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The Unit Group of Small Group Algebras and the Minimum Counterexample to the Isomorphism Problem

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    Abstract

    Let KG denote the group algebra of the group G over the field K
    and let U(KG) denote its group of units. Here without the use of a computer we
    give presentations for the unit groups of all group algebras KG, where the size of
    KG is less than 1024. As a consequence we find the minimum counterexample
    to the Isomorphism Problem for group algebras.
    Original languageEnglish (Ireland)
    Pages (from-to)531-537
    JournalInternational Journal of Pure and Applied Mathematics
    Volume49
    Issue number4
    Publication statusPublished - 2008

    Keywords

    • group ring
    • group algebra
    • unit group
    • isomorphism problem

    Name of Affiliated ATU Research Unit

    • MISHE - Mathematical Modelling and Intelligent Systems for Health & Environment

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