Elementary homomorphisms and a solution of the DOL sequence equivalence problem. (English) Zbl 0407.68085


68Q45 Formal languages and automata
03B25 Decidability of theories and sets of sentences
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[1] Culik, K.; Fris, I., The decidability of the equivalence problem for D0L systems, Information and Control, 35, 20-39 (1977) · Zbl 0365.68074
[2] Ehrenfeucht, A.; Lee, K. P.; Rozenberg, G., Subword complexities of various classes of deterministic developmental languages without interactions, Theoret. Comput. Sci., 1, 59-76 (1974) · Zbl 0316.68043
[3] Ehrenfeucht, A.; Rozenberg, G., Simplifications of homomorphisms, Information and Control (1977) · Zbl 0414.68046
[4] Rozenberg, G.; Salomaa, A., The mathematical theory of L systems, (Tou, J., Advances in Information Systems Science, Vol. 6 (1974), Plenum Press: Plenum Press New York), 161-206 · Zbl 0365.68072
[5] Salomaa, A.; Soittola, M., Automata-Theoretic Aspects of Formal Power Series (1977), Springer Verlag: Springer Verlag Berlin
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