Showing papers by "J. S. Lange published in 1984"
03 Sep 1984
TL;DR: A set in DSPACE(log n), NP-complete with respect to these reductions, is exhibited, which makes the transitive closure of the NLOG(·)-operation quite unlikely, unless NSPACE (log n) = NP is assumed.
Abstract: Nondetermistic logspace-bounded reductions are introduced. A set in DSPACE(log n), NP-complete with respect to these reductions, is exhibited, which makes the transitive closure of the NLOG(·)-operation quite unlikely, unless NSPACE(log n) = NP is assumed. In contrast to this the NLOG-closure of NLOG(NLOG(·))-classes is shown.
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