Geodesic
Analytic sets in the theory of commutative semigroups
Robert Kaufman1
1 Department of Mathematics University of Illinois at Urbana-Champaign 1409 W. Green St. Urbana, IL 61801, U.S.A.
Studia Mathematica, Tome 228 (2015) no. 1, pp. 3-6

Voir la notice de l'article provenant de la source Institute of Mathematics Polish Academy of Sciences

A problem about representations of countable, commutative semigroups leads to an analytic non-Borel set.
DOI : 10.4064/sm228-1-2
Keywords: problem about representations countable commutative semigroups leads analytic non borel set

Robert Kaufman 1

1 Department of Mathematics University of Illinois at Urbana-Champaign 1409 W. Green St. Urbana, IL 61801, U.S.A. 
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Robert Kaufman. Analytic sets in the theory of commutative semigroups. Studia Mathematica, Tome 228 (2015) no. 1, pp. 3-6. doi: 10.4064/sm228-1-2

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