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Machine Learning :: Text Feature Extraction (tf-idf) - Part II
Originally Authored by Christain S. Perone
Read the first part of this tutorial: Text feature extraction (tf-idf) – Part I.
This post is a continuation of the first part where we started to learn the theory and practice about text feature extraction and vec... | {"url":"http://css.dzone.com/articles/machine-learning-text-feature-0","timestamp":"2014-04-18T00:45:15Z","content_type":null,"content_length":"99933","record_id":"<urn:uuid:1fd6f987-d6b0-41b1-89a7-6c0ee3bc3f1a>","cc-path":"CC-MAIN-2014-15/segments/1398223206118.10/warc/CC-MAIN-20140423032006-00016-ip-10-147-4-33.ec2.i... |
Detecting and predicting changes
Results 1 - 10 of 27
- In , 2003
"... Inducing causal relationships from observations is a classic problem in scientific inference, statistics, and machine learning. It is also a central part of human learning, and a task that
people perform remarkably well given its notorious difficult... | {"url":"http://citeseerx.ist.psu.edu/showciting?cid=9636514","timestamp":"2014-04-20T20:18:19Z","content_type":null,"content_length":"40094","record_id":"<urn:uuid:e53ebd7f-94f5-44f7-89cc-d3c1dcc5937c>","cc-path":"CC-MAIN-2014-15/segments/1397609539066.13/warc/CC-MAIN-20140416005219-00585-ip-10-147-4-33.ec2.internal.wa... |
Patent US5767648 - Base force/torque sensor apparatus for the precise control of manipulators with joint friction and a method of use thereof
A preferred embodiment of the apparatus of the invention is shown schematically in block diagram form in FIG. 1. A manipulator 10 has a base 12, which is connected to a reference... | {"url":"http://www.google.com/patents/US5767648?ie=ISO-8859-1&dq=%E2%80%9Cconfiguration+using+structure+and+rules+to+provide+a+user+interface.%E2%80%9D","timestamp":"2014-04-19T12:42:57Z","content_type":null,"content_length":"185712","record_id":"<urn:uuid:cfa5775b-76ff-459e-bc57-0b989b3f3587>","cc-path":"CC-MAIN-2014-... |
Winchester, MA SAT Math Tutor
Find a Winchester, MA SAT Math Tutor
...I've worked with hundreds of students, both one-on-one and in classrooms, of ALL ages, backgrounds, and ability levels - from those in middle and high school to Harvard and MIT undergraduate
and graduate students and adults in their forties. MY P... | {"url":"http://www.purplemath.com/Winchester_MA_SAT_Math_tutors.php","timestamp":"2014-04-17T04:32:37Z","content_type":null,"content_length":"23986","record_id":"<urn:uuid:9a64e21f-78d6-4355-a090-18daf6cf825c>","cc-path":"CC-MAIN-2014-15/segments/1398223211700.16/warc/CC-MAIN-20140423032011-00495-ip-10-147-4-33.ec2.int... |
Taylor Series and shifting indices
May 15th 2011, 10:48 AM #1
Junior Member
Oct 2010
Taylor Series and shifting indices
For the truncated form of the Taylor series, the Nth Taylor polynomial is given in our notes as
$T_{N}(x) = \sum_{n = 0}^N \frac{f^{(n)}(0)}{n!} \cdot x^{n}$
But then later, he defines... | {"url":"http://mathhelpforum.com/differential-geometry/180670-taylor-series-shifting-indices.html","timestamp":"2014-04-19T20:26:21Z","content_type":null,"content_length":"36716","record_id":"<urn:uuid:70845846-f6e5-4d51-8b17-c66eb6d3b96a>","cc-path":"CC-MAIN-2014-15/segments/1397609537376.43/warc/CC-MAIN-2014041600521... |
Theory of linear and integer programming, Wiley-Interscience Series in Discrete Mathematics
Results 1 - 10 of 106
- Journal of Artificial Intelligence Research , 1996
"... This paper surveys the field of reinforcement learning from a computer-science perspective. It is written to be accessible to researchers familiar w... | {"url":"http://citeseerx.ist.psu.edu/showciting?cid=215599","timestamp":"2014-04-17T23:22:08Z","content_type":null,"content_length":"39130","record_id":"<urn:uuid:66e6ec16-8585-40fe-be57-cdfaf470bccb>","cc-path":"CC-MAIN-2014-15/segments/1397609532128.44/warc/CC-MAIN-20140416005212-00518-ip-10-147-4-33.ec2.internal.war... |
Why is the sum of 1-2+3-4+... is 1/4?
April 25th 2010, 09:00 AM #14
April 25th 2010, 08:57 AM #13
April 25th 2010, 08:54 AM #12
April 25th 2010, 08:32 AM #11
MHF Contributor
April 25th 2010, 07:39 AM #10
Senior Member
April 25th 2010, 06:20 AM #9
Senior Member
April 25th 2010, 05:56 AM #8
April 25th 2010, 05:44 AM #7
S... | {"url":"http://mathhelpforum.com/algebra/141062-why-sum-1-2-3-4-1-4-a.html","timestamp":"2014-04-19T15:20:52Z","content_type":null,"content_length":"77140","record_id":"<urn:uuid:35db392c-34e1-4546-ab6a-7ca3acc92896>","cc-path":"CC-MAIN-2014-15/segments/1397609537271.8/warc/CC-MAIN-20140416005217-00465-ip-10-147-4-33.e... |
Geographic Geometry - 1
The Great Pyramid is aligned with Machu Picchu, the Nazca lines and Easter Island along a straight line around the center of the Earth, within a margin of error of less than one tenth of one degree
of latitude.
Other sites of ancient construction that are also within one tenth of one degree of t... | {"url":"http://www.bibliotecapleyades.net/esp_geographic_geometry_1.htm","timestamp":"2014-04-20T13:36:15Z","content_type":null,"content_length":"83775","record_id":"<urn:uuid:c72ba3e1-a6e2-4e2a-92e8-c92debba8ba7>","cc-path":"CC-MAIN-2014-15/segments/1397609538787.31/warc/CC-MAIN-20140416005218-00601-ip-10-147-4-33.ec2... |
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can u all help me to differentiate this, i try but still did n... | {"url":"http://openstudy.com/updates/50ced880e4b0031882dca376","timestamp":"2014-04-19T02:18:48Z","content_type":null,"content_length":"46874","record_id":"<urn:uuid:b0b7ed37-aea7-4af5-bed8-e4e36685846c>","cc-path":"CC-MAIN-2014-15/segments/1397609535745.0/warc/CC-MAIN-20140416005215-00421-ip-10-147-4-33.ec2.internal.w... |
Infinity - Hashem
Take a six-inch stick and divide it in half. You now have two sticks made of three inches each. Now divide those halves in half. Keep dividing them over and over again. How many pieces can you divide
them into? Infinity, right? OK, now take a football field, and divide it into half, and then again in ... | {"url":"http://www.jewswithquestions.com/index.php?/topic/4-infinity/","timestamp":"2014-04-17T00:48:09Z","content_type":null,"content_length":"73936","record_id":"<urn:uuid:468cff52-9111-4606-ba81-6f4f8d772686>","cc-path":"CC-MAIN-2014-15/segments/1398223206770.7/warc/CC-MAIN-20140423032006-00662-ip-10-147-4-33.ec2.in... |
Motion With Graphs
Position vs. Time Graphs:
1. Graphs are commonly used in physics. They give us much information about the concepts and we can infer many things. Let’s talk about this position vs. time graph. As you see on the graph, X axis
shows us time and Y axis shows position. We observe that velocity is con... | {"url":"http://www.physicstutorials.org/home/mechanics/1d-kinematics/free-fall/12-motion-with-graphs?showall=1","timestamp":"2014-04-21T14:41:13Z","content_type":null,"content_length":"31613","record_id":"<urn:uuid:3d8d65cc-0ab2-41ca-95af-084c4f82b35b>","cc-path":"CC-MAIN-2014-15/segments/1397609540626.47/warc/CC-MAIN-... |
Fibonacci Words ACM ICPC 2012
Hi. I am new on this forum. I joined because I am preparing for a programming contest, and I tried to solve the fibonacci words ACM ICPC 2012 problem, but I was getting an OutOfMemoryError. Can
anyone please help me? Here'e the code
import java.util.Scanner;
public class FibonacciWords {
... | {"url":"http://www.dreamincode.net/forums/topic/293888-fibonacci-words-acm-icpc-2012-problem/page__pid__1719565__st__0","timestamp":"2014-04-18T07:45:14Z","content_type":null,"content_length":"116658","record_id":"<urn:uuid:b2014f47-041a-42d3-8e9f-5cb34ced78e3>","cc-path":"CC-MAIN-2014-15/segments/1397609532573.41/warc... |
Holliston Math Tutor
Find a Holliston Math Tutor
My tutoring experience has been vast in the last 10+ years. I have covered several core subjects with a concentration in math. I currently hold a master's degree in math and have used it to tutor
a wide array of math courses.
36 Subjects: including logic, ACT Math,... | {"url":"http://www.purplemath.com/holliston_ma_math_tutors.php","timestamp":"2014-04-20T15:55:18Z","content_type":null,"content_length":"23638","record_id":"<urn:uuid:9f80b234-3c33-4dc8-afd7-627401a64a11>","cc-path":"CC-MAIN-2014-15/segments/1397609538824.34/warc/CC-MAIN-20140416005218-00584-ip-10-147-4-33.ec2.internal... |
Homework Help
Recent Homework Questions About Trigonometry
Post a New Question | Current Questions
Four wires support a 40-meter radio tower. Two wires are attached to the top and two wires are attached to the center of the tower. The wires are anchored to the ground 30-meters from the base of the
Tuesday, February 26,... | {"url":"http://www.jiskha.com/math/trigonometry/?page=10","timestamp":"2014-04-18T13:49:24Z","content_type":null,"content_length":"34475","record_id":"<urn:uuid:fa625e8e-6de8-4318-b235-4734553226ad>","cc-path":"CC-MAIN-2014-15/segments/1397609533689.29/warc/CC-MAIN-20140416005213-00091-ip-10-147-4-33.ec2.internal.warc.... |
Carl Yerger
Here is a page with links to preliminary copies of papers submitted to various mathematical journals and conference proceedings.
1. A. Benjamin and C. Yerger, A combinatorial interpretation of the wheel graph, Bull. Inst. Combin. Appl. 48 (2006), 53--62. 47 (2006), 37--42. pdf
2. C. Yerger, Monochromatic an... | {"url":"http://www.carlyerger.com/publications.html","timestamp":"2014-04-19T15:08:23Z","content_type":null,"content_length":"5266","record_id":"<urn:uuid:b4cd4f2f-df12-415d-9578-c1be284aef16>","cc-path":"CC-MAIN-2014-15/segments/1398223203422.8/warc/CC-MAIN-20140423032003-00540-ip-10-147-4-33.ec2.internal.warc.gz"} |
South Lawrence, MA Geometry Tutor
Find a South Lawrence, MA Geometry Tutor
...I use my love of math to find the best approach for each student. That being said, I try to make math fun. Math is a challenging subject for many people out there!
8 Subjects: including geometry, calculus, algebra 1, algebra 2
...Ther... | {"url":"http://www.purplemath.com/South_Lawrence_MA_Geometry_tutors.php","timestamp":"2014-04-20T09:03:58Z","content_type":null,"content_length":"24354","record_id":"<urn:uuid:c03a8df5-5ec1-4d96-b237-c2e72ce183df>","cc-path":"CC-MAIN-2014-15/segments/1397609538110.1/warc/CC-MAIN-20140416005218-00163-ip-10-147-4-33.ec2.... |
The Boat Moves Alonga Path Defined By , Where Is ... | Chegg.com
determine the radial component of the boat's velocity at the instant t = 1 {\rm s}.
The boat moves alonga path defined by
, where
is in radians.
, where
is in seconds, determine theradial component of the boat's velocity at the instant
= 1
Answers (1)
•... | {"url":"http://www.chegg.com/homework-help/questions-and-answers/boat-moves-alonga-path-defined-radians-seconds-determine-theradial-component-boat-s-veloci-q750706","timestamp":"2014-04-17T14:02:43Z","content_type":null,"content_length":"24731","record_id":"<urn:uuid:b54ade4e-25b7-4896-b383-9410622d0379>","cc-path":"CC... |
Plandome, NY Math Tutor
Find a Plandome, NY Math Tutor
...Statistics is pretty much the same regardless of the content area. I’ve been tutoring and teaching since 1985 when I received my master's degree in biostatistics at the University of Texas
School of Public Health. I received a master's in epidemiology from C... | {"url":"http://www.purplemath.com/plandome_ny_math_tutors.php","timestamp":"2014-04-20T01:47:31Z","content_type":null,"content_length":"23973","record_id":"<urn:uuid:de23cb26-4654-4e01-82e6-209e0ecbe96d>","cc-path":"CC-MAIN-2014-15/segments/1397609537804.4/warc/CC-MAIN-20140416005217-00133-ip-10-147-4-33.ec2.internal.w... |
differential equation- wordy question 2-
September 1st 2006, 07:16 PM
differential equation- wordy question 2-
A battery is being charged. The charging rate is modelled by dq/dt=k(Q-q), where q is the charge in the battery( measured in ampere hours) at time t( measured in hours), Q is the maximum charge
the bat... | {"url":"http://mathhelpforum.com/calculus/5293-differential-equation-wordy-question-2-a-print.html","timestamp":"2014-04-18T11:50:30Z","content_type":null,"content_length":"8713","record_id":"<urn:uuid:2d834b23-68d1-4edb-85ff-2707fa317471>","cc-path":"CC-MAIN-2014-15/segments/1397609533308.11/warc/CC-MAIN-2014041600521... |
Peter Jossen
( CEU)
Subgroups of Mordell--Weil groups and reduction mod p
Let a_1, ..., a_n and b be nonzero rational numbers. A theorem of Schinzel st... | {"url":"http://www.renyi.hu/~seminar/FIKUSZ/pjossen.html","timestamp":"2014-04-17T00:49:23Z","content_type":null,"content_length":"2997","record_id":"<urn:uuid:b2969740-3bdf-47c1-bbd7-b1fdd0f8a0c9>","cc-path":"CC-MAIN-2014-15/segments/1397609526102.3/warc/CC-MAIN-20140416005206-00337-ip-10-147-4-33.ec2.internal.warc.gz... |
"Derivative" is an easy to use free and open-source (LGPL v3) application to calculate mathematical derivatives with many features :
• ordinary and partial derivatives from 1 to 3 variables;
• multiple derivatives;
• calculation of gradient, divergent, curl and laplacian in 3 dimensions and different coordinate s... | {"url":"http://www.robertocolistete.net/Derivative/","timestamp":"2014-04-17T18:23:49Z","content_type":null,"content_length":"11932","record_id":"<urn:uuid:10c852e6-76a2-4fcd-93ab-f7b2749dc305>","cc-path":"CC-MAIN-2014-15/segments/1397609537754.12/warc/CC-MAIN-20140416005217-00279-ip-10-147-4-33.ec2.internal.warc.gz"} |
Series Problem
March 23rd 2010, 08:43 PM
Series Problem
Consider the following infinite series.
$3 - 3x + 3x^2 - 3x^3 + 3x^4 - ...$
(a) For what values of x will the sum of the series be a finite value?
(b) Find the value of the infinite series for x in the interval in part (a).
Could somebody expla... | {"url":"http://mathhelpforum.com/calculus/135343-series-problem-print.html","timestamp":"2014-04-19T00:37:19Z","content_type":null,"content_length":"6340","record_id":"<urn:uuid:b34a23a7-9243-4ff3-be6c-afcbf6331afc>","cc-path":"CC-MAIN-2014-15/segments/1398223206647.11/warc/CC-MAIN-20140423032006-00626-ip-10-147-4-33.e... |
Are there infinitely many additive prime numbers?
up vote -5 down vote favorite
Notation: For any $n\geq 1$ let $p_{n}$ be $n$-th prime number.
Definition: A prime number $p_{n}$ is "additive" iff $p_{n}=\sum_{i<n} p_{i}$
Example: $5$ is an additive prime number.
Question (1): What is the least additive prime number la... | {"url":"http://mathoverflow.net/questions/146095/are-there-infinitely-many-additive-prime-numbers","timestamp":"2014-04-19T04:41:52Z","content_type":null,"content_length":"58488","record_id":"<urn:uuid:f84b8913-4a7a-47b5-b1fd-130da96fd20e>","cc-path":"CC-MAIN-2014-15/segments/1397609535775.35/warc/CC-MAIN-2014041600521... |
Westford, MA Statistics Tutor
Find a Westford, MA Statistics Tutor
...Now I speak with my two young children in Arabic predominantly. First I would say that I've taught many, many hours of elementary school education. I now have two eighth graders that I tutor to
and I received high marks for that.
47 Subjects: i... | {"url":"http://www.purplemath.com/Westford_MA_statistics_tutors.php","timestamp":"2014-04-18T04:02:11Z","content_type":null,"content_length":"24057","record_id":"<urn:uuid:3c4d1b6c-748a-41a0-a905-09d0fc225f9c>","cc-path":"CC-MAIN-2014-15/segments/1397609532480.36/warc/CC-MAIN-20140416005212-00005-ip-10-147-4-33.ec2.int... |
Tricky induction problem with trig
June 21st 2013, 08:04 PM #1
Apr 2010
Tricky induction problem with trig
Okay, I'm working on a really tricky induction problem where I have to show the following (assuming that $\sin{(x/2)}eq0$):
$\sin{(x)}+2\sin{(2x)}+\ldots +n\sin{(nx)}=\frac{\sin{[(n+1)x]}}{4\sin^2{(x/2... | {"url":"http://mathhelpforum.com/trigonometry/220062-tricky-induction-problem-trig.html","timestamp":"2014-04-18T01:59:54Z","content_type":null,"content_length":"56437","record_id":"<urn:uuid:3a12edf9-e5ab-43d0-8b75-a0f64916e46a>","cc-path":"CC-MAIN-2014-15/segments/1397609532374.24/warc/CC-MAIN-20140416005212-00506-ip... |
Zentralblatt MATH
Publications of (and about) Paul Erdös
Zbl.No: 223.10005
Autor: Erdös, Paul; Turán, P.
Title: On some problems of a statistical group theory. V. (In English)
Source: Period. Math. Hung. 1, 5-13 (1971).
Review: [Part IV, A... | {"url":"http://www.emis.de/classics/Erdos/cit/22310005.htm","timestamp":"2014-04-20T05:46:09Z","content_type":null,"content_length":"4653","record_id":"<urn:uuid:2efe6ead-67a2-411f-ad0d-fdafb031fa79>","cc-path":"CC-MAIN-2014-15/segments/1398223207985.17/warc/CC-MAIN-20140423032007-00511-ip-10-147-4-33.ec2.internal.warc... |
MathGroup Archive: November 2011 [00508]
[Date Index] [Thread Index] [Author Index]
Re: Loop problem
• To: mathgroup at smc.vnet.net
• Subject: [mg123064] Re: Loop problem
• From: Bill Rowe <readnews at sbcglobal.net>
• Date: Tue, 22 ... | {"url":"http://forums.wolfram.com/mathgroup/archive/2011/Nov/msg00508.html","timestamp":"2014-04-17T18:38:05Z","content_type":null,"content_length":"26261","record_id":"<urn:uuid:a8c4eccd-7fec-4efb-85d1-1e95377f02ac>","cc-path":"CC-MAIN-2014-15/segments/1398223203422.8/warc/CC-MAIN-20140423032003-00154-ip-10-147-4-33.e... |
Another trigonometric equation
July 6th 2009, 04:49 PM #1
Oct 2008
Another trigonometric equation
If I had the equation 2cosx + sinx = 1 then I could express it as
√5 cos (x-26.6) = 1. I have no problem when it's like this
However, if it was 2sinx + cosx = 1, how could I do it? would it be
√5 sin (x... | {"url":"http://mathhelpforum.com/trigonometry/94551-another-trigonometric-equation.html","timestamp":"2014-04-16T10:52:02Z","content_type":null,"content_length":"38819","record_id":"<urn:uuid:471ed5f0-f767-49b3-bb8d-9f5cff509b6b>","cc-path":"CC-MAIN-2014-15/segments/1397609538787.31/warc/CC-MAIN-20140416005218-00288-ip... |
Toss a Coin Six Times
Date: 02/07/98 at 16:59:43
From: Ruth Beldon
Subject: Coin tossing probabilities
A. Suppose a coin is tossed 6 times. What is the probability that 6
heads will occur? (Answer: 1/64)
B. What is the probablity that 3 heads will occur? (Book answer: 5/16)
6/3 x 1/2 to 3rd power x 1/2 to 3rd po... | {"url":"http://mathforum.org/library/drmath/view/56589.html","timestamp":"2014-04-19T08:40:12Z","content_type":null,"content_length":"6855","record_id":"<urn:uuid:6214d5c3-95a1-49a5-bc0a-263e4e15a8c3>","cc-path":"CC-MAIN-2014-15/segments/1397609536300.49/warc/CC-MAIN-20140416005216-00178-ip-10-147-4-33.ec2.internal.war... |
Complete Meaning and
Complete ^
Dictionary | Wikipedia | Synonyms | Quotation | News
Complete Meaning and Definition
WordNet (r) 2.0
complete adj
1. having every necessary or normal part or component or step; "a complete meal"; "a complete wardrobe"; "a complete set pf the Britannica"; "a complete set of china"... | {"url":"http://www.dictionary30.com/meaning/Complete","timestamp":"2014-04-20T13:19:18Z","content_type":null,"content_length":"27185","record_id":"<urn:uuid:b9fa6513-ae16-4714-ab22-48205d43ed97>","cc-path":"CC-MAIN-2014-15/segments/1398223210034.18/warc/CC-MAIN-20140423032010-00380-ip-10-147-4-33.ec2.internal.warc.gz"} |
question - My Math Forum
December 14th, #3
2011, 09:17 PM
Joined: Apr Re: question
For the $10,000 you can just take i... | {"url":"http://mymathforum.com/economics/23281-question.html","timestamp":"2014-04-20T05:42:11Z","content_type":null,"content_length":"30050","record_id":"<urn:uuid:fd77168e-2d87-4470-9fbc-68ea3ad82f19>","cc-path":"CC-MAIN-2014-15/segments/1398223206672.15/warc/CC-MAIN-20140423032006-00519-ip-10-147-4-33.ec2.internal.w... |
Double class
I regularily deal with a huge number of elementary functions as rounding, transcendentals, exponential and logarithm and was unsatisfied with the average performance. So, I started to provide my own
assembler subroutines executing with full floating-point performance on any Intel Pentium II+ or compatible ... | {"url":"http://documents.epfl.ch/users/l/le/leuteneg/www/MATLABToolbox/DoubleClass.html","timestamp":"2014-04-17T07:05:52Z","content_type":null,"content_length":"11959","record_id":"<urn:uuid:05c5a276-01d4-4f6b-ba17-6a7076a4f9b5>","cc-path":"CC-MAIN-2014-15/segments/1397609526311.33/warc/CC-MAIN-20140416005206-00343-ip... |
Re: using linux instead of osf
Scott Locklin (locklin@lonsdale.lbl.gov)
Thu, 28 Nov 1996 00:25:12 -0600 (CST)
On Wed, 27 Nov 1996, Michal Jaegermann wrote:
> >
> > Don't quote me on the "Taylor" part. Actually, upon closer inspection
> > there is a comment that simply says "polynomial of degree 13"
Well, it's "taylor" ... | {"url":"http://www.alphalinux.org/archives/axp-list/1996/November1996/1291.html","timestamp":"2014-04-19T08:07:47Z","content_type":null,"content_length":"5656","record_id":"<urn:uuid:2b652783-b8f1-4d56-aef8-6d76bb0701d7>","cc-path":"CC-MAIN-2014-15/segments/1398223210034.18/warc/CC-MAIN-20140423032010-00320-ip-10-147-4... |
Noncommutative projective surfaces
Seminar Room 1, Newton Institute
We discuss recent work, joint with Toby Stafford, which describes a large class of noncommutative surfaces in terms of blowing up. Specifically, let A be a connected graded noetherian algebra,
generated in degree 1, and suppose that the graded quotient... | {"url":"http://www.newton.ac.uk/programmes/NCG/seminars/2006122014001.html","timestamp":"2014-04-17T00:52:29Z","content_type":null,"content_length":"4396","record_id":"<urn:uuid:828ae2bf-f56c-4e46-9671-4d949ea59ebb>","cc-path":"CC-MAIN-2014-15/segments/1398223202548.14/warc/CC-MAIN-20140423032002-00350-ip-10-147-4-33.e... |
Orwell Temperaments
Commas and Generators
In terms of octave and generator, Orwell is defined by a generator which is a somewhat sharp (four or five cents worth) subminor third. While of some interest as a five-limit temperament, with a
comma of 2109375/2097152, it really comes into its own as a seven-limit temperament... | {"url":"http://lumma.org/tuning/gws/orwell.html","timestamp":"2014-04-18T15:39:39Z","content_type":null,"content_length":"4669","record_id":"<urn:uuid:5ddc8521-ccd1-44e3-9827-e68b35c33573>","cc-path":"CC-MAIN-2014-15/segments/1397609533957.14/warc/CC-MAIN-20140416005213-00372-ip-10-147-4-33.ec2.internal.warc.gz"} |
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During the last sunspot cycle between 1996-2008, over 21,000 flares and 13,000 clouds of plasma exploded from the Sun's magnetically active surface. These events create space weather. Students will
learn more about space weather and... | {"url":"http://nasawavelength.org/resource-search?facetSort=1&topicsSubjects=Mathematics%3ANumber+and+operations&educationalLevel=Middle+school&resourceType=Instructional+materials%3AProblem+set","timestamp":"2014-04-18T18:00:04Z","content_type":null,"content_length":"71639","record_id":"<urn:uuid:1ef6705a-ce30-4fb3-95... |
Independent and Dependent Variables Examples Page 3
Fred and John are brothers. John, who is the older of the two and was largely deprived of attention as a young boy, is constantly trying to one - up Fred. Both brothers enjoy clothes shopping.
However, because of John's competitiveness, every time Fred buys a new pair... | {"url":"http://www.shmoop.com/algebraic-expressions/independent-dependent-variables-examples-3.html","timestamp":"2014-04-16T08:25:14Z","content_type":null,"content_length":"37484","record_id":"<urn:uuid:d9de0a46-6f98-405b-96e6-4942d6c142a1>","cc-path":"CC-MAIN-2014-15/segments/1397609521558.37/warc/CC-MAIN-20140416005... |
Independent Study (SpSt 997) Draft
Implications of Magnitude Distribution Comparisons
between Trans-Neptunian Objects and Comets
... | {"url":"http://www.princeton.edu/~willman/tno-comet/","timestamp":"2014-04-20T08:02:50Z","content_type":null,"content_length":"51787","record_id":"<urn:uuid:b857186e-1faf-4f4d-be5c-dc128e133bfb>","cc-path":"CC-MAIN-2014-15/segments/1397609538022.19/warc/CC-MAIN-20140416005218-00263-ip-10-147-4-33.ec2.internal.warc.gz"} |
Ready? Here we go.
Start with a solenoid. Run current through it and you've got yourself an electromagnet. The field inside is given by the formula …
At the same time, a solenoid is also a device for capturing flux.
Φ[B] = NBA
The static situation is certainly interesting enough, but when it comes to flux, what we real... | {"url":"http://physics.info/inductance/","timestamp":"2014-04-24T08:51:47Z","content_type":null,"content_length":"44893","record_id":"<urn:uuid:2589e5c3-61f1-45fc-aecd-e600b1c6a9dd>","cc-path":"CC-MAIN-2014-15/segments/1398223206118.10/warc/CC-MAIN-20140423032006-00368-ip-10-147-4-33.ec2.internal.warc.gz"} |
188 helpers are online right now
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Conversion To Metric (Metric Conversion) - Your Online Conversion To Metric Calculator
Welcome to Conversion To Metric. Our website is all about fast and convenience. Whether you're researching or doing your assignments at work or in your school, you always want to get the quick and
easy results for converting units fr... | {"url":"http://conversiontometric.com/","timestamp":"2014-04-19T17:02:11Z","content_type":null,"content_length":"5876","record_id":"<urn:uuid:b608c0d9-c611-489c-bfa0-97d8cbbfc989>","cc-path":"CC-MAIN-2014-15/segments/1397609537308.32/warc/CC-MAIN-20140416005217-00330-ip-10-147-4-33.ec2.internal.warc.gz"} |
How do I check if a functor has a (left/right) adjoint?
up vote 53 down vote favorite
Because adjoint functors are just cool, and knowing that a pair of functors is an adjoint pair gives you a bunch of information from generalized abstract nonsense, I often find myself saying, "Hey,
cool functor. Wonder if it has an ad... | {"url":"http://mathoverflow.net/questions/5786/how-do-i-check-if-a-functor-has-a-left-right-adjoint?sort=oldest","timestamp":"2014-04-18T18:39:14Z","content_type":null,"content_length":"126033","record_id":"<urn:uuid:a5b15401-d5d2-4314-8ebc-2e95aca998fe>","cc-path":"CC-MAIN-2014-15/segments/1398223203841.5/warc/CC-MAIN... |
A strange exercise with matrix norm!
March 22nd 2009, 01:15 AM #1
Mar 2009
A strange exercise with matrix norm!
Let the maximum norm $||x||_{\infty}=max|x_i|$ (example: $||(2,-4,1)||_{\infty}=4)$
How can we compute the corresponding matrix norm defined as:
$||A||_{\infty}=max\frac{\|Ax||_{\infty}}{\|x||... | {"url":"http://mathhelpforum.com/advanced-algebra/79886-strange-exercise-matrix-norm.html","timestamp":"2014-04-18T15:11:23Z","content_type":null,"content_length":"35805","record_id":"<urn:uuid:fee0b95b-8d91-4b96-8714-82af6a18268e>","cc-path":"CC-MAIN-2014-15/segments/1397609533689.29/warc/CC-MAIN-20140416005213-00215-... |
parametric equation
December 6th 2006, 09:20 PM
parametric equation
If Lsub1 has parametric equation x=1+3t, y=1+t, z=4-t, and Lsub2 has parametric equation x=7-6t, y=-2t, z=3+2t, then Lsub1 and Lsub2 are parallel.
The answer is true.
Please show me why it is true. Thank you very much.
December 6th 2006, 10... | {"url":"http://mathhelpforum.com/calculus/8526-parametric-equation-print.html","timestamp":"2014-04-19T10:13:36Z","content_type":null,"content_length":"10796","record_id":"<urn:uuid:f915aec1-5125-49ab-ac43-348e20c387a0>","cc-path":"CC-MAIN-2014-15/segments/1397609537097.26/warc/CC-MAIN-20140416005217-00660-ip-10-147-4-... |
Golden Angle
Illustration showing the golden angle. The golden angle is the smaller of two angles created by dividing the circumference of a circle according to the golden section. The ratio of the length of the
larger arc to the smaller arc is equal to the ratio of the entire circumference to the larger arc. The golde... | {"url":"http://etc.usf.edu/clipart/42900/42979/golden-angle_42979.htm","timestamp":"2014-04-20T01:08:45Z","content_type":null,"content_length":"12399","record_id":"<urn:uuid:c0b66f92-ac2a-4b81-80da-da915982c1ab>","cc-path":"CC-MAIN-2014-15/segments/1398223210034.18/warc/CC-MAIN-20140423032010-00028-ip-10-147-4-33.ec2.i... |
Decimals to Fractions Worksheet
Change Decimals to Fractions
Objective: I can change decimals to fractions.
Decimals are special fractions.
The place of the decimal point tells us the denominator of these fractions.
The first place to the right of the decimal point has a denominator of 10.
The second place to the right... | {"url":"http://www.onlinemathlearning.com/decimals-to-fractions.html","timestamp":"2014-04-18T08:04:06Z","content_type":null,"content_length":"68611","record_id":"<urn:uuid:c5a27f20-82c2-4280-bfec-8af11b268e8c>","cc-path":"CC-MAIN-2014-15/segments/1397609533121.28/warc/CC-MAIN-20140416005213-00650-ip-10-147-4-33.ec2.in... |
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When a ball is thrown straight up, is there any point at which... | {"url":"http://openstudy.com/updates/4f515ebde4b019d0ebafc11e","timestamp":"2014-04-17T09:46:06Z","content_type":null,"content_length":"39496","record_id":"<urn:uuid:e3725fc9-7428-4202-883e-009753f98ce2>","cc-path":"CC-MAIN-2014-15/segments/1398223206120.9/warc/CC-MAIN-20140423032006-00232-ip-10-147-4-33.ec2.internal.w... |
[SciPy-User] Q: Provide .H for numpy arrays?
Dag Sverre Seljebotn dagss@student.matnat.uio...
Thu Oct 14 12:05:28 CDT 2010
On 10/14/2010 04:30 PM, Nico Schlömer wrote:
>> In any case, I think that you need to raise this issue on the list for discussion.
> Raise!
> Now here's what for discussion:
> I noticed that one di... | {"url":"http://mail.scipy.org/pipermail/scipy-user/2010-October/026985.html","timestamp":"2014-04-17T04:16:54Z","content_type":null,"content_length":"5015","record_id":"<urn:uuid:c4bd8048-2060-4b85-9539-ab5c691ca448>","cc-path":"CC-MAIN-2014-15/segments/1397609526252.40/warc/CC-MAIN-20140416005206-00056-ip-10-147-4-33.... |
all.equal {base}
Test if Two Objects are (Nearly) Equal
all.equal(x, y) is a utility to compare R objects x and y testing ‘near equality’. If they are different, comparison is still made to some extent, and a report of the differences is returned. Don't
use all.equal directly in if expressions---either use isTRUE(all.e... | {"url":"http://www.inside-r.org/r-doc/base/all.equal","timestamp":"2014-04-19T05:25:51Z","content_type":null,"content_length":"26019","record_id":"<urn:uuid:b2deb9b2-c83f-4b13-9dc3-690288609277>","cc-path":"CC-MAIN-2014-15/segments/1397609535775.35/warc/CC-MAIN-20140416005215-00523-ip-10-147-4-33.ec2.internal.warc.gz"} |
[FOM] Indispensability of the natural numbers
Timothy Y. Chow tchow at alum.mit.edu
Tue May 18 09:15:44 EDT 2004
On Tue, 18 May 2004, Vladimir Sazonov wrote:
> Whatever are our beliefs, the mental concept of the natural numbers
> is something vague, anyway. It is only illusion of something solid.
Do you agree that our ... | {"url":"http://www.cs.nyu.edu/pipermail/fom/2004-May/008177.html","timestamp":"2014-04-16T22:14:28Z","content_type":null,"content_length":"4209","record_id":"<urn:uuid:2ed1d167-a994-46b8-9ed3-9463eefb604d>","cc-path":"CC-MAIN-2014-15/segments/1397609525991.2/warc/CC-MAIN-20140416005205-00645-ip-10-147-4-33.ec2.internal... |
H Interpolation and interpolation hash searching Res Rep 76-02
- J. Assoc. Comput. Mach , 1978
"... ABSTRACT When open addressing IS used to resolve collisions in a hash table, a given set of keys may be arranged in many ways, typically this depends on the order in which the keys are inserted
It is shown that arrangeme... | {"url":"http://citeseerx.ist.psu.edu/showciting?cid=3780975","timestamp":"2014-04-17T15:35:26Z","content_type":null,"content_length":"12318","record_id":"<urn:uuid:2eda3563-810c-4390-a72d-2e5124fe1ca9>","cc-path":"CC-MAIN-2014-15/segments/1397609530136.5/warc/CC-MAIN-20140416005210-00556-ip-10-147-4-33.ec2.internal.war... |
Melrose, MA Precalculus Tutor
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...My schedule is flexible as I am a part time graduate student. I am new to Wyzant but very experienced in tutoring, so if you would like to meet first before a real lesson to see if we are a
good fit, I am willing to arrange that.I was a swim teac... | {"url":"http://www.purplemath.com/Melrose_MA_Precalculus_tutors.php","timestamp":"2014-04-19T15:11:21Z","content_type":null,"content_length":"24139","record_id":"<urn:uuid:6c707c5f-3c76-4f1a-8599-3aaa1cc63c30>","cc-path":"CC-MAIN-2014-15/segments/1397609537271.8/warc/CC-MAIN-20140416005217-00416-ip-10-147-4-33.ec2.inte... |
Motion in Two Dimensions
Next: Scalars and Vectors Up: Main physics index Previous: Motion in Two Dimensions
In two dimensions, it is necessary to use vector notation to describe physical quantities with both magnitude and direction. In this chapter, we define displacement, velocity and acceleration as
vectors in ... | {"url":"http://theory.uwinnipeg.ca/physics/twodim/index.html","timestamp":"2014-04-20T05:53:03Z","content_type":null,"content_length":"3721","record_id":"<urn:uuid:45e4c13f-4abb-4509-a942-3cde0dbd0a7b>","cc-path":"CC-MAIN-2014-15/segments/1398223206672.15/warc/CC-MAIN-20140423032006-00031-ip-10-147-4-33.ec2.internal.wa... |
Half Moon Bay Algebra Tutor
...As an undergrad at Harvey Mudd, I helped design and teach a class on the software and hardware co-design of a GPS system, which was both a challenging and rewarding experience. I offer tutoring
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Squaring on both sides
December 6th 2013, 08:19 PM
Squaring on both sides
squaring on both sides
a^2 + b^2=34ab
But the answer is only 17+12(sqrt(2)). I know the extra root is because I squared on both sides.But how do we tell which is the right one?
December 6th 2013, 08:49 PM
Re: Squaring on both sides
... | {"url":"http://mathhelpforum.com/algebra/224880-squaring-both-sides-print.html","timestamp":"2014-04-19T02:45:02Z","content_type":null,"content_length":"5196","record_id":"<urn:uuid:7fd1e079-dfb9-4050-ab52-2777145068a4>","cc-path":"CC-MAIN-2014-15/segments/1398223201753.19/warc/CC-MAIN-20140423032001-00523-ip-10-147-4-... |
East Hills, NY Trigonometry Tutor
Find an East Hills, NY Trigonometry Tutor
...In the past, for example, I've drawn pictures, sung songs, broken down information into bullet points, acted it out, made flash cards, and so many more! Whatever works best for the student
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Wolfram Demonstrations Project
The Wire Problem
A standard optimization problem in first-semester calculus is to maximize and minimize the total area of two geometric figures made from a fixed length of wire cut into two pieces. This
Demonstration illustrates that problem using a wire of length 10 and three pairs of ge... | {"url":"http://demonstrations.wolfram.com/TheWireProblem/","timestamp":"2014-04-18T18:14:41Z","content_type":null,"content_length":"43275","record_id":"<urn:uuid:160079fc-4f2c-436e-be69-efc81e8a4b01>","cc-path":"CC-MAIN-2014-15/segments/1398223201753.19/warc/CC-MAIN-20140423032001-00445-ip-10-147-4-33.ec2.internal.warc... |
Elliptic equations of critical Sobolev growth have been the target of investigation for decades because they have proved to be of great importance in analysis, geometry, and physics. The equations
studied here are of the well-known Yamabe type. They involve Schrödinger operators on the left hand side and a critical non... | {"url":"http://press.princeton.edu/titles/7791.html","timestamp":"2014-04-17T18:26:54Z","content_type":null,"content_length":"15960","record_id":"<urn:uuid:42b157e9-a938-4c07-aa1d-99aeed52865f>","cc-path":"CC-MAIN-2014-15/segments/1397609530895.48/warc/CC-MAIN-20140416005210-00150-ip-10-147-4-33.ec2.internal.warc.gz"} |
Climatic Cycles and Tree-Growth/Chapter 7
From Wikisource
←Chapter VI Climatic Cycles and Tree-Growth by Chapter VIII→
Chapter VII
Need for such analysis.—During these modern times of rainfall and sunspot records we may compare such records with tree-growth and obtain the interesting correlations exhibite... | {"url":"http://en.wikisource.org/wiki/Climatic_Cycles_and_Tree-Growth/Chapter_7","timestamp":"2014-04-16T20:50:59Z","content_type":null,"content_length":"73207","record_id":"<urn:uuid:7b6b214a-d01c-4b9c-9cc9-93e2ec03ee0e>","cc-path":"CC-MAIN-2014-15/segments/1397609524644.38/warc/CC-MAIN-20140416005204-00234-ip-10-147-... |
L'Hopital's Rule...!
April 3rd 2008, 10:00 AM #1
Nov 2007
L'Hopital's Rule...!
Determine if L'Hopital's rule applies in each case. Select all that apply.
lim_y-->0 3^y/y^2
lim_x-->pi (sin(3x))/(x-pi)
lim_t-->0 (t^2+3t)/(cosh(t)-1)
lim_z-->0 (e^(2z)-1)/e^z
lim_theta-->0 (arctan(theta))/(3(the... | {"url":"http://mathhelpforum.com/calculus/33099-l-hopital-s-rule.html","timestamp":"2014-04-17T07:13:16Z","content_type":null,"content_length":"50802","record_id":"<urn:uuid:56c30cb2-54f4-438c-aed2-d5495b45eca1>","cc-path":"CC-MAIN-2014-15/segments/1398223203422.8/warc/CC-MAIN-20140423032003-00103-ip-10-147-4-33.ec2.in... |
FST (functions, stats, and trigonometry)
Number of results: 8,808
FST (functions, stats, and trigonometry)
the axis of symettry is x=0
Wednesday, October 7, 2009 at 9:05pm by bobpursley
FST (functions, stats, and trigonometry)
what is the equation for the axis of symmetry for the function f(x)=IxI?(absolute value)
Wedn... | {"url":"http://www.jiskha.com/search/index.cgi?query=FST+(functions%2C+stats%2C+and+trigonometry)","timestamp":"2014-04-18T04:19:09Z","content_type":null,"content_length":"38481","record_id":"<urn:uuid:b43afd8d-1636-4175-8238-8525daa0769f>","cc-path":"CC-MAIN-2014-15/segments/1397609532480.36/warc/CC-MAIN-2014041600521... |
Direction of gravitational acceleration vector
This question was asked in the context of Newtonian physics since this is not the special/general theory of relativity.
The answer is simpler in the context of general relativity, that's why I referred to it. When invoking the equivalence between accelerated observers and ... | {"url":"http://www.physicsforums.com/showthread.php?t=125867","timestamp":"2014-04-19T15:11:33Z","content_type":null,"content_length":"66675","record_id":"<urn:uuid:897b51aa-729c-4758-a647-fd095fbee7c9>","cc-path":"CC-MAIN-2014-15/segments/1397609537271.8/warc/CC-MAIN-20140416005217-00065-ip-10-147-4-33.ec2.internal.wa... |
Coppell Prealgebra Tutor
Find a Coppell Prealgebra Tutor
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Bibliographic References
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A. Marzal, E. Vidal, "Computation of Normalized Edit Distance and Applications," IEEE Transact... | {"url":"http://www.computer.org/csdl/trans/tp/1993/09/i0926-abs.html","timestamp":"2014-04-24T17:03:55Z","content_type":null,"content_length":"53460","record_id":"<urn:uuid:6b2aa447-6100-4f46-a870-857fd639093c>","cc-path":"CC-MAIN-2014-15/segments/1398223206647.11/warc/CC-MAIN-20140423032006-00170-ip-10-147-4-33.ec2.in... |
T-Mobile G1 teardown
In our Dev Phone 1 excitement last week, we somehow overlooked phoneWreck’s teardown of the T-Mobile G1. The complex slider mechanism is certainly worth looking out. One of the major oddities they
point out is the inclusion of two vibration motors. One is mounted next to the SIM on the mainboard. W... | {"url":"http://hackaday.com/2008/12/19/t-mobile-g1-teardown/","timestamp":"2014-04-17T01:47:19Z","content_type":null,"content_length":"80980","record_id":"<urn:uuid:54b04c26-3cb4-485d-852f-a653a428c3c3>","cc-path":"CC-MAIN-2014-15/segments/1397609537754.12/warc/CC-MAIN-20140416005217-00127-ip-10-147-4-33.ec2.internal.w... |
Belmont Hills, PA SAT Math Tutor
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RTI and Mathematics
October 20, 2011 10:00 AM - 11:00 AM • Chuck Gameon, David Allsopp
About this Talk
This Talk has now concluded.
Scroll below for questions and answers.
Please take a few moments at the completion of this event to give us your feed... | {"url":"http://www.rtinetwork.org/professional/rti-talks/transcript/talk/36","timestamp":"2014-04-19T22:05:23Z","content_type":null,"content_length":"80574","record_id":"<urn:uuid:7cd94bce-ffbf-4f99-814e-53a52c16d196>","cc-path":"CC-MAIN-2014-15/segments/1397609537754.12/warc/CC-MAIN-20140416005217-00361-ip-10-147-4-33... |
The Geometry Page
Geometry Page
Symmetry has always been attractive to mathematicians, and the most symmetric of all figures a... | {"url":"http://www.superliminal.com/geometry/ogeometry.htm","timestamp":"2014-04-18T11:00:25Z","content_type":null,"content_length":"15725","record_id":"<urn:uuid:0ab31d6c-76cd-4a83-9559-9ef44faf70b6>","cc-path":"CC-MAIN-2014-15/segments/1397609533308.11/warc/CC-MAIN-20140416005213-00534-ip-10-147-4-33.ec2.internal.war... |
Jump down to: Web Resources
Bibliography of useful books and articles that relate to the use of model-eliciting activities (MEAs)
Bransford, J., Brown, A.L., & Cocking, R.R. (Eds.) (2000). How people learn: Brain, mind, experience, and school. Washington, DC: National Academy Press.
Chamberlin, S. A., and Moon,... | {"url":"http://serc.carleton.edu/sp/cause/mea/references.html","timestamp":"2014-04-16T19:02:55Z","content_type":null,"content_length":"26929","record_id":"<urn:uuid:fd69735e-9886-4ad1-b12d-beeba2f929f8>","cc-path":"CC-MAIN-2014-15/segments/1397609524644.38/warc/CC-MAIN-20140416005204-00426-ip-10-147-4-33.ec2.internal.... |
Equation number
Is there any way to number the equations, even manually if automatic numbering is not supported?
QuickLaTeX supports equation numbering by native LaTeX rules: - Automatic numbering of displayed equations, e.g. $$...$$, etc. - Custom number for equation can be set using \tag - User can put label
for equa... | {"url":"http://wordpress.org/support/topic/plugin-wp-latex-equation-number","timestamp":"2014-04-17T05:43:47Z","content_type":null,"content_length":"16316","record_id":"<urn:uuid:27854473-0530-4599-a796-4c565350b6c9>","cc-path":"CC-MAIN-2014-15/segments/1397609526252.40/warc/CC-MAIN-20140416005206-00076-ip-10-147-4-33.... |
Mesa, AZ Math Tutor
Find a Mesa, AZ Math Tutor
...Is English a challenge? I shall be happy to tutor your child in the Language Arts as well. (I am not trained to teach English as a Second Language.)The materials I use will keep your child's
interest, and your child will learn. I shall take your child from the level... | {"url":"http://www.purplemath.com/Mesa_AZ_Math_tutors.php","timestamp":"2014-04-20T16:36:10Z","content_type":null,"content_length":"23490","record_id":"<urn:uuid:ce429d0b-43b1-4307-a69b-c5a66b990165>","cc-path":"CC-MAIN-2014-15/segments/1398223202548.14/warc/CC-MAIN-20140423032002-00089-ip-10-147-4-33.ec2.internal.warc... |
Coloured Graph Decompositions
Waterhouse, M A (2005). Coloured Graph Decompositions PhD Thesis, School of Physical Sciences, The University of Queensland.
Attached Files (Some files may be inaccessible until you login with your UQ eSpace credentials)
Name Description MIMEType ... | {"url":"http://espace.library.uq.edu.au/view/UQ:107288","timestamp":"2014-04-18T08:40:02Z","content_type":null,"content_length":"28068","record_id":"<urn:uuid:54de9d97-a1b2-4a4a-a607-628362eb794b>","cc-path":"CC-MAIN-2014-15/segments/1398223203841.5/warc/CC-MAIN-20140423032003-00446-ip-10-147-4-33.ec2.internal.warc.gz"... |
3. Student Learning Map
• Topic:Reasoning
• Subject(s):Math
• Days:7
• Grade(s):9, 10, 11, 12
Key Learning: Logic and reasoning are used in geometry and the real world to solve problems and reach conclusions.
Unit Essential Question(s):
Why are inductive and deductive reasoning not interchangeable?
Concept: I... | {"url":"http://publish.learningfocused.com/297366","timestamp":"2014-04-21T13:13:44Z","content_type":null,"content_length":"27530","record_id":"<urn:uuid:fa95a6d2-6465-486a-b0b3-2e284a33760b>","cc-path":"CC-MAIN-2014-15/segments/1398223202548.14/warc/CC-MAIN-20140423032002-00318-ip-10-147-4-33.ec2.internal.warc.gz"} |
Are the data consistent with the assumed process mean?
7. Product and Process Comparisons
7.2. Comparisons based on data from one process
7.2.2. Are the data consistent with the assumed process mean?
The testing of H[0] for a Given a random sample of measurements, Y[1], ..., Y[N], there are three types of questions ... | {"url":"http://www.itl.nist.gov/div898/handbook/prc/section2/prc22.htm","timestamp":"2014-04-20T13:20:07Z","content_type":null,"content_length":"9613","record_id":"<urn:uuid:d5011181-e8c1-431a-8ba4-b65789d367fe>","cc-path":"CC-MAIN-2014-15/segments/1397609538787.31/warc/CC-MAIN-20140416005218-00628-ip-10-147-4-33.ec2.i... |
Reply to comment
Submitted by Anonymous on October 17, 2012.
As pointed out in the comment above, the analysis of when to offer a double is not correct.
Assume that (1) you double when your probability of winning reaches d, (2) your opponent follows the same strategy, and (3) all doubles are accepted (which is the favo... | {"url":"http://plus.maths.org/content/comment/reply/2183/3721","timestamp":"2014-04-20T03:23:30Z","content_type":null,"content_length":"20861","record_id":"<urn:uuid:fbc442eb-5e14-4dbb-ae82-d109c952e9e8>","cc-path":"CC-MAIN-2014-15/segments/1397609537864.21/warc/CC-MAIN-20140416005217-00620-ip-10-147-4-33.ec2.internal.... |
A 4.80 Kg Counterweight Is Attached Toa Light Cord, ... | Chegg.com
A 4.80 kg counterweight is attached toa light cord, which is wound around a spool (refer to Fig. 10.20).The spool is a uniform solid cylinder of radius 6.00 cm and mass 1.10kg.
Figure 10.20
(a) What is the net torque on the system aboutthe point
(b) Wh... | {"url":"http://www.chegg.com/homework-help/questions-and-answers/480-kg-counterweight-attached-toa-light-cord-wound-around-spool-refer-fig-1020--spool-unif-q557474","timestamp":"2014-04-19T16:42:45Z","content_type":null,"content_length":"25176","record_id":"<urn:uuid:c86e0724-f041-4fae-8d6c-c9b53e311df7>","cc-path":"CC... |
I'm trying to find the inverse of a 50x50 dense matrix of rational numbers. The matrix is created using the method matrix_from_rows from another matrix that was created using matrix(QQ,B) from a list
of lists of rational numbers B. The error I get is the following:
/usr/.../sage-4.7.1/local/bin/sage-sage: line 301: 274... | {"url":"http://ask.sagemath.org/question/931/sage-crashes-when-inverting-a-large-matrix","timestamp":"2014-04-16T19:01:54Z","content_type":null,"content_length":"24104","record_id":"<urn:uuid:54170e51-8119-4b61-b4bb-70e469bbb637>","cc-path":"CC-MAIN-2014-15/segments/1397609524644.38/warc/CC-MAIN-20140416005204-00620-ip... |
50 Multiple Choice Questions on Quantitative Methods
1. 69857
50 Multiple Choice Questions on Quantitative Methods
Question 1
In a balanced transportation model where supply equals demand,
a. all constraints are equalities
b. none of the constraints are equalities
c. all constraints are inequalities
d. none of th... | {"url":"https://brainmass.com/business/business-management/69857","timestamp":"2014-04-16T18:56:35Z","content_type":null,"content_length":"37415","record_id":"<urn:uuid:4fb517ba-54d6-40c8-b47c-7785a9b30f92>","cc-path":"CC-MAIN-2014-15/segments/1397609524644.38/warc/CC-MAIN-20140416005204-00043-ip-10-147-4-33.ec2.intern... |
Numerical solution of the Fokker-Planck-Landau equation by fast spectral methods
Nowadays, numerical simulations of plasmas are receiving a great deal of attention both in research and in industry thanks to the numerous applications directly connected to these phenomena. In
addition, there exist many practical situatio... | {"url":"http://www.lorenzopareschi.com/2005/01/numerical-solution-of-fokker-planck.html","timestamp":"2014-04-16T10:09:51Z","content_type":null,"content_length":"72426","record_id":"<urn:uuid:25a9dc36-c8e7-4972-8eea-fe22b11decc7>","cc-path":"CC-MAIN-2014-15/segments/1397609523265.25/warc/CC-MAIN-20140416005203-00188-ip... |
Arthur Miller
Einstein and Schrödinger never fully accepted the highly abstract nature of Heisenberg's quantum mechanics, says Miller. They agreed with Galileo's assertion that "the book of nature is written
in mathematics", but they also realized the power of using visual imagery to represent mathematical sym... | {"url":"http://www.eskesthai.com/search/label/E8","timestamp":"2014-04-20T15:56:53Z","content_type":null,"content_length":"321093","record_id":"<urn:uuid:2658d493-1017-4997-ae5c-309799932cd3>","cc-path":"CC-MAIN-2014-15/segments/1397609538824.34/warc/CC-MAIN-20140416005218-00608-ip-10-147-4-33.ec2.internal.warc.gz"} |
Ductwork surface area calculation problem
April 25th 2012, 06:32 AM #1
Apr 2012
Ductwork surface area calculation problem
I have a major in economics and I am creating an excel spreadsheet for quotations of sheet metal ductwork as my final thesis. I need to calculate weights for various types of ductwork produc... | {"url":"http://mathhelpforum.com/geometry/197890-ductwork-surface-area-calculation-problem.html","timestamp":"2014-04-18T09:23:47Z","content_type":null,"content_length":"45785","record_id":"<urn:uuid:9aee7f4f-2144-4f39-9f0c-99c5d90eb1b5>","cc-path":"CC-MAIN-2014-15/segments/1397609533121.28/warc/CC-MAIN-20140416005213-... |
Specht module
Specht module
Specht modules are some very nice $ℤ\left[{S}_{n}\right]$modules which are irreducible? after base change to $ℚ$. Over a field of characteristic $p$, where $p\mid n!$, the base changes are not
irreducible, but every irreducible module appears as the cosocle? of a Specht module.
Revised on Oc... | {"url":"http://ncatlab.org/nlab/show/Specht+module","timestamp":"2014-04-18T13:15:21Z","content_type":null,"content_length":"11874","record_id":"<urn:uuid:b3282eac-95f1-48a9-9eb1-74f87fcc4498>","cc-path":"CC-MAIN-2014-15/segments/1397609533689.29/warc/CC-MAIN-20140416005213-00513-ip-10-147-4-33.ec2.internal.warc.gz"} |
Finding an eigenvector
February 1st 2013, 01:09 PM
Finding an eigenvector
I'm trying to find an eigenvector of a matrix. I have λ = 1, so my matrix (A - λI) is
$[-0.5253, 0.8593, -0.1906; -0.8612, -0.5018, 0.1010; 0.1817, 0.1161, -0.0236]$
And from rows 2 and 3 I get these simultaneous equations
I elimi... | {"url":"http://mathhelpforum.com/algebra/212412-finding-eigenvector-print.html","timestamp":"2014-04-17T22:28:48Z","content_type":null,"content_length":"7403","record_id":"<urn:uuid:80284f74-57a5-42c7-8428-84e7fec01707>","cc-path":"CC-MAIN-2014-15/segments/1397609532128.44/warc/CC-MAIN-20140416005212-00437-ip-10-147-4-... |
D. J. Bernstein
Fast arithmetic
I have speed reports for djbfft 0.76 on In each case the compiler options are the default options in the djbfft installation: -O1 -fomit-frame-pointer with -malign-double added automatically on the
x86 processors.
I also have some speed reports for djbfft 0.75 under alternate compilers:
... | {"url":"http://cr.yp.to/djbfft/speed.html","timestamp":"2014-04-17T01:36:32Z","content_type":null,"content_length":"4734","record_id":"<urn:uuid:40202c21-50ef-462e-8331-1f01b4905dae>","cc-path":"CC-MAIN-2014-15/segments/1397609526102.3/warc/CC-MAIN-20140416005206-00638-ip-10-147-4-33.ec2.internal.warc.gz"} |
Morphisms of Frobenius manifolds: Definitions and examples?
up vote 4 down vote favorite
Frobenius manifolds arise in the study of quantum cohomology and mirror symmetry -- roughly they are manifolds (or varieties or whatever) such that the tangent spaces are Frobenius algebras (there
are more conditions to be satisfie... | {"url":"http://mathoverflow.net/questions/38204/morphisms-of-frobenius-manifolds-definitions-and-examples?sort=oldest","timestamp":"2014-04-21T15:15:29Z","content_type":null,"content_length":"51052","record_id":"<urn:uuid:87a3d7a1-b372-4ca1-9ca5-0bdc9a3c2c40>","cc-path":"CC-MAIN-2014-15/segments/1398223201753.19/warc/C... |
SOC S554 3707 Statistical Techniques in Sociology 1
Sociology | Statistical Techniques in Sociology 1
S554 | 3707 | Patricia McManus
This is the first semester of the two-course sequence in social
statistics required of graduate students in Sociology. The course
takes a systematic approach to the exposition of the gene... | {"url":"http://www.indiana.edu/~deanfac/blspr01/soc/soc_s554_3707.html","timestamp":"2014-04-19T09:32:17Z","content_type":null,"content_length":"2676","record_id":"<urn:uuid:b11a29f2-0df1-4d6f-be76-cadb8aa667b6>","cc-path":"CC-MAIN-2014-15/segments/1397609537097.26/warc/CC-MAIN-20140416005217-00513-ip-10-147-4-33.ec2.i... |
Virtual Network Embedding: A Hybrid Vertex Mapping Solution for Dynamic Resource Allocation
Journal of Electrical and Computer Engineering
Volume 2012 (2012), Article ID 358647, 17 pages
Research Article
Virtual Network Embedding: A Hybrid Vertex Mapping Solution for Dynamic Resource Allocation
School of ICT, KTH Royal... | {"url":"http://www.hindawi.com/journals/jece/2012/358647/","timestamp":"2014-04-17T17:39:23Z","content_type":null,"content_length":"202481","record_id":"<urn:uuid:dd833519-77dc-48e0-9e1a-2524e82b2099>","cc-path":"CC-MAIN-2014-15/segments/1397609530136.5/warc/CC-MAIN-20140416005210-00403-ip-10-147-4-33.ec2.internal.warc... |
Horner's Method
October 6th 2008, 05:26 PM
Horner's Method
I'm attempting to evaluate 3x^2 + x + 1 at x = 2. Also, how many multiplications are used by this algorithm to evaluate a polynomial of degree n at x = c?
procedure Horner(c, a0, a1, a2, ... , an : real numbers)
y:= an
for i := 1 to n
y := y... | {"url":"http://mathhelpforum.com/discrete-math/52327-horners-method-print.html","timestamp":"2014-04-16T17:14:14Z","content_type":null,"content_length":"6089","record_id":"<urn:uuid:e037eda1-7059-4ab4-a706-9cf1c4a898ed>","cc-path":"CC-MAIN-2014-15/segments/1397609524259.30/warc/CC-MAIN-20140416005204-00276-ip-10-147-4-... |
Bible Story Activities - Weights
Use the following Bible story activities to teach the children in your Sunday School class about the units of weight mentioned in the story you are studying. For more information on weights in
biblical times, go to Weights in Biblical Times
A Ring and Bracelets for Rebekah. Genesis 24:2... | {"url":"http://www.sundayschoolresources.com/biblestoryactivities2.htm","timestamp":"2014-04-16T16:02:04Z","content_type":null,"content_length":"21402","record_id":"<urn:uuid:4fca6fbb-a516-40a0-97d9-3cccf8ab8713>","cc-path":"CC-MAIN-2014-15/segments/1397609524259.30/warc/CC-MAIN-20140416005204-00324-ip-10-147-4-33.ec2.... |
wave equation
January 26th 2009, 06:10 AM #1
Jan 2009
wave equation
:=1/2(Tyxx+ ½ytt ) and P := Tyxyt.
Show that
Et = Px and TEx = ½Pt
and deduce that
E and P are also solutions of the wave equation, i.e.
xx = ½Ett and TPxx = ½Ptt.
What are the physical interpretations of... | {"url":"http://mathhelpforum.com/advanced-applied-math/69964-wave-equation.html","timestamp":"2014-04-20T04:55:14Z","content_type":null,"content_length":"41724","record_id":"<urn:uuid:ab483025-da70-4b48-9e3d-cb05e43400ff>","cc-path":"CC-MAIN-2014-15/segments/1397609537864.21/warc/CC-MAIN-20140416005217-00427-ip-10-147-... |
A senior scholar reports on S. Fortier's presentation at the CMS meeting
A senior scholar reports on S. Fortier’s presentation at the CMS meeting
First there was the open letter to the industry minister by 327 mathematical scientists, including 27 Canada Research Chairs and 35 fellows of the Royal Society of Canada. Th... | {"url":"http://nghoussoub.com/2011/06/18/a-senior-scholar-reports-on-s-fortiers-presentation-at-the-cms-meeting/","timestamp":"2014-04-17T06:48:19Z","content_type":null,"content_length":"68378","record_id":"<urn:uuid:076e3ed3-ef7c-4afb-8421-a78928a78ebd>","cc-path":"CC-MAIN-2014-15/segments/1397609526311.33/warc/CC-MAI... |
ROBERT F. O'CONNELL
PUBLICATIONS (with PDF’s)
1. W. R. Johnson, R. F. O'Connell, C. J. Mullin, "Coulomb Field Effects on the Decay of Bound Polarized Muons," Phys. Rev. 124, 904 (1961).
2. R. F. O'Connell and L. O'Raifeartaigh, "On a... | {"url":"http://www.phys.lsu.edu/faculty/oconnell/oconnell_pubs.html","timestamp":"2014-04-21T14:39:57Z","content_type":null,"content_length":"190356","record_id":"<urn:uuid:c3d9ffa5-2adb-4f7d-82cb-6d682857704d>","cc-path":"CC-MAIN-2014-15/segments/1398223206120.9/warc/CC-MAIN-20140423032006-00611-ip-10-147-4-33.ec2.int... |
Tenafly SAT Math Tutor
Find a Tenafly SAT Math Tutor
...And I've completed two years of medical school before switching my focus to research and education. Over the past two years, I've been teaching Physics, Chemistry, Biology, Organic Chemistry,
and Calculus at the College Level and preparing students for their M... | {"url":"http://www.purplemath.com/tenafly_sat_math_tutors.php","timestamp":"2014-04-16T19:04:12Z","content_type":null,"content_length":"23691","record_id":"<urn:uuid:2d065cb6-b7be-48f1-ab9b-46260d7b8a94>","cc-path":"CC-MAIN-2014-15/segments/1397609524644.38/warc/CC-MAIN-20140416005204-00461-ip-10-147-4-33.ec2.internal.... |
Nikolai Dmetrievich Brashman
Born: 14 June 1796 in Rassnova: near Brünn, Austria-Hungary (now Brno, Czech Republic)
Died: 13 May 1866 in Moscow, Russia
... | {"url":"http://www-history.mcs.st-andrews.ac.uk/Biographies/Brashman.html","timestamp":"2014-04-17T12:42:36Z","content_type":null,"content_length":"21585","record_id":"<urn:uuid:be99224e-c769-4abd-baa3-832389096ab3>","cc-path":"CC-MAIN-2014-15/segments/1397609530131.27/warc/CC-MAIN-20140416005210-00072-ip-10-147-4-33.e... |
Discrete Math - Vectors
Posted by Anonymous on Sunday, February 10, 2008 at 1:32am.
Can you please help me correct my answers for the following two questions?
1) A tour boat travels 25 km due east and then 15 km S50°E. Represent these displacements in a vector diagram, then calculate the resultant displacement.
My Work... | {"url":"http://www.jiskha.com/display.cgi?id=1202625125","timestamp":"2014-04-20T12:21:01Z","content_type":null,"content_length":"10987","record_id":"<urn:uuid:46e932a3-03d4-4f1a-a9b6-af931316a7c9>","cc-path":"CC-MAIN-2014-15/segments/1397609538423.10/warc/CC-MAIN-20140416005218-00014-ip-10-147-4-33.ec2.internal.warc.g... |
Zero-knowledge proof that 0 = 1
up vote 5 down vote favorite
Suppose one day I came up with a proof that 0 = 1 in some formal system such as PA or ZFC that cannot prove its own consistency (unless it is inconsistent). Would it be possible to have a
zero-knowledge proof of this? In other words, would it be possible for ... | {"url":"http://mathoverflow.net/questions/48880/zero-knowledge-proof-that-0-1","timestamp":"2014-04-18T00:42:25Z","content_type":null,"content_length":"83213","record_id":"<urn:uuid:018d5e32-6787-46e4-80ef-88261610d36b>","cc-path":"CC-MAIN-2014-15/segments/1397609532374.24/warc/CC-MAIN-20140416005212-00617-ip-10-147-4-... |
One of the most difficult problems of computer graphics today is producing truly robust algorithms. Working in floating point coordinate system introduces a lot of subtle problems. Computational
geometry approaches the problem from two directions:
1) Implementing algorithms on top of rational numbers.
2) Introducing ro... | {"url":"http://zrusin.blogspot.com/2006/05/precision.html","timestamp":"2014-04-17T03:48:33Z","content_type":null,"content_length":"89175","record_id":"<urn:uuid:64fe79a0-88f7-4bdc-b557-60cb425eb8d3>","cc-path":"CC-MAIN-2014-15/segments/1398223203422.8/warc/CC-MAIN-20140423032003-00112-ip-10-147-4-33.ec2.internal.warc.... |
Equation of plan
June 24th 2008, 05:20 PM #1
Super Member
Jun 2008
Equation of plan
Finding the equation of the plan that passes the straight r: $\frac{(x-1)}{3}=\frac{(y-3)}{2}=\frac{(z+2)}{-1}$ and is parallel to the straight s:
How do I find the vector of directional
straight (s)?
June 25th 2008, 07:... | {"url":"http://mathhelpforum.com/calculus/42345-equation-plan.html","timestamp":"2014-04-20T19:10:14Z","content_type":null,"content_length":"30247","record_id":"<urn:uuid:0372a3b1-b50d-4511-8c8a-12a0f13eab1b>","cc-path":"CC-MAIN-2014-15/segments/1397609539066.13/warc/CC-MAIN-20140416005219-00102-ip-10-147-4-33.ec2.inte... |
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=14396&page=66","timestamp":"2014-04-21T03:05:08Z","content_type":null,"content_length":"54454","record_id":"<urn:uuid:2bba266c-0245-4cb2-989f-e65cdab40e7f>","cc-path":"CC-MAIN-2014-15/segments/1397609539447.23/warc/CC-MAIN-20140416005219-00169-ip-10-147-4-33.ec2.interna... |