Analytic sets in the theory of commutative semigroups
Tom 228 / 2015
Studia Mathematica 228 (2015), 3-6
MSC: Primary 43A65; Secondary 03E15.
DOI: 10.4064/sm228-1-2
Streszczenie
A problem about representations of countable, commutative semigroups leads to an analytic non-Borel set.
