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4 votes

Combinatorial Morse functions and random permutations

Please allow me to answer an amended question. It seems better to me to count discrete gradient flows instead of discrete Morse functions (of course this is a matter of opinion). In the case of the …
John Shareshian's user avatar
17 votes
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The Möbius number of the nonabelian finite simple groups

The answer to your question is ``yes". Something more general was proved by Hawkes, Isaacs and \"Ozaydin in a 1989 paper in the Rocky Mountain Journal of Mathematics. CORRECTION: As Sebastien Palcou …
John Shareshian's user avatar