most recent 30 from http://mathoverflow.net 2013-05-19T13:17:57Z http://mathoverflow.net/feeds/user/5945 http://www.creativecommons.org/licenses/by-nc/2.5/rdf http://mathoverflow.net/questions/30096/graviton-like-cellular-automaton Paul Reiners 2010-06-30T19:03:05Z 2010-07-02T16:22:54Z

<p>Gravitons are presumed to change the shape of space-time, and if there are enough of them, perhaps even its topology. Does anyone know of any cellular automata that, say, change the neighborhood based on the density or topology of clumps of "on" cells, or similar?</p> <p>[This question was first asked on the math-fun mailing list.]</p>

http://mathoverflow.net/questions/23869/chance-of-something-being-fixed Paul Reiners 2010-05-07T15:30:22Z 2010-05-07T18:40:03Z

<p>I'm fixing a software defect that occurs 1 in <em>n</em> test runs. If I want to know that the probability of it being fixed is <em>>= p</em> for some <em>0 &lt;= p &lt; 1</em>, how many times, <em>m</em>, do I need to run the test successfully (without the defect occurring)?</p>

http://mathoverflow.net/questions/23869/chance-of-something-being-fixed/23872#23872 Paul Reiners 2010-05-07T16:30:04Z 2010-05-07T16:30:04Z

Yes, that's a reasonable assumption.

http://mathoverflow.net/questions/23869/chance-of-something-being-fixed/23871#23871 Paul Reiners 2010-05-07T16:07:32Z 2010-05-07T16:07:32Z

Well, it's not homework. I wish it were. It's a bug that only QA seems to be able to reproduce. And, yes, I probably should have just looked it up, since it's a rather simple question.