File(s) not publicly available
Algorithmic problems for finite groups and finite 0-simple semigroups
journal contribution
posted on 2023-05-16, 10:48 authored by Hall, TE, Kublanovskii, SI, Margolis, SW, Sapir, MV, Trotter, PGIt is shown that the embeddability of a finite 4-nilpotent semigroup into a 0-simple finite semigroup with maximal groups from a pseudovariety Mathematical script capital V is decidable if and only if the universal theory of the class Mathematical script capital V is decidable. We show that it is impossible to replace 4 by 3 in this statement. We also show that if the membership in Mathematical script capital V is decidable then the membership in the pseudovariety generated by the class of all finite 0-simple semigroups with subgroups from Mathematical script capital V is decidable while the membership in the quasi-variety generated by this class of 0-simple semigroups may be undecidable. © 1997 Published by Elsevier Science B.V.
History
Publication title
Journal of Pure and Applied AlgebraVolume
119Pagination
75-96ISSN
0022-4049Department/School
School of Natural SciencesPublisher
Elsevier Science BvPlace of publication
Po Box 211, Amsterdam, Netherlands, 1000 AeRepository Status
- Restricted