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Binary (generalized) Post Correspondence Problem. (English) Zbl 1023.03038

We give a new proof for the decidability of the binary Post Correspondence Problem (PCP) originally proved in 1982 by A. Ehrenfeucht, J. Karhumäki and G. Rozenberg [Theor. Comput. Sci. 21, 119-144 (1982; Zbl 0493.68076)]. Our proof is complete and somewhat shorter than the original proof although we use the same basic idea.

MSC:

03D40 Word problems, etc. in computability and recursion theory
03B25 Decidability of theories and sets of sentences
68Q45 Formal languages and automata

Citations:

Zbl 0493.68076
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References:

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