Timeline for Salié permutations and fair permutations
Current License: CC BY-SA 3.0
5 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Nov 25 at 3:30 | comment | added | Ira Gessel | Is there a combinatorial proof that the number of fair permutations of $\{1,2,\dots,n\}$, with exponential generating function $e^x\sec x$, is divisible by $2^{\lfloor n/2\rfloor}$? | |
| Nov 28, 2012 at 2:37 | history | edited | Richard Stanley | CC BY-SA 3.0 |
addendum added
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| Nov 21, 2012 at 5:25 | vote | accept | Timothy Chow | ||
| Nov 21, 2012 at 2:05 | history | edited | Richard Stanley | CC BY-SA 3.0 |
typo corrected
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| Nov 21, 2012 at 1:29 | history | answered | Richard Stanley | CC BY-SA 3.0 |