This article is cited in 2 papers

Two remarks on commutative semigroups isomorphism

M. A. Taĭclin


Abstract: The isomorphism problem is solved for the commutative semigroups with 5 generators. Each finitely generated commutative semigroup $A$ is related to a finite projective class of commutative semigroups. Any finite generated commutative semigroup is isomorphic to semigroup $A$ if and only if it belongs to this finite projective class.

Received: 05.01.1967

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