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Names Trump Malice: Tiny Mobile Agents Can Tolerate Byzantine Failures

Published: 03 July 2009 Publication History

Abstract

We introduce a new theoretical model of ad hoc mobile computing in which agents have restricted memory, highly unpredictable movement and no initial knowledge of the system. Each agent's memory can store <em>O</em> (1) bits, plus a unique identifier, and <em>O</em> (1) other agents' identifiers. Inputs are distributed across <em>n</em> agents, and all agents must converge to the correct output value. We give a universal construction that proves the model is surprisingly strong: It can solve any decision problem in <em>NSPACE</em> (<em>n</em> log<em>n</em> ). Moreover, the construction is robust with respect to Byzantine failures of a constant number of agents.

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  1. Names Trump Malice: Tiny Mobile Agents Can Tolerate Byzantine Failures

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    cover image Guide Proceedings
    ICALP '09: Proceedings of the 36th Internatilonal Collogquium on Automata, Languages and Programming: Part II
    July 2009
    594 pages
    ISBN:9783642029295
    • Co-chair:
    • Yossi Matias,
    • Editors:
    • Susanne Albers,
    • Alberto Marchetti-Spaccamela,
    • Sotiris Nikoletseas,
    • Wolfgang Thomas

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    Springer-Verlag

    Berlin, Heidelberg

    Publication History

    Published: 03 July 2009

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