Commutative closure of context-free languages

Author:

Lisovik L. P.

Publisher

Springer Science and Business Media LLC

Subject

General Computer Science,General Computer Science

Reference5 articles.

1. S. Ginzburg, Mathematical Theory of Context-Free Languages [Russian translation], Mir, Moscow (1970).

2. L. P. Lisovik, ?On the preservation of the contextless property of languages under a permutation of letters in words,? in: Theory of Languages and Processors [in Russian], Inst. Kibernetiki Akad. Nauk UkrSSR, Kiev (1974).

3. O. Takeshi, ?On permuting letters of words in context-free languages,? Inf. Control,20, No. 5 (1972).

4. V. N. Red'ko and L. P. Lisovik, ?The identity problem for a quasiregular algebra over a commutative semigroup and commutative semigroup languages,? Kibernetika, No. 5 (1975).

5. V. N. Red'ko, ?Commutative closure of occurrences,? Dop. Akad. Nauk URSR, No. 9 (1963).

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