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Word problems requiring exponential time: Preliminary report. (English) Zbl 0359.68050

Proc. 5th ann. ACM Symp. Theor. Comput., Austin 1973, 1-9 (1973).

MSC:

68Q25 Analysis of algorithms and problem complexity
68Q45 Formal languages and automata
03D40 Word problems, etc. in computability and recursion theory
03D10 Turing machines and related notions