Commutative cancellative semigroups without idempotents
Commutative cancellative semigroups without idempotents
A commutative cancellative idempotent-free semigroup (CCIF-) S can be described in terms of a commutative cancellative semigroup C with identity, an ideal of C, and a function of C X C into integers.If C is an abelian group, S has an archimedean component as an ideal; S is called an …