×

A property of finitely generated submonoids of free monoids. (English) Zbl 0413.20042

Algebraic theory of semigroups, Proc. Conf. Szeged 1976, Colloq. Math. Soc. Janos Bolyai, 20, 545-576 (1979).

MSC:

20M05 Free semigroups, generators and relations, word problems
20M35 Semigroups in automata theory, linguistics, etc.