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On adaptive dlogtime and polylogtime reductions

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Part of the book series: Lecture Notes in Computer Science ((LNCS,volume 775))

Abstract

We investigate properties of the relativized NC and AC hierarchies in their DLOGTIME-, respectively, ALOGTIME-uniform setting and show that these hierarchies can be characterized in terms of adaptive reducibility in deterministic (poly)logarithmic time, i.e. in time O(log n)i for i≥0. Using this characterization, we substantially generalize various previous results concerning the structure of the NC and AC hierarchies.

Partially supported by DAAD and Spanish Government (Acción Integrada 131-B, 313-AI-e-es/zk).

Research supported by the ESPRIT Basic Research Actions Program of the EC under contract No. 7141 (project ALCOM II).

On leave until March 1995, visiting Dept. L.S.I. of Univ. Politècnica de Catalunya supported by a Habilitationsstipendium of Deutsche Forschungsgemeinschaft (DFG-Je 154 2/1).

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Patrice Enjalbert Ernst W. Mayr Klaus W. Wagner

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© 1994 Springer-Verlag Berlin Heidelberg

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àlvarez, C., Jenner, B. (1994). On adaptive dlogtime and polylogtime reductions. In: Enjalbert, P., Mayr, E.W., Wagner, K.W. (eds) STACS 94. STACS 1994. Lecture Notes in Computer Science, vol 775. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-57785-8_150

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  • DOI: https://doi.org/10.1007/3-540-57785-8_150

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  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-540-57785-0

  • Online ISBN: 978-3-540-48332-8

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