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Apr 13, 2017 at 12:58 history edited CommunityBot
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Dec 29, 2014 at 2:39 comment added Włodzimierz Holsztyński In an analogy with similar counting problems I'd suggest also the following variant: let the set of objects $\ Q\ $ be fixed, and introduce fixed parameter $\ q:=|Q|.\ $ Let $\ M\ $ be the (intended) upper bound number on the number of morphisms. What is the number $\ m:=m(q\ M)\ $ of all categories $\ C\ $ such that $\ Obj(C) = Q\ $ and $\ |Mor(C)|\le M\ $ $
Dec 27, 2014 at 10:47 answer added Tim Campion timeline score: 6
Mar 9, 2014 at 21:36 comment added Benjamin Steinberg Given how hard it is to count monoids and to count posets this must be extremely hard.
Mar 9, 2014 at 21:07 history edited Espen Nielsen CC BY-SA 3.0
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Mar 9, 2014 at 20:59 review Close votes
Mar 10, 2014 at 2:24
Mar 9, 2014 at 20:29 review First posts
Mar 9, 2014 at 20:42
Mar 9, 2014 at 20:10 history asked Espen Nielsen CC BY-SA 3.0