content stringlengths 86 994k | meta stringlengths 288 619 |
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Wolfram Demonstrations Project
Johnson's Theorem
Let three circles of equal diameter intersect at a point H and intersect pairwise at points A, B, and C. Then the circumcircle of the triangle ABC has the same diameter as the other circles.
Drag the purple points or the slider to change the figure. | {"url":"http://demonstrations.wolfram.com/JohnsonsTheorem/","timestamp":"2014-04-21T15:03:44Z","content_type":null,"content_length":"41707","record_id":"<urn:uuid:8bd3e7ef-4076-4ef6-999b-70c7032e04e0>","cc-path":"CC-MAIN-2014-15/segments/1398223211700.16/warc/CC-MAIN-20140423032011-00176-ip-10-147-4-33.ec2.internal.war... |
Top 10 “Negative” Inventions
Hubble Key Project Team and High-Z Supernova Search Team, NASA, ESA
Throughout the history of math and science, supposedly impossible negative things have repeatedly turned out to be important both mathematically and physically. Here is my unofficial (no, let’s make
that official) Top 10 li... | {"url":"https://www.sciencenews.org/blog/context/top-10-%e2%80%9cnegative%e2%80%9d-inventions","timestamp":"2014-04-19T15:48:17Z","content_type":null,"content_length":"83432","record_id":"<urn:uuid:88f04078-dc08-40ab-b4a9-d2d9e89b4b05>","cc-path":"CC-MAIN-2014-15/segments/1398223205375.6/warc/CC-MAIN-20140423032005-003... |
True Shooting Percentage is the Truth
DeAndre Jordan led the NBA with a 64.3 field goal percentage. But Jordan stinks at the free throw line (38.6%) and doesn’t make three-pointers. Was he really the most accurate shooter? Of course not.
After all, if Kevin Durant goes 5-for-10 (50.0% field goal percentage) on three-po... | {"url":"http://www.sikids.com/print/55991","timestamp":"2014-04-19T05:17:51Z","content_type":null,"content_length":"11093","record_id":"<urn:uuid:296b70c6-c545-4cb0-811f-fb88827b8ba6>","cc-path":"CC-MAIN-2014-15/segments/1397609535775.35/warc/CC-MAIN-20140416005215-00038-ip-10-147-4-33.ec2.internal.warc.gz"} |
MathGroup Archive: November 2009 [00189]
[Date Index] [Thread Index] [Author Index]
Re: Bug with Sequence
• To: mathgroup at smc.vnet.net
• Subject: [mg104619] Re: [mg104568] Bug with Sequence
• From: Leonid Shifrin <lshifr at gmail.com... | {"url":"http://forums.wolfram.com/mathgroup/archive/2009/Nov/msg00189.html","timestamp":"2014-04-17T09:39:01Z","content_type":null,"content_length":"27739","record_id":"<urn:uuid:ec40babd-9fa8-40e0-861d-1722a1b4bb5d>","cc-path":"CC-MAIN-2014-15/segments/1398223207046.13/warc/CC-MAIN-20140423032007-00014-ip-10-147-4-33.... |
Comparison of two normative paediatric gait databases
The availability of age-matched normative data is an essential component of clinical gait analyses. Comparison of normative gait databases is difficult due to the high-dimensionality and temporal
nature of the various gait waveforms. The purpose of this study was to... | {"url":"http://www.dynamic-med.com/content/6/1/8/","timestamp":"2014-04-17T12:35:42Z","content_type":null,"content_length":"97906","record_id":"<urn:uuid:26275316-2234-49f9-b14c-4df40322bbb0>","cc-path":"CC-MAIN-2014-15/segments/1397609530131.27/warc/CC-MAIN-20140416005210-00234-ip-10-147-4-33.ec2.internal.warc.gz"} |
Posts by
Total # Posts: 290
what is the difference between a solution set and a replacement set
whats five times a number squared?
I need a good explination to understand why a positive number minus a negative number equals a positive or in other words you add it. ex 10-(-5)= 15
Please explain why a positive number mi... | {"url":"http://www.jiskha.com/members/profile/posts.cgi?name=Cheryl&page=3","timestamp":"2014-04-21T13:57:50Z","content_type":null,"content_length":"27594","record_id":"<urn:uuid:582ef6d0-c201-4629-87aa-467ca85cfbd2>","cc-path":"CC-MAIN-2014-15/segments/1397609539776.45/warc/CC-MAIN-20140416005219-00385-ip-10-147-4-33.... |
Conceptual Models and Applied Mathematical Problem-Solving Research
Rational Number Project Home Page
Lesh, R., Landau, M. & Hamilton, E. (1983). Conceptual models in applied mathematical problem solving research. In R. Lesh & M. Landau (Eds.), Acquisition of Mathematics Concepts & Processes (pp.
263-343). NY: Academic... | {"url":"http://www.cehd.umn.edu/ci/rationalnumberproject/83_2.html","timestamp":"2014-04-19T09:23:58Z","content_type":null,"content_length":"268543","record_id":"<urn:uuid:03407e6a-ef24-4ebe-99aa-8423e18b53de>","cc-path":"CC-MAIN-2014-15/segments/1398223206770.7/warc/CC-MAIN-20140423032006-00046-ip-10-147-4-33.ec2.inte... |
Re: st: What is an integer for Stata?
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Re: st: What is an integer for Stata?
From Sergiy Radyakin <serjradyakin@gmail.com>
To statalist@hsphsun2.harvard.edu
Subject Re: st: What is an integer for Stata?
Date Thu, 8 Oct 2009 10:54:20 -0... | {"url":"http://www.stata.com/statalist/archive/2009-10/msg00396.html","timestamp":"2014-04-16T19:12:51Z","content_type":null,"content_length":"9534","record_id":"<urn:uuid:d1e7b8ca-9b9c-422f-a87b-5322f4f93108>","cc-path":"CC-MAIN-2014-15/segments/1397609524644.38/warc/CC-MAIN-20140416005204-00032-ip-10-147-4-33.ec2.int... |
Conditional Probability
The probability P(A)P(A) of an event A is a measure of the likelihood that the event will occur on any trial. Sometimes partial information determines that an event C has occurred. Given this
information, it may be necessary to reassign the likelihood for each event A. This leads to the notion o... | {"url":"http://cnx.org/content/m23252/latest/?collection=col10708/latest","timestamp":"2014-04-17T01:02:35Z","content_type":null,"content_length":"331898","record_id":"<urn:uuid:aacecd1a-b496-40fa-8783-dc370f9d3fd8>","cc-path":"CC-MAIN-2014-15/segments/1397609526102.3/warc/CC-MAIN-20140416005206-00473-ip-10-147-4-33.ec... |
Anaheim Hills, CA Math Tutor
Find an Anaheim Hills, CA Math Tutor
...I was exposed to an educational institution where spelling was a "MUST" in the learning environment. I may not be a "Spelling Bee" material, but I'm pretty competitive. I have elementary math
8 Subjects: including algebra 1, reading, English, gram... | {"url":"http://www.purplemath.com/Anaheim_Hills_CA_Math_tutors.php","timestamp":"2014-04-16T16:05:51Z","content_type":null,"content_length":"24110","record_id":"<urn:uuid:b3aab2e3-3aab-485e-9166-3ac82cf504ce>","cc-path":"CC-MAIN-2014-15/segments/1398223206770.7/warc/CC-MAIN-20140423032006-00316-ip-10-147-4-33.ec2.inter... |
Top 10 “Negative” Inventions
Hubble Key Project Team and High-Z Supernova Search Team, NASA, ESA
Throughout the history of math and science, supposedly impossible negative things have repeatedly turned out to be important both mathematically and physically. Here is my unofficial (no, let’s make
that official) Top 10 li... | {"url":"https://www.sciencenews.org/blog/context/top-10-%e2%80%9cnegative%e2%80%9d-inventions","timestamp":"2014-04-19T15:48:17Z","content_type":null,"content_length":"83432","record_id":"<urn:uuid:88f04078-dc08-40ab-b4a9-d2d9e89b4b05>","cc-path":"CC-MAIN-2014-15/segments/1397609537271.8/warc/CC-MAIN-20140416005217-003... |
mutual information. concave/convex
hi everybody,
while looking on the mutual information of two variables, one find that it is concave of p(x) given p(x|y) and convex of p(x|y) given p(x).
the first statement is okey, but when it comes to proving the second, i get stuck, even when i find proofs already done i didn't ge... | {"url":"http://www.physicsforums.com/showthread.php?p=3625572","timestamp":"2014-04-21T04:49:19Z","content_type":null,"content_length":"20279","record_id":"<urn:uuid:b2dc2c89-914c-4ae5-bbc6-4f67675cd1af>","cc-path":"CC-MAIN-2014-15/segments/1397609539493.17/warc/CC-MAIN-20140416005219-00586-ip-10-147-4-33.ec2.internal.... |
Math Forum Discussions
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Topic: Treatment of Negative Numbers
Replies: 12 Last Post: Dec 5, 2012 2:13 AM
Messages: [ Previous | ... | {"url":"http://mathforum.org/kb/message.jspa?messageID=7930932","timestamp":"2014-04-16T22:41:01Z","content_type":null,"content_length":"31147","record_id":"<urn:uuid:adef8b68-1d12-4824-bc0b-337539c72e57>","cc-path":"CC-MAIN-2014-15/segments/1397609525991.2/warc/CC-MAIN-20140416005205-00551-ip-10-147-4-33.ec2.internal.... |
transition from global to modular temporal reasoning about programs. volume F-13
Results 1 - 10 of 46
, 1997
"... In a trace-based world, the modular specification, verification, and control of live systems require each module to be receptive; that is, each module must be able to meet its liveness
assumptions no matter... | {"url":"http://citeseerx.ist.psu.edu/showciting?cid=165513","timestamp":"2014-04-18T13:38:09Z","content_type":null,"content_length":"40042","record_id":"<urn:uuid:aadba432-472d-4868-9d4a-4d0c38eeb358>","cc-path":"CC-MAIN-2014-15/segments/1398223202548.14/warc/CC-MAIN-20140423032002-00286-ip-10-147-4-33.ec2.internal.war... |
Little Neck Algebra 2 Tutor
Find a Little Neck Algebra 2 Tutor
...I created verbalization techniques for a college student with cerebral palsy and paraplegia to use during test taking scenarios in history and algebra. As a special needs teacher in Uganda, I
worked to support the literacy, math, and life skills of s... | {"url":"http://www.purplemath.com/Little_Neck_Algebra_2_tutors.php","timestamp":"2014-04-17T07:22:27Z","content_type":null,"content_length":"24421","record_id":"<urn:uuid:84f82e25-c234-4f80-a749-4cb445c9a48f>","cc-path":"CC-MAIN-2014-15/segments/1397609526311.33/warc/CC-MAIN-20140416005206-00602-ip-10-147-4-33.ec2.inte... |
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causal signals and causal system
Causality in systems makes the most sense. Causality in signals doesn't make that much sense.
Causality in systems determines whether a system relies on future information of a signal x[n+1].
When talking about "causality" in signals, we mean whether they are zero to the left of t=0 or ... | {"url":"http://www.physicsforums.com/showthread.php?p=4236943","timestamp":"2014-04-18T15:49:40Z","content_type":null,"content_length":"25294","record_id":"<urn:uuid:29f9df70-324c-40ab-8f2d-1c90252be642>","cc-path":"CC-MAIN-2014-15/segments/1397609533957.14/warc/CC-MAIN-20140416005213-00191-ip-10-147-4-33.ec2.internal.... |
Scatterplots and Regressions
Scatterplots and Regressions (page 4 of 4)
Until (and unless) you get into a statistics class, the preceding pages cover pretty much all there is to scatterplots and regressions. You draw the dots (or enter them into your calculator), you
eyeball a line (or find one in the calculator), and ... | {"url":"http://www.purplemath.com/modules/scattreg4.htm","timestamp":"2014-04-18T00:30:45Z","content_type":null,"content_length":"31879","record_id":"<urn:uuid:8da21de8-cef3-4abc-8cac-76800f2d226a>","cc-path":"CC-MAIN-2014-15/segments/1397609532374.24/warc/CC-MAIN-20140416005212-00260-ip-10-147-4-33.ec2.internal.warc.g... |
Penn Ctr, PA Prealgebra Tutor
Find a Penn Ctr, PA Prealgebra Tutor
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without memorization. I am a graduate student getting my... | {"url":"http://www.purplemath.com/penn_ctr_pa_prealgebra_tutors.php","timestamp":"2014-04-19T14:51:17Z","content_type":null,"content_length":"24329","record_id":"<urn:uuid:c6c1519e-7ba6-4342-82a0-fa949999d6e6>","cc-path":"CC-MAIN-2014-15/segments/1397609537271.8/warc/CC-MAIN-20140416005217-00179-ip-10-147-4-33.ec2.inte... |
RE: st: comparing survival models: Cox vs AFT
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RE: st: comparing survival models: Cox vs AFT
From "Moran, John (NWAHS)" <John.Moran@nwahs.sa.gov.au>
To "'statalist@hsphsun2.harvard.edu'" <statalist@hsphsun2.harvard.edu>
Subject RE: st: c... | {"url":"http://www.stata.com/statalist/archive/2002-08/msg00406.html","timestamp":"2014-04-19T09:41:57Z","content_type":null,"content_length":"9496","record_id":"<urn:uuid:f29890e2-43e9-4db4-89c4-893c94a79f6e>","cc-path":"CC-MAIN-2014-15/segments/1398223203841.5/warc/CC-MAIN-20140423032003-00470-ip-10-147-4-33.ec2.inte... |
Verizon Thinkfinity
Having trouble sorting through all the wonderful resources Illuminations has to offer? Not to worry! We've complied a fail-proof list of our top ten! Have comments, suggestions, and or evidence of
impact? We'd love to hear from you!
Top Ten Lesson Plans
In this activity, students choose a picture an... | {"url":"http://thinkfinity.org/docs/DOC-12646","timestamp":"2014-04-25T05:55:28Z","content_type":null,"content_length":"164605","record_id":"<urn:uuid:c4d9be1b-c279-4bf0-8fce-a9a0e0f39a67>","cc-path":"CC-MAIN-2014-15/segments/1398223210034.18/warc/CC-MAIN-20140423032010-00179-ip-10-147-4-33.ec2.internal.warc.gz"} |
A Hypothetical Population Of 500 Cats Has Two Alleles, ... | Chegg.com
A hypothetical population of 500 cats has two alleles, T and t, for a gene that codes for tail length. The table below presents the phenotype of cats with each possible genotype, as well as the
number of individuals in the population with each genot... | {"url":"http://www.chegg.com/homework-help/questions-and-answers/hypothetical-population-500-cats-two-alleles-t-t-gene-codes-tail-length-table-presents-phe-q2009411","timestamp":"2014-04-18T07:11:32Z","content_type":null,"content_length":"24572","record_id":"<urn:uuid:0419b76f-42d9-4c3e-b348-b7b683217e03>","cc-path":"C... |
Thermodynamics Problems
First problem: temperatures should be in Kelvins. (Always) It makes no sense to divide a temperature in degrees Celsius by anything.
Second problem: a liter is defined as a cubic decimeter. An easy way to remember this is that one milliliter is equal to one cubic centimeter.
Third problem: pay a... | {"url":"http://www.physicsforums.com/showthread.php?t=312390","timestamp":"2014-04-19T12:35:15Z","content_type":null,"content_length":"39662","record_id":"<urn:uuid:8d24814f-e34c-43d9-959a-1356cd3791c7>","cc-path":"CC-MAIN-2014-15/segments/1397609537186.46/warc/CC-MAIN-20140416005217-00618-ip-10-147-4-33.ec2.internal.w... |
Copyright © University of Cambridge. All rights reserved.
'Tree Graphs' printed from http://nrich.maths.org/
The simplest tree graph consists of one line with two vertices, one at each end.
If a new line is added it must connect to one and only one of the existing vertices.
If the new line connected to no vertices, the... | {"url":"http://nrich.maths.org/453/solution?nomenu=1","timestamp":"2014-04-16T13:50:34Z","content_type":null,"content_length":"4864","record_id":"<urn:uuid:5f9ae4e4-7b22-48b3-b750-40c9745ef3c3>","cc-path":"CC-MAIN-2014-15/segments/1397609523429.20/warc/CC-MAIN-20140416005203-00378-ip-10-147-4-33.ec2.internal.warc.gz"} |
MAP inference software package
Given a BN whose graph is a tree and whose nodes are all binary, which is the most efficient algorithm to compute the Most Probable Explanation, i.e. the assignment to all nodes associated with the
maximum probability? Is there any "R" package implementing appropriate algorithms?
asked... | {"url":"http://www.aiqus.com/questions/38786/map-inference-software-package","timestamp":"2014-04-20T18:22:56Z","content_type":null,"content_length":"25726","record_id":"<urn:uuid:1e5d3264-7fc4-4c8b-8301-e5ee334f76ab>","cc-path":"CC-MAIN-2014-15/segments/1397609539066.13/warc/CC-MAIN-20140416005219-00131-ip-10-147-4-33... |
Differentiability and the chain rule (multivariable calculus)
September 24th 2010, 10:33 AM
Differentiability and the chain rule (multivariable calculus)
I have a problem with the next exercise:
Given de function $f(x,y)=\begin{Bmatrix} \displaystyle\frac{xy^2}{x^2+y^2} & \mbox{ if }& (x,y)eq{(0,0)}\\0 & \mbox{... | {"url":"http://mathhelpforum.com/calculus/157306-differentiability-chain-rule-multivariable-calculus-print.html","timestamp":"2014-04-21T06:00:21Z","content_type":null,"content_length":"10612","record_id":"<urn:uuid:60fa5764-207b-4eb3-8bc4-fb892ddf9c57>","cc-path":"CC-MAIN-2014-15/segments/1397609539493.17/warc/CC-MAIN... |
A Concrete View of Rule 110 Computation
@MISC{Cook906aconcrete, author = {Matthew Cook}, title = {A Concrete View of Rule 110 Computation}, year = {906}}
Rule 110 is a cellular automaton that performs repeated simultaneous updates of an infinite row of binary values. The values are updated in the following way: 0s are ... | {"url":"http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.249.1382","timestamp":"2014-04-16T05:58:56Z","content_type":null,"content_length":"20869","record_id":"<urn:uuid:b7acd0d5-4c19-49f4-97f0-9a8679def461>","cc-path":"CC-MAIN-2014-15/segments/1397609521512.15/warc/CC-MAIN-20140416005201-00314-ip-10-147-4-33.ec... |
Mathematics 215 > D'souza > Notes > Regular Homework 5 | StudyBlue
Simply amazing. The flashcards are smooth, there are many different types of studying tools, and there is a great search engine. I praise you on the awesomeness. - Dennis
I have been getting MUCH better grades on all my tests for school. Flash cards, no... | {"url":"http://www.studyblue.com/notes/note/n/regular-homework-5/file/466074","timestamp":"2014-04-18T18:12:43Z","content_type":null,"content_length":"33521","record_id":"<urn:uuid:5b7256d6-06cc-4789-8fa9-04607a52d8ed>","cc-path":"CC-MAIN-2014-15/segments/1397609535095.7/warc/CC-MAIN-20140416005215-00317-ip-10-147-4-33... |
LAPACK Routines
Next: Level 1, 2, and Up: Overview of Tape Contents Previous: Overview of Tape Contents   Contents
There are three classes of LAPACK routines:
• driver routines solve a complete problem, such as solving a system of linear equations or computing the eigenvalues of a real symmetric matrix. User... | {"url":"http://www.netlib.org/lapack/lawn41/node6.html","timestamp":"2014-04-19T04:27:16Z","content_type":null,"content_length":"3578","record_id":"<urn:uuid:48cabd78-7cb3-4c15-8a4a-e7a420d66ddd>","cc-path":"CC-MAIN-2014-15/segments/1398223210034.18/warc/CC-MAIN-20140423032010-00435-ip-10-147-4-33.ec2.internal.warc.gz"... |
MathGroup Archive: July 2001 [00244]
[Date Index] [Thread Index] [Author Index]
Re: Re: about ConstrainedMin
• To: mathgroup at smc.vnet.net
• Subject: [mg29888] Re: [mg29855] Re: [mg29806] about ConstrainedMin
• From: Daniel Lichtblau ... | {"url":"http://forums.wolfram.com/mathgroup/archive/2001/Jul/msg00244.html","timestamp":"2014-04-16T07:29:12Z","content_type":null,"content_length":"42106","record_id":"<urn:uuid:f81058cf-0135-4306-8421-90896ea76a3e>","cc-path":"CC-MAIN-2014-15/segments/1398223205137.4/warc/CC-MAIN-20140423032005-00322-ip-10-147-4-33.e... |
Wolfram Demonstrations Project
Triangles on a Sphere
This Demonstration shows a spherical triangle. Three 2D sliders on the left control the vertices with spherical coordinates and sliding horizontally from 0 to 360° and vertically from 0 to 180°,
Geometry on a sphere is a noneuclidean geometry. Straight lines are repr... | {"url":"http://demonstrations.wolfram.com/TrianglesOnASphere/","timestamp":"2014-04-19T07:10:54Z","content_type":null,"content_length":"42247","record_id":"<urn:uuid:c0af2e82-4e25-4754-ae95-14dd73198065>","cc-path":"CC-MAIN-2014-15/segments/1397609536300.49/warc/CC-MAIN-20140416005216-00354-ip-10-147-4-33.ec2.internal.... |
10 Things to know about Confidence Intervals
About Jeff Sauro
Jeff Sauro is the founding principal of Measuring Usability LLC, a company providing statistics and usability consulting to Fortune 1000 companies.
He is the author of over 20 journal articles and 4 books on statistics and the user-experience.
More about Jef... | {"url":"http://www.measuringusability.com/blog/ci-10things.php","timestamp":"2014-04-16T18:56:49Z","content_type":null,"content_length":"35651","record_id":"<urn:uuid:14cc1324-ebb8-4072-a31f-9ac74489f0a4>","cc-path":"CC-MAIN-2014-15/segments/1397609524644.38/warc/CC-MAIN-20140416005204-00315-ip-10-147-4-33.ec2.internal... |
Writing propositions using connectives and quantifiers
October 20th 2013, 11:20 AM #1
Oct 2013
Writing propositions using connectives and quantifiers
Hi guys,
I'm struggling to take on these questions where I am asked to write propositions using connectives and quantifiers:
Let P(x) be the statement tha... | {"url":"http://mathhelpforum.com/differential-geometry/223246-writing-propositions-using-connectives-quantifiers.html","timestamp":"2014-04-16T17:14:42Z","content_type":null,"content_length":"85715","record_id":"<urn:uuid:a3f85e74-8f62-49fb-9eda-d293a3cbe82b>","cc-path":"CC-MAIN-2014-15/segments/1398223203235.2/warc/CC... |
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://books.nap.edu/openbook.php?record_id=5870&page=743","timestamp":"2014-04-18T23:25:21Z","content_type":null,"content_length":"109397","record_id":"<urn:uuid:acddc725-70a2-4b8f-8a61-c13599c93f38>","cc-path":"CC-MAIN-2014-15/segments/1397609535535.6/warc/CC-MAIN-20140416005215-00363-ip-10-147-4-33.ec2.inter... |
Binomial distribution (the question might be incomplete!)
February 13th 2007, 09:13 AM #1
Feb 2007
Binomial distribution (the question might be incomplete!)
could you please answer a question I vaguely remember?
question: given p =0.3 . calculate the binomial distribution P(X>=2) ?
If the question is in... | {"url":"http://mathhelpforum.com/advanced-statistics/11549-binomial-distribution-question-might-incomplete.html","timestamp":"2014-04-16T19:13:45Z","content_type":null,"content_length":"51678","record_id":"<urn:uuid:7986cc21-0450-4abb-8d4c-23f1f7c8378f>","cc-path":"CC-MAIN-2014-15/segments/1397609524644.38/warc/CC-MAIN... |
Very General
Re: Very General
Hi Dave;
DaveRobinsonUK wrote:
How is everybody?
I remember once being asked that type of question and replying."everything is okay."
That's when he hit me with the following super reply."Hmmm, if I thought everything was okay, it would mean I didn't really understand the situation... | {"url":"http://www.mathisfunforum.com/viewtopic.php?pid=147953","timestamp":"2014-04-19T09:34:54Z","content_type":null,"content_length":"12472","record_id":"<urn:uuid:0a66b0be-213a-469b-890d-5a9391833b63>","cc-path":"CC-MAIN-2014-15/segments/1398223202774.3/warc/CC-MAIN-20140423032002-00568-ip-10-147-4-33.ec2.internal.... |
A Physical Interpretation of String Theory?
Authors: Dirk J. Pons
This note identifies similarities between the cordus conjecture and string theory, and suggests opportunity for new research directions. To fully define a cordus particule requires 11 geometric
independent-variables. This is the same number of dimensions... | {"url":"http://vixra.org/abs/1204.0047","timestamp":"2014-04-16T18:56:46Z","content_type":null,"content_length":"7606","record_id":"<urn:uuid:7f693004-3128-4b37-813f-ebd189f5934c>","cc-path":"CC-MAIN-2014-15/segments/1398223202548.14/warc/CC-MAIN-20140423032002-00233-ip-10-147-4-33.ec2.internal.warc.gz"} |
Summary: Linear Algebra and its Applications 409 (2005) 1331
On the difference between the maximum
multiplicity and path cover number for tree-like
Francesco Barioli a, Shaun Fallat b,,1, Leslie Hogben c
aSchool of Mathematics and Statistics, Carleton University, Ottawa, ON, Canada K1S 5B6
bDepartment of Mathematics a... | {"url":"http://www.osti.gov/eprints/topicpages/documents/record/781/2144102.html","timestamp":"2014-04-21T13:02:32Z","content_type":null,"content_length":"8310","record_id":"<urn:uuid:72b7311f-0a6c-4f06-a6a9-a71ae3e7167f>","cc-path":"CC-MAIN-2014-15/segments/1398223203422.8/warc/CC-MAIN-20140423032003-00243-ip-10-147-4... |
Speed versus RPM calculator
Speed versus RPM Calculator
Tire Expansion:
There is a potential for error in these calculations with bias-belted tires due to centrifugal force expansion of the tire at high speeds, but that effect is gene... | {"url":"http://wahiduddin.net/calc/calc_speed_rpm.htm","timestamp":"2014-04-17T04:02:42Z","content_type":null,"content_length":"11974","record_id":"<urn:uuid:7faec3a5-7202-42aa-a6c8-e31e36be9e1a>","cc-path":"CC-MAIN-2014-15/segments/1397609526252.40/warc/CC-MAIN-20140416005206-00516-ip-10-147-4-33.ec2.internal.warc.gz"... |
Random variable generation (Pt 3 of 3)
This post is based on chapter 1.4.3 of Advanced Markov Chain Monte Carlo. Previous posts on this book can be found via the AMCMC tag.
The ratio-of-uniforms was initially developed by Kinderman and Monahan (1977) and can be used for generating random numbers from many standard di... | {"url":"http://csgillespie.wordpress.com/2011/01/12/random-variable-generation-pt-3-of-3/","timestamp":"2014-04-19T09:24:05Z","content_type":null,"content_length":"65290","record_id":"<urn:uuid:f50dbf5f-d550-4f18-a302-e7e62ddaa74c>","cc-path":"CC-MAIN-2014-15/segments/1398223202457.0/warc/CC-MAIN-20140423032002-00658-i... |
What are the ways we can generate ellipses?
We’ve been working with ellipses. I have talked about some of these this year. Others I haven’t. But I like this list for future reference.
• The set of points from two points (called foci) which have a set sum of distances from these two pointsand for a cool video illustra... | {"url":"http://samjshah.com/2013/04/23/ellipses/","timestamp":"2014-04-17T03:56:51Z","content_type":null,"content_length":"98594","record_id":"<urn:uuid:515c3321-ccba-4c77-beda-ce678c9d9d32>","cc-path":"CC-MAIN-2014-15/segments/1397609526252.40/warc/CC-MAIN-20140416005206-00028-ip-10-147-4-33.ec2.internal.warc.gz"} |
Previous work on this generalization of continued fractions?
up vote 6 down vote favorite
The 2x2 matrix representation of a continued fraction makes it clear that we're multiplying together a bunch of group elements. Inversion is essentially freely adjoining a generator to a Coxeter
group; the usual notion of simple c... | {"url":"http://mathoverflow.net/questions/114460/previous-work-on-this-generalization-of-continued-fractions","timestamp":"2014-04-17T07:05:05Z","content_type":null,"content_length":"56624","record_id":"<urn:uuid:c59179f4-1539-4986-b2a3-1a221c98c3fe>","cc-path":"CC-MAIN-2014-15/segments/1397609526311.33/warc/CC-MAIN-20... |
The Big Picture » John Murphy’s Ten Laws of Technical Trading » Print
1. Map the Trends
Study long-term charts. Begin a chart analysis with monthly and weekly charts spanning several years. A larger scale “map of the market” provides more visibility and a better long-term
perspective on a market. Once the ... | {"url":"http://www.ritholtz.com/blog/2005/05/john-murphys-ten-laws-of-technical-trading/print/","timestamp":"2014-04-19T14:53:31Z","content_type":null,"content_length":"10248","record_id":"<urn:uuid:68d57d9f-d9b9-4b43-a7d2-43bb3d447b59>","cc-path":"CC-MAIN-2014-15/segments/1397609537271.8/warc/CC-MAIN-20140416005217-00... |
A Characterization of Continuity Revisited
Gámez Merino, José Luis and Muñoz Fernández, Gustavo Adolfo and Seoane Sepúlveda, Juan Benigno (2011) A Characterization of Continuity Revisited. American Mathematical Monthly, 118 (2). pp. 167-170.
ISSN 0002-9890
Official URL: http://www.ingentaconnect.com/content/maa/amm/201... | {"url":"http://eprints.ucm.es/16895/","timestamp":"2014-04-21T05:03:34Z","content_type":null,"content_length":"24606","record_id":"<urn:uuid:bea6ff67-854e-4385-b1cc-618437e054b3>","cc-path":"CC-MAIN-2014-15/segments/1397609539493.17/warc/CC-MAIN-20140416005219-00110-ip-10-147-4-33.ec2.internal.warc.gz"} |
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for newton's laws, do you refer to acceleration as m/s^2 or N/... | {"url":"http://openstudy.com/updates/50beb829e4b09e7e3b85ed32","timestamp":"2014-04-19T22:30:21Z","content_type":null,"content_length":"72495","record_id":"<urn:uuid:210ff2f4-136d-4b22-a594-46b82d183935>","cc-path":"CC-MAIN-2014-15/segments/1397609537754.12/warc/CC-MAIN-20140416005217-00479-ip-10-147-4-33.ec2.internal.... |
Symmetry 2 - p2 (Science U)
the tilings is symmetric with respect to 180 degree turns around any of the red points.
first symmetry - p1 - to wallpaper the plane with this larger tile. Moreover, we will obtain the same tiling of the plane as the p2 animation above is constructing. Hence, the p2 tiling is also
symmetric ... | {"url":"http://www.scienceu.com/geometry/articles/tiling/symmetry/p2.html","timestamp":"2014-04-21T00:05:44Z","content_type":null,"content_length":"15269","record_id":"<urn:uuid:f45182f7-ad3b-4351-8aa0-9cb0c15ebfc3>","cc-path":"CC-MAIN-2014-15/segments/1397609539337.22/warc/CC-MAIN-20140416005219-00040-ip-10-147-4-33.e... |
force direction
June 11th 2011, 02:07 PM #1
MHF Contributor
Nov 2008
force direction
i have a capacitator
and we insert a dielectric plate inside
the capacitance rises and total energy of the capacitator drops
what force will act on the plate iin what direction
do you have some links on it
Re: f... | {"url":"http://mathhelpforum.com/advanced-math-topics/182855-force-direction.html","timestamp":"2014-04-23T19:49:29Z","content_type":null,"content_length":"31280","record_id":"<urn:uuid:d6d72f67-63f3-4839-9da1-dd3fb09eee3c>","cc-path":"CC-MAIN-2014-15/segments/1398223203422.8/warc/CC-MAIN-20140423032003-00440-ip-10-147... |
Intra-channel nonlinearity compensation with scaled translational symmetry
« journal navigation
Intra-channel nonlinearity compensation with scaled translational symmetry
Optics Express, Vol. 12, Issue 18, pp. 4282-4296 (2004)
It is proposed and demonstrated that two fiber spans in a scaled translational symmetry could... | {"url":"http://www.opticsinfobase.org/oe/fulltext.cfm?uri=oe-12-18-4282&id=81088","timestamp":"2014-04-18T03:09:12Z","content_type":null,"content_length":"279294","record_id":"<urn:uuid:8f7d9c22-3c83-4169-a708-c9dad4d13d89>","cc-path":"CC-MAIN-2014-15/segments/1397609532480.36/warc/CC-MAIN-20140416005212-00405-ip-10-14... |
Controller Design for a Second-Order Plant with Uncertain Parameters and Disturbance: Application to a DC Motor
Abstract and Applied Analysis
Volume 2013 (2013), Article ID 169519, 16 pages
Research Article
Controller Design for a Second-Order Plant with Uncertain Parameters and Disturbance: Application to a DC Motor
^... | {"url":"http://www.hindawi.com/journals/aaa/2013/169519/","timestamp":"2014-04-20T18:50:49Z","content_type":null,"content_length":"835000","record_id":"<urn:uuid:e565c970-a8f6-46fc-883a-ff6d5dc6869c>","cc-path":"CC-MAIN-2014-15/segments/1397609539066.13/warc/CC-MAIN-20140416005219-00248-ip-10-147-4-33.ec2.internal.warc... |
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User... | {"url":"http://mathforum.org/kb/profile.jspa?userID=155464","timestamp":"2014-04-17T13:18:47Z","content_type":null,"content_length":"11330","record_id":"<urn:uuid:4a2a038c-3e64-4976-b44e-0c26fef3adda>","cc-path":"CC-MAIN-2014-15/segments/1398223201753.19/warc/CC-MAIN-20140423032001-00471-ip-10-147-4-33.ec2.internal.war... |
Question about best rational approximations.
December 8th 2011, 08:35 AM #1
Question about best rational approximations.
I have a quick question about best rational approximations of irrational numbers using continued fractions etc. (Continued fraction - Wikipedia, the free encyclopedia) Suppose we have a real
... | {"url":"http://mathhelpforum.com/number-theory/193783-question-about-best-rational-approximations.html","timestamp":"2014-04-19T23:36:16Z","content_type":null,"content_length":"31564","record_id":"<urn:uuid:8cca6899-6c31-4311-b6bd-1354c1504864>","cc-path":"CC-MAIN-2014-15/segments/1397609537754.12/warc/CC-MAIN-20140416... |
8.10 An Engine Of The Orbital Maneuvering System ... | Chegg.com
An engine of the orbital maneuvering system (OMS) on a spaceshuttle exerts a force of 2.62×10^4 over atime interval of 4.00 , exhausting a negligible mass of fuelrelative to the shuttle's mass of
9.55×10^4 .
What is the y component of the impulse of the f... | {"url":"http://www.chegg.com/homework-help/questions-and-answers/810-engine-orbital-maneuvering-system-oms-spaceshuttle-exerts-force-262-104-atime-interval-q89493","timestamp":"2014-04-18T02:13:29Z","content_type":null,"content_length":"21357","record_id":"<urn:uuid:093d020e-f2a6-4cae-913f-dab4ff60448d>","cc-path":"CC-... |
A new proof of Cayley’s formula for counting labeled trees
Results 1 - 10 of 11
- J. COMBINATORIAL THEORY A , 1998
"... Various enumerations of labeled trees and forests, including Cayley's formula n n\Gamma2 for the number of trees labeled by [n], and Cayley's multinomial expansion over trees, are derived from
the fol... | {"url":"http://citeseerx.ist.psu.edu/showciting?cid=1435874","timestamp":"2014-04-16T21:58:48Z","content_type":null,"content_length":"37527","record_id":"<urn:uuid:7a05b9b8-5189-416b-8833-9f8663e8f45a>","cc-path":"CC-MAIN-2014-15/segments/1397609525991.2/warc/CC-MAIN-20140416005205-00121-ip-10-147-4-33.ec2.internal.war... |
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Here's the question you clicked on:
A rectangular pyramid and a rectangular prism have bases of th... | {"url":"http://openstudy.com/updates/500da55de4b0ed432e101ae1","timestamp":"2014-04-19T22:53:32Z","content_type":null,"content_length":"45284","record_id":"<urn:uuid:757c7915-a280-46dd-91e4-9202f7f047b9>","cc-path":"CC-MAIN-2014-15/segments/1397609537754.12/warc/CC-MAIN-20140416005217-00278-ip-10-147-4-33.ec2.internal.... |
SI Units
The international system (SI) of units, prefixes, and symbols should be used for all physical quantities except that certain special units, which are specified later, may be used in astronomy,
without risk of confusion or ambiguity, in order to provide a better representation of the phenomena concerned. SI uni... | {"url":"http://iau.org/science/publications/proceedings_rules/units/","timestamp":"2014-04-16T22:02:07Z","content_type":null,"content_length":"71338","record_id":"<urn:uuid:5ff8b64d-43e1-4da6-9df1-3b52bfeb525d>","cc-path":"CC-MAIN-2014-15/segments/1397609525991.2/warc/CC-MAIN-20140416005205-00416-ip-10-147-4-33.ec2.int... |
Off-line compression by greedy textual substitution
Results 1 - 10 of 22
- IEEE TRANSACTIONS ON INFORMATION THEORY , 2005
"... This paper addresses the smallest grammar problem: What is the smallest context-free grammar that generates exactly one given string σ? This is a natural question about a fundamental object
con... | {"url":"http://citeseerx.ist.psu.edu/showciting?cid=483562","timestamp":"2014-04-21T02:40:59Z","content_type":null,"content_length":"39038","record_id":"<urn:uuid:6a1d1a96-f7aa-4425-bd20-9dc85dbe0082>","cc-path":"CC-MAIN-2014-15/segments/1397609539447.23/warc/CC-MAIN-20140416005219-00129-ip-10-147-4-33.ec2.internal.war... |
Context-free grammar
June 27th 2010, 04:04 PM
Context-free grammar
Develop context-free grammars that generate languages:
L1 = {w|w is palindrome in {a,b}^* , w=w^*}
L2 = {ww^* | w is word of {a,b}^*}
My attempt
S -> aSa | bSb | E | a | b
E is empty
Correct ?
2) I could not. Any tips?
Ju... | {"url":"http://mathhelpforum.com/discrete-math/149540-context-free-grammar-print.html","timestamp":"2014-04-17T02:22:17Z","content_type":null,"content_length":"16497","record_id":"<urn:uuid:537ae45c-8d76-43c6-b9ea-e10704414ab4>","cc-path":"CC-MAIN-2014-15/segments/1397609526102.3/warc/CC-MAIN-20140416005206-00283-ip-10... |
CACR Wind Surge
Wind Surge in a Basin
Strong winds on the surface of a body of water will cause the water to pile up against the downwind side, due to the stresses exerted on the water surface. This applet illustrates this effect f... | {"url":"http://coastal.udel.edu/faculty/rad/windsurge.html","timestamp":"2014-04-17T09:47:34Z","content_type":null,"content_length":"5419","record_id":"<urn:uuid:f4ef2287-aa72-474e-8632-f520f9e7d97f>","cc-path":"CC-MAIN-2014-15/segments/1398223210034.18/warc/CC-MAIN-20140423032010-00331-ip-10-147-4-33.ec2.internal.warc... |
Improving consensus structure by eliminating averaging artifacts
• We are sorry, but NCBI web applications do not support your browser and may not function properly.
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BMC Struct Biol. 2009; 9: 12.
Improving consensus structure by eliminating averaging artifacts
Common structural biology methods (i... | {"url":"http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2662860/?tool=pubmed","timestamp":"2014-04-16T23:35:45Z","content_type":null,"content_length":"101764","record_id":"<urn:uuid:63ddd541-2eb6-4c2d-ad04-2a681638cd34>","cc-path":"CC-MAIN-2014-15/segments/1397609525991.2/warc/CC-MAIN-20140416005205-00162-ip-10-147-4-33.ec... |
Calculus and physics ... hahaha
Calculus and physics ... hahaha
Apr 17, 13 3:41 pm
For 4+2s or 5s, physics and calculus are in the curriculum. For M.Arch. 3s, they tell you that you are to take physics and/or calculus prior to the start of the program and you have to provide proof
of completing them. So be it. I did th... | {"url":"http://archinect.com/forum/thread/71421712/calculus-and-physics-hahaha","timestamp":"2014-04-17T13:38:42Z","content_type":null,"content_length":"105036","record_id":"<urn:uuid:0e568ca2-b347-45ea-b2ad-0ec5d7b4263c>","cc-path":"CC-MAIN-2014-15/segments/1398223201753.19/warc/CC-MAIN-20140423032001-00287-ip-10-147-... |
The Works of Archimedes: Translation and Commentary, Volume 1: The Two Books
Archimedes was the most creative, the most powerful, and in many ways the most interesting of the mathematicians of the Ancient World. This is the only available English translation of his work.
Ergo, every library needs a copy of this book. ... | {"url":"http://www.maa.org/publications/maa-reviews/the-works-of-archimedes-translation-and-commentary-volume-1-the-two-books-on-the-sphere-and-the?device=mobile","timestamp":"2014-04-16T04:36:50Z","content_type":null,"content_length":"29787","record_id":"<urn:uuid:a68fefa2-b726-4296-aa3a-702acc59e7ae>","cc-path":"CC-M... |
Properties of DWNs
Next | Prev | Up | Top | JOS Index | JOS Pubs | JOS Home | Search
Each delay element of a DWN can be interpreted precisely as a sampled traveling-wave component in a physical system, unlike the delay elements in ladder and lattice digital filters. Due to the
particular bilinear-transform frequency wa... | {"url":"https://ccrma.stanford.edu/~jos/wgj/Properties_DWNs.html","timestamp":"2014-04-16T17:04:22Z","content_type":null,"content_length":"14824","record_id":"<urn:uuid:3fa48394-7bcd-4786-8e63-fa847dcb80eb>","cc-path":"CC-MAIN-2014-15/segments/1397609524259.30/warc/CC-MAIN-20140416005204-00555-ip-10-147-4-33.ec2.intern... |
Converge or diverge plus show why
January 9th 2012, 07:41 AM
Converge or diverge plus show why
show why the con/diverge:
i think she diverges. because the terms get bigger (closer to 1 each) so you are just adding almost 1 + 1 +1 +1 ... it tails off to infinity... diverge... but i think i need to use a rigurous... | {"url":"http://mathhelpforum.com/differential-geometry/195066-converge-diverge-plus-show-why-print.html","timestamp":"2014-04-16T18:09:35Z","content_type":null,"content_length":"31542","record_id":"<urn:uuid:05183001-0d6a-403e-84ef-e8c0c9554d1d>","cc-path":"CC-MAIN-2014-15/segments/1397609524259.30/warc/CC-MAIN-2014041... |
Compression of Strings with Approximate Repeats
L. Allison, T. Edgoose and T. I. Dix
We describe a model for strings of characters that is loosely based on the Lempel Ziv model with the addition that a repeated substring can be an approximate match to the original substring; this is
close to the situation of DNA, for e... | {"url":"http://www.aaai.org/Library/ISMB/1998/ismb98-002.php","timestamp":"2014-04-21T05:00:29Z","content_type":null,"content_length":"3114","record_id":"<urn:uuid:7d9fbb4b-9eb0-49d0-8c4c-48bd79ced771>","cc-path":"CC-MAIN-2014-15/segments/1398223206120.9/warc/CC-MAIN-20140423032006-00226-ip-10-147-4-33.ec2.internal.war... |
Complex numbers
Determine all complex solutions of the equation z^4 - 4z^2 + 16 = 0 in Cartesian form.
Note that this equation is quadratic in $z^2$. Take $w=z^2$ to turn the equation into $w^2-4w+16=0$. Apply the quadratic formula to get $w=\frac{4\pm\sqrt{16-64}}{2}=\frac{4\pm4\sqrt{3}i}{2}=4\left(\
tfrac{1}{ 2}\pm\t... | {"url":"http://mathhelpforum.com/pre-calculus/123283-complex-numbers.html","timestamp":"2014-04-20T13:48:04Z","content_type":null,"content_length":"34910","record_id":"<urn:uuid:b6a0ab50-0ed1-45cb-aca8-522b66c2432e>","cc-path":"CC-MAIN-2014-15/segments/1397609538787.31/warc/CC-MAIN-20140416005218-00056-ip-10-147-4-33.e... |
Algebra Equations
it is related to simplification of algebraic terms
I am trying to help my student, but have been out of school since 1985. I don't remember how to do this problem.
r+13 over 12=1
club a has the first book free and the rest 8 dollars and club c the first two books cost 10 dollars and the rest 6 dollar... | {"url":"http://www.wyzant.com/resources/answers/algebra_equations?f=active&pagesize=20&pagenum=3","timestamp":"2014-04-21T01:14:38Z","content_type":null,"content_length":"46869","record_id":"<urn:uuid:c0e4c1cc-46c1-4a34-8979-be190e414d87>","cc-path":"CC-MAIN-2014-15/segments/1397609539337.22/warc/CC-MAIN-20140416005219... |
Homework Help
Posted by isha on Sunday, February 28, 2010 at 6:10pm.
find derivative of (8sqrt(x)+(9/2root3(x)))^2
• parentheses required - MathMate, Sunday, February 28, 2010 at 7:13pm
You have not supplied sufficient parentheses to render the expression unambiguous, that probably explains why you get different ... | {"url":"http://www.jiskha.com/display.cgi?id=1267398627","timestamp":"2014-04-20T06:33:00Z","content_type":null,"content_length":"10469","record_id":"<urn:uuid:13a723a0-6947-4084-9693-4ece86b14b75>","cc-path":"CC-MAIN-2014-15/segments/1398223206120.9/warc/CC-MAIN-20140423032006-00107-ip-10-147-4-33.ec2.internal.warc.gz... |
Tailor Your Tables with stargazer: New Features for LaTeX and Text Output
July 15, 2013
By Tal Galili
Guest post by Marek Hlavac
Since its first introduction on this blog, stargazer, a package for turning R statistical output into beautiful LaTeX and ASCII text tables, has made a great deal of progress. Compared to ava... | {"url":"http://www.r-bloggers.com/tailor-your-tables-with-stargazer-new-features-for-latex-and-text-output/","timestamp":"2014-04-18T05:37:10Z","content_type":null,"content_length":"50492","record_id":"<urn:uuid:de8d5b04-b613-4a9d-be7c-0a2c32f9f011>","cc-path":"CC-MAIN-2014-15/segments/1397609532573.41/warc/CC-MAIN-201... |
Statistics help
October 24th 2012, 07:45 PM #1
Oct 2012
Chapel Hill, NC
Statistics help
I cannot get this problem for the life of me. I've been working on it for at least an hour and have produced no work.
It is known that the incomes of subscribers to a particular magazine have a normal distribution wi... | {"url":"http://mathhelpforum.com/statistics/206041-statistics-help.html","timestamp":"2014-04-19T10:17:43Z","content_type":null,"content_length":"39254","record_id":"<urn:uuid:9a1932dd-7d98-499a-94b8-7034d486cc2e>","cc-path":"CC-MAIN-2014-15/segments/1397609537097.26/warc/CC-MAIN-20140416005217-00415-ip-10-147-4-33.ec2... |
Most General Lossless Feedback Matrices
Next | Prev | Up | Top | Index | JOS Index | JOS Pubs | JOS Home | Search
As shown in §C.15.3, an FDN feedback matrix eigenvalues have modulus 1 and its eigenvectors are linearly independent.
where Hermitian conjugate (i.e., the complex-conjugate transpose) of orthogonal matrix, ... | {"url":"https://ccrma.stanford.edu/~jos/pasp/Most_General_Lossless_Feedback.html","timestamp":"2014-04-19T12:05:36Z","content_type":null,"content_length":"9304","record_id":"<urn:uuid:7e4ecb55-b291-4370-91d9-11e52f1f51af>","cc-path":"CC-MAIN-2014-15/segments/1397609537186.46/warc/CC-MAIN-20140416005217-00396-ip-10-147-... |
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Seminar Projects Performed (1986-1990)
Recent Projects | Past Projects : 2006-2010 | 2001-2005 | 1996-2000 | 1991-1995 | 1986-1990 | 1981-1985 | 1976-1980
Session Year Student Advisor ... | {"url":"http://www.millersville.edu/physics/seminars/projects86-90.php","timestamp":"2014-04-17T18:42:23Z","content_type":null,"content_length":"29208","record_id":"<urn:uuid:19e56b02-8ce0-411c-a5bd-85650a06d113>","cc-path":"CC-MAIN-2014-15/segments/1398223203841.5/warc/CC-MAIN-20140423032003-00560-ip-10-147-4-33.ec2.i... |
Amortization Schedules and Principal Prepayment, Part 1: Shortening a 30-Year Mortgage Into 15
I’ve been tinkering around with my mortgage. Have you ever wondered how the monthly payment was determined? It’s called amortization. An amortization schedule is a way to make equal payments over a
period of time, but have th... | {"url":"http://www.mymoneyblog.com/amortization-schedules-and-principal-prepayment-part-1-shortening-a-30-year-mortgage-into-15.html","timestamp":"2014-04-18T13:26:33Z","content_type":null,"content_length":"106271","record_id":"<urn:uuid:cfcc0ee6-458a-4c96-9b88-daba2014ba02>","cc-path":"CC-MAIN-2014-15/segments/1397609... |
[Maxima] problem solving radical equations
Barton Willis willisb at unk.edu
Mon Jan 29 08:35:36 CST 2007
maxima-bounces at math.utexas.edu wrote on 01/29/2007 05:07:22 AM:
> Trying to solve a system of equations with radicals, i get an error
> (%i1) solve([x+3*y=5,sqrt(x+y)-1=y]);
> `algsys' cannot solve - system too ... | {"url":"http://www.ma.utexas.edu/pipermail/maxima/2007/004970.html","timestamp":"2014-04-20T08:34:34Z","content_type":null,"content_length":"3730","record_id":"<urn:uuid:2fa86937-ceb6-4d92-907d-336087c22014>","cc-path":"CC-MAIN-2014-15/segments/1397609538110.1/warc/CC-MAIN-20140416005218-00554-ip-10-147-4-33.ec2.intern... |
£299.99 in dollars
You asked:
£299.99 in dollars
Say hello to Evi
Evi is our best selling mobile app that can answer questions about local knowledge, weather, books, music, films, people and places, recipe ideas, shopping and much more. Over the next few months we
will be adding all of Evi's power to this site.
Until t... | {"url":"http://www.evi.com/q/%C2%A3299.99_in_dollars","timestamp":"2014-04-18T04:09:57Z","content_type":null,"content_length":"56466","record_id":"<urn:uuid:96693bbd-8adb-46d9-b1f0-86baeeddadc8>","cc-path":"CC-MAIN-2014-15/segments/1397609532480.36/warc/CC-MAIN-20140416005212-00643-ip-10-147-4-33.ec2.internal.warc.gz"} |
On the Low Wave Number Behavior of Two-Dimensional Scattering Problems for an Open Arc
R. Kress
R. Kress: Inst. für Num. und Ang. Math. der Univ., Lotzestr. 16-18, D - 37083 Göttingen
Abstract: The low wave number asymptotics for the solution of the Dirichlet problem for the two-dimensional Helmholtz equation in the ex... | {"url":"http://www.emis.de/journals/ZAA/1802/9.html","timestamp":"2014-04-20T03:21:55Z","content_type":null,"content_length":"3709","record_id":"<urn:uuid:975f9473-29cc-4202-9d8e-019e33823279>","cc-path":"CC-MAIN-2014-15/segments/1397609537864.21/warc/CC-MAIN-20140416005217-00024-ip-10-147-4-33.ec2.internal.warc.gz"} |
AcceleRate Financial
Calculators Calculators
Projected Value of a
Deposit Deposits Needed for a Future Sum
Projected Value of a
Series of Deposits The "deposit needed for a future sum" simulation will calculate the deposit amount you need to make in order to reach a specified future sum.... | {"url":"http://www.acceleratefinancial.ca/rates/calculators/deposit_futureSum.aspx","timestamp":"2014-04-18T18:12:40Z","content_type":null,"content_length":"18696","record_id":"<urn:uuid:af2e5195-5867-4856-a375-7959f59b4ffd>","cc-path":"CC-MAIN-2014-15/segments/1397609535095.7/warc/CC-MAIN-20140416005215-00274-ip-10-14... |
You may discuss homework problems with other students, but you have to prepare the written assignments yourself. Late homework will be penalized 10% per day.
Please combine all your answers, the computer code and the figures into one file, and submit a copy to your dropbox folder.
Grading scheme: 10 points per question... | {"url":"http://nbviewer.ipython.org/url/www.stanford.edu/class/stats191/notebooks/Assignment1.ipynb","timestamp":"2014-04-17T01:44:10Z","content_type":null,"content_length":"15246","record_id":"<urn:uuid:97b24a22-ff51-411b-b384-bf856e8f208d>","cc-path":"CC-MAIN-2014-15/segments/1398223202548.14/warc/CC-MAIN-20140423032... |
Area of a region
June 25th 2009, 03:52 PM
Area of a region
Hey all,
so i want the area in grey like the image shows, calculating it with a double integral, in polar coordinates.
So for the lower half i put:
r = [-2sin theta , 2cos theta]
theta = [-pi/4 , 0]
for the upper half its almost the same... | {"url":"http://mathhelpforum.com/calculus/93737-area-region-print.html","timestamp":"2014-04-16T06:14:37Z","content_type":null,"content_length":"6577","record_id":"<urn:uuid:6dfe6f75-f18f-4c6e-b70e-4f85031edba6>","cc-path":"CC-MAIN-2014-15/segments/1397609521512.15/warc/CC-MAIN-20140416005201-00449-ip-10-147-4-33.ec2.i... |
Please Help
a and b are ints, so a/b is rounded down to 0. Make them float or double or add a cast sum = float(a)/b;
i jsut tried that
if i enter the number of terms n to be odd
the output screen shows the sum = 0.22222
and if i enter the number of terms to be even
then the output screen shows= 0.162393
which is the su... | {"url":"http://www.cplusplus.com/forum/general/62316/","timestamp":"2014-04-21T07:25:55Z","content_type":null,"content_length":"9916","record_id":"<urn:uuid:b888a3b4-3aab-4c37-a485-9cc388aff330>","cc-path":"CC-MAIN-2014-15/segments/1397609539665.16/warc/CC-MAIN-20140416005219-00141-ip-10-147-4-33.ec2.internal.warc.gz"} |
This web site contains executable versions of test problem included in the book C.A.Floudas, P.M. Pardalos et al. "Handbook of Test Problems in Local and Global Optimization" published by Kluwer
Academic Publishers and in the book C.A. Floudas, P.M.Pardalos "A Collection of Test Problems for Constrained Global Optimiza... | {"url":"http://www.mat.univie.ac.at/~oleg/ampl_titan.htm","timestamp":"2014-04-16T19:26:12Z","content_type":null,"content_length":"6369","record_id":"<urn:uuid:85a1e46c-d517-4c56-a945-481c6a864617>","cc-path":"CC-MAIN-2014-15/segments/1397609524644.38/warc/CC-MAIN-20140416005204-00144-ip-10-147-4-33.ec2.internal.warc.g... |
okay, so when i press my mc (random1) i would like it to go to a random frame (but only random between frames2, 18, and 24) for different maps in my game.
This is the formula i have right now but it doesnt work, (the formula works to go to any frame tho with a frame number where () is and not (math.random) and not sure... | {"url":"http://www.actionscript.org/forums/showthread.php3?p=1081536","timestamp":"2014-04-19T06:55:34Z","content_type":null,"content_length":"81882","record_id":"<urn:uuid:017cd4b5-7f03-4f06-9edd-fa54caee1128>","cc-path":"CC-MAIN-2014-15/segments/1398223202548.14/warc/CC-MAIN-20140423032002-00137-ip-10-147-4-33.ec2.in... |
Reference for complexity of primitive polynomials
MathOverflow is a question and answer site for professional mathematicians. It's 100% free, no registration required.
What is the fastest known way to check if a given polynomial of degree $n$ in $F_{2}[X]$ is primitive?
... | {"url":"http://mathoverflow.net/questions/81084/reference-for-complexity-of-primitive-polynomials","timestamp":"2014-04-18T00:48:41Z","content_type":null,"content_length":"52634","record_id":"<urn:uuid:f62fe818-ab19-409f-b253-b4b1a457059a>","cc-path":"CC-MAIN-2014-15/segments/1397609532374.24/warc/CC-MAIN-2014041600521... |
Fast and Automatic Ultrasound Simulation from CT Images
Computational and Mathematical Methods in Medicine
Volume 2013 (2013), Article ID 327613, 13 pages
Research Article
Fast and Automatic Ultrasound Simulation from CT Images
Key Laboratory of Photoelectronic Imaging Technology and System of Ministry of Education of ... | {"url":"http://www.hindawi.com/journals/cmmm/2013/327613/","timestamp":"2014-04-17T17:00:16Z","content_type":null,"content_length":"262588","record_id":"<urn:uuid:34a698bc-602c-42c9-9702-4e70dc8f1d9c>","cc-path":"CC-MAIN-2014-15/segments/1397609538787.31/warc/CC-MAIN-20140416005218-00258-ip-10-147-4-33.ec2.internal.war... |
Does this series converge (1 - (log n)/n)^n
December 6th 2012, 09:16 AM
Re: Does this series converge (1 - (log n)/n)^n
Hmm.. How about this..
Take as a given that
$\left\{1 - \frac{\log n}{n}\right\}$
is an increasing sequence with
$\lim_{n \to \infty} \left(1 - \frac{\log n}{n}\right) = 1$
. (... | {"url":"http://mathhelpforum.com/differential-geometry/209143-does-series-converge-1-log-n-n-n-2-print.html","timestamp":"2014-04-21T07:41:56Z","content_type":null,"content_length":"10174","record_id":"<urn:uuid:9b3cc087-7f6a-47e8-b348-737404493df1>","cc-path":"CC-MAIN-2014-15/segments/1397609539665.16/warc/CC-MAIN-201... |
What methods exist to prove that a finitely presented group is finite?
up vote 15 down vote favorite
Suppose I have a finitely presented group (or a family of finitely presented groups with some integer parameters), and I'd like to know if the group is finite. What methods exist to find this out? I
know that there isn'... | {"url":"http://mathoverflow.net/questions/7721/what-methods-exist-to-prove-that-a-finitely-presented-group-is-finite?sort=votes","timestamp":"2014-04-20T08:57:51Z","content_type":null,"content_length":"88843","record_id":"<urn:uuid:3ed7c005-1197-4fee-9b6a-4adc6aa662ab>","cc-path":"CC-MAIN-2014-15/segments/1397609538110... |
Increasing And Decreasing Function In Calculus
Sponsored High Speed Downloads
3.3 Increasing & Decreasing Functions and the 1st Derivative Test Calculus Home Page Problems for 3.3 Title: intro (1 of 10)
3.3 Increasing and Decreasing Functions and the First Derivative Test Calculus Guidelines for Finding Intervals on W... | {"url":"http://ebookily.org/pdf/increasing-and-decreasing-function-in-calculus","timestamp":"2014-04-23T14:50:41Z","content_type":null,"content_length":"44328","record_id":"<urn:uuid:79258a02-69b1-4bef-9869-e93a7634859d>","cc-path":"CC-MAIN-2014-15/segments/1398223206770.7/warc/CC-MAIN-20140423032006-00152-ip-10-147-4-... |
Deriving Moment of Inetia using just linear dynamics
Yes, If you consider a mass being accelerated and rotates in a circle.
Then the acceleration is:
multiply both sides by r:
where [itex]\alpha[/itex] is the angular acceleration.
Take this sum of all masses:
[itex]\sum r^{2}dm[/itex]
Or another way:
The force on a sma... | {"url":"http://www.physicsforums.com/showthread.php?p=4258123","timestamp":"2014-04-20T23:41:14Z","content_type":null,"content_length":"23059","record_id":"<urn:uuid:ae6fab83-88fe-4e11-b2b4-2814730d8d89>","cc-path":"CC-MAIN-2014-15/segments/1397609539337.22/warc/CC-MAIN-20140416005219-00025-ip-10-147-4-33.ec2.internal.... |
GED Preparation
A new section of each course starts monthly. If enrolling in a series of two or more courses, please be sure to space the start date for each course at least two months apart.
Week 1
Wednesday - Lesson 01
How many subjects does the GED® test cover, and how much time do you get for each part of the test?... | {"url":"http://www.ed2go.com/online-courses/ged-preparation?site=bcccbii&tab=syllabus","timestamp":"2014-04-17T01:51:07Z","content_type":null,"content_length":"40823","record_id":"<urn:uuid:b1f01374-c35c-4f28-bd4a-64a2347343d2>","cc-path":"CC-MAIN-2014-15/segments/1397609526102.3/warc/CC-MAIN-20140416005206-00609-ip-10... |
Matches for:
Geometry has been an essential element in the study of mathematics since antiquity. Traditionally, we have also learned formal reasoning by studying Euclidean geometry. In this book, David Clark
develops a modern axiomatic approach to this ancient subject, both in content and presentation.
Mathematically, ... | {"url":"http://cust-serv@ams.org/bookstore?fn=20&arg1=mclseries&ikey=MCL-9","timestamp":"2014-04-16T13:36:53Z","content_type":null,"content_length":"17379","record_id":"<urn:uuid:05dc3774-2cb0-48d4-85a0-32e6c43952c0>","cc-path":"CC-MAIN-2014-15/segments/1397609523429.20/warc/CC-MAIN-20140416005203-00377-ip-10-147-4-33.... |
Posts by
Total # Posts: 43
paula bought a ski jacket on sale for $6 less than half its original price she paid $88 for the jacket. What was the original price
Tickets to a school play were $5 for adults and $3 for students. A total of 247 tickets were sold for a profit of $1000. How many adult tickets an student ticke... | {"url":"http://www.jiskha.com/members/profile/posts.cgi?name=kenzie","timestamp":"2014-04-16T08:28:25Z","content_type":null,"content_length":"13019","record_id":"<urn:uuid:ba84fd70-a41a-4650-9046-c3ca66fa0f10>","cc-path":"CC-MAIN-2014-15/segments/1397609521558.37/warc/CC-MAIN-20140416005201-00071-ip-10-147-4-33.ec2.int... |
A sample revised prelude for numeric classes
Dylan Thurston dpt@math.harvard.edu
Sun, 11 Feb 2001 22:27:53 -0500
Thanks for the comments!
On Mon, Feb 12, 2001 at 12:26:35AM +0000, Marcin 'Qrczak' Kowalczyk wrote:
> I don't like the fact that there is no Powerful Integer Integer.
Reading this, it occurred to me that you... | {"url":"http://www.haskell.org/pipermail/haskell-cafe/2001-February/001584.html","timestamp":"2014-04-19T18:39:24Z","content_type":null,"content_length":"4889","record_id":"<urn:uuid:4257a2d3-c1f4-4b81-9066-bf1e23353711>","cc-path":"CC-MAIN-2014-15/segments/1397609537308.32/warc/CC-MAIN-20140416005217-00154-ip-10-147-4... |
Calculus/Polar Integration
Integrating a polar equation requires a different approach than integration under the Cartesian system, hence yielding a different formula, which is not as straightforward as integrating the function
In creating the concept of integration, we used Riemann sums of rectangles to approximate the... | {"url":"http://en.m.wikibooks.org/wiki/Calculus/Polar_Integration","timestamp":"2014-04-20T08:25:45Z","content_type":null,"content_length":"26961","record_id":"<urn:uuid:146da40a-bd03-49f8-bca8-8d5346bec536>","cc-path":"CC-MAIN-2014-15/segments/1398223205137.4/warc/CC-MAIN-20140423032005-00425-ip-10-147-4-33.ec2.intern... |
Compound inequality
A compound inequality is a statement in which two inequalities are connected by the word "and" or the word "or".
For example, x > 5 and x ≤ 7 and x ≤ -1 or x > 7 are examples of compound inequalities
When the word that connects both inequalities is "and", the solution is any number that makes both i... | {"url":"http://www.basic-mathematics.com/compound-inequality.html","timestamp":"2014-04-21T02:33:22Z","content_type":null,"content_length":"34661","record_id":"<urn:uuid:1aa0c55e-6577-4699-aaf1-9b2d0253c5ce>","cc-path":"CC-MAIN-2014-15/segments/1397609539447.23/warc/CC-MAIN-20140416005219-00285-ip-10-147-4-33.ec2.inter... |
Marin Mersenne
Marin Mersenne was a French theologian who was also an accomplished amateur mathematician, scientist, and philosopher. He is best known for two things. First, his name has been attached to a class of
prime numbers called Mersenne primes. Second, he was indirectly responsible for many scientific achieveme... | {"url":"http://everything2.com/title/Marin+Mersenne?showwidget=showCs1359377","timestamp":"2014-04-16T20:00:06Z","content_type":null,"content_length":"35303","record_id":"<urn:uuid:b10ca361-48d2-4fff-87be-3054c5d294e8>","cc-path":"CC-MAIN-2014-15/segments/1397609524644.38/warc/CC-MAIN-20140416005204-00053-ip-10-147-4-3... |
Largest numb, smallest num with sentinal
K I am getting one error in my code that just wont let me finish the program. So I am supposed to write a program with 3 choices, A,B,C. A print the largest number out of a defined set of numbers
entered by the user, B print the smallest number using a sentinal loop to exit the ... | {"url":"http://www.cplusplus.com/forum/beginner/1813/","timestamp":"2014-04-19T04:21:56Z","content_type":null,"content_length":"15812","record_id":"<urn:uuid:4d3a06c7-5fa2-4bf3-9ca9-fc6a55b67b7f>","cc-path":"CC-MAIN-2014-15/segments/1397609535775.35/warc/CC-MAIN-20140416005215-00660-ip-10-147-4-33.ec2.internal.warc.gz"... |
Fairview, NJ Algebra 1 Tutor
Find a Fairview, NJ Algebra 1 Tutor
...I'm currently in a Virology course at Columbia that has a large focus on the molecular level, mostly pertaining to the genomes of various viruses. I have worked in a service-based IT department
for the past four years. We focus on software support ... | {"url":"http://www.purplemath.com/fairview_nj_algebra_1_tutors.php","timestamp":"2014-04-16T04:49:52Z","content_type":null,"content_length":"24292","record_id":"<urn:uuid:43ce252b-d3a3-4ae5-b41e-ae986717c73e>","cc-path":"CC-MAIN-2014-15/segments/1397609521512.15/warc/CC-MAIN-20140416005201-00161-ip-10-147-4-33.ec2.inte... |
How to Stay Solvent Longer Than the Market Can Stay Irrational
COMMENTS (14 to date)
Latest Comment
This just turns out to be a hedge instead of a unique strategy, b/c you have to do something with the balance of your assets
August 28, 2009 10:38 AM
Isn't this a more conservative variant of Taleb's Black Swan story? He... | {"url":"http://econlog.econlib.org/archives/2009/08/how_to_stay_sol.html","timestamp":"2014-04-19T22:20:11Z","content_type":null,"content_length":"43571","record_id":"<urn:uuid:6da5e6a5-fb49-44fd-b226-8f22d367d175>","cc-path":"CC-MAIN-2014-15/segments/1398223203841.5/warc/CC-MAIN-20140423032003-00638-ip-10-147-4-33.ec2... |
Power Tip 57: Design a flyback primary switch snubber | EE Times
Power Tips
Power Tip 57: Design a flyback primary switch snubber
How to best control the voltage stress on the primary switch in a single-ended flyback converter (shown in Figure 1) is a multi-faceted problem. You have to solve a combination of technical ... | {"url":"http://www.eetimes.com/author.asp?section_id=183&doc_id=1280601","timestamp":"2014-04-17T04:05:16Z","content_type":null,"content_length":"132987","record_id":"<urn:uuid:0484e36c-3e97-4a9e-8a44-41429d1a4992>","cc-path":"CC-MAIN-2014-15/segments/1397609526311.33/warc/CC-MAIN-20140416005206-00183-ip-10-147-4-33.ec... |
Find Cells That Sum Up To Given Values
I have a coloumn (i.e. A) with hundreds of numbers. I'd like to be able to write a number in a cell (i.e. B4), and have Excel find and tell the coordinates of those cells in coloumn A that sum up to
the result I wrote in B4. I also would like to be able to "hit a key" and see the ... | {"url":"http://excel.bigresource.com/Find-Cells-That-Sum-up-to-Given-Values-DLYcEsZ0.html","timestamp":"2014-04-16T19:07:23Z","content_type":null,"content_length":"77710","record_id":"<urn:uuid:f2f4d8ca-ca0e-414d-9214-f78b4543a106>","cc-path":"CC-MAIN-2014-15/segments/1397609524644.38/warc/CC-MAIN-20140416005204-00502-... |
Converting a Polar Equation to Rectangular
April 5th 2011, 08:29 AM
Converting a Polar Equation to Rectangular
Hello, I do need help with a particular problem in my homework.
The problem is theta = 4pi/3.
I need to convert this equation to a rectangular equation.
I get so antsy seeing theta = instead of... | {"url":"http://mathhelpforum.com/pre-calculus/176898-converting-polar-equation-rectangular-print.html","timestamp":"2014-04-23T12:21:09Z","content_type":null,"content_length":"7562","record_id":"<urn:uuid:1da4787f-5f1d-447b-9ba1-a23aaf1374f3>","cc-path":"CC-MAIN-2014-15/segments/1398223202548.14/warc/CC-MAIN-2014042303... |