Timeline for When is a monic integer polynomial the characteristic polynomial of a non-negative integer matrix?
Current License: CC BY-SA 2.5
17 events
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Jul 12, 2016 at 12:29 | comment | added | PrimeRibeyeDeal | Ah, ok. Thanks! The Möbius function must certainly rank among the functions with the highest usefulness to number-of-possible-output-values ratio. | |
Jul 11, 2016 at 18:18 | comment | added | Qiaochu Yuan | @Prime: a nonnegative integer matrix is the adjacency matrix of some graph (directed, multi). The Mobius-inverted quantities above count the number of aperiodic walks on this graph of length $n$. | |
Jul 11, 2016 at 16:12 | comment | added | PrimeRibeyeDeal | What made you suspect that the Moebius conversion would be relevant? | |
Apr 3, 2011 at 23:35 | history | edited | Qiaochu Yuan | CC BY-SA 2.5 |
deleted 136 characters in body
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Apr 3, 2011 at 23:32 | vote | accept | Qiaochu Yuan | ||
Apr 3, 2011 at 23:00 | answer | added | Douglas Lind | timeline score: 33 | |
Nov 25, 2009 at 21:11 | history | edited | Philipp Lampe |
edited tags
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Nov 5, 2009 at 13:20 | answer | added | Gray Taylor | timeline score: 3 | |
Nov 4, 2009 at 1:40 | answer | added | Qiaochu Yuan | timeline score: 1 | |
Nov 4, 2009 at 0:45 | answer | added | Ian Agol | timeline score: 1 | |
Nov 3, 2009 at 21:18 | answer | added | moonface | timeline score: 4 | |
Nov 3, 2009 at 17:59 | history | edited | Qiaochu Yuan | CC BY-SA 2.5 |
Changed wording.
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Nov 3, 2009 at 17:53 | answer | added | Gray Taylor | timeline score: 0 | |
Nov 3, 2009 at 15:40 | history | edited | Qiaochu Yuan | CC BY-SA 2.5 |
Fixed wording.
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Nov 3, 2009 at 15:06 | answer | added | Ben Webster♦ | timeline score: -1 | |
Nov 3, 2009 at 15:02 | history | edited | Qiaochu Yuan | CC BY-SA 2.5 |
Added a condition.
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Nov 3, 2009 at 14:47 | history | asked | Qiaochu Yuan | CC BY-SA 2.5 |