Gemma Crowe - Twisted conjugacy in dihedral Artin groups I: Torus Knot groups

gcc:13561 - journal of Groups, complexity, cryptology, May 26, 2025, Volume 17, Issue 1 - https://doi.org/10.46298/jgcc.2025.17.1.13561
Twisted conjugacy in dihedral Artin groups I: Torus Knot groupsArticle

Authors: Gemma Crowe

    In this paper we provide an alternative solution to a result by Juhász that the twisted conjugacy problem for odd dihedral Artin groups is solvable, that is, groups with presentation $G(m) = \langle a,b \; | \; _{m}(a,b) = {}_{m}(b,a) \rangle$, where $m\geq 3$ is odd, and $_{m}(a,b)$ is the word $abab \dots$ of length $m$, is solvable. Our solution provides an implementable linear time algorithm, by considering an alternative group presentation to that of a torus knot group, and working with geodesic normal forms. An application of this result is that the conjugacy problem is solvable in extensions of odd dihedral Artin groups.


    Volume: Volume 17, Issue 1
    Published on: May 26, 2025
    Accepted on: May 23, 2025
    Submitted on: May 8, 2024
    Keywords: Mathematics - Group Theory,Computer Science - Computational Complexity,20F10, 20F36

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