most recent 30 from http://mathoverflow.net 2013-05-20T02:57:10Z http://mathoverflow.net/feeds/user/1564 http://www.creativecommons.org/licenses/by-nc/2.5/rdf http://mathoverflow.net/questions/7378/exact-short-sequences-of-vector-spaces puzzgek 2009-12-01T05:25:00Z 2009-12-03T23:27:05Z

<p>If possible, how could one prove that every short exact sequence 0->A-f->B-g->C->0 of vector spaces (here A,B and C) splits without using any basis of A,B or C. I was not able to exhibit a morphism h from B to A such that hof=Id without considering a basis.</p>

http://mathoverflow.net/questions/4724/how-does-random-noise-typically-look/4738#4738 puzzgek 2009-11-09T16:21:49Z 2009-11-09T16:21:49Z

<p>The type of noise that one could probably handle ('filter' or recover from) is such that for any given time t, any k bits are damaged with probability at most epsilon^k for some small positive epsilon.</p>

http://mathoverflow.net/questions/4435/process-on-22-points-in-0-1 puzzgek 2009-11-06T21:02:05Z 2009-11-06T21:02:05Z

That is for you to find out. Can you generalize it for n points and an interesting bound b(n).