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Math Tools Discussion: All Topics in Geometry, Smartboard and Geometric Constructions
Discussion: All Topics in Geometry
Topic: Smartboard and Geometric Constructions
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Subject: RE: Smartboard and Geometric Constructions
Author: ihor
Date: A... | {"url":"http://mathforum.org/mathtools/discuss.html?context=cell&do=r&msg=26007","timestamp":"2014-04-21T15:52:31Z","content_type":null,"content_length":"16323","record_id":"<urn:uuid:a558684f-e3a0-4138-b75f-f65b14448435>","cc-path":"CC-MAIN-2014-15/segments/1398223207046.13/warc/CC-MAIN-20140423032007-00158-ip-10-147-... |
Longest Math Proof in History Completed | RCScience
September 12, 2011
Longest Math Proof in History Completed
Esther Inglis-Arkell, io9
AP Photo
The longest math proof in the world has just been completed. It began in the 1970s and was worked on by 100 mathematicians. Take a look at the math equivalent of endurance ... | {"url":"http://www.realclearscience.com/2011/09/12/longest_math_proof_in_history_completed_243025.html","timestamp":"2014-04-17T21:35:46Z","content_type":null,"content_length":"20049","record_id":"<urn:uuid:2065bfc9-1961-4943-a37a-c0bab99ec1cf>","cc-path":"CC-MAIN-2014-15/segments/1398223207046.13/warc/CC-MAIN-20140423... |
[R] searching through a matrix
Spencer Graves spencer.graves at pdf.com
Mon Feb 28 00:53:47 CET 2005
Does the following solve your problem:
is.na(array(c(NA, 1:5), dim=c(2,3)))
[,1] [,2] [,3]
[1,] TRUE FALSE FALSE
[2,] FALSE FALSE FALSE
spencer graves
Jessica Higgs wrote:
> I am trying to search t... | {"url":"https://stat.ethz.ch/pipermail/r-help/2005-February/066854.html","timestamp":"2014-04-18T20:52:18Z","content_type":null,"content_length":"4035","record_id":"<urn:uuid:241d58ca-e215-4cf9-8292-81ea69e40ba1>","cc-path":"CC-MAIN-2014-15/segments/1398223205375.6/warc/CC-MAIN-20140423032005-00023-ip-10-147-4-33.ec2.i... |
22-XX Topological groups, Lie groups {For transformation groups, see 54H15, 57Sxx, 58-XX. For abstract harmonic analysis, see 43-XX}
22-00 General reference works (handbooks, dictionaries, bibliographies, etc.)
22-01 Instructional exposition (textbooks, tutorial papers, etc.)
... | {"url":"http://www.ams.org/mathscinet/msc/msc2010.html?t=22-XX","timestamp":"2014-04-16T14:18:19Z","content_type":null,"content_length":"14034","record_id":"<urn:uuid:9e54ac64-398f-46b4-9bad-afa7fbf93888>","cc-path":"CC-MAIN-2014-15/segments/1397609523429.20/warc/CC-MAIN-20140416005203-00343-ip-10-147-4-33.ec2.internal... |
Exercise 2.73
Section 2.3.2 described a program that performs symbolic differentiation:
(define (deriv exp var)
(cond ((number? exp) 0)
((variable? exp) (if (same-variable? exp var) 1 0))
((sum? exp)
(make-sum (deriv (addend exp) var)
(deriv (augend exp) var)))
((... | {"url":"http://sicpinclojure.com/?q=exercise/exercise-2-73","timestamp":"2014-04-18T15:47:24Z","content_type":null,"content_length":"36274","record_id":"<urn:uuid:c241c16b-687b-4268-aa4c-78892ceacd44>","cc-path":"CC-MAIN-2014-15/segments/1397609533957.14/warc/CC-MAIN-20140416005213-00311-ip-10-147-4-33.ec2.internal.war... |
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Sara Santos busking on the streets of Krakow.
The 6th European Congress of Mathematics, which took place in Krakow at the beginning of July, wasn't just about mathematicians talking to each other. On the streets of Krakow maths buskers were
entertaining the public, handcuffing innocent Krakowians, cons... | {"url":"http://plus.maths.org/content/comment/reply/5729","timestamp":"2014-04-18T21:29:13Z","content_type":null,"content_length":"21673","record_id":"<urn:uuid:84624380-b2f6-43bb-b5ce-b3bb84628ea6>","cc-path":"CC-MAIN-2014-15/segments/1397609535095.9/warc/CC-MAIN-20140416005215-00477-ip-10-147-4-33.ec2.internal.warc.g... |
How much is alpha?
Hello ! We have a square - find alpha ?
There is not enough information to answer. There must be more given. What else do you know?
Rotate triangle AEB about B, until A rests on C. Label the new position of "E" as "G". Draw a line from E to G. Angle EBG is 90 degrees. Angles BEG and BGE are 45 degree... | {"url":"http://mathhelpforum.com/geometry/183276-how-much-alpha-print.html","timestamp":"2014-04-19T21:50:34Z","content_type":null,"content_length":"6251","record_id":"<urn:uuid:eb317cdd-e8c5-4ceb-8d2d-a43668b26b90>","cc-path":"CC-MAIN-2014-15/segments/1397609537376.43/warc/CC-MAIN-20140416005217-00406-ip-10-147-4-33.e... |
Large-scale optimization of eigenvalues
Results 1 - 10 of 75
- SIAM REVIEW , 1996
"... ..."
- IEEE TRANSACTIONS ON INFORMATION THEORY , 2006
"... Motivated by applications to sensor, peer-to-peer, and ad hoc networks, we study distributed algorithms, also known as gossip algorithms, for exchanging information and for c... | {"url":"http://citeseerx.ist.psu.edu/showciting?cid=215212","timestamp":"2014-04-18T00:52:43Z","content_type":null,"content_length":"37998","record_id":"<urn:uuid:4e38a709-2aa2-48f7-a32c-45c115e46bbf>","cc-path":"CC-MAIN-2014-15/segments/1397609532374.24/warc/CC-MAIN-20140416005212-00036-ip-10-147-4-33.ec2.internal.war... |
Irvington, NJ Algebra 1 Tutor
Find a Irvington, NJ Algebra 1 Tutor
...I began tutoring students in high school, and my students have generally shown a significant improvement in their grades. I excel in one-on-one tutoring sessions, and am a very patient and
understanding tutor. I am capable of tutoring students (r... | {"url":"http://www.purplemath.com/Irvington_NJ_algebra_1_tutors.php","timestamp":"2014-04-16T19:44:54Z","content_type":null,"content_length":"24183","record_id":"<urn:uuid:05ac9fcb-59b6-4287-95ba-a7e9aa80104e>","cc-path":"CC-MAIN-2014-15/segments/1397609524644.38/warc/CC-MAIN-20140416005204-00566-ip-10-147-4-33.ec2.int... |
Estimate the sound level in decibels you would expect at a point 8.0 from a loudspeaker connected in turn to each amp
Number of results: 92,964
Expensive amplifier A is rated at 250 W, while the more modest amplifier B is rated at 45 W. (a) Estimate the sound level in decibels you would expect at a point 3.5 m from a l... | {"url":"http://www.jiskha.com/search/index.cgi?query=Estimate+the+sound+level+in+decibels+you+would+expect+at+a+point+8.0+from+a+loudspeaker+connected+in+turn+to+each+amp","timestamp":"2014-04-19T20:42:04Z","content_type":null,"content_length":"44109","record_id":"<urn:uuid:293c3d12-cf9d-49e0-91d2-078af4389c53>","cc-pa... |
2.49 Euro is how much us dollars
You asked:
2.49 Euro is how much us 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... | {"url":"http://www.evi.com/q/2.49_euro_is_how_much_us_dollars","timestamp":"2014-04-20T19:01:49Z","content_type":null,"content_length":"55141","record_id":"<urn:uuid:686173f5-8204-4a65-9b31-12d37685f098>","cc-path":"CC-MAIN-2014-15/segments/1397609539066.13/warc/CC-MAIN-20140416005219-00298-ip-10-147-4-33.ec2.internal.... |
Stochastic Differential Equations with Multi-Markovian Switching
Journal of Applied Mathematics
Volume 2013 (2013), Article ID 357869, 11 pages
Research Article
Stochastic Differential Equations with Multi-Markovian Switching
^1School of Mathematical Science, Huaiyin Normal University, Huai'an 223300, China
^2Departmen... | {"url":"http://www.hindawi.com/journals/jam/2013/357869/","timestamp":"2014-04-16T16:24:26Z","content_type":null,"content_length":"1047227","record_id":"<urn:uuid:5f27cde5-16c2-4f3f-b807-90ea9e02a863>","cc-path":"CC-MAIN-2014-15/segments/1397609524259.30/warc/CC-MAIN-20140416005204-00038-ip-10-147-4-33.ec2.internal.war... |
The Father of Algebra
Math brain teasers require computations to solve.
Category: Math
Submitted By: buddyboy
Diophantus was a Greek mathematician who lived in the third century. He was one of the first mathematicians to use algebraic symbols.
Most of what is known about Diophantus's life comes from an algebraic ... | {"url":"http://www.braingle.com/wii/brainteasers/teaser.php?id=35386","timestamp":"2014-04-17T03:55:45Z","content_type":null,"content_length":"9853","record_id":"<urn:uuid:97335751-cad7-4f45-a7ce-57990a33014a>","cc-path":"CC-MAIN-2014-15/segments/1397609526252.40/warc/CC-MAIN-20140416005206-00130-ip-10-147-4-33.ec2.int... |
Angular Momentum
Considering a Rigid Body/Angular Momentum/Torque
We know that Torque(ext) = dL/dt
Now with respect to stationary point S:
L(s, cm) = Ʃ(ρi x mivi)
and that dL(cm)/dt = Ʃτ(ext, CM)
Now with respect to ANY point, P, that is accelerating:
L(s,p) = L(cm) + ρ(cm) x Mv(cm)
And hence,
Ʃτ(ext, p) = dL(rel_p)/dt... | {"url":"http://www.physicsforums.com/showthread.php?p=3897969","timestamp":"2014-04-18T08:30:44Z","content_type":null,"content_length":"22805","record_id":"<urn:uuid:52767818-761f-4d55-9592-b4b03d4df234>","cc-path":"CC-MAIN-2014-15/segments/1398223203422.8/warc/CC-MAIN-20140423032003-00441-ip-10-147-4-33.ec2.internal.w... |
Ray Tracing with GLSL - Some Doubts
Hello All,
I am trying to develop a basic Ray Tracer. So far i have calculated intersection with a plane and blinn-phong shading.i am working on a 500*500 window and my primary ray generation code is as follows
vec3 rayDirection = vec3( gl_FragCoord.x-250.0,gl_FragCoord.y-250.0 , ... | {"url":"http://devmaster.net/posts/20708/ray-tracing-with-glsl-some-doubts","timestamp":"2014-04-21T02:53:43Z","content_type":null,"content_length":"19495","record_id":"<urn:uuid:6c1213ab-71c0-4ac5-bb20-46a25b8e41a1>","cc-path":"CC-MAIN-2014-15/segments/1398223206672.15/warc/CC-MAIN-20140423032006-00502-ip-10-147-4-33.... |
Matthew van Eerde's web log
23 Comments
A body that moves in a circular motion (of radius r) at constant speed (v) is always being accelerated. The acceleration is at right angles to the direction of motion (towards the center of the
circle) and of magnitude v^2 / r.
The direction of acceleration is deduced by symmetry... | {"url":"http://blogs.msdn.com/b/matthew_van_eerde/archive/2010/01.aspx?PostSortBy=MostViewed&PageIndex=1","timestamp":"2014-04-17T16:42:32Z","content_type":null,"content_length":"60733","record_id":"<urn:uuid:a2f5583b-0d4e-45cc-a274-d8c86eaddf36>","cc-path":"CC-MAIN-2014-15/segments/1397609530136.5/warc/CC-MAIN-2014041... |
Evesham Twp, NJ Science Tutor
Find an Evesham Twp, NJ Science Tutor
...I would happy to share that knowledge and experience to help someone pass the math section of the ACT test. I have a bachelor's degree in mathematics. I have taken courses dealing with linear
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Wolfram Demonstrations Project
Illustrating the Law of Large Numbers
The law of large numbers states (informally) that as the number of independent observations drawn from a population with finite mean increases, the mean of those observed values approaches . This
Demonstration illustrates that behavior by plotting the... | {"url":"http://demonstrations.wolfram.com/IllustratingTheLawOfLargeNumbers/","timestamp":"2014-04-20T15:54:56Z","content_type":null,"content_length":"43402","record_id":"<urn:uuid:d252318d-4c3c-4939-9081-0c4c248b45fb>","cc-path":"CC-MAIN-2014-15/segments/1397609538824.34/warc/CC-MAIN-20140416005218-00021-ip-10-147-4-33... |
Survival Statistic Tab
On the Statistic tab in a Survival session, you must choose one of the following survival measures to calculate survival. If you are unsure of the appropriate survival measure to use for your
analysis, see Determining the Appropriate Cancer Survival Measure.
Choose between the Actuarial and Kapla... | {"url":"http://seer.cancer.gov/seerstat/508_WebHelp/Survival_Statistic_Tab.htm","timestamp":"2014-04-16T04:11:43Z","content_type":null,"content_length":"7829","record_id":"<urn:uuid:93922a7b-3021-4e46-8862-b0bb85287a20>","cc-path":"CC-MAIN-2014-15/segments/1397609521512.15/warc/CC-MAIN-20140416005201-00095-ip-10-147-4-... |
Getting residuals to a vector
up vote 3 down vote favorite
Anybody knows how to get the residuals created by the following matlab code to a vector 'A' ?
I tried to get the residuals by typing r at the command prompt but did not get the residuals
a0 = 0.05; a1 = 0.1; b1 = 0.85;
nu = randn(2300,1);
epsi = zeros(2300,1);
... | {"url":"http://stackoverflow.com/questions/14995178/getting-residuals-to-a-vector/14995728","timestamp":"2014-04-19T03:48:08Z","content_type":null,"content_length":"68919","record_id":"<urn:uuid:439ac4d8-a31b-4611-b1d5-fd2ac872471a>","cc-path":"CC-MAIN-2014-15/segments/1397609535745.0/warc/CC-MAIN-20140416005215-00291-... |
Guide to Non-linear Dynamics in Accelerator Physics/Tracking
From Wikibooks, open books for an open world
This chapter provides tools to describe tools for finding map that track particles in em fields.
There are several way of tracking a particle in accelerator physics. Each one has different goal and needs its own ap... | {"url":"http://en.wikibooks.org/wiki/Guide_to_Non-linear_Dynamics_in_Accelerator_Physics/Tracking","timestamp":"2014-04-16T08:27:14Z","content_type":null,"content_length":"44868","record_id":"<urn:uuid:8c8f771e-abad-4701-9e83-45942445bd8d>","cc-path":"CC-MAIN-2014-15/segments/1397609521558.37/warc/CC-MAIN-2014041600520... |
7th Grade Math - Numbers and Operations
7th Grade Math - Numbers and Operations It may
... | {"url":"http://www.mathyellowpages.com/7th-Grade-Math/7th-Grade-Math---Numbers-and-Operations.html","timestamp":"2014-04-17T04:47:58Z","content_type":null,"content_length":"105727","record_id":"<urn:uuid:ff50f915-ec2c-4b00-93d0-3848d1bd8361>","cc-path":"CC-MAIN-2014-15/segments/1397609526252.40/warc/CC-MAIN-20140416005... |
TM Math Fonts
TM Math is a family of serif fonts, inspired by remarkable Times Roman^(TM) typeface. Times Roman first appeared in 1932 in The Times of London newspaper, for which it was designed under the
direction of Stanley Morison. It has subsequently become one of the worlds most successful type creations. Widely u... | {"url":"http://www.micropress-inc.com/fonts/tmmath/tmmain.htm","timestamp":"2014-04-18T20:43:00Z","content_type":null,"content_length":"14318","record_id":"<urn:uuid:ed89f1c1-59f2-45be-98ff-c546808cb9bb>","cc-path":"CC-MAIN-2014-15/segments/1397609535095.9/warc/CC-MAIN-20140416005215-00428-ip-10-147-4-33.ec2.internal.w... |
Laveen Algebra Tutor
...I think my two main strengths as a tutor are my ability to impart this understanding using visual aids and analogies, and my ability to break down complex problems to simple and easy ones. I am
great at organizing problems in a way that makes them become easy, and I can teach you how to do i... | {"url":"http://www.purplemath.com/laveen_algebra_tutors.php","timestamp":"2014-04-17T11:29:44Z","content_type":null,"content_length":"23659","record_id":"<urn:uuid:a1484d7a-74fb-4d7b-acaf-0c0f6fcbc920>","cc-path":"CC-MAIN-2014-15/segments/1397609527423.39/warc/CC-MAIN-20140416005207-00360-ip-10-147-4-33.ec2.internal.wa... |
Best 3d graphing app for a cheapskate?
December 18, 2008 10:07 PM Subscribe
Best application for 3D graphing (heat maps, contours, bump maps and so on)?
I have some data, mostly 3D and the data in higher dimensions can generally be reduced to 3D for analysis.
A typical dataset has a value for several hundred (x,y,z) t... | {"url":"http://ask.metafilter.com/109580/Best-3d-graphing-app-for-a-cheapskate","timestamp":"2014-04-17T01:02:36Z","content_type":null,"content_length":"24543","record_id":"<urn:uuid:c55b28c5-87bb-46db-b7d3-17e5876fe7d7>","cc-path":"CC-MAIN-2014-15/segments/1397609526102.3/warc/CC-MAIN-20140416005206-00610-ip-10-147-4-... |
On Run Distributions, pt. 5: Estimating Variance
So far, I’ve demonstrated only that the zero-modified negative binomial distribution (which I’m referring to as the Enby distribution for the sake of my sanity) can provide a decent fit to actual
scoring patterns when the sample variance of runs per game is known. In ord... | {"url":"http://walksaber.blogspot.com/2012/07/on-run-distributions-pt-5.html","timestamp":"2014-04-17T04:00:34Z","content_type":null,"content_length":"91604","record_id":"<urn:uuid:5b9c3135-1094-4aaa-8c1a-272060d7d16c>","cc-path":"CC-MAIN-2014-15/segments/1398223201753.19/warc/CC-MAIN-20140423032001-00592-ip-10-147-4-3... |
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Infinite limit question :D
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Y... | {"url":"http://openstudy.com/updates/5080966ee4b00774b2419baf","timestamp":"2014-04-20T13:52:26Z","content_type":null,"content_length":"41726","record_id":"<urn:uuid:679fd317-0b0d-4108-b4b9-bc1efb87e759>","cc-path":"CC-MAIN-2014-15/segments/1397609538787.31/warc/CC-MAIN-20140416005218-00574-ip-10-147-4-33.ec2.internal.... |
Lagrange's Theorem & orders
March 11th 2010, 06:51 PM #1
Junior Member
Jan 2010
Lagrange's Theorem & orders
My question is: If |G|=15, show that G must have an element of order 3.
We're currently learning about Lagrange's Theorem, so I know that I need to use it somehow, and I can't use Sylow's or Cauchy's ... | {"url":"http://mathhelpforum.com/advanced-algebra/133404-lagrange-s-theorem-orders.html","timestamp":"2014-04-16T21:03:09Z","content_type":null,"content_length":"54608","record_id":"<urn:uuid:ecf6fc26-2140-4eee-88b6-b7460884d2f6>","cc-path":"CC-MAIN-2014-15/segments/1397609524644.38/warc/CC-MAIN-20140416005204-00072-ip... |
Morita theory in stable homotopy theory. In Handbook of tilting theory, volume 332
- Amer. Jour. Math , 2004
"... Abstract: We show that the homotopy theory of differential graded algebras coincides with the homotopy theory of HZ-algebra spectra. Namely, we construct Quillen equivalences between the Quillen
model categ... | {"url":"http://citeseerx.ist.psu.edu/showciting?cid=6418871","timestamp":"2014-04-19T02:26:13Z","content_type":null,"content_length":"17195","record_id":"<urn:uuid:6d7e357c-fe6a-4766-80b1-86bd524e9611>","cc-path":"CC-MAIN-2014-15/segments/1397609535745.0/warc/CC-MAIN-20140416005215-00326-ip-10-147-4-33.ec2.internal.war... |
Comparing Decimals
If there are two decimal numbers we can compare them. One number is either greater than, less than or equal to the other number.
A decimal number is just a fractional number. Comparing 0.7 and 0.07 is clearer if we compared 7/10 to 7/100. The fraction 7/10 is equivalent to 70/100 which is cle... | {"url":"http://www.aaamath.com/g6_52_x1.htm","timestamp":"2014-04-16T08:13:47Z","content_type":null,"content_length":"7232","record_id":"<urn:uuid:a270a1e2-a586-47fb-b2d9-aac96755a56e>","cc-path":"CC-MAIN-2014-15/segments/1397609521558.37/warc/CC-MAIN-20140416005201-00513-ip-10-147-4-33.ec2.internal.warc.gz"} |
Differential Equations: Homogeneous Linear Systems
It's been a while since we did math, so let's return to the always interesting field of differential equations, and specifically: homogeneous linear systems. As before, a "linear" system refers to
the degree and in this case, of one.
Now, to define homogeneous, let us... | {"url":"http://brane-space.blogspot.com/2011/01/differential-equations-homogeneous.html","timestamp":"2014-04-17T09:40:54Z","content_type":null,"content_length":"69471","record_id":"<urn:uuid:0966a7cc-ee34-47f0-be93-dfccdc82ec5b>","cc-path":"CC-MAIN-2014-15/segments/1398223211700.16/warc/CC-MAIN-20140423032011-00123-ip... |
What If We Had Negative Mass?
Shooting star
So, a common balance does not measure mass, as we had been taught. It only measures the magnitude of the mass?
Well what I said is that it measures the magnitude of the
normal force
. This is then internally proportioned to "weight" by the balance...
Shooting star
What ab... | {"url":"http://www.physicsforums.com/showthread.php?t=207201","timestamp":"2014-04-17T10:03:10Z","content_type":null,"content_length":"50610","record_id":"<urn:uuid:dc1ad782-8efd-40ab-89ef-1939c9f896ea>","cc-path":"CC-MAIN-2014-15/segments/1398223202548.14/warc/CC-MAIN-20140423032002-00238-ip-10-147-4-33.ec2.internal.w... |
This Article
Bibliographic References
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S. Ullman, R. Basri, "Recognition by Linear Combinations of Models," IEEE Transactions on Pattern Analysi... | {"url":"http://www.computer.org/csdl/trans/tp/1991/10/i0992-abs.html","timestamp":"2014-04-17T13:19:04Z","content_type":null,"content_length":"54864","record_id":"<urn:uuid:0f5cac34-6f69-4562-82c7-168b186f2a70>","cc-path":"CC-MAIN-2014-15/segments/1397609530131.27/warc/CC-MAIN-20140416005210-00269-ip-10-147-4-33.ec2.in... |
Irrigation system needs more pressure....
We recently expanded the irrigation system on our 5 acre property. We are now watering just over 1 acre. Prior to the expansion the system had good pressure and perfromed as expected. With the
additional coverage we are having pressure problems on all stations. I have made many... | {"url":"http://www.terrylove.com/forums/showthread.php?8585-Irrigation-system-needs-more-pressure","timestamp":"2014-04-21T00:41:48Z","content_type":null,"content_length":"77285","record_id":"<urn:uuid:bbd0dc37-8b78-4fbb-802d-68145c4d3c66>","cc-path":"CC-MAIN-2014-15/segments/1397609539337.22/warc/CC-MAIN-2014041600521... |
Biholomophic non-Algebraically Isomorphic Varieties
up vote 18 down vote favorite
Recently, when writing a review for MathSciNet, the following question arose:
Is it true that two smooth complex varieties that are biholomorphic are algebraically isomorphic? The converse is true just because polynomials are holomorphic.... | {"url":"http://mathoverflow.net/questions/132062/biholomophic-non-algebraically-isomorphic-varieties","timestamp":"2014-04-20T10:56:08Z","content_type":null,"content_length":"61126","record_id":"<urn:uuid:9cb85ae4-37a0-4526-a838-b2a49fe47a97>","cc-path":"CC-MAIN-2014-15/segments/1397609538423.10/warc/CC-MAIN-2014041600... |
Use table to find proportion of observations from standard normal... - (1228) | Transtutors
Intro Stats
Use table to find proportion of observations from standard normal distrubtion that satisfies each of the following statements. in each case sketch a standard normal curve and shade area that is the
answers to the que... | {"url":"http://www.transtutors.com/questions/intro-stats-1228.htm","timestamp":"2014-04-16T10:12:35Z","content_type":null,"content_length":"69625","record_id":"<urn:uuid:300a7c4d-fe04-4071-a86b-067768228c20>","cc-path":"CC-MAIN-2014-15/segments/1398223202548.14/warc/CC-MAIN-20140423032002-00394-ip-10-147-4-33.ec2.inter... |
Math Forum - Ask Dr. Math Archives: College Constructions
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Browse College Constructions
Stars indicate particularly interesting answers or good ... | {"url":"http://mathforum.org/library/drmath/sets/college_constructions.html","timestamp":"2014-04-17T08:03:43Z","content_type":null,"content_length":"13088","record_id":"<urn:uuid:ee1c5a54-27e2-4233-b2d9-fcd61a81e703>","cc-path":"CC-MAIN-2014-15/segments/1397609526311.33/warc/CC-MAIN-20140416005206-00601-ip-10-147-4-33... |
Game Theory - Heuristic for single-player puzzle
March 16th 2008, 01:25 PM
Game Theory - Heuristic for single-player puzzle
Board (4x3)
A B C D
E F G H
I J K L
You have 11 chips [1,1,1,1], [2,2,2,2], [3,3], [4] (for example) placed randomly on the 4x3 board in slots A,...,L and one empty slot (that ... | {"url":"http://mathhelpforum.com/math-challenge-problems/31151-game-theory-heuristic-single-player-puzzle-print.html","timestamp":"2014-04-17T20:54:03Z","content_type":null,"content_length":"6749","record_id":"<urn:uuid:ad70ec97-4b00-4ec5-8f3a-053199e653f5>","cc-path":"CC-MAIN-2014-15/segments/1397609530895.48/warc/CC-... |
Problem Solving Using M-file Environments
2.1: Problem Solving Using M-file Environments
Created by: CK-12
The purpose of this section is to introduce the engineering problem solving process in the context of using m-file environments to solve problems. Many variations of this process exist and no single
variation is b... | {"url":"http://www.ck12.org/book/Engineering%253A-An-Introduction-to-Solving-Engineering-Problems-with-Matlab/r1/section/2.1/","timestamp":"2014-04-19T08:22:56Z","content_type":null,"content_length":"100116","record_id":"<urn:uuid:fc787f09-342a-4ef1-b0f8-2ec66ed0ebf0>","cc-path":"CC-MAIN-2014-15/segments/1398223207985.... |
Box Plots
Shodor > Interactivate > Lessons > Box Plots
The goal of this lesson is to introduce box plots and quartiles. An activity and discussion with supplemental exercises help students learn how data can be graphically represented.
Upon completion of this lesson, students will:
• have reviewed the concept of medi... | {"url":"http://www.shodor.org/interactivate/lessons/BoxPlots/","timestamp":"2014-04-17T16:07:19Z","content_type":null,"content_length":"37408","record_id":"<urn:uuid:992431a4-5689-4b91-b473-44901eef1bdc>","cc-path":"CC-MAIN-2014-15/segments/1398223206672.15/warc/CC-MAIN-20140423032006-00144-ip-10-147-4-33.ec2.internal.... |
complex problem
October 11th 2010, 09:43 PM #1
Senior Member
Feb 2010
complex problem
show that the equation of the tangent to the circle mod(z)=r where r>0 at point z0 is given by ((conjugate) (z0))*z+z0*((conjugate)(z)=2*r^2
not understanding how to do this as moving point on the circumference of circle i... | {"url":"http://mathhelpforum.com/pre-calculus/159273-complex-problem.html","timestamp":"2014-04-19T04:35:06Z","content_type":null,"content_length":"41716","record_id":"<urn:uuid:0985ac55-4677-400a-be16-7e20d50284b5>","cc-path":"CC-MAIN-2014-15/segments/1398223203422.8/warc/CC-MAIN-20140423032003-00389-ip-10-147-4-33.ec... |
Galois group of a polynomial
January 3rd 2010, 02:59 AM #1
Jan 2010
Galois group of a polynomial
I have to find a splitting field $L$ of the polynomial $f=x^4-4x^2+9 \in \mathbb Q[x]$ over $\mathbb Q$ and the galois group and all intermediate fields of the algebraic extension $L/\mathbb Q$.
I found out, tha... | {"url":"http://mathhelpforum.com/advanced-algebra/122258-galois-group-polynomial.html","timestamp":"2014-04-18T20:54:29Z","content_type":null,"content_length":"46660","record_id":"<urn:uuid:6b651b4c-ef06-4391-b98b-2b1b59cee1f7>","cc-path":"CC-MAIN-2014-15/segments/1397609539230.18/warc/CC-MAIN-20140416005219-00301-ip-1... |
Pacific Palisades SAT Math Tutor
Find a Pacific Palisades SAT Math Tutor
...I have not only the textbook from which I taught the course, but also the text from when I was enrolled in the class as an undergraduate student. I feel I have a solid grasp of this topic, and
encourage potential students to review my ratin... | {"url":"http://www.purplemath.com/Pacific_Palisades_SAT_Math_tutors.php","timestamp":"2014-04-16T22:26:30Z","content_type":null,"content_length":"24412","record_id":"<urn:uuid:31e472ec-42bf-4d39-be51-46afd06982f8>","cc-path":"CC-MAIN-2014-15/segments/1398223201753.19/warc/CC-MAIN-20140423032001-00086-ip-10-147-4-33.ec2... |
cant get my radix sort working:(
Author cant get my radix sort working:(
i need to write code to sort an arbitrary number of digits and random values. my code as of now just replaces the first position with the last position!... | {"url":"http://www.coderanch.com/t/608765/java/java/radix-sort-working","timestamp":"2014-04-18T12:10:29Z","content_type":null,"content_length":"22531","record_id":"<urn:uuid:28eaf74c-8496-49a0-bb65-f74641e9f9e0>","cc-path":"CC-MAIN-2014-15/segments/1397609533308.11/warc/CC-MAIN-20140416005213-00130-ip-10-147-4-33.ec2.... |
[Numpy-discussion] matrix indexing question
Alan G Isaac aisaac@american....
Mon Mar 26 08:54:26 CDT 2007
> Alan G Isaac schrieb:
>> What feels wrong: iterating over a container does not give
>> access to the contained objects. This is not Pythonic.
On Mon, 26 Mar 2007, Sven Schreiber apparently wrote:
> If you ite... | {"url":"http://mail.scipy.org/pipermail/numpy-discussion/2007-March/026794.html","timestamp":"2014-04-17T01:33:40Z","content_type":null,"content_length":"3305","record_id":"<urn:uuid:e1f2b83c-998f-42ae-96dc-364ed8229f7d>","cc-path":"CC-MAIN-2014-15/segments/1397609526102.3/warc/CC-MAIN-20140416005206-00263-ip-10-147-4-... |
Fibonacci induction
April 25th 2013, 03:19 PM #1
Oct 2012
san francisco
Fibonacci induction
Hello I need some help with this problem
For each natural number n, let fn be the nth Fibonacci number. Prove that (f_(n+1))^2 + (f_n)^2 = f_(2n+1).
so far what I have
let n=1 so 1^2 + 1^2 = 2 which is tr... | {"url":"http://mathhelpforum.com/discrete-math/218208-fibonacci-induction.html","timestamp":"2014-04-16T11:09:09Z","content_type":null,"content_length":"43094","record_id":"<urn:uuid:0bb72732-81ae-4f92-96c8-29b0e8334d33>","cc-path":"CC-MAIN-2014-15/segments/1397609523265.25/warc/CC-MAIN-20140416005203-00059-ip-10-147-4... |
need code for generating an ecg signal using fourier series in matlab
need matlab code for R peak detection in ecg signals
I need code for R peak detection in ecg signal using wavelet transform On Mar 14, 5:13=A0am, "naveen chowdary" <nani.moun...@gmail.com> wrote: > I need code for R peak detection in ecg signal using... | {"url":"http://compgroups.net/comp.soft-sys.matlab/need-code-for-generating-an-ecg-signal-u/382277","timestamp":"2014-04-18T10:36:06Z","content_type":null,"content_length":"32719","record_id":"<urn:uuid:2ad7dabb-e87d-493d-8589-9dd9055616ee>","cc-path":"CC-MAIN-2014-15/segments/1397609533308.11/warc/CC-MAIN-201404160052... |
In 1999, Bertram, Ciocan-Fontanine and Fulton related quantum multiplication of Schur polynomials to the classical product via rim-hook removal. This is called the "rim-hook rule." Since the
LIttlewood-Richardson rule is easily accessible, this means that products in $QH^*(Gr(k,n))$ are also similarly accessible. W... | {"url":"http://cms.math.ca/Events/winter13/abs/sfg","timestamp":"2014-04-17T03:51:25Z","content_type":null,"content_length":"23473","record_id":"<urn:uuid:98e41637-7bc6-4b36-9d6b-e47ad4a1518f>","cc-path":"CC-MAIN-2014-15/segments/1397609526252.40/warc/CC-MAIN-20140416005206-00012-ip-10-147-4-33.ec2.internal.warc.gz"} |
Obtain A Relation For The Fin Efficiency For A... | Chegg.com
Obtain a relation for the fin efficiency for a fin of constant cross-sectional area Ac, perimeter p, length L, and thermal conductivity k exposed to convection to a medium at T∞ with a heat transfer
coefficient h. Assume the fins are sufficiently long so tha... | {"url":"http://www.chegg.com/homework-help/obtain-relation-fin-efficiency-fin-constant-cross-sectional-chapter-17-problem-110p-solution-9780073327488-exc","timestamp":"2014-04-21T05:14:37Z","content_type":null,"content_length":"47256","record_id":"<urn:uuid:7f1b0c3f-b015-427a-9dfe-6cb26a55f735>","cc-path":"CC-MAIN-2014... |
East Lansdowne, PA Algebra Tutor
Find an East Lansdowne, PA Algebra Tutor
...Prior to that I was a successful business owner in Chemical Recycling and Contracting, and a Pharmaceutical Researcher in Organic Process Chemistry for Glaxo SmithKline and Sanofi Aventis. I
have several publications in Organic Chemistry R... | {"url":"http://www.purplemath.com/east_lansdowne_pa_algebra_tutors.php","timestamp":"2014-04-21T10:45:57Z","content_type":null,"content_length":"24233","record_id":"<urn:uuid:6c805bad-ae48-4e12-bf90-94bf63b92c31>","cc-path":"CC-MAIN-2014-15/segments/1398223203841.5/warc/CC-MAIN-20140423032003-00500-ip-10-147-4-33.ec2.i... |
How to Calculate Power Output
Edit Article
Edited by Bob Hauser, Teresa, Flickety, Carolyn Barratt and 3 others
How to calculate power in horsepower or watts, what the terms mean and why would they be of importance.
1. 1
Review the fundamentals. The word "power" is defined as the time rate of doing work. Work in t... | {"url":"http://www.wikihow.com/Calculate-Power-Output","timestamp":"2014-04-20T13:27:11Z","content_type":null,"content_length":"67352","record_id":"<urn:uuid:02030e94-3af9-48b0-9eff-eed8da987761>","cc-path":"CC-MAIN-2014-15/segments/1398223205137.4/warc/CC-MAIN-20140423032005-00548-ip-10-147-4-33.ec2.internal.warc.gz"} |
Need to impress my dad(Who's a math teacher)
December 26th 2010, 04:04 PM
Need to impress my dad(Who's a math teacher)
Someone please help me work out these problems, I'm supposed to find the zeros of each function.
Also how would I complete the square for this expression?
Please help I'd appreciate it,have... | {"url":"http://mathhelpforum.com/algebra/166922-need-impress-my-dad-whos-math-teacher-print.html","timestamp":"2014-04-20T13:55:51Z","content_type":null,"content_length":"6779","record_id":"<urn:uuid:b88010ec-faab-4b60-8be6-952f4329389a>","cc-path":"CC-MAIN-2014-15/segments/1398223207046.13/warc/CC-MAIN-20140423032007-... |
FCP Step 3- Fit Main Effects
Next: Dose-Response Analyses (DRA) Up: Facility Comparison Analyses Previous: FCP Step 2-
The third step was to fit a main effects model (see Eq. 2) for each race and gender group for each cause of death of interest---the results are given in Tables III--V. Consider, as an example of ho... | {"url":"http://www.csm.ornl.gov/~frome/ORMS/app/node5.html","timestamp":"2014-04-16T10:47:24Z","content_type":null,"content_length":"5463","record_id":"<urn:uuid:348dc28c-6147-416d-9d56-6de08c05d152>","cc-path":"CC-MAIN-2014-15/segments/1397609523265.25/warc/CC-MAIN-20140416005203-00061-ip-10-147-4-33.ec2.internal.warc... |
The 35-kg Box Has A Speed Of 2 M/s When It Is At ... | Chegg.com
Image text transcribed for accessibility: The 35-kg box has a speed of 2 m/s when it is at A on the smooth ramp. If the surface is in the shape of a parabola, determine the normal force on the box at
the instant x = 3m. Also, what is the rate of increase ... | {"url":"http://www.chegg.com/homework-help/questions-and-answers/35-kg-box-speed-2-m-s-smooth-ramp-surface-shape-parabola-determine-normal-force-box-instan-q3609308","timestamp":"2014-04-23T21:29:12Z","content_type":null,"content_length":"20618","record_id":"<urn:uuid:09583677-d1dc-413f-a540-0ece574130d4>","cc-path":"C... |
Portability GHC with TypeFamilies and more
Stability unstable
Maintainer Stephen Tetley <stephen.tetley@gmail.com>
Picture types
data Picture u Source
Picture is a leaf attributed tree - where atttibutes are colour, line-width etc. It is parametric on the unit type of points (typically Double).
Wumpus's leaf attribu... | {"url":"http://hackage.haskell.org/package/wumpus-core-0.17.0/docs/Wumpus-Core-WumpusTypes.html","timestamp":"2014-04-20T14:26:49Z","content_type":null,"content_length":"25201","record_id":"<urn:uuid:020d362e-72d6-4f39-97d7-155f1c72dfad>","cc-path":"CC-MAIN-2014-15/segments/1397609538787.31/warc/CC-MAIN-20140416005218-... |
Find an equation from this graph.
Hello, I need an equation that matches the attached graph. Please help. Data is below the graph. Thanks,
Since there are 40 points, it would fit a polynomial of order 39 exactly. Let $\displaystyle y = c_0 + c_1x + c_2x^2 + ... + c_{39}x^{39}$. When you substitute each point, you'll ge... | {"url":"http://mathhelpforum.com/calculus/186098-find-equation-graph.html","timestamp":"2014-04-18T14:38:05Z","content_type":null,"content_length":"62031","record_id":"<urn:uuid:84ea0959-1da6-4ae9-ae11-4c747dc8f3d7>","cc-path":"CC-MAIN-2014-15/segments/1397609533689.29/warc/CC-MAIN-20140416005213-00413-ip-10-147-4-33.e... |
first post in this forum
November 2nd 2012, 04:21 AM
first post in this forum
A spends 1/4 of her savings on bike and 1/3 less than she spent on the bike for a car. what fraction of her savings did she spent on bike and car?
November 3rd 2012, 05:29 AM
Re: first post in this forum
let her savings be x
She s... | {"url":"http://mathhelpforum.com/new-users/206604-first-post-forum-print.html","timestamp":"2014-04-18T18:02:41Z","content_type":null,"content_length":"6243","record_id":"<urn:uuid:2720f38f-1a90-461a-9653-16b89ecdb69b>","cc-path":"CC-MAIN-2014-15/segments/1397609533957.14/warc/CC-MAIN-20140416005213-00054-ip-10-147-4-3... |
Radiation heat transfer in solid-propellant rocket engines
Number of views: 3922 Article added: 7 September 2010 Article last modified: 3 January 2011 © Copyright 2010-2014 Back to top
Welcome to “Applications” Science and Engineering Area!
The left bar has all subject areas and articles that are organized by scientifi... | {"url":"http://www.thermopedia.com/content/175/?tid=108&sn=1188","timestamp":"2014-04-18T11:50:27Z","content_type":null,"content_length":"40404","record_id":"<urn:uuid:c3ec1722-58fe-4a8c-a813-7ecd7d861db8>","cc-path":"CC-MAIN-2014-15/segments/1397609533308.11/warc/CC-MAIN-20140416005213-00382-ip-10-147-4-33.ec2.interna... |
[Numpy-discussion] .byteswap() and copy/view dilemma
Francesc Altet faltet at carabos.com
Wed Dec 13 11:28:01 CST 2006
I'm a bit confused about which cases the .byteswap() method in NumPy
would return a copy or a view. From the docstrings:
a.byteswap(False) -> View or copy. Swap the bytes in the array.
Swap the bytes i... | {"url":"http://mail.scipy.org/pipermail/numpy-discussion/2006-December/025017.html","timestamp":"2014-04-19T18:14:48Z","content_type":null,"content_length":"3932","record_id":"<urn:uuid:e67479d1-5e07-48f2-b273-7cf4fd16d5f6>","cc-path":"CC-MAIN-2014-15/segments/1397609537308.32/warc/CC-MAIN-20140416005217-00573-ip-10-14... |
Nuclear Phynance
What is the relation between the two?
Phorgy A quick dose of Googling tells me something along the lines of "white noise is the derivative of a Wiener process". Could someone shed some light and maybe point to some better
PhynanceBanned references?
Total Posts:
2961 Th... | {"url":"http://www.nuclearphynance.com/Show%20Post.aspx?PostIDKey=69584","timestamp":"2014-04-19T06:52:29Z","content_type":null,"content_length":"74234","record_id":"<urn:uuid:d821ce02-11df-4074-967a-92024f2db345>","cc-path":"CC-MAIN-2014-15/segments/1397609536300.49/warc/CC-MAIN-20140416005216-00274-ip-10-147-4-33.ec2... |
the encyclopedic entry of geocentric longitude
(or ), symbolized by the
(λ), is the east-west
geographic coordinate
measurement most commonly used in cartography and global navigation. A line of longitude is a
and half of a
great circle
Mariners and explorers for most of history struggled to determine precise longitude... | {"url":"http://www.reference.com/browse/geocentric+longitude","timestamp":"2014-04-21T11:38:54Z","content_type":null,"content_length":"104469","record_id":"<urn:uuid:202f16eb-0c57-44d3-b9dc-ac4274f78541>","cc-path":"CC-MAIN-2014-15/segments/1397609539705.42/warc/CC-MAIN-20140416005219-00027-ip-10-147-4-33.ec2.internal.... |
Optimal Manoeuvres of Underactuated Linear Mechanical Systems: The Case of Controlling Gantry Crane Operations
Journal of Applied Mathematics
Volume 2014 (2014), Article ID 283565, 16 pages
Research Article
Optimal Manoeuvres of Underactuated Linear Mechanical Systems: The Case of Controlling Gantry Crane Operations
De... | {"url":"http://www.hindawi.com/journals/jam/2014/283565/","timestamp":"2014-04-16T22:14:22Z","content_type":null,"content_length":"849689","record_id":"<urn:uuid:e188cc83-5363-4803-ab7f-c3615d305ba7>","cc-path":"CC-MAIN-2014-15/segments/1397609525991.2/warc/CC-MAIN-20140416005205-00454-ip-10-147-4-33.ec2.internal.warc.... |
Population Genetics Examples
1. 2. Calculating allelic frequencies from genotypic frequencies. This method works whether a population is a Hardy-Weinberg population or not. In a certain population, the f(AA) = 0.3, the f(Aa) = 0.4 and the f(aa) = 0.3 Determine p and q. NOTE: This gene has only two alleles, so these thr... | {"url":"http://www.docstoc.com/docs/20549946/Population-Genetics-Examples","timestamp":"2014-04-18T04:38:42Z","content_type":null,"content_length":"58656","record_id":"<urn:uuid:298a1aea-cdf7-467d-b75f-5c17b3ebd7b6>","cc-path":"CC-MAIN-2014-15/segments/1397609532480.36/warc/CC-MAIN-20140416005212-00495-ip-10-147-4-33.e... |
connection for a coring
Given an $A$-coring or even a more general additive comonad with a grouplike element there are several related (but in general nonequivalent) notions of connections.
As explained in grouplike element, to an $A$-coring $C$ with a grouplike element one associates a semi-free differential graded al... | {"url":"http://www.ncatlab.org/nlab/show/connection+for+a+coring","timestamp":"2014-04-16T04:21:58Z","content_type":null,"content_length":"25579","record_id":"<urn:uuid:66bda614-9735-4c39-9098-f6f6c2b102bd>","cc-path":"CC-MAIN-2014-15/segments/1397609521512.15/warc/CC-MAIN-20140416005201-00583-ip-10-147-4-33.ec2.intern... |
[R] truncating a data frame based on a function
Faheem Mitha faheem at email.unc.edu
Fri Sep 21 17:24:12 CEST 2007
Consider the following example.
> a = c(1,2,3); b = c(4,5,6); c = cbind(a,b); c[(2 < c[,1]) & (c[,1] < 4),]
a b
So, the idea is to select rows for which the value in the first column is
between 2 and 4. Th... | {"url":"https://stat.ethz.ch/pipermail/r-help/2007-September/141313.html","timestamp":"2014-04-17T12:33:25Z","content_type":null,"content_length":"2980","record_id":"<urn:uuid:f9e1d0d2-519d-4ea1-90ca-fc81103c7fad>","cc-path":"CC-MAIN-2014-15/segments/1398223205137.4/warc/CC-MAIN-20140423032005-00084-ip-10-147-4-33.ec2.... |
Order Relation
Anti-symmetric: (2, 1) is in the set. If this relation is anti-symmetric, (1, 2) must not be in the set. Yes this is true. So, this property is true.
I was giving an example! (2,1) is not the only pair you need to check.
Reflexive Property:
If x in an element in R, then x < x for all x in R. Therefore, x... | {"url":"http://www.physicsforums.com/showpost.php?p=555137&postcount=4","timestamp":"2014-04-21T07:18:41Z","content_type":null,"content_length":"8019","record_id":"<urn:uuid:4a7fe74c-bb34-4e80-ae68-d68f08ab8c9e>","cc-path":"CC-MAIN-2014-15/segments/1398223202774.3/warc/CC-MAIN-20140423032002-00514-ip-10-147-4-33.ec2.in... |
• 28.60 Two 50-turn coils, each with a diameter of 4.00 m, are placed 1.00 m apart, as shown in the figure. A current of 7.00 A is flowing in the wires of both coils; the direction of the current
is clockwise for both coils when viewed from the left. What is the magnitude of the magnetic field in the center between... | {"url":"http://dev5.mhhe.com/textflowdev/genhtml/0072857366/P6.28.f.htm","timestamp":"2014-04-17T09:33:45Z","content_type":null,"content_length":"93932","record_id":"<urn:uuid:9a73146f-d46b-4a49-bc6b-bf6360547a0b>","cc-path":"CC-MAIN-2014-15/segments/1397609527423.39/warc/CC-MAIN-20140416005207-00198-ip-10-147-4-33.ec2... |
Division of Rational Expressions ( Read ) | Algebra
What if you had two rational expressions like $\frac{x + 5}{x}$$\frac{x^2 + 6x + 5}{x - 2}$rational expressions like this one.
Watch This
CK-12 Foundation: 1209S Dividing Rational Expressions
Watch this video for more examples of how to multiply and divide rational ex... | {"url":"http://www.ck12.org/algebra/Division-of-Rational-Expressions/lesson/Division-of-Rational-Expressions---Intermediate/","timestamp":"2014-04-20T01:36:36Z","content_type":null,"content_length":"118084","record_id":"<urn:uuid:5c037dd3-c378-46e1-a840-cdc2c067c116>","cc-path":"CC-MAIN-2014-15/segments/1397609537804.4... |
Caryn Loves Math
"If practice makes permanent, lets make it fun".
Caryn Loves Math
a question. They will receive an automated email and will return to answer you as soon as possible. Please
to ask your question.
Olga Fernandez Gonzalez
(TpT Seller) re: Freebie~10 Photographs for Commercial Uses~Grand Canyon~Mesa Verde
... | {"url":"http://www.teacherspayteachers.com/Store/Caryn-Loves-Math","timestamp":"2014-04-16T19:27:49Z","content_type":null,"content_length":"339023","record_id":"<urn:uuid:d648c2a3-9bc3-4a12-84e8-fa39600d6ea5>","cc-path":"CC-MAIN-2014-15/segments/1397609524644.38/warc/CC-MAIN-20140416005204-00018-ip-10-147-4-33.ec2.inte... |
PHONON Software
by Krzysztof PARLINSKI
Last update: January 2, 2008 Phonon is a software (see list of Publications) for calculating phonon dispersion curves, and phonon density spectra of crystals, crystals with defects, surfaces,
adsorbed atoms on surfaces, etc. from either a set of force constants, or from a set of H... | {"url":"http://wolf.ifj.edu.pl/phonon/","timestamp":"2014-04-21T03:30:56Z","content_type":null,"content_length":"3650","record_id":"<urn:uuid:63063470-b01f-4e25-950c-41bbe0574983>","cc-path":"CC-MAIN-2014-15/segments/1397609539447.23/warc/CC-MAIN-20140416005219-00194-ip-10-147-4-33.ec2.internal.warc.gz"} |
Number of bacteria present in a culture at any time, t hours, is modelled by the equation N=ne^kt
If the original... - Homework Help - eNotes.com
Number of bacteria present in a culture at any time, t hours, is modelled by the equation N=ne^kt If the original number is doubled in 3 hours find k?
The number of bacteria ... | {"url":"http://www.enotes.com/homework-help/number-bacteria-present-culture-any-time-t-hours-421571","timestamp":"2014-04-17T02:50:46Z","content_type":null,"content_length":"25484","record_id":"<urn:uuid:9744d9aa-a03a-4464-b0f7-5f424fa766aa>","cc-path":"CC-MAIN-2014-15/segments/1397609526102.3/warc/CC-MAIN-201404160052... |
Encyclopaedia Index
TMP1, a PIL real variable for setting first-phase temperature, when the variable TEM1 is not being solved for directly.
TMP2 is the corresponding variable for second-phase temperature.
It acts in one of four ways:-
1. Setting uniform temperature.
If TMP1 is set to a value outside the range from... | {"url":"http://www.cham.co.uk/phoenics/d_polis/d_enc/tmp1.htm","timestamp":"2014-04-16T13:08:13Z","content_type":null,"content_length":"9891","record_id":"<urn:uuid:de8e7ac7-11ee-45a1-9a8a-59d7b99f4e27>","cc-path":"CC-MAIN-2014-15/segments/1397609523429.20/warc/CC-MAIN-20140416005203-00234-ip-10-147-4-33.ec2.internal.w... |
spectra of VERY sparse random matrices
up vote 2 down vote favorite
Consider an $n\times n$ random binary matrix $M$ with i.i.d. entries $m_{ij} \sim {\rm Bernoulli}(p)$, where $p = n^{-\beta}$ with $\beta \in (1,2)$. I am interested in the behavior of the singular
value decomposition of $$M = \sum_{i=1}^{rank(M)} \sig... | {"url":"http://mathoverflow.net/questions/86238/spectra-of-very-sparse-random-matrices","timestamp":"2014-04-21T10:18:27Z","content_type":null,"content_length":"66159","record_id":"<urn:uuid:d168fd50-9dbe-40d9-a86e-f24889da49c2>","cc-path":"CC-MAIN-2014-15/segments/1397609539705.42/warc/CC-MAIN-20140416005219-00314-ip-... |
Table 4: Minimum number of plots required to detect a 5% difference in increment estimates using different methods at 90% confidence, with 95% power in a paired -test. Numbers in italics are the
standard deviation of the differences between each pair of methods, numbers in normal text are the required numbers of plots.... | {"url":"http://www.hindawi.com/journals/ijfr/2012/961576/tab4/","timestamp":"2014-04-17T00:55:14Z","content_type":null,"content_length":"3569","record_id":"<urn:uuid:694dbff7-98b0-4468-a542-7af520dd5dbe>","cc-path":"CC-MAIN-2014-15/segments/1397609526102.3/warc/CC-MAIN-20140416005206-00650-ip-10-147-4-33.ec2.internal.w... |
Ferdinand Georg Frobenius
Born: 26 October 1849 in Berlin-Charlottenburg, Prussia (now Germany)
Died: 3 August 1917 in Berlin, Germany
... | {"url":"http://www-history.mcs.st-and.ac.uk/Biographies/Frobenius.html","timestamp":"2014-04-17T15:46:06Z","content_type":null,"content_length":"31874","record_id":"<urn:uuid:27d12717-2ecf-417c-9393-244afa3e5576>","cc-path":"CC-MAIN-2014-15/segments/1397609530136.5/warc/CC-MAIN-20140416005210-00502-ip-10-147-4-33.ec2.i... |
Maintainer Roman Cheplyaka <roma@ro-che.info>
Properties and tools to construct them.
Basic definitions
data TestResult Source
Inappropriate Inappropriate means that the precondition of ==> was not satisfied
type Depth = IntSource
Maximum depth of generated test values
For data values, it is the depth of nested constr... | {"url":"http://hackage.haskell.org/package/smallcheck-0.6/docs/Test-SmallCheck-Property.html","timestamp":"2014-04-18T14:12:57Z","content_type":null,"content_length":"22871","record_id":"<urn:uuid:b4b3a2c1-af80-4d4d-b1ad-cd28a3e34f59>","cc-path":"CC-MAIN-2014-15/segments/1397609533689.29/warc/CC-MAIN-20140416005213-001... |
one time pad breakable debate
04-04-2010 #256
the computer or the program has no way to know if or when the correct data is exposed.
When attempting cryptanalysis against a cipher not equivalent to a one time pad, there are ways to program a computer to detect a plausible ciphertext, e.g., if the cryptanalyst ... | {"url":"http://cboard.cprogramming.com/general-discussions/124640-one-time-pad-breakable-debate-18.html","timestamp":"2014-04-19T10:59:27Z","content_type":null,"content_length":"89066","record_id":"<urn:uuid:b9038ae8-188d-43a6-9122-7ba6ce3ae00d>","cc-path":"CC-MAIN-2014-15/segments/1397609537097.26/warc/CC-MAIN-2014041... |
Goal Seek to Solve A Problem
Microsoft Excel is jam packed with cool useful features that tend to go unused by most users, simply because they don’t know how to use them, or even that they exist. One of these features is
Excel’s Goal Seek tool.
First, some background on what it does. Goal Seek is essentially the answ... | {"url":"http://excelzoom.com/2009/07/goal-seek-to-solve-a-problem/","timestamp":"2014-04-18T05:54:39Z","content_type":null,"content_length":"31439","record_id":"<urn:uuid:27eab9e1-0cb3-4f7f-a6bf-e5dedf113251>","cc-path":"CC-MAIN-2014-15/segments/1397609532573.41/warc/CC-MAIN-20140416005212-00366-ip-10-147-4-33.ec2.inte... |
MathGroup Archive: October 2010 [00562]
[Date Index] [Thread Index] [Author Index]
Re: Can one define own indexing function/mapping to be
• To: mathgroup at smc.vnet.net
• Subject: [mg113355] Re: Can one define own indexing function/mappi... | {"url":"http://forums.wolfram.com/mathgroup/archive/2010/Oct/msg00562.html","timestamp":"2014-04-18T05:49:26Z","content_type":null,"content_length":"30294","record_id":"<urn:uuid:24d7e17d-4491-437c-a8bc-08bbfdc8664e>","cc-path":"CC-MAIN-2014-15/segments/1398223205375.6/warc/CC-MAIN-20140423032005-00496-ip-10-147-4-33.e... |
Faculty / Organisational entity
558 search hits
On an implementation of standard bases and syzygies in SINGULAR (1999)
Hubert Grassmann Gert-Martin Greuel Bernd Martin W. Neumann Gerhard Pfister W. Pohl Hans Schönemann Thomas Siebert
A Proposal for Syntactic Data Integration for Math Protocols (1999)
Olaf Bachmann Hans... | {"url":"https://kluedo.ub.uni-kl.de/solrsearch/index/search/searchtype/simple/query/*:*/browsing/true/doctypefq/preprint/start/0/rows/10/institutefq/Fachbereich+Mathematik","timestamp":"2014-04-17T16:19:30Z","content_type":null,"content_length":"49327","record_id":"<urn:uuid:0a7997c0-3dfb-4743-94a1-53742671647a>","cc-p... |
power series expansion
You haven't done anything that jhevon suggested! He suggested that you write out the power series for $\frac{1}{1- x}$ and differentiate that twice! What is the power series for $\frac{1}{1- x}$?
(Hint: the sum of the geometric series $\sum_{n=0}^\infty ar^n$ is $\frac{a}{1- r}$.)
power series 1/... | {"url":"http://mathhelpforum.com/calculus/123364-power-series-expansion-print.html","timestamp":"2014-04-17T07:41:28Z","content_type":null,"content_length":"11124","record_id":"<urn:uuid:e97cd377-9810-462b-b6c0-af5c5f59d7a3>","cc-path":"CC-MAIN-2014-15/segments/1397609526311.33/warc/CC-MAIN-20140416005206-00474-ip-10-1... |
Surface Area And Volume
Exercise 1
Question: 1. 2 cubes each of volume 64 cm^3 are joined end to end. Find the surface area of the resulting cuboid.
Question: 2. A vessel is in the form of a hollow hemisphere mounted by a hollow cylinder. The diameter of the hemisphere is 14 cm and the total height of the vessel is 13 ... | {"url":"http://www.excellup.com/classten/mathten/areavolumeexone.aspx","timestamp":"2014-04-20T05:50:46Z","content_type":null,"content_length":"32981","record_id":"<urn:uuid:c16e33f9-b763-47a3-ba38-09d54cc1f03a>","cc-path":"CC-MAIN-2014-15/segments/1398223207985.17/warc/CC-MAIN-20140423032007-00620-ip-10-147-4-33.ec2.i... |
Derivative of the zeta function at 0
February 24th 2009, 02:11 PM #1
Derivative of the zeta function at 0
I'm not well aquainted with divergent series, so I'm just asking for help to see if this makes any sense at all. I know my final result is right, but the use of indefinite integration with
divergent series ... | {"url":"http://mathhelpforum.com/calculus/75570-derivative-zeta-function-0-a.html","timestamp":"2014-04-18T07:53:27Z","content_type":null,"content_length":"34856","record_id":"<urn:uuid:01a32ba9-d4be-483a-8f15-01515cc27679>","cc-path":"CC-MAIN-2014-15/segments/1397609532573.41/warc/CC-MAIN-20140416005212-00654-ip-10-14... |
Existence and Decay Estimate of Global Solutions to Systems of Nonlinear Wave Equations with Damping and Source Terms
Abstract and Applied Analysis
Volume 2013 (2013), Article ID 903625, 9 pages
Research Article
Existence and Decay Estimate of Global Solutions to Systems of Nonlinear Wave Equations with Damping and Sou... | {"url":"http://www.hindawi.com/journals/aaa/2013/903625/","timestamp":"2014-04-17T19:49:22Z","content_type":null,"content_length":"888646","record_id":"<urn:uuid:924c6ee2-f510-4f5a-95c0-2d2d7a6518f8>","cc-path":"CC-MAIN-2014-15/segments/1397609530895.48/warc/CC-MAIN-20140416005210-00156-ip-10-147-4-33.ec2.internal.warc... |
Finding net external force
Mass of 2.6kg lies on a frictionless table, pulled by another mass of 4.1kg under the influence of gravity (mass 4.1kg is hanging off the edge of the table). The acceleration due to gravity is 9.8m/s
^2. What is the magnitude of the net external force (gravitational) acting on the two masses?... | {"url":"http://www.physicsforums.com/showthread.php?t=92426","timestamp":"2014-04-17T21:29:40Z","content_type":null,"content_length":"24468","record_id":"<urn:uuid:a3b8f058-707f-4eb2-8b26-aa897664b1c1>","cc-path":"CC-MAIN-2014-15/segments/1397609532128.44/warc/CC-MAIN-20140416005212-00299-ip-10-147-4-33.ec2.internal.wa... |
On degenerate integrable hamiltonian systems
up vote 3 down vote favorite
Is there some reference where the existence of local generalized action-angle variables is discussed in some detail for concrete examples of hamiltonian systems of mechanical type?
After Dazord and Delzant, by local generalized action-angle coord... | {"url":"http://mathoverflow.net/questions/68418/on-degenerate-integrable-hamiltonian-systems/68491","timestamp":"2014-04-18T00:30:58Z","content_type":null,"content_length":"55829","record_id":"<urn:uuid:165507a2-92dd-4d52-99a4-c681db11fed1>","cc-path":"CC-MAIN-2014-15/segments/1397609532374.24/warc/CC-MAIN-201404160052... |
Del Mar Algebra 1 Tutor
...I make our sessions fun. You learn why it is important to be able to complete algebra/math problems. I tutor at the Tutoring Club and also privately tutor students.
11 Subjects: including algebra 1, calculus, public speaking, GMAT
...My relationships with the students go beyond the fo... | {"url":"http://www.purplemath.com/del_mar_algebra_1_tutors.php","timestamp":"2014-04-18T23:50:57Z","content_type":null,"content_length":"23798","record_id":"<urn:uuid:0b3a2bb3-25e6-4a2b-b3e2-a27d84c4ea32>","cc-path":"CC-MAIN-2014-15/segments/1398223206770.7/warc/CC-MAIN-20140423032006-00009-ip-10-147-4-33.ec2.internal.... |
Numerical Python Basics
Published on ONLamp.com (http://www.onlamp.com/)
See this if you're having trouble printing code examples
Numerical Python Basics
Installing Numerical Python
To use Numerical Python, you'll need to install it first. For the details, see our handy guide with instructions and download location... | {"url":"http://www.linuxdevcenter.com/lpt/a/177","timestamp":"2014-04-16T22:24:31Z","content_type":null,"content_length":"22876","record_id":"<urn:uuid:7a47d4d8-90a7-44da-a9b3-5d8276bf6575>","cc-path":"CC-MAIN-2014-15/segments/1397609525991.2/warc/CC-MAIN-20140416005205-00286-ip-10-147-4-33.ec2.internal.warc.gz"} |
Oh, to be young AND productive.
ayoo jus wonderinn, who exactlyy who yu bee?
Hey meng, it’s Tom Rae, yo.
What it be, dude?
“As we grow up, we learn that even the one person that wasn’t supposed to ever let us down, probably will. You’ll have your heart broken and you’ll break others’ hearts. You’ll fight with your best... | {"url":"http://celestial-aspirations.tumblr.com/archive/2010/8","timestamp":"2014-04-17T06:50:12Z","content_type":null,"content_length":"31581","record_id":"<urn:uuid:429da449-56af-4017-9281-978bec329ecf>","cc-path":"CC-MAIN-2014-15/segments/1397609526311.33/warc/CC-MAIN-20140416005206-00212-ip-10-147-4-33.ec2.internal... |
188 helpers are online right now
75% of questions are answered within 5 minutes.
is replying to Can someone tell me what button the professor is hitting...
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Thanks... | {"url":"http://openstudy.com/users/carriestudy/asked","timestamp":"2014-04-16T22:37:49Z","content_type":null,"content_length":"68040","record_id":"<urn:uuid:5781cdd9-2ec4-4a2e-9449-1f115337e367>","cc-path":"CC-MAIN-2014-15/segments/1397609525991.2/warc/CC-MAIN-20140416005205-00627-ip-10-147-4-33.ec2.internal.warc.gz"} |
Post a reply
Hi can somebody please help me see if my answer to the following question is correct
Calculate the area for each of the polygons below. If you do not know an equation to use, divide the polygon into other shapes to determine the area.
I choose A because
((1² * 3 / 4 tan ))* (180/3) = 0.43301270189
1. An eq... | {"url":"http://www.mathisfunforum.com/post.php?tid=18445&qid=240455","timestamp":"2014-04-16T10:48:56Z","content_type":null,"content_length":"15417","record_id":"<urn:uuid:3a8c9a5c-1741-4a78-a8a3-c3fe4b81ca76>","cc-path":"CC-MAIN-2014-15/segments/1397609523265.25/warc/CC-MAIN-20140416005203-00058-ip-10-147-4-33.ec2.int... |
A dynamical quantum simulator
Figure: (left) Schematics of the experiments probing the non-equilibrium dynamics emerging when an initially prepared density wave of ultracold atoms in an optical lattice is subjected to a tunnel
coupling and inter-particle interactions. (right) The experimental data is well reproduced by... | {"url":"http://phys.org/news/2012-03-dynamical-quantum-simulator.html","timestamp":"2014-04-18T20:20:17Z","content_type":null,"content_length":"73449","record_id":"<urn:uuid:9284d7fb-fa9d-4127-9131-a1861b6cbe8a>","cc-path":"CC-MAIN-2014-15/segments/1397609538022.19/warc/CC-MAIN-20140416005218-00092-ip-10-147-4-33.ec2.i... |
Martinez Prealgebra Tutor
Find a Martinez Prealgebra Tutor
...After teaching music for several years I started a family and consulted with the Nevada Department of Education while raising my two girls. I am also certified and have taught in special
education, elementary education, middle and high school. In 2001, I... | {"url":"http://www.purplemath.com/Martinez_Prealgebra_tutors.php","timestamp":"2014-04-21T02:36:54Z","content_type":null,"content_length":"23716","record_id":"<urn:uuid:e7590195-1bee-4938-8208-1bbcc9cf1045>","cc-path":"CC-MAIN-2014-15/segments/1398223205137.4/warc/CC-MAIN-20140423032005-00218-ip-10-147-4-33.ec2.interna... |
Proceedings Abstracts of the Twenty-Third International Joint Conference on Artificial Intelligence
A Generalization of SAT and #SAT for Robust Policy Evaluation / 2583
Erik Zawadzki, André Platzer, Geoffery J. Gordon
Both SAT and #SAT can represent difficult problems in seemingly dissimilar areas such as planning, ver... | {"url":"http://ijcai.org/papers13/Abstracts/380.html","timestamp":"2014-04-16T20:51:42Z","content_type":null,"content_length":"1788","record_id":"<urn:uuid:5234d925-9533-43ba-a50e-3bf272fccfd8>","cc-path":"CC-MAIN-2014-15/segments/1397609524644.38/warc/CC-MAIN-20140416005204-00402-ip-10-147-4-33.ec2.internal.warc.gz"} |
A dynamical quantum simulator
Figure: (left) Schematics of the experiments probing the non-equilibrium dynamics emerging when an initially prepared density wave of ultracold atoms in an optical lattice is subjected to a tunnel
coupling and inter-particle interactions. (right) The experimental data is well reproduced by... | {"url":"http://phys.org/news/2012-03-dynamical-quantum-simulator.html","timestamp":"2014-04-18T20:20:17Z","content_type":null,"content_length":"73449","record_id":"<urn:uuid:9284d7fb-fa9d-4127-9131-a1861b6cbe8a>","cc-path":"CC-MAIN-2014-15/segments/1398223204388.12/warc/CC-MAIN-20140423032004-00092-ip-10-147-4-33.ec2.i... |
Multiple Comparisons/Post-Hoc Tests
One-Way Within-Subjects (Repeated Measures) ANOVA
One-way within-subjects ANOVA is also known as repeated measures analysis of variance, randomized-blocks one-way analysis of variance, single-factor within-subjects analysis of variance. As the
subjects are exposed to each condition i... | {"url":"http://www.gigawiz.com/anova3.html","timestamp":"2014-04-18T18:10:40Z","content_type":null,"content_length":"9164","record_id":"<urn:uuid:43bdd8bc-2a77-442e-8fa8-e4ef54658e7b>","cc-path":"CC-MAIN-2014-15/segments/1397609535095.7/warc/CC-MAIN-20140416005215-00251-ip-10-147-4-33.ec2.internal.warc.gz"} |
when is the power of a nonnegative polynomial a sum of squares?
up vote 24 down vote favorite
There are polynomials that are not sum of squares. For example Motzkin gave the example $x^4y^2+x^2y^4+z^6-3x^2y^2z^2$ in 1967.
Is there a real polynomial $f\in{\mathbb{R}}[x_1,\ldots,x_n]$ in several indeterminates that is no... | {"url":"http://mathoverflow.net/questions/53047/when-is-the-power-of-a-nonnegative-polynomial-a-sum-of-squares/53892","timestamp":"2014-04-19T17:31:15Z","content_type":null,"content_length":"70551","record_id":"<urn:uuid:c818dc86-3614-42b0-8845-dc7d509b4b15>","cc-path":"CC-MAIN-2014-15/segments/1398223203841.5/warc/CC-... |
String containing the positional representation of value
Hi! Anyone can help me with that?
An integer can be expressed in a positional representation with different radices. The most common radix is R = 10; other frequently used radices are 2, 8, 16. Any integer larger than 1 can be used
as a radix, but with very large... | {"url":"http://www.php-forum.com/phpforum/viewtopic.php?p=4404626","timestamp":"2014-04-19T01:54:15Z","content_type":null,"content_length":"22474","record_id":"<urn:uuid:230f2df4-346e-417e-81dd-ed09a45b20f2>","cc-path":"CC-MAIN-2014-15/segments/1397609535745.0/warc/CC-MAIN-20140416005215-00168-ip-10-147-4-33.ec2.intern... |
Some basic combinatorics problems
November 27th 2009, 06:35 AM #1
Senior Member
Apr 2009
Some basic combinatorics problems
(I'm not sure if this is in the right forum... since there is no forum that says "combinatorics")
I've just started combinatorics (basic) and just some beginner questions I can't do, if... | {"url":"http://mathhelpforum.com/advanced-algebra/117005-some-basic-combinatorics-problems.html","timestamp":"2014-04-17T19:16:45Z","content_type":null,"content_length":"35833","record_id":"<urn:uuid:b7cc8366-93ae-4f65-90fb-a20d754667b2>","cc-path":"CC-MAIN-2014-15/segments/1397609530895.48/warc/CC-MAIN-20140416005210-... |
More NP-Complete Problems
NP-complete Problems
One of the claims made in the last section was that there are lots and lots of
NP-complete problems which are of interest to the practical computer scientist. Now it is time to fulfill this prophecy and demonstrate this. We shall examine some of the popular NP-complete pro... | {"url":"http://www.cs.uky.edu/~lewis/cs-heuristic/text/class/more-np.html","timestamp":"2014-04-20T20:58:58Z","content_type":null,"content_length":"39923","record_id":"<urn:uuid:b9ecadce-59eb-4470-b6f7-c83d470bc107>","cc-path":"CC-MAIN-2014-15/segments/1397609539230.18/warc/CC-MAIN-20140416005219-00225-ip-10-147-4-33.e... |