ACTA issues

Congruence preserving extension of finite commutative semigroups

Pierre Antoine Grillet

Acta Sci. Math. (Szeged) 70:3-4(2004), 545-550

Abstract. No finite commutative semigroup has a congruence preserving extension.

AMS Subject Classification (1991): 20M14

Keyword(s): congruence preserving extension, finite commutative semigroup

Received April 2, 2004, and in revised form June 27, 2004. (Registered under 5831/2009.)