Monoid varieties and semigroup theory form a vibrant subfield of algebra that studies classes of algebraic structures defined by equational identities. Monoids, which are semigroups with an identity ...

This is a preview. Log in through your library . Abstract For any finite commutative multiplicative monoid S with an element 0 such that S0 = {0} ≠ S, some decompositions of S are given as the ...

Necessary and sufficient conditions on a monoid M are found in order that M be isomorphic to the syntactic monoid of a language L over an alphabet X having one of the ...