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A hierarchy for nondeterministic time complexity. (English) Zbl 0278.68042

MSC:
68Q25 Analysis of algorithms and problem complexity
03D10 Turing machines and related notions
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[1] Cook, S.A., The complexity of theorem-proving procedures, (), 151-158 · Zbl 0363.68125
[2] Karp, R.M., Reducibility among combinatorial problems, (), 85-103 · Zbl 0366.68041
[3] Hennie, F.C.; Stearns, R.E., Two-tape simulation of multi-tape Turing machines, J. assoc. for computing machinery, 13, 533-546, (1966) · Zbl 0148.24801
[4] Ibarra, Oscar, A note concerning nondeterministic tape complexities, J. assoc. for computing machinery, 19, 608-612, (1972) · Zbl 0245.94044
[5] Savitch, Walter, Relationships between nondeterministic and deterministic tape complexities, J. computer and system sciences, 4, 177-192, (1970) · Zbl 0188.33502
[6] \scS. Ruby and P. C. Fischer, Translational methods in computational complexity, 1965 IEEE Conference Record on Switching Circuit Theory, and Logical Design, Sixth Annual Symposium, pp. 173-178. · Zbl 0257.68037
[7] \scA. R. Meyer, A. L. Rosenberg, and P. C. Fischer, Multi-tape simulation of multi-head Turing machines, IEEE Conference Record of 1967 Eighth Annual Symposium on Switching and Automata Theory, 117-127.
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