Abstract
A random access machine model that has parallel processing and string manipulation is introduced. It is shown that NP is equal to the class of sets accepted by this model in nondeterministic time 0(log n), and this result is generalized to arbitrary time classes. A well-behaved subclass of the class of parallel, nondeter-ministic programs is analyzed.
Part of this research was done while at the Mathematisch Centrum, Amsterdam. This research was supported, in part, by NSF Grant MCS-74-02338.
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© 1978 Springer-Verlag Berlin Heidelberg
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Savitch, W.J. (1978). Parallel and nondeterministic time complexity classes. In: Ausiello, G., Böhm, C. (eds) Automata, Languages and Programming. ICALP 1978. Lecture Notes in Computer Science, vol 62. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-08860-1_31
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DOI: https://doi.org/10.1007/3-540-08860-1_31
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