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Essentially nonfinitely based finite semigroups. (Russian) Zbl 0634.20027

As the main result it is proved that the set of essentially nonfinitely based finite semigroup is recursive.
Reviewer: I.Peák

MSC:

20M05 Free semigroups, generators and relations, word problems
20M07 Varieties and pseudovarieties of semigroups
03D50 Recursive equivalence types of sets and structures, isols
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