votes","timestamp":"2014-04-20T11:23:38Z","content_type":null,"content_length":"65264","record_id":"<urn:uuid:dad4a09c-992e-4009-b31d-1f29220bc6c7>","cc-path":"CC-MAIN-2014-15/segments/1398223203841.5/warc/C... |
[SciPy-user] PyDSTool and SciPy (integrators)
Gabriel Gellner ggellner@uoguelph...
Thu Apr 17 19:28:13 CDT 2008
> The pieces that look most useful to me for inclusion in SciPy are the
> integrators, as you say. But it's not clear to me why I should prefer
> dopri853 or radau5 to the Adams integrator built in to scipy. ... | {"url":"http://mail.scipy.org/pipermail/scipy-user/2008-April/016377.html","timestamp":"2014-04-17T22:38:38Z","content_type":null,"content_length":"8510","record_id":"<urn:uuid:5bd5e761-329d-49c4-aecf-98b082e9cd15>","cc-path":"CC-MAIN-2014-15/segments/1397609532128.44/warc/CC-MAIN-20140416005212-00275-ip-10-147-4-33.ec... |
Subtracting With Borrowing
Subtracting With Borrowing (Regrouping)
After you learn how to subtract, you'll run into harder problems in which you'll need to borrow before you can complete subtraction. You'll need to borrow when the top number of your subtraction
problem is not large enough to complete the subtraction o... | {"url":"http://www.wyzant.com/resources/lessons/math/elementary_math/subtraction/subtracting_with_borrowing","timestamp":"2014-04-20T21:40:12Z","content_type":null,"content_length":"86746","record_id":"<urn:uuid:840c35ad-f123-4708-b137-04b03920a6d2>","cc-path":"CC-MAIN-2014-15/segments/1397609539230.18/warc/CC-MAIN-201... |
Math Forum Discussions - Matheology § 175
Date: Dec 9, 2012 5:06 AM
Author: mueckenh@rz.fh-augsburg.de
Subject: Matheology § 175
Matheology § 175
Until then, no one envisioned the possibility that infinities come in
different sizes, and moreover, mathematicians had no use for ?actual
infinity.? The arguments using infi... | {"url":"http://mathforum.org/kb/plaintext.jspa?messageID=7934397","timestamp":"2014-04-17T04:10:40Z","content_type":null,"content_length":"2101","record_id":"<urn:uuid:adbc67d4-c583-4824-aeba-047e9b845a4a>","cc-path":"CC-MAIN-2014-15/segments/1397609526252.40/warc/CC-MAIN-20140416005206-00628-ip-10-147-4-33.ec2.interna... |
Harwood Heights Algebra 2 Tutor
Find a Harwood Heights Algebra 2 Tutor
...I've been tutoring test prep for 15 years, and I have a lot of experience helping students get the score they need on the ACT. I've helped students push past the 30 mark, or just bring up one
part of their score to push up their overall score... | {"url":"http://www.purplemath.com/Harwood_Heights_Algebra_2_tutors.php","timestamp":"2014-04-18T08:29:01Z","content_type":null,"content_length":"24341","record_id":"<urn:uuid:91155949-fcd4-4658-b347-780254ced88b>","cc-path":"CC-MAIN-2014-15/segments/1397609533121.28/warc/CC-MAIN-20140416005213-00255-ip-10-147-4-33.ec2.... |
Posts by
Total # Posts: 17,499
english (?)
No following words. Cannot copy and paste.
algebra (?)
You need to compete the problem. Cannot copy and paste.
SCIENCE (?)
What are your choices? person? free thinker?
Same process as previous post.
1/3 * 3/4 = ? Canot draw on these posts.
It can also include 8.601, 8.602, et... | {"url":"http://www.jiskha.com/members/profile/posts.cgi?name=PsyDAG&page=6","timestamp":"2014-04-20T09:14:38Z","content_type":null,"content_length":"24311","record_id":"<urn:uuid:508c8996-4ab7-4ba6-b5b7-066848462dfd>","cc-path":"CC-MAIN-2014-15/segments/1397609538110.1/warc/CC-MAIN-20140416005218-00325-ip-10-147-4-33.e... |
1. From past records it is known that the average life of a battery used in a digital clock is 305 days. The battery life is normally distributed. The battery was recently modified to last longer. A
sample of 20 of the modified batteries was tested. It was discovered that the mean life was 311 days and the sample stand... | {"url":"http://www.drbenniewaller.com/online/statistics/quizzes/quiz10.asp","timestamp":"2014-04-21T09:39:45Z","content_type":null,"content_length":"18852","record_id":"<urn:uuid:eeb8402b-ef31-4157-a349-e5673c023d1a>","cc-path":"CC-MAIN-2014-15/segments/1398223206120.9/warc/CC-MAIN-20140423032006-00336-ip-10-147-4-33.e... |
Percentage Volume Oscillator
The Percentage Volume Oscillator (PVO) is a momentum oscillator for volume. PVO measures the difference between two volume-based moving averages as a percentage of the larger moving average. As with
MACD and the Percentage Price Oscillator (PPO), it is shown with a signal line, a histogram ... | {"url":"http://www.stockcharts.com/school/doku.php?id=chart_school:technical_indicators:percentage_volume_os","timestamp":"2014-04-20T10:53:44Z","content_type":null,"content_length":"28466","record_id":"<urn:uuid:c2e38acc-73df-4603-a130-bd81bbd234c5>","cc-path":"CC-MAIN-2014-15/segments/1398223205137.4/warc/CC-MAIN-201... |
From MSCwiki
Revision as of 06:20, 16 August 2007; view current revision
←Older revision
| Newer revision→
26Bxx Functions of several variables {Info & Stats}
• 26B05 Continuity and differentiation questions
• 26B10 Implicit function theorems, Jacobians, transformations with several variables
• 26B12 Calculus of ... | {"url":"http://msc2010.org/mscwiki/index.php?title=26Bxx&oldid=2727","timestamp":"2014-04-18T02:59:04Z","content_type":null,"content_length":"8392","record_id":"<urn:uuid:13c3c51b-39d7-43b2-ad3c-4c484a6096e7>","cc-path":"CC-MAIN-2014-15/segments/1398223207985.17/warc/CC-MAIN-20140423032007-00511-ip-10-147-4-33.ec2.inte... |
Ideal Gas
14.3: Ideal Gases
Created by: CK-12
Lesson Objectives
• Know the ideal gas law, and know which of the different values for the ideal gas constant to use in a given situation.
• Use the ideal gas law to calculate the pressure, volume, temperature, or number of moles of an ideal gas when the other three qua... | {"url":"http://www.ck12.org/book/CK-12-Chemistry---Intermediate/r12/section/14.3/","timestamp":"2014-04-16T13:57:06Z","content_type":null,"content_length":"141923","record_id":"<urn:uuid:5f6f8e15-0f70-4597-a46e-06d5db116b3b>","cc-path":"CC-MAIN-2014-15/segments/1397609523429.20/warc/CC-MAIN-20140416005203-00593-ip-10-1... |
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On a map, the key states that 1 inch equals 10 miles. If you w... | {"url":"http://openstudy.com/updates/51537e5be4b07077e0bf5873","timestamp":"2014-04-17T13:00:21Z","content_type":null,"content_length":"921248","record_id":"<urn:uuid:088b498f-0dd8-4be9-adb3-ecf5082b9239>","cc-path":"CC-MAIN-2014-15/segments/1397609530131.27/warc/CC-MAIN-20140416005210-00188-ip-10-147-4-33.ec2.internal... |
How to put the legend out of the plot
up vote 108 down vote favorite
I have a series of 20 plots (not subplots) to be made in a single figure. I want the legend to be outside of the box. At the same time, I do not want to change the axes, as the size of the figure
gets reduced. Kindly help me for the following queries:... | {"url":"http://stackoverflow.com/questions/4700614/how-to-put-the-legend-out-of-the-plot/4710783","timestamp":"2014-04-24T01:30:50Z","content_type":null,"content_length":"109798","record_id":"<urn:uuid:967da68e-3ad7-4fe4-a43a-7157737b4ebd>","cc-path":"CC-MAIN-2014-15/segments/1398223204388.12/warc/CC-MAIN-2014042303200... |
Applying the Magic of Mathematics to Solve Supercomputing Problems
David Brown has been the director of the Computational Research Division at Lawrence Berkeley National Laboratory (Berkeley Lab) since August 2011. His 31-year-career with the U. S. Department of
Energy (DOE) national laboratories includes 14 years at L... | {"url":"http://www.scientificcomputing.com/news/2013/09/applying-magic-mathematics-solve-supercomputing-problems","timestamp":"2014-04-18T13:16:17Z","content_type":null,"content_length":"87584","record_id":"<urn:uuid:0dcbc2c5-a0ff-483c-8729-180d4232f73e>","cc-path":"CC-MAIN-2014-15/segments/1397609533689.29/warc/CC-MAI... |
flipcode | Daily Game Development | Programming 3D Games and Graphics | Message Center - Surface normal of a circle (verlet)
Archive Notice: This thread is old and no longer active. It is here for reference purposes. This thread was created on an older version of the flipcode forums, before the
site closed
in 2005. Ple... | {"url":"http://www.flipcode.com/forums/thread/24836","timestamp":"2014-04-20T01:29:59Z","content_type":null,"content_length":"29887","record_id":"<urn:uuid:2e153767-8c80-4a98-80e4-f5252b04b732>","cc-path":"CC-MAIN-2014-15/segments/1398223206120.9/warc/CC-MAIN-20140423032006-00335-ip-10-147-4-33.ec2.internal.warc.gz"} |
Qt-Symbian port's sqrt() is very slow.
• Type:
• Status:
• Priority:
• Resolution: Done
• Affects Version/s: 4.6.1
• Component/s: None
• Environment:
QT 4.6.1, Symbian ^2, Symbian ^3 environments.
Qt's port to symbian uses S60's OpenC libm math library for all mathematical operations. In particula... | {"url":"https://bugreports.qt-project.org/browse/QTBUG-7723","timestamp":"2014-04-17T07:35:49Z","content_type":null,"content_length":"70691","record_id":"<urn:uuid:1bc13f23-9871-4f2d-aae6-84a1864bff55>","cc-path":"CC-MAIN-2014-15/segments/1397609526311.33/warc/CC-MAIN-20140416005206-00051-ip-10-147-4-33.ec2.internal.wa... |