If I take a subsemilattice $S'$ of the Clifford semigroup $S$, such that the groups of $S'$ are abelian by finite of finite index in the respective groups of $S$ and I want to prove that $S$ is permutable. Does there exists an isomorphism from $S$ to $S'$?
2026-03-27 15:05:02.1774623902
Isomorphism in Clifford semigroups
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