Math

Dissection puzzle
This is probably a well-known puzzle. Given a square ABCD, centre O, with the triangle ABO removed, is it possible to dissect the remainder AOBCD into four congruent pieces? -- Richard -- Please remember to mention me / in tapes you leave behind. ... 8 Mar 2010 06:24

I glanced at a math book
I think the cover was white. Or perhaps yellow. Or beige. ... 6 Mar 2010 15:11

The discriminant of a family of polynomials
Hi all, i found a family of polynomials which can be characterized by the following discriminant: D(n,m)=2^(2*(4*m + m^2) + m^2*(1 - Mod[n, 2]))*(-1 + 2^m)^(-1 + m*(1 + Mod[n, 2]))*m^(4*m) Is there some way to find the polynomials P(n,m,x)? Gerry ... 10 Mar 2010 01:59

summary of some proofs of this book #490 Correcting Math
This book started, of course with correcting Euclid's Infinitude of Primes Proof. A correction that the mathematics community has been blind in seeing ever since Euclid penned his proof some 2 thousand years ago. The error of not knowing the difference between direct and indirect proof. And it shows that too many... 5 Mar 2010 15:05

minimum height of a 0-1 simplex
What is the minimum height of a full dimensional n-simplex whose vertices are members {0, 1}**n ? Equivalently, what is the minimum non-zero distance to the origin from a hyperplane defined by members of {0, 1}**n ? The answer is at most 1/sqrt(n) . The corner simplex provides an example. A smaller answer m... 5 Mar 2010 11:41

aren't getting enough JSH?
LOL Good one! ... 5 Mar 2010 07:14

Top 10 living mathematicians (or recently living)
An iniquitous question, perhaps, but certainly there are mathematicians still living who are, for one reason or another, more widely known. It exposes my background, perhaps, but I would include Perelman, Wiles, Graham and Conway. Who would you nominate for your current (or near current) top 10? Impossible, of... 10 Mar 2010 18:42

EHREN FESTPA RADO XAN DOT HER I DIOCI ES
Pentcho Valev wrote: For a century human rationality has been procrusteanized into conformity with Einstein's idea that, for a non-rotating observer, the periphery of a rotating disk is LONGER than the periphery of a non- rotating disk: http://www.bartleby.com/173/23.html Albert Einstein (1879�195... 4 Mar 2010 20:18

PRIME NUMBER DIVISOR FOUND BY INVERSE 19, THIS MINUTE-- P/11.11111111111(11) / 9 AND USE OF OUR PRECISE DECIMAL (11) CALCULATIONS . RIEMANN IS DOWN NEXT!!
0.05263157894737 mathematics <hope9...(a)verizon.net> wrote:   PRIME NUMBER DIVISOR FOUND Let me see... By definition, the only divisors that prime numbers have are themselves and 1. Which of the two have you managed to find after years of research? Have you finally discover 1, you rascal you? ... 4 Mar 2010 06:42

Be ready to be killed, or take action to stop the global suicide.Scandal at CERN.
John Fields wrote: On Wed, 03 Mar 2010 21:20:38 +0100, Sjouke Burry <burrynulnulfour(a)ppllaanneett.nnll> wrote: Magnetic wrote: On Feb 22, 11:13 pm, John Fields <jfie...(a)austininstruments.com> wrote: On Sun, 21 Feb 2010 23:26:28 -0800 (PST), Magnetic Now,now, where are... 5 Mar 2010 00:44