James Howie

  1. Can Dehn surgery yield three connected summands?.

    Authors: James Howie
    Subjects: Geometric Topology
    Abstract

    A consequence of the Cabling Conjecture of Gonzalez-Acu\~{n}a and Short is
    that Dehn surgery on a knot in $S^3$ cannot produce a manifold with more than
    two connected summands. In the event that some Dehn surgery produces a manifold
    with three or more connected summands, then the surgery parameter is bounded in
    terms of the bridge number by a result of Sayari. Here this bound is sharpened,
    providing further evidence in favour of the Cabling Conjecture.

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