Math

What's the chance of going out and finding the butterfly which caused Hurricane Alex?
After all, we're told that the flapping of a butterfly's wings can create a hurricane down the line. ... 1 Jul 2010 00:12

Sum of Lyapunov exponents
Hello. Please help me. What does the sum of all Lyapunov exponents of a discrete dynamical system equal to? Great thanks in advance! ... 30 Jun 2010 14:15

Product of diagonal elements of a square matrix
Hello. I have a question on linear algebra. Is the product of diagonal elements of a square matrix the invariant? If it is true how to prove this? Thank you very much! ... 30 Jun 2010 19:49

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Digital Video Camera Canon GL2 MiniDV Digital Camcorder w/20x Optical Zoom http://astore.amazon.com/entertainmens-20/detail/B00006FXHQ GSI Outdoor World's Smallest/Lightest, High Definition Digital Camera, Ultra Video Camcorder, Voice Recorder, Webcam, 4gb Built in Memory, Install In-Dash on Windshield for C... 30 Jun 2010 14:15

WORLDS BEST AND ONLY EXACT PRIME SIEVE(-1tangent) HAS BEEN VERIFIED AGAINST ATKINS, NO COMPARISON , -1 TANGENT IS A CONTINUUM , ATKINS NOT
On Jun 30, 11:05 am, Inverse 19 mathematics <hope9...(a)verizon.net> wrote:  The -1 tangent Prime sieve has been run against the  Atkins sieve, and there is no comparison, As one great Mathematical professor asked us , " How do you prove your numbers are prime numbers as we do in our Mathematics"  That... 30 Jun 2010 13:08

WORLDS BEST AND ONLY EXACT PRIME SIEVE(-1tangent) HAS BEEN VERIFIED AGAINST ATKINS, NO COMPARISON , -1 TANGENT IS A CONTINUUM , ATKINS NOT
The -1 tangent Prime sieve has been run against the Atkins sieve, and there is no comparison, As one great Mathematical professor asked us , " How do you prove your numbers are prime numbers as we do in our Mathematics" Thats a dumb questions Professor-- Ours is a series placement , if the seies runs like, 6,... 30 Jun 2010 14:15

Analyzing Microarrays, EEG's, MRI's starts July 9th.
Analyzing Microarrays, EEG's, MRI's starts July 9th. This 4-week course will show you how to analyze data with large numbers of variables most effectively and introduce you to the software that can do the job. Emphasis on the use of the bootstrap, decision trees, multivariate regression, and permutation tests. J... 30 Jun 2010 12:00

History of derivative of arithmetic function
The derivative of an arithmetic function f:Z^+ -> C is defined as f'(n)=f(n)log n Does anyone know who first defined this definition? Dirichlet? I can't find this info from Google. ... 1 Jul 2010 09:58

advice from the master
James Harris wrote : Here's an example, solve for m, where: 2^m = 13 mod 23 so k = 2, and f_1*...*f_m = q^2 mod N = 13^2 mod 23 = 8 mod 23. And I found a solution with f_1*...*f_m = 54, and f_1 = 2, f_2 = 3, f_3 = 3, f_4 = 3 so c=4, and m = (k-1)^{-1}(f_1 +...+ f_c -... 30 Jun 2010 09:46

Wouldn�t It be Cool if These Were Equivalent?
On Tue, 29 Jun 2010 18:24:59 -0700 (PDT), Charlie-Boo <shymathguy(a)gmail.com> wrote: On Jun 29, 5:25�pm, MoeBlee <jazzm...(a)hotmail.com> wrote: On Jun 28, 7:04�pm, Charlie-Boo <shymath...(a)gmail.com> wrote: On Jun 28, 12:44�pm, MoeBlee <jazzm...(a)hotmail.com> wrote: On Jun 26,... 3 Jul 2010 17:54