Aperiodic Pointlikes and Beyond
نویسندگان
چکیده
We prove that if π is a recursive set of primes, then pointlike sets are decidable for the pseudovariety of semigroups whose subgroups are π-groups. In particular, when π is the empty set, we obtain Henckell’s decidability of aperiodic pointlikes. Our proof, restricted to the case of aperiodic semigroups, is simpler than the original proof.
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عنوان ژورنال:
- IJAC
دوره 20 شماره
صفحات -
تاریخ انتشار 2010