content stringlengths 86 994k | meta stringlengths 288 619 |
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Posts by
Total # Posts: 126
an aluminium of mass 2.1 kg rests on a steel platform. A horizontal force of 15N is applied to block(a) given the coefficient of limiting friction is 0.61 will the block move? (b)if it moves what
will be its acceleration?
Problem 1- A 4 kg puck can slide with negligible friction over a hori... | {"url":"http://www.jiskha.com/members/profile/posts.cgi?name=maryam","timestamp":"2014-04-16T08:09:59Z","content_type":null,"content_length":"27419","record_id":"<urn:uuid:133aad47-b188-4df1-9532-3cb07deef91d>","cc-path":"CC-MAIN-2014-15/segments/1398223203841.5/warc/CC-MAIN-20140423032003-00508-ip-10-147-4-33.ec2.inte... |
Analytical solution or Monte-carlo simulation to find shortfall probability?
August 8th 2012, 12:34 PM #1
Aug 2012
Analytical solution or Monte-carlo simulation to find shortfall probability?
Hi everyone, I have a question regarding calculating the shortfall probability in the context of a retirement plan and w... | {"url":"http://mathhelpforum.com/advanced-statistics/201911-analytical-solution-monte-carlo-simulation-find-shortfall-probability.html","timestamp":"2014-04-16T04:49:27Z","content_type":null,"content_length":"43488","record_id":"<urn:uuid:c7ca35ab-e468-452d-bbce-7e39a3bdcab7>","cc-path":"CC-MAIN-2014-15/segments/139760... |
subtraction of vector subspaces??
December 2nd 2011, 05:26 AM
subtraction of vector subspaces??
I know that subtraction of vector subspaces is not defined.
Lets have two subspaces A and B such that A+B=C.
I would like to have A' such that A' $\oplus$ (A $\cap$ B)=A and A' $\oplus$ B=C.
In other words, A... | {"url":"http://mathhelpforum.com/advanced-algebra/193242-subtraction-vector-subspaces-print.html","timestamp":"2014-04-21T04:12:36Z","content_type":null,"content_length":"5028","record_id":"<urn:uuid:5638c954-2711-446b-815b-0f50bd2ada2d>","cc-path":"CC-MAIN-2014-15/segments/1397609539447.23/warc/CC-MAIN-20140416005219-... |
A math equation
12-16-2002 #1
A math equation
I need help creating a math equation.
"It will take me x energy to do one pushup at x gravity if I am x strong."
Where gravity and strength are supplied and energy needs to be figured.
It needs to work atleast for gravity 1-1000 and strength 1-1000000000, al... | {"url":"http://cboard.cprogramming.com/brief-history-cprogramming-com/30846-math-equation.html","timestamp":"2014-04-19T23:38:17Z","content_type":null,"content_length":"70427","record_id":"<urn:uuid:c00ddcc7-5a2a-4ebd-9beb-6c381d834111>","cc-path":"CC-MAIN-2014-15/segments/1397609537754.12/warc/CC-MAIN-20140416005217-0... |
2 Math Question Involving Inverse Trig
Last edited by qbkr21; September 23rd 2007 at 07:07 PM.
Let $\sin^{-1}x = \theta$ $\Rightarrow \sin \theta = x$ so now we can construct a right triangle with an acute angle $\theta$, where the opposite side to that angle is $x$ and the hypotenuse is 1.
thus, by Pythagoras' theorem... | {"url":"http://mathhelpforum.com/calculus/19398-2-math-question-involving-inverse-trig.html","timestamp":"2014-04-19T07:01:01Z","content_type":null,"content_length":"91068","record_id":"<urn:uuid:d240c7b7-efbe-42f2-92f5-e0687dcccf4d>","cc-path":"CC-MAIN-2014-15/segments/1397609536300.49/warc/CC-MAIN-20140416005216-0041... |
Directory tex-archive/macros/latex/contrib/fc_arith
The fc_arith Package
fc_arith is a LaTeX package used to create an arithmetic flash card.
Addition, subtraction, multiplication, and division problems are randomly
generated. There is a menu system for setting the intervals from which to randomly
draw numbers, and th... | {"url":"http://www.ctan.org/tex-archive/macros/latex/contrib/fc_arith","timestamp":"2014-04-16T17:19:06Z","content_type":null,"content_length":"8970","record_id":"<urn:uuid:a2e698b2-8e55-48c9-9ce0-efe5d070367e>","cc-path":"CC-MAIN-2014-15/segments/1397609524259.30/warc/CC-MAIN-20140416005204-00663-ip-10-147-4-33.ec2.in... |
Turán’s problem 10 revisited
, 2008
"... We use an estimate for character sums over finite fields of Katz to solve open problems of Montgomery and Turán. Let h ≥ 2 be an integer. We prove that inf max n∑ z ν k ∣ ≤ (h − 1)√n + O ( n
0.2625+ǫ). (ǫ> 0) |zk|≥1 ν=1,...,nh k=1 This improves on a bound of Erdős-Renyi by a fac... | {"url":"http://citeseerx.ist.psu.edu/showciting?cid=14544665","timestamp":"2014-04-18T08:22:50Z","content_type":null,"content_length":"13512","record_id":"<urn:uuid:e4dd6db5-c211-49a2-b54d-ae4c46d03df9>","cc-path":"CC-MAIN-2014-15/segments/1397609533121.28/warc/CC-MAIN-20140416005213-00562-ip-10-147-4-33.ec2.internal.w... |
Posts by
Posts by Jake
Total # Posts: 1,682
Gen. Chemistry
A 0.887 g sample of a mixture of NaCl and KCl is dissolved in water and the solution is treated with an excess of AgNO3 producing 1.822 g of AgCl. What is the percent by mass of each component in the
Use integration by parts to evaluate the definite integral. ... | {"url":"http://www.jiskha.com/members/profile/posts.cgi?name=Jake&page=15","timestamp":"2014-04-18T13:43:14Z","content_type":null,"content_length":"29054","record_id":"<urn:uuid:9e7998c0-b820-43f4-85b6-e172fd57a6ce>","cc-path":"CC-MAIN-2014-15/segments/1397609533689.29/warc/CC-MAIN-20140416005213-00418-ip-10-147-4-33.e... |
On this page we explain the precise mathematical relationship between the angle of the sun in the sky and the portion of the available insolation that will strike a horizontal surface. We also
explain the formula that calculates the optimal solar collector tilt angle for a given moment.
Our plan of attack for this page... | {"url":"http://www.ftexploring.com/solar-energy/sun-angle-and-insolation3.htm","timestamp":"2014-04-17T03:54:09Z","content_type":null,"content_length":"19517","record_id":"<urn:uuid:c0289053-9a0e-4e94-a9b8-ff95fd8d952c>","cc-path":"CC-MAIN-2014-15/segments/1398223203841.5/warc/CC-MAIN-20140423032003-00434-ip-10-147-4-3... |
Hellrazor surface area?
Announcement Announcement Module
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Hellrazor surface area? Page Title Module
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Conversation Detail Module
Anyone know the surface area of a 6'7" HR?
□ Jesus is coming, look busy!
Moving forward or just spinning faster? 6'0 90kg
5... | {"url":"http://www.firewiresurfboards.com/f/forum/board-and-tech-talk/hellrazor/1302-hellrazor-surface-area","timestamp":"2014-04-19T04:55:14Z","content_type":null,"content_length":"92704","record_id":"<urn:uuid:dec00ecd-46dd-4abd-8a22-1a3029a697a6>","cc-path":"CC-MAIN-2014-15/segments/1397609535775.35/warc/CC-MAIN-201... |
"Probability & Measure Theory" by Robert B. Ash, Catherine A. Doléans-Dade
Second Edition
Асаdеmiс Рrеss | 1999 | ISBN: 0120652021 9780120652020 | 532 pages | PDF/djvu | 7/3 MB
This is a text for a graduate-level course in probability that includes essential background topics in analysis. It provides extensive coverage... | {"url":"http://avaxsearch.com/?q=problems%20solutions%20measure%20theory","timestamp":"2014-04-19T19:34:05Z","content_type":null,"content_length":"24766","record_id":"<urn:uuid:608f3ea5-b312-4c01-ae7f-a3702e5fb6d6>","cc-path":"CC-MAIN-2014-15/segments/1398223205375.6/warc/CC-MAIN-20140423032005-00574-ip-10-147-4-33.ec2... |
Coupled Chemotaxis-Fluid Models
Seminar Room 1, Newton Institute
We consider coupled chemotaxis-fluid models aimed to describe swimming bacteria, which show bio-convective flow patterns on length scales much larger than the bacteria size. This behaviour can be
modelled by a system consisting of chemotaxis equations cou... | {"url":"http://www.newton.ac.uk/programmes/KIT/seminars/2010090915301.html","timestamp":"2014-04-19T17:14:40Z","content_type":null,"content_length":"4663","record_id":"<urn:uuid:496ca94f-886e-43bd-b3b7-d8dcdeb67040>","cc-path":"CC-MAIN-2014-15/segments/1398223206647.11/warc/CC-MAIN-20140423032006-00076-ip-10-147-4-33.e... |
Student Support Forum: 'Can Mathematica 4 do what my TI-89 do?' topic
Author Comment/Response
I own both a TI-89 hand-held calculator and Mathematica for Students 4.
I can't figure out how to do things with Mathematica that I can easily do
with my TI-89.
Here is a list of such... | {"url":"http://forums.wolfram.com/student-support/topics/4202","timestamp":"2014-04-18T13:25:07Z","content_type":null,"content_length":"27587","record_id":"<urn:uuid:6a3e9512-ddfc-4425-8b65-e18dd72dae3f>","cc-path":"CC-MAIN-2014-15/segments/1398223203235.2/warc/CC-MAIN-20140423032003-00246-ip-10-147-4-33.ec2.internal.w... |
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Topic: problem with find
Replies: 1 Last Post: Jan 22, 2012 8:00 PM
Messages: [ Previous | Next ]
prob... | {"url":"http://mathforum.org/kb/thread.jspa?threadID=2335057&messageID=7650852","timestamp":"2014-04-20T19:27:44Z","content_type":null,"content_length":"17315","record_id":"<urn:uuid:63db7461-b0f5-4a42-85fb-c60766a1cda6>","cc-path":"CC-MAIN-2014-15/segments/1398223205137.4/warc/CC-MAIN-20140423032005-00129-ip-10-147-4-... |
Manchester, NH Algebra 2 Tutor
Find a Manchester, NH Algebra 2 Tutor
...Although my educational background is in Chemistry, my other undergraduate major was Applied Math, and I have used much of the subject matter from Algebra II in my own career as well as
science tutoring. I recently (03/2013) passed the Massachu... | {"url":"http://www.purplemath.com/Manchester_NH_Algebra_2_tutors.php","timestamp":"2014-04-20T07:01:29Z","content_type":null,"content_length":"24091","record_id":"<urn:uuid:0f0c58ad-3480-4beb-9cdc-5e85bd42d823>","cc-path":"CC-MAIN-2014-15/segments/1398223205137.4/warc/CC-MAIN-20140423032005-00037-ip-10-147-4-33.ec2.int... |
Overflow error
Michael Hudson wrote:
(E-Mail Removed)
(Jane Austine) writes:
>>>>>from math import e
>>Traceback (most recent call last):
>> File "<pyshell#15>", line 1, in -toplevel-
>> e**710
>>OverflowError: (34, 'Result too large')
>>What should I do to calculate e**710?
> Well, it's too big for your platform's C d... | {"url":"http://www.velocityreviews.com/forums/t333633-overflow-error.html","timestamp":"2014-04-20T19:12:20Z","content_type":null,"content_length":"51971","record_id":"<urn:uuid:15ad51cb-c7fa-4321-b78d-4a6dc03271cd>","cc-path":"CC-MAIN-2014-15/segments/1397609539066.13/warc/CC-MAIN-20140416005219-00287-ip-10-147-4-33.e... |
Variable - a finding that can take on different values during the course of a study. When used without specification, refers to a measurement taken as part of the study (e.g., AGE, AGREE, SEX).
Variables should not to be confused with values, which represents realized measurements (e.g., 31, neutral, female).
There are... | {"url":"http://www.sjsu.edu/faculty/gerstman/EpiInfo/variable.htm","timestamp":"2014-04-20T14:20:34Z","content_type":null,"content_length":"2129","record_id":"<urn:uuid:2c5a567c-a6d5-4e21-ae48-eb292b3e492b>","cc-path":"CC-MAIN-2014-15/segments/1397609538787.31/warc/CC-MAIN-20140416005218-00411-ip-10-147-4-33.ec2.intern... |
Web Resources
Newton's First Law of Motion
Khan Academy podcast on Newton's First Law of Motion. Part 1
Lunar Landing
Can you avoid the boulder field and land safely, just before your fuel runs out, as Neil Armstrong did in 1969? Our version of this classic video game accurately simulates the real motion of the
lunar l... | {"url":"http://alex.state.al.us/weblinks_category.php?stdID=41194","timestamp":"2014-04-19T22:15:44Z","content_type":null,"content_length":"22446","record_id":"<urn:uuid:b41104b5-bb1e-4aa2-8f80-2f8cdc2bec16>","cc-path":"CC-MAIN-2014-15/segments/1397609537754.12/warc/CC-MAIN-20140416005217-00209-ip-10-147-4-33.ec2.inter... |
Professor Bill Parry
11-plus-failure mathematician FRS
William Parry, mathematician: born Coventry 3 July 1934; Lecturer, Birmingham University 1960-65; Senior Lecturer in Mathematics, Sussex University 1965-68; Reader in Mathematics, Warwick University
1968-70, Professor of Mathematics 1970-99 (Emeritus); FRS 1984; ma... | {"url":"http://www-groups.dcs.st-and.ac.uk/~history/Obits2/Parry_Independent.html","timestamp":"2014-04-19T19:37:15Z","content_type":null,"content_length":"7004","record_id":"<urn:uuid:88bd4fcf-bb7e-466c-ba3a-ac3666355b57>","cc-path":"CC-MAIN-2014-15/segments/1398223207046.13/warc/CC-MAIN-20140423032007-00578-ip-10-147... |
applications of machine learning / data mining
October 31st, 2012, 05:23 AM #1
Junior Member
Join Date
Oct 2012
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What are some areas of application of machine learning and data mining algorithms, which is directly used to generate revenue for the business?
For example, I know t... | {"url":"http://www.javaprogrammingforums.com/totally-off-topic/18864-applications-machine-learning-data-mining.html","timestamp":"2014-04-16T06:03:53Z","content_type":null,"content_length":"77933","record_id":"<urn:uuid:0a58d4ae-eb75-40a7-a8e7-c4034424693e>","cc-path":"CC-MAIN-2014-15/segments/1397609521512.15/warc/CC-... |
Mechanical System and SimMechanics Simulation
Darina Hroncova^1, , Miroslav Pastor^1
^1Department of applied mechanics and mechatronics, Technical University of Košice / Faculty of mechanical engineering, Košice, Slovakia
The work shows the use of SimMechanics for modeling of mechanical systems. As an example a mechani... | {"url":"http://pubs.sciepub.com/ajme/1/7/20/index.html","timestamp":"2014-04-24T09:10:39Z","content_type":null,"content_length":"84746","record_id":"<urn:uuid:ece75eb7-5066-4183-ae19-9476bfc7ccd3>","cc-path":"CC-MAIN-2014-15/segments/1398223206118.10/warc/CC-MAIN-20140423032006-00286-ip-10-147-4-33.ec2.internal.warc.gz... |
August 23rd 2012, 10:36 AM
Hello Forum! I have the following problem, which is related to the ring of quaternions, I tried but I had no luck in making it, I hope I can help:
Let I be the ring of integers Hamilton quaternions and define:
$N : I\rightarrow{}Z\ with\ N(a+bi+cj+dk)=a^2+b^2+c^2+d^2$
(The N i... | {"url":"http://mathhelpforum.com/advanced-algebra/202472-unit-print.html","timestamp":"2014-04-20T11:14:33Z","content_type":null,"content_length":"8177","record_id":"<urn:uuid:18a7f4cc-2eeb-4649-8056-de18574fadb1>","cc-path":"CC-MAIN-2014-15/segments/1397609538423.10/warc/CC-MAIN-20140416005218-00056-ip-10-147-4-33.ec2... |
Franklin Park, IL Math Tutor
Find a Franklin Park, IL Math 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 GRE. I've helped students push past their goal scores in both the
Quant and Verbal. I took the revised version of the GRE the ... | {"url":"http://www.purplemath.com/Franklin_Park_IL_Math_tutors.php","timestamp":"2014-04-18T23:51:46Z","content_type":null,"content_length":"24327","record_id":"<urn:uuid:aae21879-17d2-4e51-9ac6-f736c60620df>","cc-path":"CC-MAIN-2014-15/segments/1397609535535.6/warc/CC-MAIN-20140416005215-00551-ip-10-147-4-33.ec2.inter... |
Changing Areas, Changing Perimeters
Copyright © University of Cambridge. All rights reserved.
'Changing Areas, Changing Perimeters' printed from http://nrich.maths.org/
Isabelle from South Wilts and Natalie from St.Andrews International School in Thailand both answered the first challenge correctly.
Here is Natalie's a... | {"url":"http://nrich.maths.org/7534/solution?nomenu=1","timestamp":"2014-04-20T13:33:27Z","content_type":null,"content_length":"5599","record_id":"<urn:uuid:89cdd41f-2a1f-4cbe-aa22-ad4c01ee30f2>","cc-path":"CC-MAIN-2014-15/segments/1398223207046.13/warc/CC-MAIN-20140423032007-00197-ip-10-147-4-33.ec2.internal.warc.gz"} |
SMPS transformer overwinding - diyAudio
corrieb :
Sorry, I misunderstood you, I thought you were working in an offline application. Well, you have to find out where is coming so much voltage drop.
Do you have an oscilloscope at hand?
Are you using a fully regulated push-pull with inductors connected just between the ou... | {"url":"http://www.diyaudio.com/forums/power-supplies/66801-smps-transformer-overwinding.html","timestamp":"2014-04-17T13:27:12Z","content_type":null,"content_length":"81852","record_id":"<urn:uuid:30c62f11-ff2c-40aa-aa48-7013c8858009>","cc-path":"CC-MAIN-2014-15/segments/1397609530131.27/warc/CC-MAIN-20140416005210-00... |
The Problem
Wouldn't it be nice to have symbolic matrix operations in Perl? Instead of composing matrices of numbers, we could compose matrices of expressions. Consider the following:
use strict;
use warnings;
use Math::MatrixReal;
my $x = 1;
my $m = Math::MatrixReal->new_from_rows([ [$x, 2*$x], [3*$x, 4*$x] ]);
for(; ... | {"url":"http://blogs.perl.org/users/ryan_fox/atom.xml","timestamp":"2014-04-20T08:17:14Z","content_type":null,"content_length":"11383","record_id":"<urn:uuid:b6ca636f-2304-438b-8a30-c12812658411>","cc-path":"CC-MAIN-2014-15/segments/1398223202774.3/warc/CC-MAIN-20140423032002-00402-ip-10-147-4-33.ec2.internal.warc.gz"} |
Raritan, NJ Math Tutor
Find a Raritan, NJ Math Tutor
...I like to read and research American History in my spare time as well. I am an American History buff with emphasis on the Revolutionary War period and the Civil War period. I have taught
grammar to foreign nationals in Germany; to foreign area officers while s... | {"url":"http://www.purplemath.com/raritan_nj_math_tutors.php","timestamp":"2014-04-18T11:24:50Z","content_type":null,"content_length":"23999","record_id":"<urn:uuid:9fbb420e-f3dc-42dd-ae80-eb1371909103>","cc-path":"CC-MAIN-2014-15/segments/1398223207046.13/warc/CC-MAIN-20140423032007-00335-ip-10-147-4-33.ec2.internal.w... |
Kernel k-means - File Exchange - MATLAB Central
File Information
This function performs kernel version of kmeans algorithm. When the linear kernel (i.e., inner product) is used, the algorithm is equivalent to standard kme... | {"url":"http://www.mathworks.com/matlabcentral/fileexchange/26182-kernel-k-means","timestamp":"2014-04-19T19:38:25Z","content_type":null,"content_length":"31828","record_id":"<urn:uuid:8439b662-8a0d-4def-b0be-450a6ff3a8d1>","cc-path":"CC-MAIN-2014-15/segments/1397609537376.43/warc/CC-MAIN-20140416005217-00145-ip-10-147... |
Is Euclidean space an affine space?
Hi everyone,
I have a question that I'm not sure about. I wanted to know if it is standard to think of Euclidean space as a linear vector space, or a (more general) affine space? In some places, I see Euclidean
space referred to as an affine space, meaning that the mathematical defin... | {"url":"http://www.physicsforums.com/showthread.php?t=713914","timestamp":"2014-04-19T12:34:06Z","content_type":null,"content_length":"20829","record_id":"<urn:uuid:d7bb1c7b-4501-44df-b621-6ed49f8cbe0a>","cc-path":"CC-MAIN-2014-15/segments/1398223206770.7/warc/CC-MAIN-20140423032006-00583-ip-10-147-4-33.ec2.internal.wa... |
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Here's the question you clicked on:
Laplace Transform: Evaluate L{f(t)} \[\begin {align*} f(t) &= ... | {"url":"http://openstudy.com/updates/50b18053e4b09749ccac6dfe","timestamp":"2014-04-17T10:00:24Z","content_type":null,"content_length":"139385","record_id":"<urn:uuid:383e4438-51f2-41f3-9588-683c5c64b71a>","cc-path":"CC-MAIN-2014-15/segments/1398223201753.19/warc/CC-MAIN-20140423032001-00402-ip-10-147-4-33.ec2.internal... |
We will plot a surface two ways. First we will use easyviz. Consider the following code:
import numpy
from scitools import easyviz
x = numpy.arange(-8,8,.2)
xx,yy = numpy.meshgrid(x,x)
r = numpy.sqrt(xx**2+yy**2) + 0.01
zz = numpy.sin(r)/r
The function surfc takes a list of x coordinates, and y coordinates and a numpy ... | {"url":"http://www.sagemath.org/doc/numerical_sage/plotting.html","timestamp":"2014-04-18T00:14:31Z","content_type":null,"content_length":"20903","record_id":"<urn:uuid:6a3230a1-20a3-4349-8596-d9e3468a23c3>","cc-path":"CC-MAIN-2014-15/segments/1397609532374.24/warc/CC-MAIN-20140416005212-00522-ip-10-147-4-33.ec2.intern... |
Roots of cubic equation
October 10th 2009, 05:25 PM #1
Sep 2009
Roots of cubic equation
Kindly help me with this roots question...please
If the roots of the equation 4x³ + 7x² - 5x - 1 = 0 are α, β and γ, find the equation whose roots are
i. α + 1, β + 1 and γ + 1
ii. α², β², γ²
We have $x_1=\al... | {"url":"http://mathhelpforum.com/pre-calculus/107247-roots-cubic-equation.html","timestamp":"2014-04-20T03:33:01Z","content_type":null,"content_length":"46594","record_id":"<urn:uuid:7e608f3e-df5b-4cf0-b6ab-9ec1f51cdec3>","cc-path":"CC-MAIN-2014-15/segments/1397609537864.21/warc/CC-MAIN-20140416005217-00388-ip-10-147-4... |
Distribution of Digits in Irrational Numbers - Physics and Mathematics
I wanted to come up with a fun and frivolous but scientific topic for my 100th thread, and while I was out on my jog this afternoon the following popped into my head:
Decimal numbers
come in two varieties:
• Finite decimals which have nothing but ... | {"url":"http://www.scienceforums.com/topic/13015-distribution-of-digits-in-irrational-numbers/?p=213566","timestamp":"2014-04-16T19:38:18Z","content_type":null,"content_length":"110762","record_id":"<urn:uuid:312b10d2-d84c-4c39-a042-8510148d0a2f>","cc-path":"CC-MAIN-2014-15/segments/1398223206120.9/warc/CC-MAIN-2014042... |
Math Help
March 4th 2013, 06:51 PM #1
Sep 2012
Given a triangle ABC , draw a line from the vertex C to the hypotenuse, which is perpendicular to the hypotenuse at point H . A circle of radius r is inscribed in the triangle . Two more circles
of radi r[1] and r[2] are inscribed between the triangle ,the lin... | {"url":"http://mathhelpforum.com/geometry/214232-triangle.html","timestamp":"2014-04-18T01:11:30Z","content_type":null,"content_length":"28953","record_id":"<urn:uuid:6bcb7dbd-3468-46ce-b884-aaa38f3562f7>","cc-path":"CC-MAIN-2014-15/segments/1397609532374.24/warc/CC-MAIN-20140416005212-00496-ip-10-147-4-33.ec2.internal... |
Track & Field News
Statistics books
Moving around, I need to thin out my bookshelf a bit. Is anyone interested in the following books:
USA T&F Annuals: 1996 and 1997
USATF Media Guide & FAST Annual: 2000 and 2001
ATFS Annual: 1998 and 1999
IAAF Statistical Handbook from Athens '97
IAAF World Athletics Series 1996-1999,... | {"url":"http://www.trackandfieldnews.com/discussion/viewtopic.php?f=7&t=12869","timestamp":"2014-04-20T19:52:51Z","content_type":null,"content_length":"33417","record_id":"<urn:uuid:a72c3d55-4467-4dd1-a2ee-789ecb7b8b3c>","cc-path":"CC-MAIN-2014-15/segments/1397609539066.13/warc/CC-MAIN-20140416005219-00116-ip-10-147-4-... |
Wheaton, IL Algebra 2 Tutor
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I have a Master's and Bachelor's in Mathematics and I've tutored elementary students while in high school and tutored high school and college students while in college and graduate school. I
enjoy tutoring students of all ages and especially enjoy helpi... | {"url":"http://www.purplemath.com/Wheaton_IL_algebra_2_tutors.php","timestamp":"2014-04-19T02:25:31Z","content_type":null,"content_length":"23909","record_id":"<urn:uuid:2fb12298-5537-4387-bb66-3927b86376f9>","cc-path":"CC-MAIN-2014-15/segments/1397609535745.0/warc/CC-MAIN-20140416005215-00470-ip-10-147-4-33.ec2.intern... |
Somerset, MD Trigonometry Tutor
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...I have worked with middle school and high school students in this subject. I am very patient and can help you become more confident in your math skills! I have tutored Algebra 2 for several
46 Subjects: including trigonometry, English, Spanis... | {"url":"http://www.purplemath.com/somerset_md_trigonometry_tutors.php","timestamp":"2014-04-21T00:01:49Z","content_type":null,"content_length":"24098","record_id":"<urn:uuid:dcf539c3-b2aa-496e-a18d-ea57e0c40f78>","cc-path":"CC-MAIN-2014-15/segments/1397609539337.22/warc/CC-MAIN-20140416005219-00274-ip-10-147-4-33.ec2.i... |
In Python you have the following arithmetic operators:
Symbol Name
+ Addition
- Subtraction
* Multiplication
/ Division
// Floor division
% Modulo
** Power
Now, let's try to use Python as a calculator. We will calculate $3*8/6$:
Here are a few more examples:
The rules of ar... | {"url":"http://jwork.org/learn/doc/doku.php?id=python:arithmetic","timestamp":"2014-04-19T13:01:43Z","content_type":null,"content_length":"26691","record_id":"<urn:uuid:58eb4e89-c910-49f7-a5a2-d8ce22bdec2c>","cc-path":"CC-MAIN-2014-15/segments/1397609537186.46/warc/CC-MAIN-20140416005217-00357-ip-10-147-4-33.ec2.intern... |
- Physic college
Posted by meera on Friday, October 1, 2010 at 7:03am.
The equation for the change of position of a train starting at x
= 0 is given by
x=1/2at^2 + bt3 . Find the dimensions of a and b.
If y = C1 sin (C2 t)
where y is a distance and t is the time. What are the dimensions of C1 and
C2 ?.
• - Physic col... | {"url":"http://www.jiskha.com/display.cgi?id=1285930982","timestamp":"2014-04-20T19:03:22Z","content_type":null,"content_length":"9931","record_id":"<urn:uuid:904a837a-2fbf-4a39-95eb-6fb18a33fb60>","cc-path":"CC-MAIN-2014-15/segments/1397609539066.13/warc/CC-MAIN-20140416005219-00443-ip-10-147-4-33.ec2.internal.warc.gz... |
21-110: Working systematically
We often want to make a complete list of all of the different types of some object, or search for a solution to a puzzle by trial and error. A very helpful technique to follow in cases such as these
is to work systematically. Unless the problem is especially simple, it will often save you... | {"url":"http://www.math.cmu.edu/~bkell/21110-2010s/systematically.html","timestamp":"2014-04-16T21:58:53Z","content_type":null,"content_length":"31160","record_id":"<urn:uuid:a7678913-51c9-4a1f-b072-82964c7d6323>","cc-path":"CC-MAIN-2014-15/segments/1397609525991.2/warc/CC-MAIN-20140416005205-00409-ip-10-147-4-33.ec2.i... |
What is the difference/significance between the Pythagorean Theory and Distance Formula? - Homework Help - eNotes.com
What is the difference/significance between the Pythagorean Theory and Distance Formula?
In a Cartesian two dimensional plot, the distance d between two points `(x_1,y_1)` and `(x_2,y_2)` is `d=sqrt((x_... | {"url":"http://www.enotes.com/homework-help/what-difference-significance-between-pythagorean-439534","timestamp":"2014-04-20T03:37:08Z","content_type":null,"content_length":"26387","record_id":"<urn:uuid:2667e800-3b0b-4e2b-8497-e781ab6d6f11>","cc-path":"CC-MAIN-2014-15/segments/1397609537864.21/warc/CC-MAIN-20140416005... |
question on finite sets
May 20th 2009, 06:32 AM #1
May 2009
question on finite sets
I'm reading through a book on Real Analysis (Intro.) and got a question on finite sets. The definition I'm using for a finite set is: a set A is finite iff there is a one-to-one function f on Nk
onto A (Nk is read N sub k wh... | {"url":"http://mathhelpforum.com/differential-geometry/89783-question-finite-sets.html","timestamp":"2014-04-18T01:54:50Z","content_type":null,"content_length":"40872","record_id":"<urn:uuid:50747a95-fe85-40e3-b7a9-4beb5dda4e74>","cc-path":"CC-MAIN-2014-15/segments/1397609532374.24/warc/CC-MAIN-20140416005212-00133-ip-... |
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starting from rest a 15kg on a horizontal surface acquires kin... | {"url":"http://openstudy.com/updates/50711f83e4b0c2dc8340c88d","timestamp":"2014-04-20T00:48:23Z","content_type":null,"content_length":"96733","record_id":"<urn:uuid:16b689f4-49c7-42c1-b81b-17857a7e7a29>","cc-path":"CC-MAIN-2014-15/segments/1397609537804.4/warc/CC-MAIN-20140416005217-00275-ip-10-147-4-33.ec2.internal.w... |
Mathematics Tutors
Allston, MA 02134
Physics and mathematics tutor; experienced with applications
I am an experienced high school physics and
teacher, retired, with current Massachusetts certification in both areas. I have taught various levels of
--through calculus--as standalone courses and as part of the content of... | {"url":"http://www.wyzant.com/Hyde_Park_MA_Mathematics_tutors.aspx","timestamp":"2014-04-23T16:15:25Z","content_type":null,"content_length":"62059","record_id":"<urn:uuid:b364d703-0a09-43b4-8b83-414f7849e125>","cc-path":"CC-MAIN-2014-15/segments/1398223202774.3/warc/CC-MAIN-20140423032002-00076-ip-10-147-4-33.ec2.inter... |
Re: RE: st: RE: Automatically changing -ylabel()- values using -grap
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Re: RE: st: RE: Automatically changing -ylabel()- values using -graph-
From "Clive Nicholas" <Clive.Nicholas@newcastle.ac.uk>
To statalist@hsphsun2.harvard.edu
Sub... | {"url":"http://www.stata.com/statalist/archive/2005-06/msg00283.html","timestamp":"2014-04-18T02:58:52Z","content_type":null,"content_length":"8049","record_id":"<urn:uuid:99207d01-31df-435b-b875-0769d2f2f61f>","cc-path":"CC-MAIN-2014-15/segments/1397609532480.36/warc/CC-MAIN-20140416005212-00278-ip-10-147-4-33.ec2.int... |
piecewise function
dilou wrote:
> I need your help for implementing the pwl in FPGA using VHDL. In a
> study I have found this approximation of the sigmoid function:
> It can be approximate it at:
> y(v) = mi( v-vi-1) + ni-1 , v <> [ vi-1, vi]
> ni = mi ( vi - vi-1 ) + ni-1, i=1,2,3,...
> with v0=0, n0=0
> i : number o... | {"url":"http://www.velocityreviews.com/forums/t294278-piecewise-function.html","timestamp":"2014-04-17T12:30:44Z","content_type":null,"content_length":"42893","record_id":"<urn:uuid:d5943d28-98c4-4d87-84c7-030b41a926d8>","cc-path":"CC-MAIN-2014-15/segments/1397609530131.27/warc/CC-MAIN-20140416005210-00436-ip-10-147-4-... |
April 21st 2010, 07:33 AM
show if A and B are connected in (M,d) with AnB!=empty set, AUB is also connected.
that just seems obvious.....how would I go about proving this one?
April 21st 2010, 03:33 PM
Let's prove it in general. Let $X$ be a topological space and $\left\{U_\alpha\right\}_{\alpha\in\mathcal{... | {"url":"http://mathhelpforum.com/differential-geometry/140504-connectedness-print.html","timestamp":"2014-04-24T16:15:28Z","content_type":null,"content_length":"25362","record_id":"<urn:uuid:f8473954-bcae-4375-83f1-29bf174fdec5>","cc-path":"CC-MAIN-2014-15/segments/1398223206647.11/warc/CC-MAIN-20140423032006-00554-ip-... |
[Numpy-discussion] How can I constrain linear_least_squares to integer solutions?
[Numpy-discussion] How can I constrain linear_least_squares to integer solutions?
Stefan van der Walt stefan@sun.ac...
Wed Nov 28 01:59:37 CST 2007
On Tue, Nov 27, 2007 at 11:07:30PM -0700, Charles R Harris wrote:
> This is not a trivial ... | {"url":"http://mail.scipy.org/pipermail/numpy-discussion/2007-November/030097.html","timestamp":"2014-04-17T03:56:03Z","content_type":null,"content_length":"4033","record_id":"<urn:uuid:38cc42aa-50b7-4b5d-a278-9f9e7daf1738>","cc-path":"CC-MAIN-2014-15/segments/1398223203422.8/warc/CC-MAIN-20140423032003-00195-ip-10-147... |
West Tawakoni, TX Math Tutor
Find a West Tawakoni, TX Math Tutor
I hold a BS in biochemistry and a PhD in cell biology, so I have extensive education in science and math. I like to adapt my tutoring style to the student and work with him/her to figure out the
method that they best respond to. I like to provide stru... | {"url":"http://www.purplemath.com/West_Tawakoni_TX_Math_tutors.php","timestamp":"2014-04-17T07:37:27Z","content_type":null,"content_length":"24128","record_id":"<urn:uuid:b2dcd184-a75a-4f3c-806d-65174ebad206>","cc-path":"CC-MAIN-2014-15/segments/1397609526311.33/warc/CC-MAIN-20140416005206-00284-ip-10-147-4-33.ec2.inte... |
Pedal Triangle
Pedal Triangle Explorations
Rachael Brown
First, let's talk about the definition of a pedal triangle. A pedal triangle is crea... | {"url":"http://jwilson.coe.uga.edu/EMAT6680Fa05/Brown/Pedal%20Triangle/pedal.html","timestamp":"2014-04-21T12:08:37Z","content_type":null,"content_length":"6560","record_id":"<urn:uuid:e2c4a532-182c-43b0-a801-b9be1250c0ed>","cc-path":"CC-MAIN-2014-15/segments/1398223202457.0/warc/CC-MAIN-20140423032002-00274-ip-10-147-... |
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A cow is tethered by a 100-ft rope to the inside corner of an ... | {"url":"http://openstudy.com/updates/500554dce4b0fb99113496ce","timestamp":"2014-04-16T13:09:33Z","content_type":null,"content_length":"85275","record_id":"<urn:uuid:9b928807-d6ae-4673-b529-a1fa84315a38>","cc-path":"CC-MAIN-2014-15/segments/1397609523429.20/warc/CC-MAIN-20140416005203-00482-ip-10-147-4-33.ec2.internal.... |
[Numpy-discussion] suggestions for Matrix-related changes
Sven Schreiber svetosch at gmx.net
Wed Jul 12 04:44:46 CDT 2006
JJ schrieb:
> Travis Oliphant <oliphant <at> ee.byu.edu> writes:
>> Svd returns matrices now. Except for the list of singular values
>> which is still an array. Do you want a 1xn matrix instead o... | {"url":"http://mail.scipy.org/pipermail/numpy-discussion/2006-July/021780.html","timestamp":"2014-04-20T02:17:50Z","content_type":null,"content_length":"4282","record_id":"<urn:uuid:e6eca0d7-ed36-4eef-a35e-2a291eec7f1f>","cc-path":"CC-MAIN-2014-15/segments/1397609537804.4/warc/CC-MAIN-20140416005217-00571-ip-10-147-4-3... |
Trading Momenta In A Collision Two Particles Moveperpendicular... | Chegg.com
Trading Momenta in a Collision
Part A
Suppose that after the collision, theparticles "trade" their momenta, as shown in the figure. That is,particle 1 now has magnitude of momentum
Express your answer in terms of
Part B
Consider an alternativ... | {"url":"http://www.chegg.com/homework-help/questions-and-answers/trading-momenta-collision-two-particles-moveperpendicular-collide-part-suppose-collision-t-q132543","timestamp":"2014-04-17T14:41:45Z","content_type":null,"content_length":"33523","record_id":"<urn:uuid:2c6a1e65-aa37-401e-9371-87baff50ee61>","cc-path":"CC... |
Villa Rica, PR Algebra 2 Tutor
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I have been a teacher for seven years and currently teach 9th grade Coordinate Algebra and 10th grade Analytic Geometry. I am up to date with all of the requirements in preparation for the EOCT. I
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Need help on a cos/sin explanation problem!
January 20th 2009, 07:12 PM #1
Junior Member
Sep 2008
Need help on a cos/sin explanation problem!
Explain why the value of [cos $theta$, sin $theta$) *dot* [(cos(90+ $theta$), sin(90+ $theta$)] is independent of $theta$.
^^ this is one of the problems I have due t... | {"url":"http://mathhelpforum.com/trigonometry/69146-need-help-cos-sin-explanation-problem.html","timestamp":"2014-04-16T05:29:13Z","content_type":null,"content_length":"55158","record_id":"<urn:uuid:e391f54c-be62-4885-adcb-4ad653625f91>","cc-path":"CC-MAIN-2014-15/segments/1397609521512.15/warc/CC-MAIN-20140416005201-0... |
Comparing Statistical Methods for Constructing Large Scale Gene Networks
The gene regulatory network (GRN) reveals the regulatory relationships among genes and can provide a systematic understanding of molecular mechanisms underlying biological processes. The importance
of computer simulations in understanding cellular... | {"url":"http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0029348","timestamp":"2014-04-21T02:02:34Z","content_type":null,"content_length":"180980","record_id":"<urn:uuid:d27e8406-4d5a-4b32-a5d2-b92fa12b7dc7>","cc-path":"CC-MAIN-2014-15/segments/1398223207046.13/warc/CC-MAIN-20140423032007-00569-ip-10-... |
Comparison and Inheritance
February 22, 2013
We continue last week's discussion of comparison functions by thinking about how to compare objects from different parts of an inheritance hierarchy.
We continue last week's discussion of comparison functions by thinking about how to compare objects from different parts of a... | {"url":"http://www.drdobbs.com/parallel/comparison-and-inheritance/240149250","timestamp":"2014-04-16T04:40:56Z","content_type":null,"content_length":"97501","record_id":"<urn:uuid:81e34cdb-df16-4d88-8ab2-0d599ff35d35>","cc-path":"CC-MAIN-2014-15/segments/1398223203235.2/warc/CC-MAIN-20140423032003-00036-ip-10-147-4-33... |
Data Structures
About the course
This is the homepage for CS 241: Data Structures, a course offered by Fritz Ruehr at the Computer Science Department of Willamette University.
The study of data structures and algorithms serves as a basic foundation to a Computer Science education. As a second course in programming, it ... | {"url":"http://www.willamette.edu/~fruehr/241/","timestamp":"2014-04-20T08:37:01Z","content_type":null,"content_length":"21467","record_id":"<urn:uuid:a1598650-d9d8-41b7-ac0b-b18729dc1d73>","cc-path":"CC-MAIN-2014-15/segments/1397609538110.1/warc/CC-MAIN-20140416005218-00596-ip-10-147-4-33.ec2.internal.warc.gz"} |
Controlling Dengue with Vaccines in Thailand
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PLoS Negl Trop Dis. Oct 2012; 6(10): e1876.
Controlling Dengue with Vaccines in Thailand
Alison P. Galvani, Editor^
Dengue is a mosquito-borne infectio... | {"url":"http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3493390/?tool=pubmed","timestamp":"2014-04-20T17:10:40Z","content_type":null,"content_length":"139593","record_id":"<urn:uuid:058aa533-072c-420f-8427-93f27a6b4d7e>","cc-path":"CC-MAIN-2014-15/segments/1397609538824.34/warc/CC-MAIN-20140416005218-00453-ip-10-147-4-33.e... |
French resources for (Geometric) Group Theory
up vote 3 down vote favorite
I am looking for ways to improve my mathematical French while learning more material about either finite group theory or geometric group theory. In particular, I would love to find a French
equivalent to Rotman's group theory book, if possible. ... | {"url":"http://mathoverflow.net/questions/97163/french-resources-for-geometric-group-theory?sort=newest","timestamp":"2014-04-19T12:26:16Z","content_type":null,"content_length":"57580","record_id":"<urn:uuid:546d3ace-4859-42f6-96a7-3d3b4a43f235>","cc-path":"CC-MAIN-2014-15/segments/1397609537186.46/warc/CC-MAIN-2014041... |
188 helpers are online right now
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math - a fortune file
At the end of a proof you write Q.E.D, which stands not for
Quod Erat Demonstrandum as the books would have you believe, but
for Quite Easily Done.
-- R. Ainsley in Bluff your way in Maths, 1988
Euler's formula: A connected plane graph with n vertices, e edges and f faces
satisfie... | {"url":"http://www.dynamical-systems.org/fortune/index.html","timestamp":"2014-04-20T11:34:14Z","content_type":null,"content_length":"3945","record_id":"<urn:uuid:3accb336-14e1-4783-aa26-15530eacf294>","cc-path":"CC-MAIN-2014-15/segments/1397609538423.10/warc/CC-MAIN-20140416005218-00085-ip-10-147-4-33.ec2.internal.war... |
= Preview Document = Member Document = Pin to Pinterest
Double-six dominoes, but with weather words instead of dots. Great for early literacy/language instruction.
"The duckling lived in a farm with 45 animals. There were 10 pigs, 12 goats, 5 dogs, 2 horses and the rest were sheep." Choose the equation that bes... | {"url":"http://www.abcteach.com/directory/subjects-math-addition-650-6-3","timestamp":"2014-04-17T15:45:33Z","content_type":null,"content_length":"144806","record_id":"<urn:uuid:4eb74bbd-6bff-42db-bbd4-f7b649a6078f>","cc-path":"CC-MAIN-2014-15/segments/1397609530136.5/warc/CC-MAIN-20140416005210-00553-ip-10-147-4-33.ec... |
Northlake, TX Prealgebra Tutor
Find a Northlake, TX Prealgebra Tutor
...In all, I take great joy in seeing my students grasp the concepts and become successful in their endeavors. I look forward to helping and serving you or your child's learning needs and to
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Please - Need help tonight on a couple more calc problems
Quote: Originally Posted by JohnSena This is an exponential problem since you remove 17% it is the same as saying 83% of the total amount thus, $A(t)=100(.83)^t$ For the second part you need to find,
$100(.83)^3\approx 57.18$
Quote: Originally Posted by JohnSena... | {"url":"http://mathhelpforum.com/calculus/3084-please-need-help-tonight-couple-more-calc-problems-print.html","timestamp":"2014-04-18T17:23:59Z","content_type":null,"content_length":"8255","record_id":"<urn:uuid:7adc1a5e-9112-4da7-8a49-10a620e2e5c8>","cc-path":"CC-MAIN-2014-15/segments/1397609533957.14/warc/CC-MAIN-201... |
Yann LeCun
Deep Learning has taken over all the big search companies, including Google, Microsoft and Baidu, as well as a few companies that produce technology for them, such as IBM.
They all have deployed DL systems for speech recognition and image content analysis (for search and other things). And there are several ... | {"url":"https://plus.google.com/+YannLeCunPhD/posts/7gM7C6XEjQC","timestamp":"2014-04-18T17:09:46Z","content_type":null,"content_length":"100825","record_id":"<urn:uuid:54ef4052-2242-455c-84fa-d723ff36d401>","cc-path":"CC-MAIN-2014-15/segments/1397609533957.14/warc/CC-MAIN-20140416005213-00236-ip-10-147-4-33.ec2.intern... |
Evelyn Boyd Granville, second african american woman mathematican
│ Evelyn Boyd Granville │ │
│ │ │
│Born: May 1, 1924 ... | {"url":"http://www.math.buffalo.edu/mad/PEEPS/granville_evelynb.html","timestamp":"2014-04-16T20:04:29Z","content_type":null,"content_length":"12627","record_id":"<urn:uuid:e8bc413a-838c-4a60-b3ad-411082eb0c1b>","cc-path":"CC-MAIN-2014-15/segments/1397609524644.38/warc/CC-MAIN-20140416005204-00472-ip-10-147-4-33.ec2.in... |
Jackknife bias reduction for polychotomous logistic regression
, 1999
"... We study rare events data, binary dependent variables with dozens to thousands of times fewer ones (events, such as wars, vetoes, cases of political activism, or epidemiological infections) than
zeros (“nonevents”). In many literatures, these va... | {"url":"http://citeseerx.ist.psu.edu/showciting?cid=2849492","timestamp":"2014-04-18T00:42:01Z","content_type":null,"content_length":"22942","record_id":"<urn:uuid:97d08561-a41c-439c-bdca-f1b8a4ff1959>","cc-path":"CC-MAIN-2014-15/segments/1397609532374.24/warc/CC-MAIN-20140416005212-00323-ip-10-147-4-33.ec2.internal.wa... |
Multiplication by a constant - how?
Sergey Solyanik <Sergey.Solyanik@bentley.com>
14 Mar 1997 00:30:31 -0500
From comp.compilers
| List of all articles for t... | {"url":"http://compilers.iecc.com/comparch/article/97-03-062","timestamp":"2014-04-20T15:53:58Z","content_type":null,"content_length":"6466","record_id":"<urn:uuid:52d909af-4855-4cf8-ac82-1dad81f5b1a3>","cc-path":"CC-MAIN-2014-15/segments/1397609538824.34/warc/CC-MAIN-20140416005218-00603-ip-10-147-4-33.ec2.internal.wa... |
Factorial calculation optimization
February 23rd, 2013, 11:08 AM #1
Join Date
Feb 2012
Thanked 10 Times in 10 Posts
For a problem I'm working on, I need to calculate some very, very large factorials; or at least the first five non-zero digits of said factorial. I've worked out the function:
F(n) = (^(n!... | {"url":"http://www.javaprogrammingforums.com/algorithms-recursion/24368-factorial-calculation-optimization.html","timestamp":"2014-04-18T22:08:35Z","content_type":null,"content_length":"84146","record_id":"<urn:uuid:df879bed-14f8-4c7a-beff-efdddd0ccb50>","cc-path":"CC-MAIN-2014-15/segments/1397609537754.12/warc/CC-MAIN... |
Direction finding systems
A DF system using a circular array of three to eight antennas, analyses the received signals digitally by first calculating at (8) the Fourier transform of the received signals to obtain frequency
information and deriving at (10) from the Fourier transform the relative phases of the received s... | {"url":"http://patents.com/us-4626859.html","timestamp":"2014-04-19T19:41:02Z","content_type":null,"content_length":"38264","record_id":"<urn:uuid:9a73d19c-b74a-449d-ac76-b6029f56e6e8>","cc-path":"CC-MAIN-2014-15/segments/1397609537376.43/warc/CC-MAIN-20140416005217-00000-ip-10-147-4-33.ec2.internal.warc.gz"} |
Bubbles and Math Olympiads
Predicting the geometric shapes of soap bubble clusters can lead to surprisingly difficult mathematical problems.
Frank Morgan of Williams College in Williamstown, Mass., recently illustrated such difficulties when he invited an audience of mathematicians, students, and others to vote on whic... | {"url":"https://www.sciencenews.org/article/bubbles-and-math-olympiads-0","timestamp":"2014-04-17T11:58:14Z","content_type":null,"content_length":"78683","record_id":"<urn:uuid:fd0a35a6-9afe-4e09-864e-478e0a7dc014>","cc-path":"CC-MAIN-2014-15/segments/1397609527423.39/warc/CC-MAIN-20140416005207-00002-ip-10-147-4-33.ec... |
Wolfram Demonstrations Project
Exterior Tangents to Three Circles
Two nonintersecting circles have one pair of common interior tangents and one pair of common exterior tangents. The interior tangents intersect at a point on the segment between the the centers; the
exterior tangents intersect outside that segment when t... | {"url":"http://demonstrations.wolfram.com/ExteriorTangentsToThreeCircles/","timestamp":"2014-04-19T07:11:38Z","content_type":null,"content_length":"41962","record_id":"<urn:uuid:444dcfd6-0fae-41f8-ab4d-d9211bf217b6>","cc-path":"CC-MAIN-2014-15/segments/1397609536300.49/warc/CC-MAIN-20140416005216-00338-ip-10-147-4-33.e... |
Correlations May Not Be What They Seem
Chart In Focus
Correlations May Not Be What They Seem
August 06, 2010
Free Chart In Focus email
Delivered to you every week
A lot of what technical analysts do deals with correlation. The idea of a divergence has to do with two things which move together, and then one of them do... | {"url":"http://www.mcoscillator.com/learning_center/weekly_chart/correlations_may_not_be_what_they_seem/","timestamp":"2014-04-20T13:18:47Z","content_type":null,"content_length":"20209","record_id":"<urn:uuid:08221d2b-7595-4fbd-bca3-1ebdeb130116>","cc-path":"CC-MAIN-2014-15/segments/1397609538787.31/warc/CC-MAIN-201404... |
Sum of reciprocals of squarefree numbers
June 15th 2009, 09:55 PM #1
Sum of reciprocals of squarefree numbers
This one is for fun. I'll give my solution later.
Let $S$ be the set of squarefree positive integers. Show, as simply as you, can that $\sum_{s \in S} \frac{1}{s} = \infty$.
Of course an instant sol... | {"url":"http://mathhelpforum.com/number-theory/92983-sum-reciprocals-squarefree-numbers.html","timestamp":"2014-04-19T03:15:13Z","content_type":null,"content_length":"40408","record_id":"<urn:uuid:328ede97-1fba-45c1-b4db-fdd06fa04afc>","cc-path":"CC-MAIN-2014-15/segments/1397609535745.0/warc/CC-MAIN-20140416005215-0052... |
Summary: Jir Adamek and Lurdes Sousa
Dedicated to Horst Herrlich with a wish of a nice start into the second half of a good life span
For each concrete category (K; U) an extension LIM(K;U) is constructed and under certain
\smallness conditions" it is proved that LIM(K;U) is a solid hull of (K; U ), i.e., the least nal... | {"url":"http://www.osti.gov/eprints/topicpages/documents/record/133/3893700.html","timestamp":"2014-04-18T19:16:11Z","content_type":null,"content_length":"8798","record_id":"<urn:uuid:51c55928-91e4-4802-a8dc-227f79306144>","cc-path":"CC-MAIN-2014-15/segments/1397609535095.7/warc/CC-MAIN-20140416005215-00270-ip-10-147-4... |
RE: pages with MathML
From: <juanrgonzaleza@canonicalscience.com> Date: Fri, 14 Apr 2006 08:27:19 -0700 (PDT) Message-ID: <3309.217.124.69.209.1145028439.squirrel@webmail.canonicalscience.com> To: <www-math@w3.org>
Romeo Anghelache,
It is rather surprising that one can claim that HERMES is generating
semantic content, ... | {"url":"http://lists.w3.org/Archives/Public/www-math/2006Apr/0033.html","timestamp":"2014-04-17T13:19:51Z","content_type":null,"content_length":"12771","record_id":"<urn:uuid:4b329466-c0d3-4ee4-9672-8db46205bd12>","cc-path":"CC-MAIN-2014-15/segments/1397609530131.27/warc/CC-MAIN-20140416005210-00347-ip-10-147-4-33.ec2.... |
A Euclidean Approach to the FTC - Gregory's Proof of the FTC
This Euclidean definition of the tangent is pivotal to Gregory's contradiction. For if KC is not tangent to OEK, it means that some point a on KC must lie above the curve OEK. In particular, if DF is
the line segment perpendicular to OA which intersects OA at... | {"url":"http://www.maa.org/publications/periodicals/convergence/a-euclidean-approach-to-the-ftc-gregorys-proof-of-the-ftc?device=mobile","timestamp":"2014-04-23T19:00:26Z","content_type":null,"content_length":"29327","record_id":"<urn:uuid:4e6a6279-881d-4d53-8a89-35c417141135>","cc-path":"CC-MAIN-2014-15/segments/13982... |
Many Markov components
In my recent preprint, I showed that once $r \ge c / n$ the Metropolis Markov chain on configurations of hard discs is no longer ergodic. In particular, even for reasonably small radius there are
stable configurations of discs. In this note the goal is to make a more quantitative statement about ... | {"url":"http://matthewkahle.wordpress.com/2010/02/22/many-markov-components/?like=1&source=post_flair&_wpnonce=7ebcc2514d","timestamp":"2014-04-21T04:31:26Z","content_type":null,"content_length":"54074","record_id":"<urn:uuid:1362afd9-7aa2-4d98-aa36-18b059d7dcf7>","cc-path":"CC-MAIN-2014-15/segments/1397609539493.17/wa... |
Gibbs sampling
Gibbs sampling is a special case of the Metropolis-Hastings algorithm. From a given state of the variables it randomly moves to another state, preserving the desired equilibrium distribution. The
simplest version is single-site Gibbs sampling, where each variable is visited in turn and sampled from its c... | {"url":"http://research.microsoft.com/en-us/um/cambridge/projects/infernet/docs/Gibbs%20sampling.aspx","timestamp":"2014-04-20T21:09:49Z","content_type":null,"content_length":"15913","record_id":"<urn:uuid:00594452-fe29-4b61-8b68-7366be59f255>","cc-path":"CC-MAIN-2014-15/segments/1397609539230.18/warc/CC-MAIN-201404160... |
'The pea and the sun'
Issue 36
September 2005
The Pea and the sun: a mathematical paradox
by Leonard M. Wapner
The topic of this book - the Banach-Tarski Paradox - is a result so strange and counterintuitive that the author says he didn't believe it when he first saw it. The "paradox" - in fact an impeccable
mathematic... | {"url":"http://plus.maths.org/content/pea-and-sun","timestamp":"2014-04-18T05:51:47Z","content_type":null,"content_length":"27086","record_id":"<urn:uuid:156f2483-2a94-44d8-a773-086d88780d30>","cc-path":"CC-MAIN-2014-15/segments/1397609532573.41/warc/CC-MAIN-20140416005212-00142-ip-10-147-4-33.ec2.internal.warc.gz"} |
Course Descriptions
MATH 5103
Linear Algebra II
Prerequisite: MATH 4003 or consent of the department of mathematics.
A continuation of MATH 4003 with emphasis on abstract vector spaces, inner product spaces, linear transformations, kernel and range, and applications of linear algebra.
Note: MATH 5103 may not be taken f... | {"url":"http://www.atu.edu/academics/catalog-graduate/archive/2012/descriptions/course_desc_page.php?pre=MATH","timestamp":"2014-04-19T14:36:33Z","content_type":null,"content_length":"14496","record_id":"<urn:uuid:533050f1-5eb4-4a25-ae48-9e2ef929faa7>","cc-path":"CC-MAIN-2014-15/segments/1397609537271.8/warc/CC-MAIN-20... |
Perfect Reconstruction Two-channel Filter Bank
Often in digital signal processing the need arises to decompose signals into low and high frequency bands, after which need to be combined to reconstruct the original signal. Such an example is found
in subband coding (SBC). This demo shows an example of perfect reconstruc... | {"url":"http://www.mathworks.de/products/dsp-system/code-examples.html?file=/products/demos/shipping/dsp/pr2chfilterbankdemo.html&nocookie=true","timestamp":"2014-04-25T00:08:54Z","content_type":null,"content_length":"31477","record_id":"<urn:uuid:17eb1c7a-3a68-452b-be13-56657e61d784>","cc-path":"CC-MAIN-2014-15/segmen... |
st: AW: AW: AW: xtline - How can I control add a note and a caption
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 Inde... | {"url":"http://www.stata.com/statalist/archive/2010-05/msg00987.html","timestamp":"2014-04-17T10:11:24Z","content_type":null,"content_length":"11588","record_id":"<urn:uuid:94a7637d-f97e-4639-aff9-6608c4f30291>","cc-path":"CC-MAIN-2014-15/segments/1398223205137.4/warc/CC-MAIN-20140423032005-00312-ip-10-147-4-33.ec2.int... |
series solution!
September 10th 2012, 03:58 AM #1
Jul 2011
series solution!
pls folks, the problem above i have attempted and got the indicial equation as c=1 or -1 and the following series while holding c=1;
what would this be in closed form? pls correct me if i made any mistake. thanks!
Re: series solutio... | {"url":"http://mathhelpforum.com/differential-equations/203212-series-solution.html","timestamp":"2014-04-16T20:21:21Z","content_type":null,"content_length":"34421","record_id":"<urn:uuid:5d9445bf-5800-4d47-ad75-7c7da1411bce>","cc-path":"CC-MAIN-2014-15/segments/1397609524644.38/warc/CC-MAIN-20140416005204-00036-ip-10-... |
L'Hospital's Rule
lim -> infinite (3x+4)/(ln(4+4e^x)) lim -> 0 (2/x^4)-(5/x^2) lim -> infinite (1+(10/x))^(x/4)
Come on...you don't need L'hopitals for any of these. Just think about this As x gets incredibely huge $4+4e^x\to{4e^x}$ So $\ln(4+4e^x)\to\ln(4)+x$ So $\frac{3x+4}{\ln(4+4e^x)}\to\frac{3x+4}{\ln(4)
+x}\t o{3... | {"url":"http://mathhelpforum.com/calculus/56453-l-hospital-s-rule.html","timestamp":"2014-04-23T11:04:49Z","content_type":null,"content_length":"34938","record_id":"<urn:uuid:2046f4d2-51ce-4986-82ce-50467de097cd>","cc-path":"CC-MAIN-2014-15/segments/1398223202457.0/warc/CC-MAIN-20140423032002-00413-ip-10-147-4-33.ec2.i... |
Mathematica Tutorial
Bill Titus, Carleton College
Department of Physics and Astronomy, Northfield, MN 55057-4025 March 1, 2003
These nine, self-paced tutorials that will expose you to various Mathematica tools and skills. Note: You must have Mathematica installed on your computer to open these files. During these tutor... | {"url":"http://serc.carleton.edu/quantskills/tools_data/btitus.html","timestamp":"2014-04-18T14:22:03Z","content_type":null,"content_length":"20242","record_id":"<urn:uuid:f4e8f5e7-644f-4482-aebd-f79f6079881a>","cc-path":"CC-MAIN-2014-15/segments/1398223206147.1/warc/CC-MAIN-20140423032006-00078-ip-10-147-4-33.ec2.inte... |
Spring 2013 Courses
For each of the courses, syllabi are to be handed out in class. Please note that it is possible my teaching assignment could change. Also note that the information here is subject to change (e.g. a
classroom could be moved).
Mathematics 367/367Z (Discrete Probability)
Class numbers 2359 (for AMAT 36... | {"url":"http://www.albany.edu/~martinhi/spring2013courses.html","timestamp":"2014-04-19T03:23:10Z","content_type":null,"content_length":"1512","record_id":"<urn:uuid:0b70a748-ef38-4fca-b9bb-fbcfa00a74c7>","cc-path":"CC-MAIN-2014-15/segments/1398223201753.19/warc/CC-MAIN-20140423032001-00581-ip-10-147-4-33.ec2.internal.... |
equivalence classes
January 20th 2010, 12:44 PM #8
January 20th 2010, 10:08 AM #7
January 20th 2010, 09:47 AM #6
January 20th 2010, 09:44 AM #5
January 20th 2010, 09:41 AM #4
January 20th 2010, 09:33 AM #3
January 20th 2010, 09:30 AM #2
January 20th 2010, 09:25 AM #1
Junior Member
What about saying it a little bett... | {"url":"http://mathhelpforum.com/discrete-math/124591-equivalence-classes.html","timestamp":"2014-04-20T07:18:40Z","content_type":null,"content_length":"73926","record_id":"<urn:uuid:fdbc12ed-50ba-4eb1-8cea-aa07daf34aef>","cc-path":"CC-MAIN-2014-15/segments/1397609538022.19/warc/CC-MAIN-20140416005218-00367-ip-10-147-4... |
kirchhoff's law
Is there, precisely, a
detailed mathematical deduction(proof) of kirchhoff's law
I have read around what I can find in a couple of text books and on the www. It seems as much an article of faith as anything, based on the second law of thermodynamics. You may have to dig further
than just what Google has... | {"url":"http://www.physicsforums.com/showthread.php?s=90f3e92f774720618b817b2bc7d43586&p=4658788","timestamp":"2014-04-19T07:26:23Z","content_type":null,"content_length":"49643","record_id":"<urn:uuid:1c950d26-af6e-4804-b313-4f94ee3d12e1>","cc-path":"CC-MAIN-2014-15/segments/1398223202774.3/warc/CC-MAIN-20140423032002-... |
Mapping a polygon to a unit sphere
I need some suggestions about mapping a polygon to a unit sphere. Kindly help me.
I would look at spherical texture mapping assuming the polygon is a 2d object
mapping a polygon to a unit sphere. You've asked several questions about "mapping" this to that, but you don't really explain... | {"url":"http://www.opengl.org/discussion_boards/showthread.php/180881-Mapping-a-polygon-to-a-unit-sphere","timestamp":"2014-04-21T10:03:00Z","content_type":null,"content_length":"55992","record_id":"<urn:uuid:59a1b937-baf0-4896-8564-cde32f8d0c46>","cc-path":"CC-MAIN-2014-15/segments/1398223205375.6/warc/CC-MAIN-2014042... |
Advanced Mathematics for Computer Science - Page 2 - Math and Physics
For a lot of the topics mentioned (topology, differential geometry, nonlinear dynamics, etc), basically anything where there is a continuum instead of just finite structures, it will be difficult
to make much progress without a solid groundin... | {"url":"http://www.gamedev.net/topic/621988-advanced-mathematics-for-computer-science/page-2","timestamp":"2014-04-23T21:45:38Z","content_type":null,"content_length":"134715","record_id":"<urn:uuid:dfbf3ac5-b010-4e2b-a48d-46318b1165cb>","cc-path":"CC-MAIN-2014-15/segments/1398223203422.8/warc/CC-MAIN-20140423032003-001... |
In Geometry, the Nine-Point Circle is a circle that can be constructed for any given triangle. It is so named because it passes through nine significant points. They include: the midpoint of each
side of the triangle, the foot of each altitude and the midpoint of the segment of each altitude from its vertex to the ... | {"url":"http://www.uff.br/trianglecenters/nine-point-circle.html","timestamp":"2014-04-16T10:21:50Z","content_type":null,"content_length":"6632","record_id":"<urn:uuid:d1d8f799-d88e-4c96-b674-e9ce320809f8>","cc-path":"CC-MAIN-2014-15/segments/1398223201753.19/warc/CC-MAIN-20140423032001-00456-ip-10-147-4-33.ec2.interna... |
Pitch and pitch strength of iterated rippled noise.
ASA 129th Meeting - Washington, DC - 1995 May 30 .. Jun 06
3aPP1. Pitch and pitch strength of iterated rippled noise.
William A. Yost
Sandra J. Guzman
Stanley Sheft
Parmly Hear. Inst., Loyola Univ. Chicago, 6525 N. Sheridan Rd., Chicago, IL 60626
A cascade of add, del... | {"url":"http://www.auditory.org/asamtgs/asa95wsh/3aPP/3aPP1.html","timestamp":"2014-04-17T04:07:01Z","content_type":null,"content_length":"1851","record_id":"<urn:uuid:4acf2689-166d-4596-bd3e-643d68841e1f>","cc-path":"CC-MAIN-2014-15/segments/1398223206120.9/warc/CC-MAIN-20140423032006-00620-ip-10-147-4-33.ec2.internal... |
MathFiction: Mefisto: A Novel (John Banville)
Although the mathematics is only discussed in this novel in the vaguest terms, it is of the greatest importance to the book. Gabriel Swan, the main character/narrator is so focused on numbers and
equations that even his descriptions of non-mathematical situations are descri... | {"url":"http://kasmana.people.cofc.edu/MATHFICT/mfview.php?callnumber=mf147","timestamp":"2014-04-17T07:40:45Z","content_type":null,"content_length":"13207","record_id":"<urn:uuid:35ebdf3b-1e32-4b42-a8df-0db889387fb1>","cc-path":"CC-MAIN-2014-15/segments/1397609526311.33/warc/CC-MAIN-20140416005206-00155-ip-10-147-4-33... |
A stream of primes as Comonad
I figured I've beaten enough around this bush to encircle it with a path half-a-meter in depth. So, I've finally decided to bear down enough to study comonad types and to create my own instance.
The above is a
: this is an introductory guide from a beginner's perspective. YMMV. But, perhap... | {"url":"http://logicaltypes.blogspot.com/2008/09/stream-of-primes-as-comonad.html?showComment=1230642900000","timestamp":"2014-04-17T04:00:45Z","content_type":null,"content_length":"101707","record_id":"<urn:uuid:c112efb1-3704-43a7-b498-c45bd843e5ab>","cc-path":"CC-MAIN-2014-15/segments/1397609526252.40/warc/CC-MAIN-20... |
Get a Half Life: Exponential Equations: Overview of the Lesson
Get a Half Life
Exponential Equations: Overview of the Lesson
Get a Half Life
• The st... | {"url":"http://fcit.usf.edu/fcat8m/resource/notes/halflife.htm","timestamp":"2014-04-21T02:40:06Z","content_type":null,"content_length":"3182","record_id":"<urn:uuid:09610410-139c-49f0-95ab-9c8c3b1652f9>","cc-path":"CC-MAIN-2014-15/segments/1398223206647.11/warc/CC-MAIN-20140423032006-00427-ip-10-147-4-33.ec2.internal.... |
AC (2003), pp. 325-332
Discrete Random Walks, DRW'03
Cyril Banderier and Christian Krattenthaler (eds.)
... | {"url":"http://www.dmtcs.org/dmtcs-ojs/index.php/proceedings/article/viewArticle/dmAC0130/1417","timestamp":"2014-04-20T23:46:39Z","content_type":null,"content_length":"14200","record_id":"<urn:uuid:1080a2f9-f028-4555-8fcc-3ff73104676a>","cc-path":"CC-MAIN-2014-15/segments/1397609539337.22/warc/CC-MAIN-20140416005219-0... |
Section: Linux Programmer's Manual (3) Updated: 2010-09-20 Local index Up
ldexp, ldexpf, ldexpl - multiply floating-point number by integral power of 2
#include <math.h>
double ldexp(double x, int exp);
float ldexpf(float x, int exp);
long double ldexpl(long double x, int exp);
Link with -lm.
Feature Test Macro Require... | {"url":"http://www.makelinux.net/man/3/L/ldexpf","timestamp":"2014-04-17T09:39:34Z","content_type":null,"content_length":"10518","record_id":"<urn:uuid:71229e75-424f-4f10-8ff7-70a87fa060b9>","cc-path":"CC-MAIN-2014-15/segments/1397609527423.39/warc/CC-MAIN-20140416005207-00439-ip-10-147-4-33.ec2.internal.warc.gz"} |
December 2008
This issue's editorial topics
Support Plus — make a difference to mathematics
Were you aware that Plus is entirely funded by grants and donations? It is the generosity of our sponsors, individuals and organisations committed to the public understanding of mathematics, that
enables us to bring you new stor... | {"url":"http://plus.maths.org/content/editorial-8","timestamp":"2014-04-16T11:30:19Z","content_type":null,"content_length":"27059","record_id":"<urn:uuid:8a775b99-337c-4e89-b5a9-61685f518cfc>","cc-path":"CC-MAIN-2014-15/segments/1397609523265.25/warc/CC-MAIN-20140416005203-00043-ip-10-147-4-33.ec2.internal.warc.gz"} |