Browsing Øvrige samlinger by Author "Størmer, Erling"

Now showing items 1-3 of 3

  • Convex cones in mapping spaces between matrix algebras 
    Girard, Mark; Kye, Seung-Hyeok; Størmer, Erling (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2021)
    We introduce the notion of one-sided mapping cones of positive linear maps between matrix algebras. These are convex cones of maps that are invariant under compositions by completely positive maps from either the left or ...
  • Divisibility and Information Flow Notions of Quantum Markovianity for Noninvertible Dynamical Maps 
    Chruscinski, Dariusz; Rivas, Angel; Størmer, Erling (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)
    We analyze the relation between completely positive (CP) divisibility and the lack of information backflow for an arbitrary—not necessarily invertible—dynamical map. It is well known that CP divisibility always implies a ...
  • Extension of positive maps 
    Størmer, Erling (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2020)
    We prove an extension theorem for positive maps from operator systems into matrix algebras.