Browsing Department of Pure Mathematics and Mathematical Statistics (DPMMS) by Author "Bridson, MR"

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  • Undecidability and the developability of permutoids and rigid pseudogroups 

    Bridson, MR; Wilton, Henry John (Cambridge University PressForum of Mathematics, Sigma, 2017-03-20)
    A $\textit{permutoid}$ is a set of partial permutations that contains the identity and is such that partial compositions, when defined, have at most one extension in the set. In 2004 Peter Cameron conjectured that there ...