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Venturi, Nozzle, & Orifice Meters
Calif. State Univ., Sacramento CE135 Hydraulics Lab
Dept of Civil Engineering Instructor MEH
CONSTRICTION FLOW METERS IN PIPES
Introduce flow measurement by constriction meters
Calibrate a constr... | {"url":"http://www.csus.edu/indiv/h/hollandm/ce135/handouts/FMProced.htm","timestamp":"2014-04-17T04:06:02Z","content_type":null,"content_length":"10369","record_id":"<urn:uuid:fea144a6-7c07-45c1-b732-c2728a7270ee>","cc-path":"CC-MAIN-2014-15/segments/1397609526252.40/warc/CC-MAIN-20140416005206-00173-ip-10-147-4-33.ec... |
two-box model
Continuing from the previous post, suppose we want to look at solutions where the (s) box is close to the short-time-constant (τ[-]) solution, and the (o) box then close to the long-time-constant (τ
[+]) solution. That suggests setting the corresponding inverse time constants perturbatively close to τ[-] ... | {"url":"http://arthur.shumwaysmith.com/life/category/tags/two_box_model","timestamp":"2014-04-18T18:18:42Z","content_type":null,"content_length":"26443","record_id":"<urn:uuid:930a8cdf-7257-4505-afba-f13724bf5eec>","cc-path":"CC-MAIN-2014-15/segments/1397609535095.7/warc/CC-MAIN-20140416005215-00042-ip-10-147-4-33.ec2.... |
Let A be any language
oxeimon I've spent over 3 hours on this
oxeimon and that's today
oxeimon I feel like I just don't have good intuition for functional analysis so far
vinay oxeimon: beyond me, sorry. perhaps someone else can help you.
vinay oxeimon: or perhaps you can hel... | {"url":"http://www.bitchx.com/log/math-f/math-f-05-Feb-2010/math-f-05-Feb-2010-05.php","timestamp":"2014-04-18T05:48:59Z","content_type":null,"content_length":"46044","record_id":"<urn:uuid:723a32a6-d07f-4fe1-9461-f78d1d79a185>","cc-path":"CC-MAIN-2014-15/segments/1397609532573.41/warc/CC-MAIN-20140416005212-00258-ip-1... |
What is the Best Proof of Cauchy’s Integral Theorem?
Related Posts
What is the Best Proof of Cauchy’s Integral Theorem?
Today’s post may look as though I’m going all Terry Tao on you with a long post with lots of mathematical symbols. It’s really about the learning and teaching of Cauchy’s integral theorem from
undergr... | {"url":"http://www.kevinhouston.net/blog/2013/03/what-is-the-best-proof-of-cauchys-integral-theorem/","timestamp":"2014-04-20T05:42:24Z","content_type":null,"content_length":"62364","record_id":"<urn:uuid:689e73d1-f9cd-4ea6-80a0-04320a1cc8e4>","cc-path":"CC-MAIN-2014-15/segments/1397609538022.19/warc/CC-MAIN-2014041600... |
Windsor Mill Algebra Tutors
...From a small business perspective, I have owned and operated a successful consulting business for two years. My roles as a teacher, a director in higher education, and a presenter have enabled
me to be a skilled public speaker. I have presented to groups as large as 150 individuals at... | {"url":"http://www.algebrahelp.com/Windsor_Mill_algebra_tutors.jsp","timestamp":"2014-04-17T16:30:01Z","content_type":null,"content_length":"24937","record_id":"<urn:uuid:28d49a17-1839-4c55-bd8e-69f1782916eb>","cc-path":"CC-MAIN-2014-15/segments/1398223202774.3/warc/CC-MAIN-20140423032002-00276-ip-10-147-4-33.ec2.inter... |
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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Matrix Formula
January 18th 2007, 01:54 PM #1
Jan 2007
Matrix Formula
I have this:
A=any square matrix over any field F
p(X)=any polynomial over F
P=any invertible matrix over F
I need to show that p(B)=inverse(P)p(A)P=P^(-1)p(A)P.
How would I prove this?
No it looks like what I wrote.
... | {"url":"http://mathhelpforum.com/advanced-algebra/10249-matrix-formula.html","timestamp":"2014-04-20T03:53:25Z","content_type":null,"content_length":"38154","record_id":"<urn:uuid:8549977b-97bc-4775-9980-acc75d969fbb>","cc-path":"CC-MAIN-2014-15/segments/1398223207046.13/warc/CC-MAIN-20140423032007-00453-ip-10-147-4-33... |
Rate Control and H.264
Dynamically adjust encoder parameters to achieve a target bitrate
A rate control algorithm dynamically adjusts encoder parameters to achieve a target bitrate. It allocates a budget of bits to each group of pictures, individual picture and/or sub-picture in a video
sequence. Rate control is not a ... | {"url":"http://www.pixeltools.com/rate_control_paper.html","timestamp":"2014-04-20T05:42:42Z","content_type":null,"content_length":"43957","record_id":"<urn:uuid:53b77be8-0ec5-4342-a507-84bb8a8bca71>","cc-path":"CC-MAIN-2014-15/segments/1398223206147.1/warc/CC-MAIN-20140423032006-00039-ip-10-147-4-33.ec2.internal.warc.... |
Posts from July 30, 2009 on Not About Apples
Mathematician-Speak: Impossible
30 July 2009
When I was in college, I spent a lot of time with a certain science major who just couldn’t seem to get the Zen of mathematics. Whenever I would say something like “there is no formula for the roots
of a fifth-degree polynomial”,... | {"url":"http://notaboutapples.wordpress.com/2009/07/30/","timestamp":"2014-04-16T13:14:59Z","content_type":null,"content_length":"22441","record_id":"<urn:uuid:576d5484-3495-43bf-bb6c-83c6c8d7d472>","cc-path":"CC-MAIN-2014-15/segments/1398223203841.5/warc/CC-MAIN-20140423032003-00461-ip-10-147-4-33.ec2.internal.warc.gz... |
Using a Protractor to Draw an Angle
for a printable angle drawing worksheet
This shows how to use a protractor to draw an angle - 42° in this example. We start with a line segment ML. Using a protractor, we draw another line MV at an angle of 42° to it.
InstructionsClick Next or Run to see a demonstration of how to use... | {"url":"http://www.mathopenref.com/constdrawangle.html","timestamp":"2014-04-20T01:02:22Z","content_type":null,"content_length":"9960","record_id":"<urn:uuid:a23d8630-4ea7-4f39-a2c4-05ef318b1fd1>","cc-path":"CC-MAIN-2014-15/segments/1397609537804.4/warc/CC-MAIN-20140416005217-00122-ip-10-147-4-33.ec2.internal.warc.gz"} |
Alameda ACT Tutor
Find an Alameda ACT Tutor
...I am also available to tutor adults who are preparing for the GRE, LSAT, or wish to learn a second language. I'm fluent in French and am currently tutoring a number of kids in French immersion
and French American schools in a variety of subjects, including math. I also... | {"url":"http://www.purplemath.com/alameda_act_tutors.php","timestamp":"2014-04-18T15:55:37Z","content_type":null,"content_length":"23729","record_id":"<urn:uuid:09457af5-cc7b-4da6-9343-7f4bebe9c88a>","cc-path":"CC-MAIN-2014-15/segments/1397609533957.14/warc/CC-MAIN-20140416005213-00144-ip-10-147-4-33.ec2.internal.warc.... |
Upper Darby Calculus Tutor
Find an Upper Darby Calculus Tutor
...Able to help students improve reading comprehension through specific test-taking strategies and pinpoint necessary areas of vocabulary improvement. Scored 800/800 on January 26, 2013 SAT
Writing exam, with a 12 on the essay. Able to help focus student... | {"url":"http://www.purplemath.com/Upper_Darby_calculus_tutors.php","timestamp":"2014-04-16T19:11:58Z","content_type":null,"content_length":"24204","record_id":"<urn:uuid:45aa89cd-19e5-4048-9fb6-f34cb2bce972>","cc-path":"CC-MAIN-2014-15/segments/1397609524644.38/warc/CC-MAIN-20140416005204-00508-ip-10-147-4-33.ec2.inter... |
Question on grading a parallelized algorithm
My supervisor requested that I should specify the theoretical scalability of processing steps using the Big-O notation: O(W(n)/p+T(n)) where W(n) is the parallelizeable part and T(n) is the
serializeable part of a processing step.
I have to admit, although I've searched in v... | {"url":"http://openmp.org/forum/viewtopic.php?f=3&t=1543","timestamp":"2014-04-19T17:01:01Z","content_type":null,"content_length":"22508","record_id":"<urn:uuid:eaf7cafc-eafe-4556-8a54-cf88ae722689>","cc-path":"CC-MAIN-2014-15/segments/1397609537308.32/warc/CC-MAIN-20140416005217-00442-ip-10-147-4-33.ec2.internal.warc.... |
Prime Help For Code Makers: The Sum :: Count On's Online Maths Newspaper
Issue 10 - May 2003
For more than 2000 years since the time of Greek mathematician Erathosthenes researchers have been examining prime numbers. These are the numbers which are divisible only by itself and 1. But until
now it has been difficult to ... | {"url":"http://www.counton.org/thesum/issue-10/issue-10-page-03.htm","timestamp":"2014-04-16T10:36:31Z","content_type":null,"content_length":"8660","record_id":"<urn:uuid:6b543501-043f-4c93-9803-6d3b50c0aaee>","cc-path":"CC-MAIN-2014-15/segments/1397609523265.25/warc/CC-MAIN-20140416005203-00076-ip-10-147-4-33.ec2.inte... |
How many chicken & tri tip roasts do I need to buy for 120 people?
We are bbqing for our church 120 people, They would like Santa Maria style BBQ smoked over Red Oak. We will be using untrimmed Tri Tip roasts & Whole chickens cut in half.
Chosen Answer:
My rule of thumb for how much meat, assuming there will be side di... | {"url":"http://myecigsreviews.com/how-many-chicken-tri-tip-roasts-do-i-need-to-buy-for-120-people/146","timestamp":"2014-04-21T04:32:59Z","content_type":null,"content_length":"23067","record_id":"<urn:uuid:129ba6c2-e735-47e9-b9a7-fcf9556fbf46>","cc-path":"CC-MAIN-2014-15/segments/1397609539493.17/warc/CC-MAIN-201404160... |
Ashtekar variables
3.2 Ashtekar variables
To quantize a constrained canonical theory one can use Dirac’s prescription [153 ] and first represent the classical Poisson algebra of a suitable complete set of basic variables on phase space as an
operator algebra on a Hilbert space, called kinematical. This ignores the cons... | {"url":"http://relativity.livingreviews.org/Articles/lrr-2008-4/articlesu2.html","timestamp":"2014-04-19T22:25:15Z","content_type":null,"content_length":"13889","record_id":"<urn:uuid:f5c10e1b-b3fd-466f-9400-c4aac69a076e>","cc-path":"CC-MAIN-2014-15/segments/1397609537754.12/warc/CC-MAIN-20140416005217-00401-ip-10-147-... |
Trigonometry: Graphs
A graph is simply a drawing of the coordinate plane with points plotted on it. These points all have coordinates (x, y) . In the graph of a function, the y-coordinate has the value f (x) , meaning
the coordinates of the graph of a function are (x, f (x)) . The possible values of x are elements of t... | {"url":"http://www.sparknotes.com/math/trigonometry/graphs/section1.rhtml","timestamp":"2014-04-16T19:26:36Z","content_type":null,"content_length":"52729","record_id":"<urn:uuid:d06acfeb-98e7-4cb8-bfdf-01d689e73ca4>","cc-path":"CC-MAIN-2014-15/segments/1397609524644.38/warc/CC-MAIN-20140416005204-00020-ip-10-147-4-33.e... |
Risk Charts
DATA MINING
Desktop Survival Guide
by Graham Williams
ACTUALLY KNOWN AS CUMULATIVE GAIN CHARTS. PERHAPS LABEL SHOULD BE ``Gain'', NOT ``Risk''.
We have mentioned in passing, particularly in the previous chapter, the idea of a risk chart for evaluating the performance of our models. A risk c... | {"url":"http://www.togaware.com/datamining/survivor/Risk_Charts.html","timestamp":"2014-04-21T07:22:48Z","content_type":null,"content_length":"62978","record_id":"<urn:uuid:a0bddcf0-416d-4fc7-9a01-148581d5f026>","cc-path":"CC-MAIN-2014-15/segments/1398223207046.13/warc/CC-MAIN-20140423032007-00042-ip-10-147-4-33.ec2.in... |
Physics Forums - View Single Post - Need in solving a programm in FOTRAN
i have written a program in FOTRAN for solving a equation [f(x0,y0)= 2*(y**2)+5]
I'm in the learning stage of FOTRAN. So please don't mind if my program has got any silly mistakes.
Please help in executing the program.
program rungekutta
print *,... | {"url":"http://www.physicsforums.com/showpost.php?p=3758398&postcount=1","timestamp":"2014-04-18T23:20:04Z","content_type":null,"content_length":"9763","record_id":"<urn:uuid:fc3f10c6-067b-46cf-8093-0244ba844bf9>","cc-path":"CC-MAIN-2014-15/segments/1397609535535.6/warc/CC-MAIN-20140416005215-00006-ip-10-147-4-33.ec2.i... |
Re: Hooked!
i do not think i know!
The limit operator is just an excuse for doing something you know you can't.
“It's the subject that nobody knows anything about that we can all talk about!” ― Richard Feynman
“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment... | {"url":"http://www.mathisfunforum.com/viewtopic.php?pid=187564","timestamp":"2014-04-17T07:03:59Z","content_type":null,"content_length":"38006","record_id":"<urn:uuid:46bfc72b-55aa-4c28-84fb-73b04254be7a>","cc-path":"CC-MAIN-2014-15/segments/1397609526311.33/warc/CC-MAIN-20140416005206-00328-ip-10-147-4-33.ec2.internal... |
• Computational Number Theory (1) (remove)
The canonical height is an indispensable tool for the study of the arithmetic of abelian varieties. In this dissertation we investigate methods for the explicit computation of canonical heights
on Jacobians of smooth projective curves. Building on an existing algorithm... | {"url":"http://opus.ub.uni-bayreuth.de/opus4-ubbayreuth/solrsearch/index/search/searchtype/authorsearch/author/%22Jan+Steffen+M%C3%BCller%22/start/0/rows/10/subjectfq/Computational+Number+Theory","timestamp":"2014-04-17T03:58:29Z","content_type":null,"content_length":"19217","record_id":"<urn:uuid:fd478f31-0f1f-4f2d-89... |
Is it possible to allow the user to calculate in my textfield?
Posted on Mon, 2013-01-21 15:26
Currently I have a textField that the user enters a value into, for example "100". Then this number is then placed into a formula and a new value is made. Is is possible to allow the user to enter
"100 + 50" into the textFiel... | {"url":"http://developer.coronalabs.com/forum/2013/01/21/it-possible-allow-user-calculate-my-textfield","timestamp":"2014-04-20T21:07:54Z","content_type":null,"content_length":"50096","record_id":"<urn:uuid:09904530-ea05-4808-a1d6-fe3b9668f063>","cc-path":"CC-MAIN-2014-15/segments/1398223210034.18/warc/CC-MAIN-20140423... |
Nyquist, and also ASK
I read this:
Nyquist Interval of the opening chapter Historical Background:
"If the essential frequency range is limited to B cycles per second, 2B was given by Nyquist as the maximum number of code elements per second that could be unambiguously resolved, assuming the peak
interference is less ha... | {"url":"http://www.physicsforums.com/showthread.php?t=721106","timestamp":"2014-04-16T04:23:18Z","content_type":null,"content_length":"57172","record_id":"<urn:uuid:fc25f27f-6a17-4e40-a592-481b5c0f803e>","cc-path":"CC-MAIN-2014-15/segments/1397609521512.15/warc/CC-MAIN-20140416005201-00245-ip-10-147-4-33.ec2.internal.w... |
Posts by
Posts by aman
Total # Posts: 70
To estimate the mean score of those who took the Medical College Admission Test on your campus, you will obtain the scores of an SRS of students. From published information you know that the scores
are approximately Normal with standard deviation about 6.4. You want your ...
un... | {"url":"http://www.jiskha.com/members/profile/posts.cgi?name=aman","timestamp":"2014-04-20T16:34:30Z","content_type":null,"content_length":"17790","record_id":"<urn:uuid:adcbae2f-ad70-4df3-90c1-650199a3b8d3>","cc-path":"CC-MAIN-2014-15/segments/1397609538824.34/warc/CC-MAIN-20140416005218-00422-ip-10-147-4-33.ec2.inter... |
X- and Y-Axis Transformations in SQL Server : Page 2
Create Your Own Aggregate Functions
Using the Y-to-X transformation, you can easily substitute a SQL standard aggregate function or create your own. For example, you can calculate the number of rows in the table and the summary on the
column discount using a regular
... | {"url":"http://www.devx.com/dbzone/Article/30734/0/page/2","timestamp":"2014-04-18T13:18:56Z","content_type":null,"content_length":"76978","record_id":"<urn:uuid:0f496454-4808-4c28-ad81-5b7705707167>","cc-path":"CC-MAIN-2014-15/segments/1397609533689.29/warc/CC-MAIN-20140416005213-00034-ip-10-147-4-33.ec2.internal.warc... |
A Self-Recurrence Method for Generalizing Known Scientific Results
Authors: Florentin Smarandache
A great number of articles widen known scientific results (theorems, inequalities, math/physics/chemical etc. propositions, formulas), and this is due to a simple procedure, of which it is good to
say a few words: Let supp... | {"url":"http://vixra.org/abs/1003.0166","timestamp":"2014-04-21T09:38:22Z","content_type":null,"content_length":"7774","record_id":"<urn:uuid:a2d27439-bbbe-4b0f-98ba-361120636b7d>","cc-path":"CC-MAIN-2014-15/segments/1398223203235.2/warc/CC-MAIN-20140423032003-00066-ip-10-147-4-33.ec2.internal.warc.gz"} |
Variable Selection for Qualitative Interactions
• We are sorry, but NCBI web applications do not support your browser and may not function properly.
More information
Stat Methodol. Author manuscript; available in PMC Jan 30, 2012.
Published in final edited form as:
PMCID: PMC3003934
NIHMSID: NIHMS119246
Variable ... | {"url":"http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3003934/","timestamp":"2014-04-18T11:12:55Z","content_type":null,"content_length":"123980","record_id":"<urn:uuid:196a661a-d53b-4978-b1d3-bb6d264d1865>","cc-path":"CC-MAIN-2014-15/segments/1397609533308.11/warc/CC-MAIN-20140416005213-00661-ip-10-147-4-33.ec2.internal.... |
Dynamics of Entanglement between a Quantum Dot Spin Qubit and a Photon Qubit inside a Semiconductor High-Q Nanocavity
Advances in Mathematical Physics
Volume 2010 (2010), Article ID 342915, 31 pages
Research Article
Dynamics of Entanglement between a Quantum Dot Spin Qubit and a Photon Qubit inside a Semiconductor High... | {"url":"http://www.hindawi.com/journals/amp/2010/342915/","timestamp":"2014-04-17T05:36:51Z","content_type":null,"content_length":"834220","record_id":"<urn:uuid:c259eb87-e84a-4459-8f2a-ae858f5f406f>","cc-path":"CC-MAIN-2014-15/segments/1397609526252.40/warc/CC-MAIN-20140416005206-00127-ip-10-147-4-33.ec2.internal.warc... |
I'm trying to write some mapplets for my professor (in Maple 11/12). Most importantly I need a program for working with group theory. I've looked at the help menus in maple on the group package and
all of its commands, I also read all of the maple programming booklets. Still I have no idea how to do simple things like ... | {"url":"http://www.mapleprimes.com/questions/default.aspx?page=793","timestamp":"2014-04-18T06:04:04Z","content_type":null,"content_length":"96821","record_id":"<urn:uuid:75a3f9e6-3f93-46a8-b8f9-4786f441cccf>","cc-path":"CC-MAIN-2014-15/segments/1397609532573.41/warc/CC-MAIN-20140416005212-00102-ip-10-147-4-33.ec2.inte... |
Nonantum Trigonometry Tutor
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...I have experience teaching, lecturing, and tutoring undergraduate level math and physics courses for both scientists and non-scientists, and am enthusiastic about tutoring at the high school
level. I am currently a research associate in materials phy... | {"url":"http://www.purplemath.com/Nonantum_Trigonometry_tutors.php","timestamp":"2014-04-18T23:24:23Z","content_type":null,"content_length":"24267","record_id":"<urn:uuid:f18f4d50-f521-4385-a8ba-bb720ee37d79>","cc-path":"CC-MAIN-2014-15/segments/1397609535535.6/warc/CC-MAIN-20140416005215-00066-ip-10-147-4-33.ec2.inter... |
Host a Cookie Party Giveaway
I have had a fun week sharing some new cookie recipes with you and have even more to share as we finish off the week. The J.M. Smucker Company has been part of many family’s holiday baking
traditions for generations, and now they want to help you host the perfect cookie party for family a... | {"url":"http://realmomkitchen.com/13396/host-a-cookie-party-giveaway/","timestamp":"2014-04-18T15:40:12Z","content_type":null,"content_length":"110098","record_id":"<urn:uuid:fb640beb-008f-4b9d-8a5f-f068a43f2498>","cc-path":"CC-MAIN-2014-15/segments/1397609533957.14/warc/CC-MAIN-20140416005213-00156-ip-10-147-4-33.ec2.... |
Baseball Prospectus Projections
thinkspin wrote:
swyck wrote:If all the stats are low at more or less the same rate, then its still a useful guide to how players will do compared with each other.
Frankly I dont need a specific player to hit X HRs, I need my team of players to do better as a whole ... | {"url":"http://www.fantasybaseballcafe.com/forums/viewtopic.php?t=176927&start=10","timestamp":"2014-04-18T06:26:46Z","content_type":null,"content_length":"85212","record_id":"<urn:uuid:4793aabe-bae7-4566-bb07-06efee44605f>","cc-path":"CC-MAIN-2014-15/segments/1397609532573.41/warc/CC-MAIN-20140416005212-00538-ip-10-14... |
Scientific computing
"Lighthouse" at IME 2012 - 2016 - strategic research arena
Computational Science and Engineering (CSE) has become an inevitable research area focusing on the development and usage of computational methods to solve problems in science and engineering.
CSE-Scientific Computing that has been awarded f... | {"url":"http://www.ntnu.edu/ime/scientific-computing","timestamp":"2014-04-17T13:11:01Z","content_type":null,"content_length":"29544","record_id":"<urn:uuid:02370f06-6bc6-4e72-a630-82ccade6201c>","cc-path":"CC-MAIN-2014-15/segments/1397609537097.26/warc/CC-MAIN-20140416005217-00408-ip-10-147-4-33.ec2.internal.warc.gz"} |
Irvine, CA Algebra Tutor
Find a Irvine, CA Algebra Tutor
Hey my name is Tim, and I am currently a third year undergraduate student at University of California, Irvine. I am studying biology and have been involved in neurostemcell/Alzheimer's research
for a majority of my time at Irvine. I am very knowledgeable in B... | {"url":"http://www.purplemath.com/irvine_ca_algebra_tutors.php","timestamp":"2014-04-19T02:41:14Z","content_type":null,"content_length":"23822","record_id":"<urn:uuid:cc3ddf3e-b4b5-4fb2-87ff-f1aece7bf3b2>","cc-path":"CC-MAIN-2014-15/segments/1398223205375.6/warc/CC-MAIN-20140423032005-00179-ip-10-147-4-33.ec2.internal.... |
[Numpy-discussion] Scipy dot
Gael Varoquaux gael.varoquaux@normalesup....
Fri Nov 9 02:48:26 CST 2012
On Thu, Nov 08, 2012 at 11:29:19AM -0600, Anthony Scopatz wrote:
> Indeed, there is no reason not to make this available in NumPy.
> +1, I agree, this should be a fix in numpy, not scipy.
I agree.
My point was a bi... | {"url":"http://mail.scipy.org/pipermail/numpy-discussion/2012-November/064400.html","timestamp":"2014-04-17T18:24:33Z","content_type":null,"content_length":"3230","record_id":"<urn:uuid:0587ff03-2d7f-449b-bc35-4cd5653754f8>","cc-path":"CC-MAIN-2014-15/segments/1397609539230.18/warc/CC-MAIN-20140416005219-00332-ip-10-14... |
Open-Source Data Models?
27 May 2009
What could help people share the models they use for generating data so that others can investigate alternative scenarios or presentations of the model (and not just the resulting data)?
For example, in the The Economics of Structured Finance [pdf], Joshua D. Coval, Jakub Jurek, and... | {"url":"http://dam.mellis.org/2009/05/open-source_data_models/","timestamp":"2014-04-18T00:12:13Z","content_type":null,"content_length":"391248","record_id":"<urn:uuid:1aa9826f-0a2d-489e-94b7-5778c83a6dc2>","cc-path":"CC-MAIN-2014-15/segments/1397609532374.24/warc/CC-MAIN-20140416005212-00075-ip-10-147-4-33.ec2.interna... |
Multiplying a Number by 4
Date: 01/11/99 at 07:48:56
From: Randy Peh
Subject: A no. x 4 = no. backwards
Dr. Math:
My math teacher told me to find a few numbers that when multiplied by
4, will give the original number backwards. Can you help me out?
Date: 01/11/99 at 13:44:56
From: Doctor Rob
Subject: Re: A no. x 4 = no... | {"url":"http://mathforum.org/library/drmath/view/57153.html","timestamp":"2014-04-16T04:29:45Z","content_type":null,"content_length":"6855","record_id":"<urn:uuid:520185a2-7fe2-4f2f-8407-fa27e15ac981>","cc-path":"CC-MAIN-2014-15/segments/1398223203841.5/warc/CC-MAIN-20140423032003-00426-ip-10-147-4-33.ec2.internal.warc... |
West Medford Calculus Tutor
Find a West Medford Calculus Tutor
...Everything that we do with computers, from Word, to the internet, every page of the internet, games, etc. Everything on a computer or even a handheld device (cell phone, etc.) has a program on
it. That program was created by a computer programmer, wr... | {"url":"http://www.purplemath.com/West_Medford_Calculus_tutors.php","timestamp":"2014-04-19T00:00:47Z","content_type":null,"content_length":"24178","record_id":"<urn:uuid:1b7174e4-f8dc-4f9b-b1e9-f9bcd701f484>","cc-path":"CC-MAIN-2014-15/segments/1397609535535.6/warc/CC-MAIN-20140416005215-00164-ip-10-147-4-33.ec2.inter... |
Implicit Equation Grapher
Re: Implicit Equation Grapher
It should be able to save to png now (v0.81). Have a try.
"The physicists defer only to mathematicians, and the mathematicians defer only to God ..." - Leon M. Lederman
Re: Implicit Equation Grapher
Hi MathsisFun;
Thanks, worked perfectly.
Last edited by bobbym (2... | {"url":"http://www.mathisfunforum.com/viewtopic.php?pid=121338","timestamp":"2014-04-17T21:23:47Z","content_type":null,"content_length":"50282","record_id":"<urn:uuid:492db098-7765-4878-baca-860f3e8a260b>","cc-path":"CC-MAIN-2014-15/segments/1397609532128.44/warc/CC-MAIN-20140416005212-00133-ip-10-147-4-33.ec2.internal... |
Pfaff, Johann Friedrich ( born December 22, 1765 , Stuttgart, Württemberg—died Württemberg [Germany]—died April 21, 1825 , Halle, Saxony [Germany] ) German mathematician who proposed the first
general method of integrating partial differential equations of the first order.
Pfaff was professor of mathematics at the Un... | {"url":"http://media-3.web.britannica.com/eb-diffs/746/454746-17780-59543.html","timestamp":"2014-04-19T19:36:52Z","content_type":null,"content_length":"1797","record_id":"<urn:uuid:d3ea3162-a425-4933-9326-acd66715a7da>","cc-path":"CC-MAIN-2014-15/segments/1397609537376.43/warc/CC-MAIN-20140416005217-00001-ip-10-147-4-... |
The puzzle
The Goal
The algorithm
Best solution
Program Design
Search Classes
Overview: The "15-puzzle" is a common children's toy. It consists of a square container. In this container, are placed 15 smaller square blocks. The length of each block is about 1/4th the length of
the container. So, the container can accomm... | {"url":"http://goalseeker.sourceforge.net/","timestamp":"2014-04-21T02:15:07Z","content_type":null,"content_length":"6206","record_id":"<urn:uuid:12592121-5a8a-42ad-b8a4-7572c52c9514>","cc-path":"CC-MAIN-2014-15/segments/1397609539447.23/warc/CC-MAIN-20140416005219-00185-ip-10-147-4-33.ec2.internal.warc.gz"} |
Integration Problem
Cheers the quick response.
Where did the numbers come from though?
Is the two there because (2t)² = 4t², and thus 2t was actually the correct "t" to go there... and is it all divided by two because it was actually two variables being used instead of the intended
Last edited by Andorin (2006-01-06 01... | {"url":"http://www.mathisfunforum.com/viewtopic.php?pid=22738","timestamp":"2014-04-18T13:20:00Z","content_type":null,"content_length":"13252","record_id":"<urn:uuid:c932bdd6-1fd6-4aa5-8934-878566740eb7>","cc-path":"CC-MAIN-2014-15/segments/1397609533689.29/warc/CC-MAIN-20140416005213-00487-ip-10-147-4-33.ec2.internal.... |
Vector equation of a line of intersection of three planes
May 4th 2010, 12:38 PM
Vector equation of a line of intersection of three planes
I have been given a system of equations that appears below:
2x - 7y + 5z = 1
6x + 3y - z = -1
-14x - 23y + 13z = 5
I am told to find an vector equation of the li... | {"url":"http://mathhelpforum.com/calculus/143042-vector-equation-line-intersection-three-planes-print.html","timestamp":"2014-04-21T06:55:48Z","content_type":null,"content_length":"6409","record_id":"<urn:uuid:e38367a2-693a-4005-b46f-38bd65a13d11>","cc-path":"CC-MAIN-2014-15/segments/1397609539493.17/warc/CC-MAIN-20140... |
Sum + Round Up
"smartin" > wrote:
> There appears to be an unfortunate binary-to-decimal conversion
> in the expression 10.1 - 10
> The result seen by the formula evaluator is 0.0999...96
Right. Unfortunate; but by no means unusual.
And while that particular binary arithmetic results in an understated value,
there is e... | {"url":"http://www.excelbanter.com/showthread.php?t=241241","timestamp":"2014-04-18T10:49:02Z","content_type":null,"content_length":"57538","record_id":"<urn:uuid:eb8132b6-a3cd-4877-9efb-7d61bafd003e>","cc-path":"CC-MAIN-2014-15/segments/1398223203422.8/warc/CC-MAIN-20140423032003-00492-ip-10-147-4-33.ec2.internal.warc... |
Devlin (repost)
February 26, 2010 pm28 8:09 pm
Two years ago Keith Devlin stirred up a storm by writing that teachers should stop saying “multiplication is repeated addition.” At that time I wrote several posts about it. Essentially the math is a
little interesting, but pointing fingers at teachers is uncalled for. And... | {"url":"http://jd2718.org/2010/02/26/devlin-repost/","timestamp":"2014-04-21T10:05:29Z","content_type":null,"content_length":"117042","record_id":"<urn:uuid:afcafdfb-bd7f-4175-9823-60108428c838>","cc-path":"CC-MAIN-2014-15/segments/1397609539705.42/warc/CC-MAIN-20140416005219-00249-ip-10-147-4-33.ec2.internal.warc.gz"} |
What Entropy IsWhat Entropy Is
The Second Law of Thermodynamics probably produces more confusion in the general public than most other physical laws that have percolated themselves into the collective consciousness. Not the least
of these are all the seemingly disconnected ways of saying it, which vary in accuracy. Dis... | {"url":"http://scienceblogs.com/builtonfacts/2009/01/29/what-entropy-is/","timestamp":"2014-04-16T16:35:07Z","content_type":null,"content_length":"57153","record_id":"<urn:uuid:3aefcfc7-fe3f-4672-ba2b-1821d5040c95>","cc-path":"CC-MAIN-2014-15/segments/1397609524259.30/warc/CC-MAIN-20140416005204-00259-ip-10-147-4-33.ec... |
Special Relativity and Conic Sections - Interpretation of the Experiment
Mathwright Microworld for this page
In order to understand what the experiment means, we must write down the equation of the curve defined by projecting the wavefron... | {"url":"http://www.maa.org/publications/periodicals/loci/joma/special-relativity-and-conic-sections-interpretation-of-the-experiment","timestamp":"2014-04-24T18:12:57Z","content_type":null,"content_length":"119265","record_id":"<urn:uuid:d56d2041-31ac-4f7e-b80f-d3cd348bc096>","cc-path":"CC-MAIN-2014-15/segments/1398223... |
Hadamard-like inequalites for positive definite symmetric matrices
up vote 5 down vote favorite
Let $S$ be any positive semi-definite symmetric matrix (Hermitian psd matrices work as well). The Hadamard inequality is that $$\det S\le\prod_{i=1}^n s_{ii}.$$ My question is whether there are some
other upper bounds of $\d... | {"url":"http://mathoverflow.net/questions/105697/hadamard-like-inequalites-for-positive-definite-symmetric-matrices/105707","timestamp":"2014-04-20T03:53:34Z","content_type":null,"content_length":"56833","record_id":"<urn:uuid:f6b993ab-ccf8-426b-bebe-5bb84545e43d>","cc-path":"CC-MAIN-2014-15/segments/1397609537864.21/w... |
Bad math teacher
Math teacher
who caters only to the
s of
s; such a
assumes that his or her
s aren't interested in
how math
works, they just want to be able to use it. This
of how to teach math is relatively new, being the result of the advent of
s that don't requre a
feel for the numbers
to use, particularly the
. Tea... | {"url":"http://everything2.com/title/Bad+math+teacher","timestamp":"2014-04-16T11:32:55Z","content_type":null,"content_length":"24764","record_id":"<urn:uuid:7abdc727-89c3-440d-a24e-bc6a23012e3c>","cc-path":"CC-MAIN-2014-15/segments/1398223202457.0/warc/CC-MAIN-20140423032002-00018-ip-10-147-4-33.ec2.internal.warc.gz"} |
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just to make sure, this is correct, yes? solve 0 = x^2 + 10x +... | {"url":"http://openstudy.com/updates/5143c1dde4b04cdfc581fabf","timestamp":"2014-04-20T18:43:21Z","content_type":null,"content_length":"85885","record_id":"<urn:uuid:cb6bbeed-e2e7-431e-b948-5e5fd561a905>","cc-path":"CC-MAIN-2014-15/segments/1397609539066.13/warc/CC-MAIN-20140416005219-00548-ip-10-147-4-33.ec2.internal.... |
Favorite Theorems: Combinatorial NP-Complete Problems
April Edition
If Cook made the P versus NP question interesting to logicians, Karp made the question important to everyone else.
Richard Karp, Reducibility Among Combinatorial Problems, Proceedings of a Symposium on the Complexity of... | {"url":"http://blog.computationalcomplexity.org/2005/05/favorite-theorems-combinatorial-np.html","timestamp":"2014-04-18T02:58:40Z","content_type":null,"content_length":"157326","record_id":"<urn:uuid:b93a9672-f681-4f2f-9bab-6fd51a744a0c>","cc-path":"CC-MAIN-2014-15/segments/1397609532480.36/warc/CC-MAIN-20140416005212... |
Reconcilable differences: Study uncovers the common ground of scientific opposites
Public release date: 30-Jan-2013
[ | E-mail ]
Contact: Morgan Kelly
Princeton University
Reconcilable differences: Study uncovers the common ground of scientific opposites
Searching for common elements in seemingly incompatible scienti... | {"url":"http://www.eurekalert.org/pub_releases/2013-01/pu-rds013013.php","timestamp":"2014-04-16T10:17:49Z","content_type":null,"content_length":"11895","record_id":"<urn:uuid:13bab547-8758-4773-9385-a8fab1076f93>","cc-path":"CC-MAIN-2014-15/segments/1397609523265.25/warc/CC-MAIN-20140416005203-00600-ip-10-147-4-33.ec2... |
fixed set (plural fixed sets)
1. (mathematics) A set which is unchanged by a function or other mapping. Formally: a set, S, is a fixed set of a function, f, if and only if for all x in S, f(x)=x.
Last modified on 20 June 2013, at 21:04 | {"url":"http://en.m.wiktionary.org/wiki/fixed_set","timestamp":"2014-04-18T05:32:56Z","content_type":null,"content_length":"15218","record_id":"<urn:uuid:79565d5f-efd4-4942-a9f3-86fbb4d1fce9>","cc-path":"CC-MAIN-2014-15/segments/1397609532573.41/warc/CC-MAIN-20140416005212-00425-ip-10-147-4-33.ec2.internal.warc.gz"} |
STAT W3103x Mathematical Methods for Statistics 6 pts. Prerequisites: MATH V1101 or permission of the instructor. A fast-paced coverage of those aspects of the differential and integral calculus of
one and several variables and of the linear algebra required for the core courses in the Statistics major. The mathematica... | {"url":"http://apps.college.columbia.edu/unify/bulletinSearch.php?toggleView=open&school=CC&courseIdentifierVar=STATW3103&header=www.college.columbia.edu%2Finclude%2Fpopup_header.php&footer=www.college.columbia.edu%2Finclude%2Fpopup_footer.php","timestamp":"2014-04-19T22:07:04Z","content_type":null,"content_length":"39... |
ANSWER: 4
This requires some high school algebra. First, let's call the two numbers X and Y, where X is the larger number. We therefore are given that X-Y=1 and X*Y=1. We can then use the first equation to
solve for X in terms of Y (X=Y+1) and plug this value of X into the second equation yielding a quadratic equation ... | {"url":"http://www.nsa.gov/kids/games/games00033.shtml","timestamp":"2014-04-20T05:43:45Z","content_type":null,"content_length":"6501","record_id":"<urn:uuid:8a8b96c3-5413-4949-884d-cea67b322008>","cc-path":"CC-MAIN-2014-15/segments/1398223203422.8/warc/CC-MAIN-20140423032003-00044-ip-10-147-4-33.ec2.internal.warc.gz"} |
First Date With Math
By Steve Sullivan
We go in search of actuaries’ eureka moment, the moment they
first knew they had a special thing for numbers.
... | {"url":"http://www.contingencies.org/julaug06/first_date_0706.asp","timestamp":"2014-04-17T01:17:42Z","content_type":null,"content_length":"34293","record_id":"<urn:uuid:8fb2b4a7-79b0-4015-8cd9-d6df712b99eb>","cc-path":"CC-MAIN-2014-15/segments/1398223206647.11/warc/CC-MAIN-20140423032006-00164-ip-10-147-4-33.ec2.inter... |
Pacific Institute for the Mathematical Sciences - PIMS
Greetings from PIMS!
August 2013
5-9 August - Mathematical Congress of the Americas in
Guanajuato, Mexico
8-10 August - Workshop on Numerical Linear Algebra and
Optimization at the University of British Columbia
14-16 August - Selected Areas in Cryptography (SAC) a... | {"url":"http://www.pims.math.ca/node/7947","timestamp":"2014-04-17T21:31:57Z","content_type":null,"content_length":"16154","record_id":"<urn:uuid:4b8ec2a7-8377-4cc8-928c-ef96f1e0b185>","cc-path":"CC-MAIN-2014-15/segments/1398223204388.12/warc/CC-MAIN-20140423032004-00112-ip-10-147-4-33.ec2.internal.warc.gz"} |
What's Up In Finance? . For Educators . Lesson 1 | Thirteen/WNET
SELECT OTHER LESSON PLANS
1. Open the discussion by asking if any of the students have saved money, or maintain a budget of any kind.
2. Write the following terms and their definitions on the board: budget, income, expense, savings, and debt. (see... | {"url":"http://www.thirteen.org/finance/educators/lesson1b.html","timestamp":"2014-04-17T01:03:58Z","content_type":null,"content_length":"14410","record_id":"<urn:uuid:9eb30354-104d-4a9c-8f73-01df74066c17>","cc-path":"CC-MAIN-2014-15/segments/1397609526102.3/warc/CC-MAIN-20140416005206-00610-ip-10-147-4-33.ec2.internal... |
XPath Exercises - RRK-LWein
In the following exercises, you use the syntax and semantics of XPath as is given in the slides. Not as in the XPath book.
1. Change the definition of Regular XPath as described above (only allow * on atoms).
2. Real XPath also has the following and preceding axis. Show that this is syntac... | {"url":"https://sites.google.com/site/rrklwein/home/exam-3/xpath-exercises","timestamp":"2014-04-19T07:35:41Z","content_type":null,"content_length":"26120","record_id":"<urn:uuid:e6eaa14e-5f13-4e1a-99ec-2e8eb8e2fc3b>","cc-path":"CC-MAIN-2014-15/segments/1397609536300.49/warc/CC-MAIN-20140416005216-00413-ip-10-147-4-33.... |
Journal of the Brazilian Society of Mechanical Sciences and Engineering
Services on Demand
Related links
Print version ISSN 1678-5878
J. Braz. Soc. Mech. Sci. & Eng. vol.27 no.3 Rio de Janeiro July/Sept. 2005
... | {"url":"http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-58782005000300007&lng=en&nrm=iso","timestamp":"2014-04-20T06:44:07Z","content_type":null,"content_length":"100548","record_id":"<urn:uuid:617e2bb7-4d81-4f2e-badc-89a1c9fb4301>","cc-path":"CC-MAIN-2014-15/segments/1397609538022.19/warc/CC-MAIN-20140416... |
Re: Splitting Numeric to separate Sum from Product
Re: Splitting Numeric to separate Sum from Product
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
On 09/12/2011 09:43 PM, Ben Hutchison wrote:
> On Fri, Sep 9, 2011 at 11:53 AM, Tom Switzer wrote:
>> Perhaps a trade-off could be to create a few new traits. Something mo... | {"url":"http://www.scala-lang.org/old/node/10915","timestamp":"2014-04-20T05:45:02Z","content_type":null,"content_length":"38077","record_id":"<urn:uuid:75edec37-9f34-4408-bccd-0ada961bc47d>","cc-path":"CC-MAIN-2014-15/segments/1397609538022.19/warc/CC-MAIN-20140416005218-00445-ip-10-147-4-33.ec2.internal.warc.gz"} |
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I need help (about fortran languange).., please check my scrip... | {"url":"http://openstudy.com/updates/51160f20e4b09e16c5c8539b","timestamp":"2014-04-16T19:59:11Z","content_type":null,"content_length":"30209","record_id":"<urn:uuid:7a527294-4509-4d7f-8576-95b9eea886c1>","cc-path":"CC-MAIN-2014-15/segments/1398223206647.11/warc/CC-MAIN-20140423032006-00212-ip-10-147-4-33.ec2.internal.... |
The Gaussian Correlation Conjecture
The Gaussian correlation conjecture is a simple looking inequality which, nevertheless, remains unproven. The standard n-dimensional Gaussian measure is
$\displaystyle \mu_n(A) = (2\pi)^{-n/2}\int_A\exp(-\frac{1}{2}x^2)\... | {"url":"http://almostsure.wordpress.com/2009/09/27/the-gaussian-correlation-conjecture/","timestamp":"2014-04-20T11:01:31Z","content_type":null,"content_length":"77435","record_id":"<urn:uuid:908e5c20-4666-4a20-8143-ae9df6e705d1>","cc-path":"CC-MAIN-2014-15/segments/1397609538423.10/warc/CC-MAIN-20140416005218-00123-ip... |
maths>>>>>>>>>>>>>>>>>>. 1/ do we need maths in programming???? 2/ has maths got any thing to do with programming and code?
1. To some extent, yes. 2. This tutorial gives an example: http://www.cprogramming.com/tutorial...aternions.html
yes you need basic maths im crap at maths and good a programming theres a big diffe... | {"url":"http://cboard.cprogramming.com/cplusplus-programming/46967-maths-printable-thread.html","timestamp":"2014-04-19T09:55:45Z","content_type":null,"content_length":"7699","record_id":"<urn:uuid:19869c94-ac58-44d1-9ac8-720a94c0519f>","cc-path":"CC-MAIN-2014-15/segments/1397609537097.26/warc/CC-MAIN-20140416005217-00... |
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Inequalities between distance–based graph polynomials
I. Gutman, Olga Miljkovic, B. ZHOU and M. Petrovic
Faculty of Science, University of Kragujevac, P. O. Box 60, 34000 Kragujevac, Serbia
Department of Mathematics, Sout... | {"url":"http://www.emis.de/journals/BSANU/31/5.html","timestamp":"2014-04-19T07:09:54Z","content_type":null,"content_length":"5687","record_id":"<urn:uuid:95c5f250-0aa7-4341-a9d4-5280a2b83757>","cc-path":"CC-MAIN-2014-15/segments/1397609536300.49/warc/CC-MAIN-20140416005216-00380-ip-10-147-4-33.ec2.internal.warc.gz"} |
Bobak Nazer
O. Ordentlich, U. Erez, and B. Nazer,
The Approximate Sum Capacity of the Symmetric K-User Gaussian Interference Channel
, Submitted to the IEEE Transactions on Information Theory, June 2012.
J. Zhan, B. Nazer, U. Erez, and M. Gastpar,
Integer-Forcing Linear Receivers
, Revised for the IEEE Transactions on ... | {"url":"http://iss.bu.edu/bobak/pubs.html","timestamp":"2014-04-17T18:23:51Z","content_type":null,"content_length":"11305","record_id":"<urn:uuid:922a579a-d1dc-47b7-be19-e71e5c9a44dc>","cc-path":"CC-MAIN-2014-15/segments/1397609530895.48/warc/CC-MAIN-20140416005210-00405-ip-10-147-4-33.ec2.internal.warc.gz"} |
Re: save file with coefficient statistics with logistic regressions and using Spss for conditional maximum likelyhood
tobiasbroeders@xxxxxxxxx wrote:
Help needed.
Currently I am writing my master thesis about Merger and Acquisitions
(M&A) and in this context I am using SPSS for a Logistic regression.
---- s... | {"url":"http://sci.tech-archive.net/Archive/sci.stat.math/2006-06/msg00322.html","timestamp":"2014-04-18T18:49:33Z","content_type":null,"content_length":"11208","record_id":"<urn:uuid:6f83ecd9-db83-484f-b549-5a0e99a9c62b>","cc-path":"CC-MAIN-2014-15/segments/1397609535095.7/warc/CC-MAIN-20140416005215-00145-ip-10-147-4... |
This course is taught through presentation and analysis of a sequence of papers.
Assessment will be in 3 forms.
1. There will be a tick for each week, for attendance & participation in discussion.
2. There will be 3 assessed essays, to be submitted at the end of week 4, 8 and the start of Lent term. The student is aske... | {"url":"http://www.cl.cam.ac.uk/teaching/0910/R02/assess.html","timestamp":"2014-04-18T05:34:26Z","content_type":null,"content_length":"1087","record_id":"<urn:uuid:e85e93dc-093c-4bf1-bb4b-0767cccd453d>","cc-path":"CC-MAIN-2014-15/segments/1398223206118.10/warc/CC-MAIN-20140423032006-00204-ip-10-147-4-33.ec2.internal.w... |
La Habra Geometry Tutor
...Many of my students have gone from D's with no understanding to A's with the ability to peer tutor their classmates. It is always wonderful to enter a student's home and hear "I got an A on the
test!" or "the teacher says I am her most improved student." I look for the concepts that stude... | {"url":"http://www.purplemath.com/la_habra_ca_geometry_tutors.php","timestamp":"2014-04-17T20:02:11Z","content_type":null,"content_length":"23972","record_id":"<urn:uuid:4338dd19-4bf3-4bd8-8161-eabf726308ed>","cc-path":"CC-MAIN-2014-15/segments/1397609530895.48/warc/CC-MAIN-20140416005210-00188-ip-10-147-4-33.ec2.inter... |
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is replying to Can someone tell me what button the professor is hitting...
• Teamwork 19 T... | {"url":"http://openstudy.com/users/eemajor12/asked","timestamp":"2014-04-20T18:41:12Z","content_type":null,"content_length":"62812","record_id":"<urn:uuid:e5cf3ad5-aff2-4c53-888b-0ff054ad639b>","cc-path":"CC-MAIN-2014-15/segments/1397609539066.13/warc/CC-MAIN-20140416005219-00054-ip-10-147-4-33.ec2.internal.warc.gz"} |
Glendon, PA Precalculus Tutor
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...The concepts are a bit more challenging, but I've learned how to make them clear. Trigonometry is a big part of the Precalculus course I've been teaching at our college. The Trig functions are
also a big part of engineering.
11 Subjects: includ... | {"url":"http://www.purplemath.com/Glendon_PA_precalculus_tutors.php","timestamp":"2014-04-18T11:35:38Z","content_type":null,"content_length":"24169","record_id":"<urn:uuid:d3be48cc-bad6-4443-857a-9a67b6ea0e7a>","cc-path":"CC-MAIN-2014-15/segments/1398223205375.6/warc/CC-MAIN-20140423032005-00461-ip-10-147-4-33.ec2.inte... |
Pure Math, Pure Joy
1422555 story
Posted by
from the msri-loves-company dept.
e271828 writes
"The New York Times is carrying a nice little piece entitled Pure Math, Pure Joy about the beauty and applicability of pure math as carried out at the Mathematical Sciences Research Institute. There
is an accompanying slidesh... | {"url":"http://science.slashdot.org/story/03/06/29/183258/pure-math-pure-joy?sdsrc=nextbtmnext","timestamp":"2014-04-17T21:36:46Z","content_type":null,"content_length":"318600","record_id":"<urn:uuid:bc0fa4df-b534-4007-baf0-b77ea5edbac6>","cc-path":"CC-MAIN-2014-15/segments/1397609532128.44/warc/CC-MAIN-20140416005212-... |
Reference for Lie coalgebras needed
up vote 6 down vote favorite
In the Wikipeadia article
on Lie coalgebras an author said: "... Just as the exterior algebra of vector fields on a manifold form a Lie algebra [...], the de Rham complex of differential forms on a manifold form a Lie
coalgebra ...". Unfortunately the art... | {"url":"http://mathoverflow.net/questions/92436/reference-for-lie-coalgebras-needed","timestamp":"2014-04-20T04:04:48Z","content_type":null,"content_length":"50563","record_id":"<urn:uuid:aee635c2-fb9c-4518-a76f-ccc5003fd721>","cc-path":"CC-MAIN-2014-15/segments/1397609537864.21/warc/CC-MAIN-20140416005217-00320-ip-10-... |
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Second International Conference on Algebra
             
Contemporary This book contains papers presented at the Second International Conference on Algebra, held in Barnaul in August 1991 in honor of the memory of A. I. Shirshov (1921-1981). Many of
Mathemati... | {"url":"http://ams.org/bookstore?fn=20&arg1=conmseries&ikey=CONM-184","timestamp":"2014-04-17T20:28:57Z","content_type":null,"content_length":"18115","record_id":"<urn:uuid:1e28eef6-d6bd-4f9d-a849-9535d4725d1d>","cc-path":"CC-MAIN-2014-15/segments/1397609530895.48/warc/CC-MAIN-20140416005210-00379-ip-10-147-4-33.ec2.in... |
Factoring large integers with the quadratic sieve
, 2001
"... Let X be a non-empty set. Let f : Z 2 ! X. All vectors which occur have integer coecients, and for ~a = (a 1 ; a 2 ), ~ b = (b 1 ; b 2 ) we write ~a ~ b or ~a < ~ b if a j b j or a j < b j for j
= 1; 2, respectively. Let ~ b > ~ 0. A ~ b-block is a set of th... | {"url":"http://citeseerx.ist.psu.edu/showciting?cid=1789584","timestamp":"2014-04-20T01:38:02Z","content_type":null,"content_length":"20347","record_id":"<urn:uuid:b39a01e6-e14a-47a1-96e3-3d047815ce8d>","cc-path":"CC-MAIN-2014-15/segments/1397609537804.4/warc/CC-MAIN-20140416005217-00099-ip-10-147-4-33.ec2.internal.war... |
Whatever Floats Your Boat
Your use of this web site or any of its content or software indicates your agreement to be bound by these Terms of Participation.
Copyright © 2014, Oracle and/or its affiliates. All rights reserved. Oracle and Java are registered trademarks of Oracle and/or its affiliates. Other names may be t... | {"url":"https://www.java.net/print/833194","timestamp":"2014-04-19T21:04:22Z","content_type":null,"content_length":"10990","record_id":"<urn:uuid:2e035d62-49c2-4c7a-8661-c6eeb6f94514>","cc-path":"CC-MAIN-2014-15/segments/1397609537376.43/warc/CC-MAIN-20140416005217-00189-ip-10-147-4-33.ec2.internal.warc.gz"} |
Problems solving some inequalities questions
March 29th 2011, 08:03 AM
Problems solving some inequalities questions
a) $\frac{\2x+3}{3} \leq x-5$
I did this:
$\frac{\3(2x+3)}{3} \leq 3(x-5)$
$6x+9 \leq 3x-15$
$6x-3x \leq -15-9$
$3x \leq -24$
$x \leq -8$
$(inf , -8]$
however the answe... | {"url":"http://mathhelpforum.com/algebra/176190-problems-solving-some-inequalities-questions-print.html","timestamp":"2014-04-18T21:44:41Z","content_type":null,"content_length":"26816","record_id":"<urn:uuid:e97ac706-a8a8-40f0-9227-1e1674cce501>","cc-path":"CC-MAIN-2014-15/segments/1397609535095.9/warc/CC-MAIN-20140416... |
Writing Numbers in Word Form
In Five White, the students have been learning how to write large numbers in word form. The students in Five White have learnt that inside each large group we read the numbers as hundreds, tens and
For example:
63 497 – Sixty-three thousand, four hundred and ninety-seven.
226 443 – Two hu... | {"url":"http://fivewhite2013.wordpress.com/2013/02/18/writing-numbers-in-word-form/","timestamp":"2014-04-18T23:15:36Z","content_type":null,"content_length":"138814","record_id":"<urn:uuid:ba29ff4d-97aa-49d5-a48d-2925833849c9>","cc-path":"CC-MAIN-2014-15/segments/1397609535535.6/warc/CC-MAIN-20140416005215-00205-ip-10-... |
20th WCP: Do Sentences Have Identity?
1. What is equiformity?
Some logicians have rejected propositions in favour of sentences, arguing in particular that there is no satisfactory identity criterion for propositions (cf. Quine, 1970). But is there one for
sentences? The idea that logic is about sentences rather than pr... | {"url":"http://www.bu.edu/wcp/Papers/Logi/LogiBeza.htm","timestamp":"2014-04-19T18:41:08Z","content_type":null,"content_length":"32948","record_id":"<urn:uuid:36dfdc56-6b78-422c-a7d9-c05ad7c94964>","cc-path":"CC-MAIN-2014-15/segments/1397609537308.32/warc/CC-MAIN-20140416005217-00387-ip-10-147-4-33.ec2.internal.warc.gz... |
Excel Statistics for SEO and Data Analysis
This post was originally in YouMoz, and was promoted to the main blog because it provides great value and interest to our community.
The author’s views are entirely his or her own and may not reflect the views of Moz.
Everybody has probably already realized that there is almos... | {"url":"http://moz.com/blog/excel-statistics-for-seo-and-data-analysis","timestamp":"2014-04-17T21:47:29Z","content_type":null,"content_length":"356338","record_id":"<urn:uuid:dbde358c-2d9b-48a3-a337-6c7e693785c2>","cc-path":"CC-MAIN-2014-15/segments/1397609532128.44/warc/CC-MAIN-20140416005212-00257-ip-10-147-4-33.ec2... |
La Habra Geometry Tutor
...Many of my students have gone from D's with no understanding to A's with the ability to peer tutor their classmates. It is always wonderful to enter a student's home and hear "I got an A on the
test!" or "the teacher says I am her most improved student." I look for the concepts that stude... | {"url":"http://www.purplemath.com/la_habra_ca_geometry_tutors.php","timestamp":"2014-04-17T20:02:11Z","content_type":null,"content_length":"23972","record_id":"<urn:uuid:4338dd19-4bf3-4bd8-8161-eabf726308ed>","cc-path":"CC-MAIN-2014-15/segments/1398223205137.4/warc/CC-MAIN-20140423032005-00188-ip-10-147-4-33.ec2.intern... |
Stability experimental
Maintainer Uwe Schmidt (uwe@fh-wedel.de)
Safe Haskell None
A map-fold function for interleaved map and fold. The elements of a list are processed like in a binary tree.
• mapFoldBinary :: (a -> b) -> (b -> b -> b) -> [a] -> b
• mapFoldBinaryM :: Monad m => (a -> m b) -> (b -> b -> m b) ... | {"url":"http://hackage.haskell.org/package/Holumbus-Searchengine-1.2.3/docs/Control-Sequential-MapFoldBinary.html","timestamp":"2014-04-17T07:11:28Z","content_type":null,"content_length":"3536","record_id":"<urn:uuid:b5defdae-365a-40c2-99c3-b2a61d1261be>","cc-path":"CC-MAIN-2014-15/segments/1397609526311.33/warc/CC-MAI... |
FOM: Final reply to Hayes on proofs
Joe Shipman shipman at savera.com
Tue Mar 2 16:29:35 EST 1999
>No, that is exactly what I mean. A proof, strictly speaking, should be
>completely formalised and mechanically checkable. I believe this is
>essentially the accepted standard of a completely rigorous proof throughout
>mos... | {"url":"http://www.cs.nyu.edu/pipermail/fom/1999-March/002706.html","timestamp":"2014-04-17T07:42:20Z","content_type":null,"content_length":"4290","record_id":"<urn:uuid:1a3c34f3-7c7b-4e1b-b3d2-f303cc9ccf49>","cc-path":"CC-MAIN-2014-15/segments/1398223206147.1/warc/CC-MAIN-20140423032006-00183-ip-10-147-4-33.ec2.intern... |
KL divergence in R using base 2 logarithm
up vote 1 down vote favorite
I want to find JS divergence of two distributions in R. wikipedia says that Jensen–Shannon divergence is bounded by 1, given that one uses the base 2 logarithm. I want that my resulting JS divergence
lies between 0 and 1. I am using KLdiv function i... | {"url":"http://stackoverflow.com/questions/11282385/kl-divergence-in-r-using-base-2-logarithm","timestamp":"2014-04-19T02:30:24Z","content_type":null,"content_length":"70658","record_id":"<urn:uuid:f4e97e20-b7a5-4502-9524-cd7908318ce6>","cc-path":"CC-MAIN-2014-15/segments/1397609535745.0/warc/CC-MAIN-20140416005215-002... |
interval type
interval type
The interval type is an axiomatization of the cellular interval object in the context of homotopy type theory.
As a higher inductive type, the interval is given by
Inductive Interval : Type
| left : Interval
| right : Interval
| segment : Id Interval left right
This says that the type ... | {"url":"http://ncatlab.org/nlab/show/interval%20type","timestamp":"2014-04-21T02:00:48Z","content_type":null,"content_length":"31029","record_id":"<urn:uuid:2dd14978-9c4e-4923-8f61-8f1c765162a4>","cc-path":"CC-MAIN-2014-15/segments/1397609539447.23/warc/CC-MAIN-20140416005219-00177-ip-10-147-4-33.ec2.internal.warc.gz"} |
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Graph on a number line -6/5 I'm just not sure how to do this e... | {"url":"http://openstudy.com/updates/50ad10a2e4b09749ccab9fb5","timestamp":"2014-04-19T07:12:08Z","content_type":null,"content_length":"51068","record_id":"<urn:uuid:bf8e6810-1d6d-4beb-b75f-9b1134670be6>","cc-path":"CC-MAIN-2014-15/segments/1397609536300.49/warc/CC-MAIN-20140416005216-00522-ip-10-147-4-33.ec2.internal.... |
The Science of Programming/Lather, Rinse, Repeat
From Wikibooks, open books for an open world
As CME, Chapter 7 notes, suppose:
$y = f(x)$
That is to say, y is some function of x. If that is so, then:
is sometimes denoted:
with the apostrophe indicating differentiation.
Because of Sway's liberal views on naming vari... | {"url":"http://en.wikibooks.org/wiki/The_Science_of_Programming/Lather,_Rinse,_Repeat","timestamp":"2014-04-21T02:54:20Z","content_type":null,"content_length":"37762","record_id":"<urn:uuid:78c13c5d-91bf-4fef-b391-3429e264a1a6>","cc-path":"CC-MAIN-2014-15/segments/1397609539447.23/warc/CC-MAIN-20140416005219-00269-ip-1... |
Calculus - Integration
January 9th 2010, 10:03 PM #16
Jan 2010
must tan be part of the solution, I haven't learned that yet and it is hard for me to grasp! Will I not get the solution if I do not use arctan or take a trigonometric approach. I have only gone
as far as intgrating sin and cos back and forth.
... | {"url":"http://mathhelpforum.com/calculus/123082-calculus-integration-2.html","timestamp":"2014-04-19T02:49:17Z","content_type":null,"content_length":"45242","record_id":"<urn:uuid:e8a06073-e873-4323-84bf-f8e7e69e5b02>","cc-path":"CC-MAIN-2014-15/segments/1397609535745.0/warc/CC-MAIN-20140416005215-00062-ip-10-147-4-33... |
Resources and services for Utah Higher Education faculty and students such as Canvas and collegEmedia.
Curriculum Tie: Summary:
Activities help students learn the sequence of metric prefixes and to make conversions
• Mathematics within the metric s... | {"url":"http://www.uen.org/Lessonplan/preview.cgi?LPid=21571","timestamp":"2014-04-17T12:30:35Z","content_type":null,"content_length":"59784","record_id":"<urn:uuid:62379f13-c667-4e72-9115-62e22ebe1e11>","cc-path":"CC-MAIN-2014-15/segments/1398223202774.3/warc/CC-MAIN-20140423032002-00501-ip-10-147-4-33.ec2.internal.wa... |
How to show that a locally diffeomorphic mapping from R to R is open?
I thought of this some more:
Let R be the copy in thedomain and R' in the codomain
If every x has a 'hood Ux ( we can take an open 'hood) and a local diffeo f_x : Ux-->f(Ux)., then f(Ux)
is open in R' . Then we only need to find a cover of f(R) by ba... | {"url":"http://www.physicsforums.com/showthread.php?p=4289549","timestamp":"2014-04-19T09:42:10Z","content_type":null,"content_length":"32873","record_id":"<urn:uuid:7250be3c-b880-4acf-934f-fa95015c2429>","cc-path":"CC-MAIN-2014-15/segments/1397609537097.26/warc/CC-MAIN-20140416005217-00219-ip-10-147-4-33.ec2.internal.... |
Binary Tree
Binary Tree
I coded a binary tree with basic functions: insert, display, search and clear. The clear() function isn't working properly. I want to delete all the nodes. So I modified the display function:
// header files
struct tree
int dat;
struct tree *left, *right;
} *root, *temp;
... | {"url":"http://cboard.cprogramming.com/c-programming/95007-binary-tree-printable-thread.html","timestamp":"2014-04-20T00:08:33Z","content_type":null,"content_length":"19951","record_id":"<urn:uuid:a6f7e330-155a-4a43-bff7-687571ae0b98>","cc-path":"CC-MAIN-2014-15/segments/1397609537754.12/warc/CC-MAIN-20140416005217-002... |
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= Preview Document = Member Document = Pin to Pinterest
Bookmarks list U.S. units of length (inch, foot, yard, mile) with abbreviations
• Categorize units of measurement and their uses in the home on this worksheet. (We use a KILOGRAM to measure...)
Seven colorful math mats for measurement and data practice. ... | {"url":"http://www.abcteach.com/directory/subjects-math-measurement-644-7-2","timestamp":"2014-04-19T07:21:39Z","content_type":null,"content_length":"134176","record_id":"<urn:uuid:e41f8e0b-d3db-4fa0-8b06-3ada48cbf9b6>","cc-path":"CC-MAIN-2014-15/segments/1398223211700.16/warc/CC-MAIN-20140423032011-00442-ip-10-147-4-3... |
On the Category of Schemes
Zhaohua Luo
1. Unipotent Maps and Normal Monos
Consider a fixed category C with a strict initial object. Two maps u: U --> X and v: V --> X are disjoint if the initial object is the pullback of u and... | {"url":"http://www.geometry.net/cg/scheme.html","timestamp":"2014-04-19T22:06:51Z","content_type":null,"content_length":"14349","record_id":"<urn:uuid:50cb7970-4762-4b20-aa5d-814bdb3d8519>","cc-path":"CC-MAIN-2014-15/segments/1397609537754.12/warc/CC-MAIN-20140416005217-00343-ip-10-147-4-33.ec2.internal.warc.gz"} |
Unit 7 � Quadratic Functions - DOC
Algebra II – Unit 5
Numbers and Functions
Why is this important to learn?
Numbers and Functions is expected to take appr... | {"url":"http://www.docstoc.com/docs/132351914/Unit-7-%EF%BF%BD-Quadratic-Functions---DOC","timestamp":"2014-04-16T06:06:30Z","content_type":null,"content_length":"59721","record_id":"<urn:uuid:e10253f2-7076-4217-ab75-446cc66c3e6a>","cc-path":"CC-MAIN-2014-15/segments/1397609521512.15/warc/CC-MAIN-20140416005201-00256-i... |
Vessels and Add-Ons
Whitby Tanks Limited
For information about Whitby Tanks Limited please Click Here
Information about Tanks, Vessels and Add-Ons
What is a Mild Steel Tank System?
A tank system consists of a primary container with an integral secondary containment.
The inner tank provides the required storage area, wh... | {"url":"http://www.whitbytanks.co.uk/info.php","timestamp":"2014-04-18T23:30:31Z","content_type":null,"content_length":"13240","record_id":"<urn:uuid:26dff8e6-0fe5-4557-a272-cb79c9da20e5>","cc-path":"CC-MAIN-2014-15/segments/1397609535535.6/warc/CC-MAIN-20140416005215-00335-ip-10-147-4-33.ec2.internal.warc.gz"} |
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Shoreline, WA Algebra Tutor
Find a Shoreline, WA Algebra Tutor
...I can address very specific questions, which are the kind I used to have. In my opinion, working with another is the best way to fully grasp the material taught in most advanced Math and
Engineering courses. If you or someone you know needs help, let... | {"url":"http://www.purplemath.com/shoreline_wa_algebra_tutors.php","timestamp":"2014-04-21T00:16:13Z","content_type":null,"content_length":"24160","record_id":"<urn:uuid:d79d9946-810e-4b79-9256-c0e3ddf46737>","cc-path":"CC-MAIN-2014-15/segments/1397609539337.22/warc/CC-MAIN-20140416005219-00045-ip-10-147-4-33.ec2.inter... |
Integer Division
20.2 Integer Division
This section describes functions for performing integer division. These functions are redundant when GNU CC is used, because in GNU C the ‘/’ operator always rounds towards zero. But in other C
implementations, ‘/’ may round differently with negative arguments. div and ldiv are us... | {"url":"http://www.gnu.org/savannah-checkouts/gnu/libc/manual/html_node/Integer-Division.html","timestamp":"2014-04-20T06:40:01Z","content_type":null,"content_length":"9248","record_id":"<urn:uuid:9d21ea57-993f-4f84-9948-71d8e8c95ff1>","cc-path":"CC-MAIN-2014-15/segments/1397609538022.19/warc/CC-MAIN-20140416005218-002... |