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October 18th 2008, 02:42 AM #1
Oct 2008
Let S be the set of all functions from {1, 2} to {1, 2, 3}. Let F be an element of S chosen at random.
Find |S| and find the probability that F is an injective function.
For the question I know the |S|= 9 but finding it difficult to find the probability that f... | {"url":"http://mathhelpforum.com/advanced-statistics/54305-solved-sets-functions.html","timestamp":"2014-04-23T21:21:25Z","content_type":null,"content_length":"52276","record_id":"<urn:uuid:d5fb3f9e-e43a-4b33-a1f1-bcfae50f2c89>","cc-path":"CC-MAIN-2014-15/segments/1398223203422.8/warc/CC-MAIN-20140423032003-00508-ip-10... |
quick question on the conservation of angular momentum
The classic example is the figure skater doing twirls. When one pulls one's limbs in, it decreases the moment of inertia, so the angular velocity increases. The angular momentum stays the same.
So far, so good.
At a microscopic level, I suppose you could picture th... | {"url":"http://www.physicsforums.com/showthread.php?p=4183387","timestamp":"2014-04-17T21:39:56Z","content_type":null,"content_length":"70359","record_id":"<urn:uuid:d79c80cd-3eba-4fb0-a0b1-a0492e8eb54f>","cc-path":"CC-MAIN-2014-15/segments/1397609532128.44/warc/CC-MAIN-20140416005212-00154-ip-10-147-4-33.ec2.internal.... |
Matrix Algebra
Date: 08/28/97 at 21:34:35
From: Corinne Offerman
Subject: Matrices, algebra
B = ( ) C = ( -1 -3 )
1 -1 -2 5 -6
Find BC from this matrix.
I am not sure which formula of matrices to use in this situation.
Can you please help me? Thank you.
Date: 08/29/97 at 12:38:42
F... | {"url":"http://mathforum.org/library/drmath/view/51647.html","timestamp":"2014-04-17T15:57:52Z","content_type":null,"content_length":"8164","record_id":"<urn:uuid:1b20aa60-ce47-463d-99c1-b45a1e3f4e9c>","cc-path":"CC-MAIN-2014-15/segments/1397609530136.5/warc/CC-MAIN-20140416005210-00026-ip-10-147-4-33.ec2.internal.warc... |
The subset function is available in base R and can be used to return subsets of a vector, martix, or data frame which meet a particular condition. In my three years of using R, I have repeatedly used
the subset() function and believe that it is the most useful tool for selecting elements of a
More fun with boxplots
Her... | {"url":"http://www.r-bloggers.com/tag/subset/","timestamp":"2014-04-16T22:20:15Z","content_type":null,"content_length":"27647","record_id":"<urn:uuid:b7d589eb-a03c-4832-ab2c-ed4a88b29aa1>","cc-path":"CC-MAIN-2014-15/segments/1398223207985.17/warc/CC-MAIN-20140423032007-00536-ip-10-147-4-33.ec2.internal.warc.gz"} |
adding vectors
November 10th 2010, 07:47 AM
adding vectors
Calculate the resultant vectors for the following. Solve using scale when appropriate.
5a + (-2a) if a is 22 kilometres north?
5x 22 +(-2x22) = 110 - 44 ??
how do I represent them?
November 10th 2010, 07:53 AM
a is 22 km north means it can b... | {"url":"http://mathhelpforum.com/trigonometry/162764-adding-vectors-print.html","timestamp":"2014-04-18T00:48:00Z","content_type":null,"content_length":"4642","record_id":"<urn:uuid:c9403163-b03b-4334-a2bc-bfcc2f3f5bbc>","cc-path":"CC-MAIN-2014-15/segments/1397609532374.24/warc/CC-MAIN-20140416005212-00387-ip-10-147-4-... |
Google Answers: Relative strength of square steel tubing in different orientations
Hello kann, you are correct in your thinking. The section modulus,
which is used to calculate bending strength, does depend on
orientation in the case of a square shape. Whether the section is a
piece of square tubing or a solid square b... | {"url":"http://answers.google.com/answers/threadview/id/523190.html","timestamp":"2014-04-21T14:57:00Z","content_type":null,"content_length":"9558","record_id":"<urn:uuid:67e1e99d-f914-4c1c-a9e9-fadb9b725dc0>","cc-path":"CC-MAIN-2014-15/segments/1398223211700.16/warc/CC-MAIN-20140423032011-00176-ip-10-147-4-33.ec2.inte... |
opengl z-buffer alpha sorting
Actually, this isn't necessarily true. Imagine two triangles, one red and one green, in front of the camera with their vertices at the exact same positions. Now imagine one of them is rotated
slightly along the vertical axis, and the other is rotated by the same amount in the opposite dire... | {"url":"http://www.cplusplus.com/forum/lounge/89544/","timestamp":"2014-04-19T20:08:05Z","content_type":null,"content_length":"29447","record_id":"<urn:uuid:6e5eb082-9e3f-46ce-a3a8-4737be7ef688>","cc-path":"CC-MAIN-2014-15/segments/1397609537376.43/warc/CC-MAIN-20140416005217-00101-ip-10-147-4-33.ec2.internal.warc.gz"} |
Reference class problem
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Assessment | Biopsychology | Comparative | Cognitive | Developmental | Language | Individual differences | Personality | Philosophy | Social |
Methods | Statistics | Clinical | Educational | Industrial | Professional items | World psychology |
Statistics: Scientific meth... | {"url":"http://psychology.wikia.com/wiki/Reference_class_problem","timestamp":"2014-04-23T17:47:56Z","content_type":null,"content_length":"62055","record_id":"<urn:uuid:c77a0031-2490-4b99-b3e3-d5a4018c002b>","cc-path":"CC-MAIN-2014-15/segments/1398223203235.2/warc/CC-MAIN-20140423032003-00196-ip-10-147-4-33.ec2.interna... |
Analyze IMD-Causing Frequency Components
Amplifiers based on MOSFET devices can suffer nonlinearities traceable to harmonic signal components. To better understand this phenomenon, an analysis was performed, based on polynomial substations,
to identify the signal components that can affect the nonlinear performance of ... | {"url":"http://mwrf.com/print/components/analyze-imd-causing-frequency-components","timestamp":"2014-04-17T12:32:24Z","content_type":null,"content_length":"31165","record_id":"<urn:uuid:b51a1424-739d-4ff7-a562-40daa500a7eb>","cc-path":"CC-MAIN-2014-15/segments/1397609530131.27/warc/CC-MAIN-20140416005210-00486-ip-10-14... |
Journal of the South African Institution of Civil Engineering
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Print version ISSN 1021-2019
J. S. Afr. Inst. Civ. Eng. vol.52 no.1 Midrand Apr. 2010
Infilling annual rainfall data using feedforward back-propagation Artificial Neural Networks (ANN): application of the standard and gener... | {"url":"http://www.scielo.org.za/scielo.php?script=sci_arttext&pid=S1021-20192010000100001&lng=en&nrm=iso&tlng=en","timestamp":"2014-04-19T09:31:30Z","content_type":null,"content_length":"68415","record_id":"<urn:uuid:eda68e64-9f7c-453a-8ee0-3d4fbf0f9c66>","cc-path":"CC-MAIN-2014-15/segments/1397609537097.26/warc/CC-MA... |
[SciPy-User] synchronizing timestamps from different systems; unpaired linear regression
josef.pktd@gmai... josef.pktd@gmai...
Tue Apr 10 09:13:52 CDT 2012
On Tue, Apr 10, 2012 at 5:27 AM, Chris Rodgers <xrodgers@gmail.com> wrote:
> I have what seems like a straightforward problem but it is becoming
> more difficult th... | {"url":"http://mail.scipy.org/pipermail/scipy-user/2012-April/032036.html","timestamp":"2014-04-18T21:04:53Z","content_type":null,"content_length":"6569","record_id":"<urn:uuid:95aa9b51-05f7-445b-856e-568d67ff945f>","cc-path":"CC-MAIN-2014-15/segments/1397609535095.9/warc/CC-MAIN-20140416005215-00558-ip-10-147-4-33.ec2... |
Re: st: statsby slowness
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Re: st: statsby slowness
From Roger Harbord <rogerharbord@bigfoot.com>
To statalist@hsphsun2.harvard.edu
Subject Re: st: statsby slowness
Date Tue, 14 Aug 2007 10:14:44 +0100
I've had similar experiences - bas... | {"url":"http://www.stata.com/statalist/archive/2007-08/msg00470.html","timestamp":"2014-04-16T19:02:34Z","content_type":null,"content_length":"7111","record_id":"<urn:uuid:a852a4ca-1afb-4dbd-8dc2-cb314b5d3199>","cc-path":"CC-MAIN-2014-15/segments/1397609524644.38/warc/CC-MAIN-20140416005204-00078-ip-10-147-4-33.ec2.int... |
Problem 160. So many choices
For inputs n and k (in that order), output the number of ways that k objects can be chosen from amongst n distinct objects. [The order of the selected objects is irrelevant.]
For example, suppose you have 4 blocks: red, green, blue, yellow. How many ways are there to select 2 of them? There... | {"url":"http://www.mathworks.com/matlabcentral/cody/problems/160-so-many-choices","timestamp":"2014-04-25T05:34:53Z","content_type":null,"content_length":"50673","record_id":"<urn:uuid:6e535fa7-53c3-4bd4-b82b-d391ddaaaa33>","cc-path":"CC-MAIN-2014-15/segments/1398223210034.18/warc/CC-MAIN-20140423032010-00549-ip-10-147... |
Calculus AB Lesson 05: Exponential and Logarithmic Functions : Monterey Institute for Technology and Education : Free Download & Streaming : Internet Archive
Monterey Institute for Technology and Education
There is currently no description for this item.
This educational material is part of the collection: Advanced Pla... | {"url":"https://archive.org/details/AP_Calculus_AB_Lesson_05","timestamp":"2014-04-24T18:28:54Z","content_type":null,"content_length":"18999","record_id":"<urn:uuid:c535f28f-7556-4b78-8af6-7548f8c2a180>","cc-path":"CC-MAIN-2014-15/segments/1398223206647.11/warc/CC-MAIN-20140423032006-00063-ip-10-147-4-33.ec2.internal.w... |
Two people push on a desk they are trying to move. One person pushes with 35 N at a 50^o angle, while the other person pushes with 27 N at a 340^o angle. What is the resultant push on the desk?
Given: push one, []
Unknown: resultant push, []
Physical (Mathematical) Principles and Ideas: rules for adding vectors, t... | {"url":"http://users.ipfw.edu/maloney/ex3.html","timestamp":"2014-04-17T21:55:53Z","content_type":null,"content_length":"54963","record_id":"<urn:uuid:e7ad0620-fd8b-4882-b4f1-2025e6d56c7f>","cc-path":"CC-MAIN-2014-15/segments/1397609532128.44/warc/CC-MAIN-20140416005212-00309-ip-10-147-4-33.ec2.internal.warc.gz"} |
Next: LONG SHORT-TERM MEMORY Up: LSTM CAN SOLVE HARD Previous: LSTM CAN SOLVE HARD
Traditional recurrent nets fail in case of long minimal time lags between input signals and corresponding error signals [7,3]. Many recent papers propose alternative methods, e.g., [16,12,1,6,9]. For
instance, Bengio et al. investigate m... | {"url":"http://www.idsia.ch/~juergen/nipslstm/node1.html","timestamp":"2014-04-16T13:04:39Z","content_type":null,"content_length":"12923","record_id":"<urn:uuid:a76099a4-fbf8-4d9a-bebb-49200681a82c>","cc-path":"CC-MAIN-2014-15/segments/1397609523429.20/warc/CC-MAIN-20140416005203-00114-ip-10-147-4-33.ec2.internal.warc.... |
Congruent Triangles
Product Information
Congruent Triangles
Shape and Space PowerPoint Presentation
This is very good presentation on congruent triangles. It starts off by reminding students about congruent shapes generally. A short historical note discusses the four congruent theorems proven by
Euclid in book I of his... | {"url":"http://www.whiteboardmaths.com/product_57.html","timestamp":"2014-04-16T15:59:13Z","content_type":null,"content_length":"12625","record_id":"<urn:uuid:8fb57b8d-a1ab-40d4-b1b4-447fb965c3bf>","cc-path":"CC-MAIN-2014-15/segments/1398223206770.7/warc/CC-MAIN-20140423032006-00353-ip-10-147-4-33.ec2.internal.warc.gz"... |
RIEMANNIAN GEOMETRY, FIBER BUNDLES, KALUZA-KLEIN THEORIES AND ALL THAT.....
A. Jadczyk,
Print-82-0210 (GOTTINGEN), (Received Mar 1982). 26pp.
Published in Ann.Poincare 28:99-111,1983.
R. Coquereaux, A. Jadczyk,
CERN-TH-3483, Dec 1982. 31pp.
Published in Commun.Math.Phys. 90:79-100,1983.
A. J... | {"url":"http://arkadiusz-jadczyk.org/papers/kk.htm","timestamp":"2014-04-19T09:33:38Z","content_type":null,"content_length":"7351","record_id":"<urn:uuid:51fafaaa-c5e7-4672-9276-d88ae93868c2>","cc-path":"CC-MAIN-2014-15/segments/1398223203235.2/warc/CC-MAIN-20140423032003-00058-ip-10-147-4-33.ec2.internal.warc.gz"} |
Random-walk computation of similarities between nodes of a graph, with application to collaborative recommendation
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"... Consistency is a key property of statistical algorithms, when the data is drawn from some underlying probability distribution. Surprisingly, despite decades of work, littl... | {"url":"http://citeseerx.ist.psu.edu/showciting?doi=10.1.1.72.5404","timestamp":"2014-04-18T19:46:32Z","content_type":null,"content_length":"41474","record_id":"<urn:uuid:154978eb-7bc1-48a2-8c43-c0940bbc7915>","cc-path":"CC-MAIN-2014-15/segments/1397609535095.7/warc/CC-MAIN-20140416005215-00516-ip-10-147-4-33.ec2.inter... |
Integral Octonions (Part 5)
Posted by John Baez
I’m back from China. I saw lots of cool stuff:
(Click for more information.)
But I also had lots of time sitting in trains, buses and automobiles to think about the $\mathrm{E}_8$ root polytope. Calculations along these lines turn out to be a great antidote to boredom!
So... | {"url":"http://golem.ph.utexas.edu/category/2013/09/integral_octonions_part_5_1.html","timestamp":"2014-04-20T06:18:11Z","content_type":null,"content_length":"203085","record_id":"<urn:uuid:a148f481-a114-4696-866c-72f960fb263c>","cc-path":"CC-MAIN-2014-15/segments/1397609538022.19/warc/CC-MAIN-20140416005218-00326-ip-1... |
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Topic: unstable solution of a nonlinear system with linear constraints
Replies: 4 Last Post: Nov 28, 2013 10:5... | {"url":"http://mathforum.org/kb/thread.jspa?threadID=2415260","timestamp":"2014-04-17T16:18:56Z","content_type":null,"content_length":"20932","record_id":"<urn:uuid:e15ea6b2-d1a6-4af5-b768-4bbb890e9454>","cc-path":"CC-MAIN-2014-15/segments/1397609530136.5/warc/CC-MAIN-20140416005210-00270-ip-10-147-4-33.ec2.internal.wa... |
Patent US20020152054 - Peak time detecting apparatus and method
[0001] 1. Field of the Invention
[0002] The present invention relates to a peak time detecting apparatus and a peak time detecting method and, more particularly, to a peak time detecting apparatus that detects a peak time of
time-series signals by using th... | {"url":"http://www.google.com/patents/US20020152054?ie=ISO-8859-1","timestamp":"2014-04-21T03:34:53Z","content_type":null,"content_length":"102207","record_id":"<urn:uuid:a651b3f3-2bb7-4d3d-a72a-0e2c49f15398>","cc-path":"CC-MAIN-2014-15/segments/1397609539447.23/warc/CC-MAIN-20140416005219-00334-ip-10-147-4-33.ec2.inte... |
An introduction to Markov chain analysis
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Front Cover
AN INTRODUCTION TO MARKOV CHAIN ANALYSIS 3
iii The limiting matrix 9
3 other sections not shown
Common terms and phrases
absor... | {"url":"http://books.google.com/books?id=rBENAQAAMAAJ&dq=related:UOM39015015629655","timestamp":"2014-04-18T23:21:14Z","content_type":null,"content_length":"103280","record_id":"<urn:uuid:2142c424-6638-4e77-9f4f-4f5f94229a3b>","cc-path":"CC-MAIN-2014-15/segments/1397609535535.6/warc/CC-MAIN-20140416005215-00604-ip-10-1... |
Cocomplete but not complete abelian category
up vote 27 down vote favorite
This is a duplicate of the following question to which I did not receive any answer: http://math.stackexchange.com/questions/238247/complete-but-not-cocomplete-category
Let $\mathfrak C$ be an abelian, cocomplete category. If $\mathfrak C$ has a... | {"url":"http://mathoverflow.net/questions/112574/cocomplete-but-not-complete-abelian-category?sort=newest","timestamp":"2014-04-16T04:44:41Z","content_type":null,"content_length":"106000","record_id":"<urn:uuid:b31fb234-4379-438b-9cea-fbdaed5e54ec>","cc-path":"CC-MAIN-2014-15/segments/1397609521512.15/warc/CC-MAIN-2014... |
Questions in need of checking.
December 20th 2007, 07:33 AM #1
Dec 2007
Questions in need of checking.
I was given a few problems to do for my pre-calc class, and I solved pretty much everything on my own. All I need is for someone to check the answers to make sure they're correct. Anyone willing?
1. f(x) =... | {"url":"http://mathhelpforum.com/pre-calculus/25137-questions-need-checking.html","timestamp":"2014-04-16T14:42:11Z","content_type":null,"content_length":"45083","record_id":"<urn:uuid:4a67b5e7-7061-4aaf-8a48-46472bfe662c>","cc-path":"CC-MAIN-2014-15/segments/1397609523429.20/warc/CC-MAIN-20140416005203-00633-ip-10-147... |
Tips for analyzing a combination circuit
One tries to simply the resistances into equivalent resistances.
Parallel components share the same voltage (potential) since they share common nodes, but series resistances have the same current, and the voltage drop would be the same only if the resistances are
the same.
A bat... | {"url":"http://www.physicsforums.com/showthread.php?t=297875","timestamp":"2014-04-19T22:59:14Z","content_type":null,"content_length":"25871","record_id":"<urn:uuid:5a22bbae-d5de-4544-9e9c-5221595a1fc0>","cc-path":"CC-MAIN-2014-15/segments/1397609537754.12/warc/CC-MAIN-20140416005217-00650-ip-10-147-4-33.ec2.internal.w... |
Bunker Hill Village, TX Algebra 2 Tutor
Find a Bunker Hill Village, TX Algebra 2 Tutor
...Primarily I love to practice my violin. I have been playing since I was two years old. My parents put a stick in one hand and a cardboard box in the other till I could handle the real thing.
38 Subjects: including algebra 2,... | {"url":"http://www.purplemath.com/Bunker_Hill_Village_TX_algebra_2_tutors.php","timestamp":"2014-04-19T12:46:48Z","content_type":null,"content_length":"24730","record_id":"<urn:uuid:4e6ab586-8d38-4726-9a79-8d4e49eaadfe>","cc-path":"CC-MAIN-2014-15/segments/1397609537186.46/warc/CC-MAIN-20140416005217-00087-ip-10-147-4-... |
quivalent of
My spreadsheet needs VBA code edit, to send EMAILS to rows, that are NOT BLANK in the worksheet RESULTS, excluding the HEADER.
See sample file http://www.srands.co.uk/exoftable3.xls
Issue1: To get VBA code working edited (See code below, 9th line, For r = 2 To 2 'Needs editing so that data in 'not blank' ... | {"url":"http://www.knowexcel.com/view/1426730-equivalent-of-vba-mod-fn-for-non-integer-arguments.html","timestamp":"2014-04-20T18:23:40Z","content_type":null,"content_length":"63350","record_id":"<urn:uuid:1717bf57-9dfd-4745-93a4-5e9db12c6fa9>","cc-path":"CC-MAIN-2014-15/segments/1398223207985.17/warc/CC-MAIN-201404230... |
Snohomish Geometry Tutor
Find a Snohomish Geometry Tutor
...If you don't understand something, such as a math problem, I can simplify it until you get it and solve it all by yourself. I'm a native Cantonese and Mandarin Chinese speaker. I'd studied
Chinese for over ten years, before I moved to the U.S.
13 Subject... | {"url":"http://www.purplemath.com/snohomish_wa_geometry_tutors.php","timestamp":"2014-04-20T07:03:07Z","content_type":null,"content_length":"23801","record_id":"<urn:uuid:7e2c5bfc-e4f6-4744-8897-62ca6d7f817a>","cc-path":"CC-MAIN-2014-15/segments/1398223210034.18/warc/CC-MAIN-20140423032010-00378-ip-10-147-4-33.ec2.inte... |
IP 2
IP 2. An envelope for the spectrum of a matrix
Chair: Steve Kirkland
An envelope-type region E(A) in the complex plane that contains the eigenvalues of a given n × n complex matrix A is introduced. E(A) is the intersection of an infinite number of regions defined by
cubic curves. The notion and method of constructio... | {"url":"http://www.siam.org/meetings/la12/index.php/ip-2/index.html","timestamp":"2014-04-16T16:00:32Z","content_type":null,"content_length":"10668","record_id":"<urn:uuid:67c175fb-516f-4f9a-989c-e7a7fb9f5bd0>","cc-path":"CC-MAIN-2014-15/segments/1398223206770.7/warc/CC-MAIN-20140423032006-00030-ip-10-147-4-33.ec2.inte... |
Jesse Ernest Wilkins Jr.
Born: 27 November 1923 in Chicago, Illinois, USA
Died: 1 May 2011 in Fountain Hills, Arizona, USA
... | {"url":"http://www-history.mcs.st-andrews.ac.uk/Biographies/Wilkins_Ernest.html","timestamp":"2014-04-20T08:43:38Z","content_type":null,"content_length":"15856","record_id":"<urn:uuid:14f708e7-5ed5-4361-8c93-7ade3f1c90d4>","cc-path":"CC-MAIN-2014-15/segments/1397609538110.1/warc/CC-MAIN-20140416005218-00085-ip-10-147-4... |
• A Course in Mathematical Statistics, Third Edition
Book, October 2014, by Roussas
• A Course in Probability Theory, Revised Edition
Book, October 2000, by Chung
• Advanced Statistics from an Elementary Point of View
Book, October 2005, by Panik
• A First Course in Stochastic Processes
Book, Marc... | {"url":"http://www.elsevier.com/books/subjects/mathematics/statistics-and-probability","timestamp":"2014-04-16T11:03:04Z","content_type":null,"content_length":"71916","record_id":"<urn:uuid:5d0312b2-bcad-42e5-bc45-6f978330e73b>","cc-path":"CC-MAIN-2014-15/segments/1397609523265.25/warc/CC-MAIN-20140416005203-00606-ip-1... |
Illinois PER Interactive Examples: v versus t
Website Detail Page
written by Gary Gladding
published by the University of llinois Physics Education Research Group
This interactive homework problem shows a graph of velocity versus time for a moving object and the student is asked to find the final position. The proble... | {"url":"http://www.thephysicsfront.org/items/detail.cfm?ID=6384","timestamp":"2014-04-17T21:31:35Z","content_type":null,"content_length":"58357","record_id":"<urn:uuid:d8866ee6-739d-4bdc-979d-69e128ed79dc>","cc-path":"CC-MAIN-2014-15/segments/1397609532128.44/warc/CC-MAIN-20140416005212-00270-ip-10-147-4-33.ec2.interna... |
Ben Andrews
BSc PhD ANU
Fellow of the Australian Academy of Science
Fellow of the American Mathematical Society
Fellow of the Australian Mathematical Society
Senior Fellow
Centre for Mathematics and its Applications
Office: Room 2131B, John Dedman Mathematical Sciences Building
Telephone: 6125 3458
Fax: 6125 5549
email... | {"url":"http://maths-people.anu.edu.au/~andrews/","timestamp":"2014-04-16T04:11:47Z","content_type":null,"content_length":"5932","record_id":"<urn:uuid:ae1ec931-798d-4de9-946e-7144c5d66b65>","cc-path":"CC-MAIN-2014-15/segments/1398223204388.12/warc/CC-MAIN-20140423032004-00422-ip-10-147-4-33.ec2.internal.warc.gz"} |
Pi and Polygons
Date: 03/14/99
From: Anonymous
Subject: Pi and Polygons
A simple iterative derivation inscribes an n-polygon inside a circle
until the limit approaches pi (the circumference of the unit circle).
Is there a formula to find the angle of an n-sided polygon given
that it has x sides? This formula is obvious... | {"url":"http://mathforum.org/library/drmath/view/53912.html","timestamp":"2014-04-17T15:56:44Z","content_type":null,"content_length":"7604","record_id":"<urn:uuid:b0479839-0061-4dd4-88ab-f5f18f9cebd2>","cc-path":"CC-MAIN-2014-15/segments/1398223206672.15/warc/CC-MAIN-20140423032006-00363-ip-10-147-4-33.ec2.internal.war... |
Important Messages from the Instructors
Sunday, November 28th, 2010
Your presentation must be a white board lecture.
Tuesday, November 23rd, 2010
Preparing Your Presentation
Your presentations should consist of two parts: a background section and a work section. The former should bring across the essence of... | {"url":"http://www.ccs.neu.edu/home/matthias/7400-f10/blog.html","timestamp":"2014-04-20T13:20:20Z","content_type":null,"content_length":"35246","record_id":"<urn:uuid:46fbfd6c-a7c5-4ed5-9e55-6e5690749dcf>","cc-path":"CC-MAIN-2014-15/segments/1398223204388.12/warc/CC-MAIN-20140423032004-00217-ip-10-147-4-33.ec2.interna... |
Let's make triangular numbers.
Star Member
Re: Let's make triangular numbers.
a triangle with 26 rows, pair them up for 13 pairs of 27.
270 + 81 = 351, yup.
igloo myrtilles fourmis
Re: Let's make triangular numbers.
Is the sum of two other traingular numbers.
378 = Triangular(12) + Triangular(24)
In mathematics, yo... | {"url":"http://www.mathisfunforum.com/viewtopic.php?pid=175180","timestamp":"2014-04-18T23:39:51Z","content_type":null,"content_length":"37512","record_id":"<urn:uuid:ca30164f-b7eb-4d07-b9bb-cd8819860042>","cc-path":"CC-MAIN-2014-15/segments/1398223205137.4/warc/CC-MAIN-20140423032005-00143-ip-10-147-4-33.ec2.internal.... |
Solution on the Whole Plane
August 31st 2008, 11:23 AM #1
Global Moderator
Nov 2005
New York City
Solution on the Whole Plane
Consider the equation, $u_x+2xy^2u_y=0$ on $D = \mathbb{R}^2 - \{ 0 \} \times \mathbb{R}$.
Say that $y$ solves the equation $y' = 2xy^2$ on $(-\infty,0)\cup (0,\infty)$.
Then... | {"url":"http://mathhelpforum.com/calculus/47258-solution-whole-plane.html","timestamp":"2014-04-19T05:03:32Z","content_type":null,"content_length":"32348","record_id":"<urn:uuid:b65b4213-202f-4b09-9bc4-e5785b2080c5>","cc-path":"CC-MAIN-2014-15/segments/1397609535775.35/warc/CC-MAIN-20140416005215-00188-ip-10-147-4-33.e... |
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Solve the polynomial equation... (inside!) Please show work!! ... | {"url":"http://openstudy.com/updates/5098aa60e4b02ec0829c8eeb","timestamp":"2014-04-18T18:44:13Z","content_type":null,"content_length":"49966","record_id":"<urn:uuid:b0dba8bf-fd65-4627-8e7c-90c862763ce6>","cc-path":"CC-MAIN-2014-15/segments/1397609535095.7/warc/CC-MAIN-20140416005215-00282-ip-10-147-4-33.ec2.internal.w... |
Entropy of geometric structures
Last updated: 22/Oct/2010
(This is the first draft of a note to be submitted to a special issue of the Bulletin of the Brazilian Mathematical Society)
Geometric structures
In this note, by a geometric structure, we mean a normed vector bundle $A \to M$ over a vector bundle $M$ (i.e. on e... | {"url":"http://zung.zetamu.net/2010/10/entropy-of-geometric-structures/","timestamp":"2014-04-16T22:53:41Z","content_type":null,"content_length":"126418","record_id":"<urn:uuid:cef90553-d0ac-41f0-aefb-6bbbe3d37a39>","cc-path":"CC-MAIN-2014-15/segments/1397609525991.2/warc/CC-MAIN-20140416005205-00558-ip-10-147-4-33.ec2... |
Occoquan Prealgebra Tutor
Find an Occoquan Prealgebra Tutor
...We helped launch a tutor lab, from which I gained teaching experience. I'm familiar with many concepts that students often struggle with. I can adapt to various learning styles by explaining
with pictures, using analogies of real-life situations, or com... | {"url":"http://www.purplemath.com/occoquan_prealgebra_tutors.php","timestamp":"2014-04-21T02:15:54Z","content_type":null,"content_length":"23750","record_id":"<urn:uuid:6fea789d-4e08-4276-bac6-fce19ca76d85>","cc-path":"CC-MAIN-2014-15/segments/1397609539447.23/warc/CC-MAIN-20140416005219-00483-ip-10-147-4-33.ec2.intern... |
Incorrect Application of PEMDAS and Order of Operations
Date: 09/14/2006 at 16:13:38
From: Monica
Subject: Understanding of the Order of Operations
I was working with students on the order of operations today and
explained that multiplication and division are done from left to
right, as are addition and subtraction. A... | {"url":"http://mathforum.org/library/drmath/view/69146.html","timestamp":"2014-04-19T02:37:04Z","content_type":null,"content_length":"8646","record_id":"<urn:uuid:1107c3c7-b4a2-430d-b63c-ef0340097ca8>","cc-path":"CC-MAIN-2014-15/segments/1397609535745.0/warc/CC-MAIN-20140416005215-00335-ip-10-147-4-33.ec2.internal.warc... |
A Central Limit Theorem Under Metric Entropy with $L_2$ Bracketing
The Annals of Probability
A Central Limit Theorem Under Metric Entropy with $L_2$ Bracketing
Let $(\mathbf{S}, \rho)$ be a metric space, $(\mathbf{V}, \mathscr{V}, \mu)$ be a probability space, and $f: \mathbf{S} \times \mathbf{V} \rightarrow \mathbb{R}... | {"url":"http://projecteuclid.org/euclid.aop/1176992072","timestamp":"2014-04-20T15:56:57Z","content_type":null,"content_length":"29911","record_id":"<urn:uuid:32554983-f01b-4e40-abe9-304b4cea829c>","cc-path":"CC-MAIN-2014-15/segments/1398223206672.15/warc/CC-MAIN-20140423032006-00450-ip-10-147-4-33.ec2.internal.warc.gz... |
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Epsilon delta definition of a limit and application of it for ... | {"url":"http://openstudy.com/updates/514a3c20e4b07974555d63e2","timestamp":"2014-04-17T19:00:47Z","content_type":null,"content_length":"1048827","record_id":"<urn:uuid:b5967520-bf2b-4cb2-a2a4-3a98a80000c0>","cc-path":"CC-MAIN-2014-15/segments/1397609530895.48/warc/CC-MAIN-20140416005210-00175-ip-10-147-4-33.ec2.interna... |
Which options gives f(7-x)
I simply worked f(7-x) out and got the answer exactly described in (d). And x ≠ 19/3 and 0 ≤ x ≤ 7 seem appropriate too.
Now I wonder if there is any tricky thing in other areas. Would any fellow please take a look when you have time. | {"url":"http://mathhelpforum.com/algebra/121692-options-gives-f-7-x.html","timestamp":"2014-04-17T04:00:12Z","content_type":null,"content_length":"38443","record_id":"<urn:uuid:a409a3a7-ca89-42a5-a338-edbcca353a15>","cc-path":"CC-MAIN-2014-15/segments/1397609526252.40/warc/CC-MAIN-20140416005206-00594-ip-10-147-4-33.ec... |
Homework - September 26, 2001
Topics Covered: Principle of Mathematical Induction, proofs by contradiction, vectors spaces (Sec. 2.1) Reading Assignment:
1. Appendix C - Fields pp. 510-513,
2. Handout
3. Sect. 1.2 and 1.3
Homework Problems:
1. In no more than one page write a summary of what is induction and why it... | {"url":"http://www.math.dartmouth.edu/archive/m24f01/public_html/sept26/sept26.html","timestamp":"2014-04-19T17:57:04Z","content_type":null,"content_length":"4677","record_id":"<urn:uuid:8b2ba13a-b8cd-4543-95a5-9ba53d74e320>","cc-path":"CC-MAIN-2014-15/segments/1398223202457.0/warc/CC-MAIN-20140423032002-00213-ip-10-14... |
Ronja, a solution to the Fresnel Zone problem
Solving the Fresnel Zone problem with Ronja
What is the Fresnel Zone?
Line of sight is not enough for radio wireless networks. The wave needs certain amount of space around the line of sight to travel. If there are obstacles within this space, there will be a signal
loss to... | {"url":"http://ronja.twibright.com/fresnel.php","timestamp":"2014-04-18T15:39:41Z","content_type":null,"content_length":"7340","record_id":"<urn:uuid:c9a09fdc-37ea-40d3-9b96-a443ff458cba>","cc-path":"CC-MAIN-2014-15/segments/1397609533957.14/warc/CC-MAIN-20140416005213-00362-ip-10-147-4-33.ec2.internal.warc.gz"} |
Determining Heat Energy Requirements
The objective of any heating application is to raise or maintain the temperature of a solid, liquid or gas to or at a level suitable for a particular process or application. Most heating applications
can be divided into two basic situations; applications which require the maintenanc... | {"url":"http://durexindustries.com/resources/engineering-tools/determining-heat-energy-requirements","timestamp":"2014-04-20T03:26:04Z","content_type":null,"content_length":"33398","record_id":"<urn:uuid:40a1f582-4358-4c00-8bd5-33bb7110f273>","cc-path":"CC-MAIN-2014-15/segments/1398223205375.6/warc/CC-MAIN-201404230320... |
This Article
Bibliographic References
Add to:
ASCII Text x
Thomas B. Sebastian, Philip N. Klein, Benjamin B. Kimia, "Recognition of Shapes by Editi... | {"url":"http://www.computer.org/csdl/trans/tp/2004/05/i0550-abs.html","timestamp":"2014-04-18T00:43:21Z","content_type":null,"content_length":"66296","record_id":"<urn:uuid:b6b53b4b-387c-4ffd-9c12-e91e474ce6e5>","cc-path":"CC-MAIN-2014-15/segments/1398223202457.0/warc/CC-MAIN-20140423032002-00251-ip-10-147-4-33.ec2.int... |
Degrees of Unsolvability
Results 1 - 10 of 40
"... Solovay showed that there are noncomputable reals ff such that H(ff _ n) 6 H(1n) + O(1), where H is prefix-free Kolmogorov complexity. Such H-trivial reals are interesting due to the connection
between algorithmic complexity and effective randomness. We give a new, eas... | {"url":"http://citeseerx.ist.psu.edu/showciting?cid=265755","timestamp":"2014-04-21T08:23:46Z","content_type":null,"content_length":"36630","record_id":"<urn:uuid:79111d46-56bd-432b-8751-f63d107d2898>","cc-path":"CC-MAIN-2014-15/segments/1397609539665.16/warc/CC-MAIN-20140416005219-00469-ip-10-147-4-33.ec2.internal.war... |
topological group
Basic concepts
Group Theory
Classical groups
Finite groups
Group schemes
Topological groups
Lie groups
Super-Lie groups
Higher groups
Cohomology and Extensions
A topological group is a topological space with a continuous group structure: a group object in the category Top.
More explicitly, it is a gro... | {"url":"http://www.ncatlab.org/nlab/show/topological+group","timestamp":"2014-04-18T23:57:38Z","content_type":null,"content_length":"65688","record_id":"<urn:uuid:ac4c9e8f-0f7c-48b9-aee4-b3bc49b43d2b>","cc-path":"CC-MAIN-2014-15/segments/1398223210034.18/warc/CC-MAIN-20140423032010-00173-ip-10-147-4-33.ec2.internal.war... |
st: RE: Pitman's Test of difference in variance...
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st: RE: Pitman's Test of difference in variance...
From "Nick Cox" <n.j.cox@durham.ac.uk>
To <statalist@hsphsun2.harvard.edu>
Subject st: RE: Pitman's Test of difference in variance...
... | {"url":"http://www.stata.com/statalist/archive/2008-03/msg00926.html","timestamp":"2014-04-19T20:54:04Z","content_type":null,"content_length":"6658","record_id":"<urn:uuid:5d5eaa7a-a3f7-4692-97f1-d0eb66daf075>","cc-path":"CC-MAIN-2014-15/segments/1398223203841.5/warc/CC-MAIN-20140423032003-00608-ip-10-147-4-33.ec2.inte... |
Iselin SAT Math Tutor
...I truly have a good time doing SAT Math questions; when I was studying for the SAT during my junior year of high school, I would do SAT Math in my spare time because I had fun with it. Scoring
a 770 in this section, I have developed some tricks to approaching problems and solving them as qu... | {"url":"http://www.purplemath.com/Iselin_SAT_math_tutors.php","timestamp":"2014-04-16T10:47:23Z","content_type":null,"content_length":"23805","record_id":"<urn:uuid:60e72412-474a-4da9-9d61-89bd543d4d8d>","cc-path":"CC-MAIN-2014-15/segments/1398223206147.1/warc/CC-MAIN-20140423032006-00636-ip-10-147-4-33.ec2.internal.wa... |
MAPP Online Low Frequency Polar Data Acquisition
MAPP Online Low Frequency Polar Data Acquisition TECHNICAL REPORT
Download PDF Version (3 Mb)
By Perrin Meyer
August 2003
The high-resolution polar data used by Meyer Sound MAPP Online is acquired at 1 degree spatial resolution using an automated positioning d... | {"url":"http://meyersound.com/support/papers/LF_polar_data/","timestamp":"2014-04-16T16:51:21Z","content_type":null,"content_length":"18439","record_id":"<urn:uuid:4c222233-ed9e-4907-afdc-6ec6b8c1d454>","cc-path":"CC-MAIN-2014-15/segments/1397609524259.30/warc/CC-MAIN-20140416005204-00237-ip-10-147-4-33.ec2.internal.wa... |
Posts about tidbits on that's almost right
The Avrocar located in Dayton, Ohio, US | Atlas Obscura | Curious and Wondrous Travel Destinations
In flight-testing, the Avrocar proved to have unresolved thrust and stability problems. The saucer proved immensely difficult to fly with very sensitive controls, and one pil... | {"url":"http://alltoosimple.wordpress.com/category/tidbits/","timestamp":"2014-04-18T19:07:42Z","content_type":null,"content_length":"43466","record_id":"<urn:uuid:bb1fb92b-a973-4961-8959-b1ebf428996e>","cc-path":"CC-MAIN-2014-15/segments/1397609535095.7/warc/CC-MAIN-20140416005215-00352-ip-10-147-4-33.ec2.internal.war... |
Math Help
March 19th 2009, 10:13 PM #1
Super Member
Feb 2008
Show that to find Rem(n,4) one just needs to replace n e N with the last two digits of n.
Why is it that only the last three digits of n e N need to be considered when calculating Rem(n,8)?
Hi jezllt,
I am not sure if you are familiar wit... | {"url":"http://mathhelpforum.com/number-theory/79606-dividing.html","timestamp":"2014-04-18T00:53:59Z","content_type":null,"content_length":"34119","record_id":"<urn:uuid:0aa4bb00-60d5-4cea-ac10-c69231108a0c>","cc-path":"CC-MAIN-2014-15/segments/1397609532374.24/warc/CC-MAIN-20140416005212-00005-ip-10-147-4-33.ec2.inte... |
Wolfram Demonstrations Project
Hyperbolic Triangle
Using three semicircles, this Demonstration creates a hyperbolic triangle, measures and totals its angles, and calculates its area using the Gauss–Bonnet formula. You can vary the radii of the
circles, thus changing all the measurements.
In the upper half-plane model o... | {"url":"http://demonstrations.wolfram.com/HyperbolicTriangle/","timestamp":"2014-04-16T13:11:03Z","content_type":null,"content_length":"43918","record_id":"<urn:uuid:2eeed688-d8a5-475d-ad1d-fca21f1584ef>","cc-path":"CC-MAIN-2014-15/segments/1398223205137.4/warc/CC-MAIN-20140423032005-00201-ip-10-147-4-33.ec2.internal.w... |
Coordinate Graphing Worksheets
What are coordinate graphs used for?
These graphs are used as a visual aid, usually to show a relationship between whatever X is and whatever Y is. When we deal with numbers alone, sometimes we miss patterns. By putting the information
on a coordinate graph, the picture is clearer. Graphs... | {"url":"http://www.mathworksheetsworld.com/bytopic/coordinategraphing.html","timestamp":"2014-04-18T15:39:20Z","content_type":null,"content_length":"10978","record_id":"<urn:uuid:89662a35-3f04-43fb-956b-72bf10df0135>","cc-path":"CC-MAIN-2014-15/segments/1398223202548.14/warc/CC-MAIN-20140423032002-00439-ip-10-147-4-33.... |
Highbridge, NY Precalculus Tutor
Find a Highbridge, NY Precalculus Tutor
...I have a Ph.D. in chemical engineering from the California Institute of Technology, and a minor concentration in applied mathematics. I have worked over 20 years in research in the oil,
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Minimum solid angle and aspect ratio of an $n$-simplex
up vote 2 down vote favorite
In computational geometry and other fields, it is of interest to have degeneracy measures for shapes of simplices, which quantitatively seperate the regular simplex from degenerate simplices.
In two dimensions, two such shape measures a... | {"url":"http://mathoverflow.net/questions/89807/minimum-solid-angle-and-aspect-ratio-of-an-n-simplex","timestamp":"2014-04-16T10:58:12Z","content_type":null,"content_length":"51451","record_id":"<urn:uuid:9ecef255-6902-4825-8966-3a57a8c91371>","cc-path":"CC-MAIN-2014-15/segments/1397609523265.25/warc/CC-MAIN-2014041600... |
Acceleration of Gravity
November 26th 2007, 10:27 PM #1
Aug 2007
Acceleration of Gravity
The acceleration of gravity can be measured by projecting a body upward and measuring the time that it takes to pass two given points in both directions.
Show that if the time the body takes to pass a horizontal line $A... | {"url":"http://mathhelpforum.com/advanced-applied-math/23581-acceleration-gravity.html","timestamp":"2014-04-18T21:26:49Z","content_type":null,"content_length":"38256","record_id":"<urn:uuid:9a67e751-3e14-468f-ad06-f298bdf7f595>","cc-path":"CC-MAIN-2014-15/segments/1397609535095.9/warc/CC-MAIN-20140416005215-00615-ip-1... |
ECE 531: Detection and Estimation
University of Illinois at Chicago, ECE
Spring 2011
Instructor: Natasha Devroye, devroye@ece.uic.edu
Course coordinates: Tuesday, Thursday from 2-3:15pm in Lincoln Hall 103.
Office hours: Tuesdays from 3:30-4:30pm and Thursdays 5-6pm in SEO 1039, or by appointment
Welcome to ECE 531! Th... | {"url":"http://www.ece.uic.edu/~devroye/courses/ECE531/","timestamp":"2014-04-16T18:56:36Z","content_type":null,"content_length":"13115","record_id":"<urn:uuid:c32aff1e-878d-4c2c-be38-0a59302cad34>","cc-path":"CC-MAIN-2014-15/segments/1397609524644.38/warc/CC-MAIN-20140416005204-00276-ip-10-147-4-33.ec2.internal.warc.g... |
KL divergence(s) comparison,
up vote 2 down vote favorite
$P_1$, $P_2$, $P_3$ are probability distributions defined on the same support.
Knowing that $H(P_1) < H(P_2) < H(P_3)$, can we compare $D_{KL}(P_2,P_1)$ and $D_{KL}(P_3,P_1)$ ?
(H is the Shannon Entropy and $D_{KL}$ is the Kullback–Leibler divergence)
Thank you.... | {"url":"http://mathoverflow.net/questions/125884/kl-divergences-comparison","timestamp":"2014-04-17T01:59:18Z","content_type":null,"content_length":"52778","record_id":"<urn:uuid:fedf24e4-20b1-425d-bc88-de41b03a26d8>","cc-path":"CC-MAIN-2014-15/segments/1397609526102.3/warc/CC-MAIN-20140416005206-00067-ip-10-147-4-33.e... |
A proof about differentiable functions
May 8th 2011, 10:02 AM #1
Junior Member
Mar 2011
A proof about differentiable functions
I'm trying to prove that if two functions f and g are differentiable on R
and they satisfy for all x
f'(x) * g(x) != f(x) * g'(x)
then between every two vanishing points of ... | {"url":"http://mathhelpforum.com/calculus/179900-proof-about-differentiable-functions.html","timestamp":"2014-04-17T19:20:37Z","content_type":null,"content_length":"37248","record_id":"<urn:uuid:6ef54e31-006f-4996-b968-f935db161d27>","cc-path":"CC-MAIN-2014-15/segments/1397609530895.48/warc/CC-MAIN-20140416005210-00465... |
cvs commit: ports/devel Makefile ports/devel/pear-Math_Fraction
Makefile distinfo pkg-descr
cvs commit: ports/devel Makefile ports/devel/pear-Math_Fraction Makefile distinfo pkg-descr
Martin Wilke miwi at FreeBSD.org
Sun Aug 5 14:03:15 PDT 2007
miwi 2007-08-05 21:03:15 UTC
FreeBSD ports repository
Modified ... | {"url":"http://lists.freebsd.org/pipermail/cvs-all/2007-August/229163.html","timestamp":"2014-04-21T07:24:03Z","content_type":null,"content_length":"3742","record_id":"<urn:uuid:e800b94b-0a76-4f0c-98c3-2d4a7ee21e90>","cc-path":"CC-MAIN-2014-15/segments/1397609539665.16/warc/CC-MAIN-20140416005219-00597-ip-10-147-4-33.e... |
A Formula for Intelligence: The Recursive Paradigm
An explanation of the recursive approach to artificial intelligence, written for “The Futurecast,” a monthly column in the Library Journal.
Originally published September 1992. Published on KurzweilAI.net August 6, 2001.
There is a profound satisfaction in simple expla... | {"url":"http://www.kurzweilai.net/a-formula-for-intelligence-the-recursive-paradigm","timestamp":"2014-04-21T04:33:23Z","content_type":null,"content_length":"34045","record_id":"<urn:uuid:63aa9a42-dcf0-49e9-8b0e-049abebd8c88>","cc-path":"CC-MAIN-2014-15/segments/1398223207046.13/warc/CC-MAIN-20140423032007-00092-ip-10-... |
Wolfram Demonstrations Project
Nested Regular Polygons
This Demonstration shows an interesting nesting of successive regular polygons, starting with an equilateral triangle up to a chosen -gon. If the side length of the triangle is 1, can you show that
the side of the square is equal to (approximately 0.966) and that t... | {"url":"http://demonstrations.wolfram.com/NestedRegularPolygons/","timestamp":"2014-04-21T12:23:54Z","content_type":null,"content_length":"42235","record_id":"<urn:uuid:76a6f827-313b-4f5c-9510-5de719739c43>","cc-path":"CC-MAIN-2014-15/segments/1397609539776.45/warc/CC-MAIN-20140416005219-00138-ip-10-147-4-33.ec2.intern... |
Charlie Reeve Subroutines
STSPAC : Charlie Reeve Subroutines
Introduction Charlie Reeve wrote the subroutines available here while he was a staff member in the Statistical Engineering Division (SED). Although these routines were intended for his personal use
rather than as a publically distributable library, we are pro... | {"url":"http://www.itl.nist.gov/div898/software/reeves/homepage.htm","timestamp":"2014-04-18T23:15:07Z","content_type":null,"content_length":"16183","record_id":"<urn:uuid:413ce698-e969-4a73-87f2-15c8a130365a>","cc-path":"CC-MAIN-2014-15/segments/1397609535535.6/warc/CC-MAIN-20140416005215-00233-ip-10-147-4-33.ec2.inte... |
Fundamental Algorithms. Vol. 1. The Art of Computer Programming
Results 1 - 10 of 18
- Journal of the ACM , 1996
"... Abstract. This paper presents a new approach to finding minimum cuts in undirected graphs. The fundamental principle is simple: the edges in a graph’s minimum cut form an extremely small
fraction of the... | {"url":"http://citeseerx.ist.psu.edu/showciting?cid=1050091","timestamp":"2014-04-20T19:39:49Z","content_type":null,"content_length":"35765","record_id":"<urn:uuid:33febf27-a67e-4350-ac17-a7b70c2de119>","cc-path":"CC-MAIN-2014-15/segments/1397609539066.13/warc/CC-MAIN-20140416005219-00191-ip-10-147-4-33.ec2.internal.wa... |
Rounded Corners in ggplot2 Graphics
February 11, 2011
By erik
Last night, while working on something else that I want to finish, I ended up indulging in a bit of "yak shaving". I wondered how easy it would be to generate graphics in ggplot2 with rounded
corners. I don't think that there is any native support for this i... | {"url":"http://www.r-bloggers.com/rounded-corners-in-ggplot2-graphics/","timestamp":"2014-04-21T14:50:30Z","content_type":null,"content_length":"37807","record_id":"<urn:uuid:67746d13-e4a8-4308-a36c-71299ea5c2cc>","cc-path":"CC-MAIN-2014-15/segments/1397609540626.47/warc/CC-MAIN-20140416005220-00095-ip-10-147-4-33.ec2.... |
Queens Village Prealgebra Tutor
Find a Queens Village Prealgebra Tutor
...From Algebraic expressions, Functions and Relations, Composition and Inverses of Functions, Exponential and Logarithmic Functions, Trigonometric Functions and their graphs and more. I provide
all and or most of the practice materials for each... | {"url":"http://www.purplemath.com/queens_village_prealgebra_tutors.php","timestamp":"2014-04-18T04:27:11Z","content_type":null,"content_length":"24299","record_id":"<urn:uuid:3f1bbcf7-498a-47ed-b548-a9267b365e39>","cc-path":"CC-MAIN-2014-15/segments/1397609532480.36/warc/CC-MAIN-20140416005212-00504-ip-10-147-4-33.ec2.... |
Re: K-60 down and fixed
remember running it in forward rotation will help it unscrew from the pipe. reverse will help feed into the line.
150' of roots is time for a jetter. the right jetter does the work for you. and the right nozzle will cut 100% of all roots.
phoebe it is
Re: K-60 down and fixed
Thanks for all the a... | {"url":"https://www.ridgidforum.com/forum/mechanical-trades/professional-plumbing-discussion/45693-k-60-down-and-fixed/page2?t=44559&page=2","timestamp":"2014-04-18T19:44:19Z","content_type":null,"content_length":"164213","record_id":"<urn:uuid:1d7fe41d-1eca-4ba2-a42a-8f5a6d97b5be>","cc-path":"CC-MAIN-2014-15/segme... |
What is 30 KG IN POUNDS?
Mr What? is the first search engine of definitions and meanings, All you have to do is type whatever you want to know in the search box and click WHAT IS!
All the definitions and meanings found are from third-party authors, please respect their copyright.
© 2014 - mrwhatis.net | {"url":"http://mrwhatis.net/30-kg-in-pounds.html","timestamp":"2014-04-16T20:03:24Z","content_type":null,"content_length":"36386","record_id":"<urn:uuid:5764b2c8-46b5-4647-a3fc-23a4e278f322>","cc-path":"CC-MAIN-2014-15/segments/1397609524644.38/warc/CC-MAIN-20140416005204-00615-ip-10-147-4-33.ec2.internal.warc.gz"} |
Re: Bijection
For a, take a step back. Look at what it is saying. Don't see 2n and don't see -2n+1. See odd and even. Now it should become clear, that all that the map is a bijection since all evens and all odds
are hit, and only positives go to evens and only negatives go to odds.
For b, lets do something almost exact... | {"url":"http://www.mathisfunforum.com/viewtopic.php?pid=33497","timestamp":"2014-04-16T04:36:45Z","content_type":null,"content_length":"10094","record_id":"<urn:uuid:9a10bf0b-4a2b-4985-97df-4fa2b52ae4ed>","cc-path":"CC-MAIN-2014-15/segments/1397609521512.15/warc/CC-MAIN-20140416005201-00253-ip-10-147-4-33.ec2.internal.... |
Gaithersburg Precalculus Tutor
...I have been tutoring for 18 years in both math and science. I have helped children as young as 6 with both reading comprehension and mathematical concepts. Young learners are more eager to
learn new concepts but often have not learned logic or working with multiple steps to answer ... | {"url":"http://www.purplemath.com/Gaithersburg_precalculus_tutors.php","timestamp":"2014-04-21T02:34:17Z","content_type":null,"content_length":"24482","record_id":"<urn:uuid:3ee34616-6cce-4017-9cd7-367fd32980d0>","cc-path":"CC-MAIN-2014-15/segments/1397609539447.23/warc/CC-MAIN-20140416005219-00661-ip-10-147-4-33.ec2.i... |
Time and Energy, Inertia and Gravity
The Relationship Between Time, Acceleration, and Velocity and its Affect on Energy, and the Relationship Between Inertia and Gravity
© 2002 Joseph A. Rybczyk
Presented is a theory in fundamental ... | {"url":"http://www.mrelativity.net/TimeEnergyIG/TimeEnergyIG1.htm","timestamp":"2014-04-21T09:36:53Z","content_type":null,"content_length":"103286","record_id":"<urn:uuid:9d64d84b-5fde-4d25-8972-f9eff427c7c8>","cc-path":"CC-MAIN-2014-15/segments/1397609539705.42/warc/CC-MAIN-20140416005219-00483-ip-10-147-4-33.ec2.inte... |
Parallel of surface of revolution
Show that the parallel (cycles) of a surface of revolution are curvature lines! Thank you very much in advance!
By symmetry the direction of the generatrix is a critical point of the function of normal curvature, at a fixed point, so it is one of the principle directions. So the other ... | {"url":"http://mathhelpforum.com/differential-geometry/194162-parallel-surface-revolution.html","timestamp":"2014-04-18T05:51:12Z","content_type":null,"content_length":"30991","record_id":"<urn:uuid:a4318c0a-5289-4145-8971-29f4972bd389>","cc-path":"CC-MAIN-2014-15/segments/1397609532573.41/warc/CC-MAIN-20140416005212-0... |
Tewksbury Precalculus Tutor
...I've also tutored for SAT math as a subject where not only are these subjects tested, but also under test is your speed and your choice of questions. I have a PhD in physics and was a
mathematics olympiad winner in high school. I've always been extremely good at math.
47 Subjects: i... | {"url":"http://www.purplemath.com/Tewksbury_Precalculus_tutors.php","timestamp":"2014-04-20T23:33:01Z","content_type":null,"content_length":"24119","record_id":"<urn:uuid:8dd50b31-c27f-4c05-946a-52b0fafdea14>","cc-path":"CC-MAIN-2014-15/segments/1397609539337.22/warc/CC-MAIN-20140416005219-00368-ip-10-147-4-33.ec2.inte... |
No burnouts allowed
[ Up ]
This program does electrical cable sizing, based on the most basic electrical laws.
If you are planning to do cable sizing for a real installation, check the results and make sure that you comply with all electrical regulations.
From Ohms law, the voltage drop in an electrical conductor is
V ... | {"url":"http://www.coolit.co.za/cablesize/index.htm","timestamp":"2014-04-18T19:01:51Z","content_type":null,"content_length":"7604","record_id":"<urn:uuid:0ef1628c-fffc-40bb-a0ac-e76b76eb0a6e>","cc-path":"CC-MAIN-2014-15/segments/1397609535095.7/warc/CC-MAIN-20140416005215-00268-ip-10-147-4-33.ec2.internal.warc.gz"} |
absolute value continuity
It is very easy to prove that abs(x) is continuous everywhere using epsilon-delta techniques. Yet, let U = (0,1). This is open in [0, infinity). Yet, f inverse (U) can be said to equal (0,1) U
{-1/2} right? This set, call it V is certainly not open in (- infinity, infinity). | {"url":"http://mathhelpforum.com/differential-geometry/194978-absolute-value-continuity.html","timestamp":"2014-04-18T22:21:14Z","content_type":null,"content_length":"39691","record_id":"<urn:uuid:ca835e08-9e50-4c50-aa5b-cfd7893d5278>","cc-path":"CC-MAIN-2014-15/segments/1397609535095.9/warc/CC-MAIN-20140416005215-0065... |
Five Figures - Answer
Answer :
The only set of three numbers, of two, three, and five figures respectively, that will fulfil the required conditions is 27 × 594 = 16,038.
These three numbers contain all the nine digits and 0, without repetition; the first two numbers multiplied together make the third, and the second i... | {"url":"http://www.pedagonet.com/puzzles/three1.htm","timestamp":"2014-04-20T13:19:59Z","content_type":null,"content_length":"10609","record_id":"<urn:uuid:f37ffea0-d0fd-4550-abe1-c0e2843a9d39>","cc-path":"CC-MAIN-2014-15/segments/1398223206118.10/warc/CC-MAIN-20140423032006-00073-ip-10-147-4-33.ec2.internal.warc.gz"} |
Buena Park Math Tutor
Find a Buena Park Math Tutor
...I just love tutoring Algebra 2. I am an excellent math tutor and very patient and caring. I make sure your student understands the material, not only the current lesson, but the prior lessons
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20 Subjects: including algebra 1, algebra 2, vocabulary, gr... | {"url":"http://www.purplemath.com/buena_park_math_tutors.php","timestamp":"2014-04-16T07:32:32Z","content_type":null,"content_length":"23598","record_id":"<urn:uuid:f696f505-102c-4f5a-a7b6-51f5f6f259ed>","cc-path":"CC-MAIN-2014-15/segments/1398223210034.18/warc/CC-MAIN-20140423032010-00035-ip-10-147-4-33.ec2.internal.w... |
Performance Measures
Morningstar's Performance Measures
Sharpe Ratios
Morningstar versus Return Sharpe Ratios
As shown earlier, Morningstar compu... | {"url":"http://www.stanford.edu/~wfsharpe/art/stars/stars6.htm","timestamp":"2014-04-18T18:50:52Z","content_type":null,"content_length":"20929","record_id":"<urn:uuid:bcf78d29-d0b5-4d28-bb5a-4269090cb9d8>","cc-path":"CC-MAIN-2014-15/segments/1397609535095.7/warc/CC-MAIN-20140416005215-00615-ip-10-147-4-33.ec2.internal.... |
This Quantum World/Serious illnesses/Bohr
From Wikibooks, open books for an open world
In 1913 Niels Bohr postulated that the angular momentum $L$ of an orbiting atomic electron was quantized: its "allowed" values are integral multiples of $\hbar$:
$L=n\hbar$ where $n=1,2,3,\dots$
Why quantize angular momentum, rat... | {"url":"https://en.wikibooks.org/wiki/This_Quantum_World/Serious_illnesses/Bohr","timestamp":"2014-04-18T08:19:14Z","content_type":null,"content_length":"34292","record_id":"<urn:uuid:b828126c-2622-43b3-9eb0-977b11bc3a89>","cc-path":"CC-MAIN-2014-15/segments/1397609533121.28/warc/CC-MAIN-20140416005213-00370-ip-10-147-... |
'Simple' statics
Again, you have 4 unknowns but only 3 static equilibrium equations, not 4. If you take the sum of M_A = 0 as one of your static equilibrium equations, then taking the sum of M_B =0 or sum of M_C =0,
buys you nothing. It's sort of like saying sum of F_x =0, sum of F_y =0, both correct and necessary, but... | {"url":"http://www.physicsforums.com/showthread.php?p=2430447","timestamp":"2014-04-16T19:09:46Z","content_type":null,"content_length":"51254","record_id":"<urn:uuid:e05aa69d-5ab5-43a9-899f-2f24725caa70>","cc-path":"CC-MAIN-2014-15/segments/1398223211700.16/warc/CC-MAIN-20140423032011-00336-ip-10-147-4-33.ec2.internal.... |
Main Index Mathematical Analysis Mathematical Constants
Subject Index
... | {"url":"http://www.cs.cas.cz/portal/AlgoMath/MathematicalAnalysis/MathematicalConstants/HarmonicNumber.htm","timestamp":"2014-04-19T07:08:09Z","content_type":null,"content_length":"45997","record_id":"<urn:uuid:ff11f98a-97cf-457b-a11d-ed65e5a38491>","cc-path":"CC-MAIN-2014-15/segments/1397609536300.49/warc/CC-MAIN-2014... |
Square Root of i
Date: 03/08/99 at 21:21:00
From: Nadine Schiavo
Subject: Square Root of i.
In my Honors Algebra II/Trigonometry class, we just completed a section
on complex numbers. One of my students asked me the following:
The square root of -1 is i, but what is the square root of i?
Can you help?
Date: 03/09/99 at... | {"url":"http://mathforum.org/library/drmath/view/53863.html","timestamp":"2014-04-17T01:09:46Z","content_type":null,"content_length":"7066","record_id":"<urn:uuid:7e92ceda-dbc0-437d-ac08-250b35fa9815>","cc-path":"CC-MAIN-2014-15/segments/1397609526102.3/warc/CC-MAIN-20140416005206-00520-ip-10-147-4-33.ec2.internal.warc... |
Remember that putting a negative sign in front of a function means the same thing as multiplying that function by -1.
Sample Question
Let g(x) = -x^2. Then we could think of this function as
g(x) = (-1)(x^2),
g'(x) = (-1)(x^2)' = (-1)(2x) = -2x.
The moral of the story is that the derivative of the negative of f is the ... | {"url":"http://www.shmoop.com/computing-derivatives/derivatives-negative-one-help.html","timestamp":"2014-04-18T15:49:44Z","content_type":null,"content_length":"40637","record_id":"<urn:uuid:ac151fa9-e8e5-4f34-8eec-0e124774faf7>","cc-path":"CC-MAIN-2014-15/segments/1398223206770.7/warc/CC-MAIN-20140423032006-00618-ip-1... |
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Question1-Read this statement: “If a triangle is isosceles, th... | {"url":"http://openstudy.com/updates/50f5c68fe4b0246f1fe3b3d6","timestamp":"2014-04-16T04:43:23Z","content_type":null,"content_length":"28146","record_id":"<urn:uuid:5ca3c417-429c-49b8-9d46-7cc6531f66d0>","cc-path":"CC-MAIN-2014-15/segments/1398223211700.16/warc/CC-MAIN-20140423032011-00499-ip-10-147-4-33.ec2.internal.... |
Time and size limitations
Next: The basic machinery Up: Limitations Previous: Realism of forces
Typical MD simulations can be performed on systems containing thousands--or, perhaps, millions--of atoms, and for simulation times ranging from a few picoseconds to hundreds of nanoseconds. While
these numbers are certa... | {"url":"http://www.fisica.uniud.it/~ercolessi/md/md/node12.html","timestamp":"2014-04-21T04:50:55Z","content_type":null,"content_length":"4967","record_id":"<urn:uuid:e6f269d9-dd5e-49b9-8a9f-32ee184a5a94>","cc-path":"CC-MAIN-2014-15/segments/1397609539493.17/warc/CC-MAIN-20140416005219-00478-ip-10-147-4-33.ec2.internal... |
Earth Avoids Collisions With Pair of Asteroids
41091911 story
Posted by
from the stand-down-Mr.-Willis dept.
Hugh Pickens
"According to NASA, a pair of asteroids — one just over three miles wide — passed Earth Tuesday and early Wednesday, avoiding a potentially cataclysmic impact with our home planet. 2012 XE5,
esti... | {"url":"http://science.slashdot.org/story/12/12/13/0111241/earth-avoids-collisions-with-pair-of-asteroids/informative-comments","timestamp":"2014-04-20T01:38:44Z","content_type":null,"content_length":"85442","record_id":"<urn:uuid:9b3db07a-dd3f-49ee-9e1c-4e9d99b8f137>","cc-path":"CC-MAIN-2014-15/segments/1397609537804.... |
Fermat-like equation $c^n=a^{2n}+a^n b^n + b^{2n}$
MathOverflow is a question and answer site for professional mathematicians. It's 100% free, no registration required.
Is there a solution to the following equation:
$c^n=a^{2n}+a^n b^n + b^{2n}$ where $a,b,c \... | {"url":"http://mathoverflow.net/questions/75744/fermat-like-equation-cn-a2nan-bn-b2n/75828","timestamp":"2014-04-16T07:59:07Z","content_type":null,"content_length":"80666","record_id":"<urn:uuid:32e5b0e9-f399-4b1e-a38d-3c7f84febb4f>","cc-path":"CC-MAIN-2014-15/segments/1397609521558.37/warc/CC-MAIN-20140416005201-00437... |
Math Help
January 30th 2009, 05:45 AM #1
Oct 2008
Diffy Q
A function y = g(x) is described by some geometric property of its graph. Write a differential equation of the form dy/dx = f(x, y) having the function g as its solution (or as one of its
"The line tangent to the graph of g at the point (x, y) inter... | {"url":"http://mathhelpforum.com/differential-equations/70811-diffy-q.html","timestamp":"2014-04-20T03:40:31Z","content_type":null,"content_length":"35691","record_id":"<urn:uuid:5fc1b1de-ae90-43ef-9b54-5c499fdcedaa>","cc-path":"CC-MAIN-2014-15/segments/1398223211700.16/warc/CC-MAIN-20140423032011-00092-ip-10-147-4-33.... |
Results 1 - 10 of 26
- ACTA NUMERICA , 2002
"... this paper. More should be said about these constraints in order to define an IEP. First we recall one condition under which two geometric entities intersect transversally. Loosely speaking, we
may assume that the structural constraint and the spectral constraint define,... | {"url":"http://citeseerx.ist.psu.edu/showciting?cid=925889","timestamp":"2014-04-20T08:01:12Z","content_type":null,"content_length":"39962","record_id":"<urn:uuid:599360f2-9608-4391-874e-bd9c2219d1b7>","cc-path":"CC-MAIN-2014-15/segments/1397609538022.19/warc/CC-MAIN-20140416005218-00092-ip-10-147-4-33.ec2.internal.war... |
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Find all solutions in the interval [0, 2π). (sin x)(cos x) = 0... | {"url":"http://openstudy.com/updates/52d55a68e4b0274b88c4cf85","timestamp":"2014-04-18T00:17:26Z","content_type":null,"content_length":"74105","record_id":"<urn:uuid:feed57d4-4f33-41a0-a71a-e34fda9820c0>","cc-path":"CC-MAIN-2014-15/segments/1398223210034.18/warc/CC-MAIN-20140423032010-00352-ip-10-147-4-33.ec2.internal.... |
Glendale Heights Math Tutor
Find a Glendale Heights Math Tutor
...I will be available for my students at any time by any means of communications. I have a PhD in physics, and I have been teaching it at the college level for 24 years. I did teach at middle and
high school levels to my sons and children of friends.
... | {"url":"http://www.purplemath.com/Glendale_Heights_Math_tutors.php","timestamp":"2014-04-16T19:23:11Z","content_type":null,"content_length":"23997","record_id":"<urn:uuid:5f746989-7f38-4fdb-b723-9efac8711aea>","cc-path":"CC-MAIN-2014-15/segments/1398223205375.6/warc/CC-MAIN-20140423032005-00176-ip-10-147-4-33.ec2.inter... |
dihedral angle
The angle defined by two planes or two faces of a polyhedron meeting at an edge; for example, all the dihedral angles of a cube are 90°. An almost-spherical polyhedron (with many faces) has small
dihedral angles.
A dihedral angle is described by a point on one of the planes or faces, the line of intersec... | {"url":"http://www.daviddarling.info/encyclopedia/D/dihedral_angle.html","timestamp":"2014-04-17T10:16:07Z","content_type":null,"content_length":"6059","record_id":"<urn:uuid:94ac22c4-af1f-4d48-b163-89201ad7708c>","cc-path":"CC-MAIN-2014-15/segments/1398223206672.15/warc/CC-MAIN-20140423032006-00282-ip-10-147-4-33.ec2.... |
MathGroup Archive: January 2009 [00733]
[Date Index] [Thread Index] [Author Index]
Re: Re: Simplifying and Rearranging Expressions
• To: mathgroup at smc.vnet.net
• Subject: [mg95979] Re: [mg95956] Re: Simplifying and Rearranging Expressi... | {"url":"http://forums.wolfram.com/mathgroup/archive/2009/Jan/msg00733.html","timestamp":"2014-04-18T05:33:38Z","content_type":null,"content_length":"38268","record_id":"<urn:uuid:6a50b42f-3e15-4785-9e01-ad68c2343b5b>","cc-path":"CC-MAIN-2014-15/segments/1397609532573.41/warc/CC-MAIN-20140416005212-00387-ip-10-147-4-33.... |
Re: evaluable predicates, general definition
From: Axel Polleres <axel.polleres@deri.org> Date: Thu, 08 Nov 2007 22:00:12 +0000 Message-ID: <473386EC.30705@deri.org> To: Michael Kifer <kifer@cs.sunysb.edu>, "Public-Rif-Wg (E-mail)" <
Michael Kifer wrote:
> Model theory of builtin predicates is not a problem. Modes (bin... | {"url":"http://lists.w3.org/Archives/Public/public-rif-wg/2007Nov/0043.html","timestamp":"2014-04-19T15:27:13Z","content_type":null,"content_length":"10596","record_id":"<urn:uuid:2d0cb109-e0c6-48fc-9b1f-cea1e10ae705>","cc-path":"CC-MAIN-2014-15/segments/1397609537271.8/warc/CC-MAIN-20140416005217-00523-ip-10-147-4-33.... |
Integration by Part
November 8th 2008, 01:13 PM
Integration by Part
So my professor was going over integration by part and using the tabular method. He use the problem:
(the integral sign, big swoosh like thing) (3t+9)^3(2t+e^2t)dt
Now, to find the derivative, I believe he used the chain rule, perhaps? Only... | {"url":"http://mathhelpforum.com/calculus/58391-integration-part-print.html","timestamp":"2014-04-18T01:37:28Z","content_type":null,"content_length":"14945","record_id":"<urn:uuid:0234bb47-1806-442b-aaab-d81195ba87e0>","cc-path":"CC-MAIN-2014-15/segments/1397609532374.24/warc/CC-MAIN-20140416005212-00216-ip-10-147-4-33... |