Sergey Norin

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Name Sergey Norin
Member for 2 years
Seen 14 hours ago
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Location Montreal, CA
Age

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Open problems with monetary rewards

jan 17 at 23:36 Harry Altman 980●1●10●16

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finding the parity of a permutation in little space

aug 14 11 at 18:47 Igor Rivin 31.1k●3●37●71

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What is the sandpile torsor?

jan 15 12 at 17:40 JSE 13.4k●33●83

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Disjoint stable sets in tournaments

sep 23 11 at 10:43 Felix Brandt 241●5

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Planar minor graphs

mar 28 12 at 11:24 Pierre Dehornoy 1,286●8●17

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Intersecting Family of Triangulations

nov 27 at 12:59 Gjergji Zaimi 37.5k●2●72●149

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How to keep subsets disjoint?

apr 12 11 at 6:10 Seva 4,983●1●8●26

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Probability to be the winner in a tournament

mar 19 12 at 4:38 Steven Landsburg 8,634●1●27●47

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A curious generalization of Helly’s theorem

oct 30 11 at 22:50 Gil Kalai 10.7k●6●80●144

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Asymptotic growth of antichains in divisibility posets

dec 24 11 at 9:22 Gjergji Zaimi 37.5k●2●72●149

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