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Analytic sets in the theory of commutative semigroups

Volume 228 / 2015

Robert Kaufman Studia Mathematica 228 (2015), 3-6 MSC: Primary 43A65; Secondary 03E15. DOI: 10.4064/sm228-1-2

Abstract

A problem about representations of countable, commutative semigroups leads to an analytic non-Borel set.

Authors

  • Robert KaufmanDepartment of Mathematics
    University of Illinois at Urbana-Champaign
    1409 W. Green St.
    Urbana, IL 61801, U.S.A.
    e-mail

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