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Finite automata over a direct product of free semigroups and groups and languages

✍ Scribed by P. V. Gorshkov; A. B. Stavrovskii


Publisher
Springer US
Year
1991
Tongue
English
Weight
496 KB
Volume
26
Category
Article
ISSN
1573-8337

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πŸ“œ SIMILAR VOLUMES


PSPACE-complete problems for subgroups o
✍ J.-C. Birget; S. Margolis; J. Meakin; P. Weil πŸ“‚ Article πŸ“… 2000 πŸ› Elsevier Science 🌐 English βš– 384 KB

We investigate the complexity of algorithmic problems on ΓΏnitely generated subgroups of free groups. Margolis and Meakin showed how a ΓΏnite monoid Synt(H ) can be canonically and e ectively associated with such a subgroup H . We show that H is pure (that is, closed under radical) if and only if Synt