Math

Algebra Question
Say P is a structure with an addition and multiplication satisfying (i) x+y = y+x (ii) x+(y+z) = (x+y)+z (iii) If x+z = y+z then x = y. (iv) (P, multiplication) is an abelian group (v) x(y+z) = xy+xz. I gather that although the definitions are not quite standard, this might be called a semi-ring plus can... 21 Jun 2010 15:49

A little more on e^(pi*sqrt(163))...
Hello all, Here's a little more on that intriguing number 163: 163 (12^3 + 640320^3) = 12^2 (545140134^2) The numbers on the LHS are familiar, and the RHS is a perfect square. But the big number on the RHS also appears in a special formula... See: http://sites.google.com/site/tpiezas/updates06 Yours, ... 15 Jun 2010 08:42

How Can ZFC/PA do much of Math - it Can't Even Prove PA is Consistent (EASY PROOF)
George Greene <greeneg(a)email.unc.edu> writes: PA doesn't know what an infinite set is. ZFC does. That is the main reason why ZFC can prove that PA is consistent (a model of PA *has* to be infinite, and PA can't prove that anything is infinite, since in its standard model, NOTHING IS). This doesn't ma... 8 Jul 2010 02:39

best way of testing Dirac's new radioactivities additive creation Chapt 14 #163; ATOM TOTALITY
Archimedes Plutonium wrote: Perhaps we need whole galaxies to make the measurement of Dirac new radioactivities. So what would Dirac have calculated for Andromeda moving towards Earth to have been, if it were additive creation? Would it have been something like 2 light years/year?? Sorry a... 15 Jun 2010 02:11

Why can no one in sci.math understand my simple point?
Consider the list of increasing lengths of finite prefixes of pi 3 31 314 3141 ..... Everyone agrees that: this list contains every digit of pi (1) as pi is an infinite digit sequence, this means this list contains every digit of an infinite digit sequence (2) similarly, as computable digit sequ... 12 Jul 2010 05:15

power of a matrix limit A^n
If I have a matrix A whose eigenvalues have all magnitude less than 1, then does A^n approach zero for large integer n? Hardy ... 15 Jun 2010 20:57

This Week's Finds in Mathematical Physics (Week 299)
Also available at http://math.ucr.edu/home/baez/week299.html June 12, 2010 This Week's Finds in Mathematical Physics (Week 299) John Baez Two weeks ago I went to Oxford to attend a school on Quantum Information and Computer Science, and then a workshop on Quantum Physics and Logic. So, I'll start by telling ... 18 Jun 2010 08:03

JSH: What About.....
Don't you think if your research had any value, given that you have posted it publically, that someone would have ripped it off and published it as their own.? Are you gonna come up with a new gigantic contrivance to explain that away.?. The weirder and more contrived your theory, the less likely ... 14 Jun 2010 22:56

ADVISORY TO CHRISTMAS KIDS AND OTHER MEMBERS WHO DON�T WANT TROUBLE
1) Google-poster 2) gmail address 3) ALL CAPS 4) Off-topic 5) Fuckwit. ... 14 Jun 2010 21:50

Einstein was right - The state of the ether is determined by its connections with the matter
On Jun 14, 6:57 pm, Arindam Banerjee <adda1...(a)bigpond.com> wrote: On Jun 15, 8:53 am, Arindam Banerjee <adda1...(a)bigpond.com> wrote: On Jun 14, 10:46 pm, mpc755 <mpc...(a)gmail.com> wrote: On Jun 14, 8:35 am, Arindam Banerjee <banerjeeadda1...(a)gmail.com> wrote: On Jun 14, 10... 15 Jun 2010 19:52