Finite Abundant Semigroups in Which the Idempotents Form a Subsemigroup*
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چکیده
We consider certain abundant semigroups in which the idempotents form a subsemigroup, and which we call bountiful semigroups. We find a simple criterion for a finite bountiful semigroup to be a member of the join of the pseudovarieties of finite groups and finite aperiodic semigroups.
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تاریخ انتشار 2005