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Oct 29 at 2:50 comment added Salvo Tringali What about a reference for the existence of two infinite non-isomorphic semigroups whose finitary power semigroups are isomorphic? I was not aware of this result.
Nov 5, 2012 at 23:35 comment added Michał Masny Where could I read about the isomorphism problem for finite semigroups?
Nov 3, 2012 at 23:12 vote accept Michał Masny
Nov 2, 2012 at 13:17 comment added Benjamin Steinberg Nice answer Victor.
Nov 2, 2012 at 2:48 history answered Victor CC BY-SA 3.0