Abstract
Polynomial time machines having restricted access to an NP oracle are investigated. Restricted access means that the number of queries to the oracle is restricted and/or the way in which the queries are made is restricted. Very different kinds of such restrictions result in the same or comparable complexity classes. In particular, the class PNP[O(log n)] can be characterized in very different ways.
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Wagner, K.W. (1988). On restricting the access to an NP-oracle. In: Lepistö, T., Salomaa, A. (eds) Automata, Languages and Programming. ICALP 1988. Lecture Notes in Computer Science, vol 317. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-19488-6_150
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DOI: https://doi.org/10.1007/3-540-19488-6_150
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