Browsing Matematisk institutt by Author "Kaliszewski, S."

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  • Coactions on C*-algebras and universal properties 
    Bedos, Eric Christophe; Kaliszewski, S.; Quigg, John; Turk, Jonathan (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2023)
    It is well-known that the maximalization of a coaction of a locally compact group on a C*-algebra enjoys a universal property. We show how this important property can be deduced from a categorical framework by exploiting ...
  • On Exel-Pardo algebras 
    Bedos, Erik Christopher; Kaliszewski, S.; Quigg, John (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2017)
    We generalize a recent construction of Exel and Pardo, from discrete groups acting on finite directed graphs to locally compact groups acting on topological graphs. To each cocycle for such an action, we construct a ...
  • Rigidity theory for C*-dynamical systems and the "Pedersen rigidity problem", II 
    Kaliszewski, S.; Omland, Tron; Quigg, John (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2019)
    This is a follow-up to a paper with the same title and by the same authors. In that paper, all groups were assumed to be abelian, and we are now aiming to generalize the results to nonabelian groups. The motivating point ...
  • Skew products of finitely aligned left cancellative small categories and Cuntz–Krieger algebras 
    Bedos, Erik Christopher; Kaliszewski, S.; Quigg, John (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2021)
    Given a group cocycle on a finitely aligned left cancellative small category (LCSC), we investigate the associated skew product category and its Cuntz–Krieger al- gebra, which we describe as the crossed product of the ...
  • Strong Pedersen rigidity for coactions of compact groups 
    Kaliszewski, S.; Omland, Tron; Quigg, Johnnie Currie; Turk, Jonathan (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2023)
    We prove a version of Pedersen’s outer conjugacy theorem for coactions of compact groups, which characterizes outer conjugate coactions of a compact group in terms of properties of the dual actions. In fact, we show that ...