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On the power of several queues

  • Automata And Formal Languages
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Book cover STACS 91 (STACS 1991)

Part of the book series: Lecture Notes in Computer Science ((LNCS,volume 480))

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Abstract

We present almost matching upper and lower time bounds for the simulation of Turing machines with many queues (resp. tapes, stacks) on Turing machines with few queues. In particular the power of two queues in comparison with other storage types is clarified, which resolves a question left open by [LLV86]. We show: Multistorage Turing machines can be simulated in time O(t(n)1+1/k) on k-queue machines. Every online simulation of k+1 queues (or of two tapes) on k queues requires time Ω(t(n)1+1/k/polylogt(n)). The lower bounds are based on Kolmogorov complexity.

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Authors and Affiliations

  1. Informatik, Universität Dortmund, BRD

    Martin Schmidt

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  1. Martin Schmidt
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Correspondence to Martin Schmidt .

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Christian Choffrut Matthias Jantzen

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© 1991 Springer-Verlag Berlin Heidelberg

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Schmidt, M. (1991). On the power of several queues. In: Choffrut, C., Jantzen, M. (eds) STACS 91. STACS 1991. Lecture Notes in Computer Science, vol 480. Springer, Berlin, Heidelberg. https://doi.org/10.1007/BFb0020788

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  • DOI: https://doi.org/10.1007/BFb0020788

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  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-540-53709-0

  • Online ISBN: 978-3-540-47002-1

  • eBook Packages: Springer Book Archive

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