×

About three equational classes of languages built up by shuffle operations. (English) Zbl 0413.68072

Math. Found. Comput. Sci., Proc. 5th MFCS Symp., Gdansk 1976, Lect. Notes Comput. Sci. 45, 337-344 (1976).

MSC:

68Q45 Formal languages and automata
68Q60 Specification and verification (program logics, model checking, etc.)
20M35 Semigroups in automata theory, linguistics, etc.
08A99 Algebraic structures