77 citations · 253 across the 28 of their papers we have counts for
32 papers
Infinite dimensional analogues of Choi matrices
Kyung Hoon Han, Seung-Hyeok Kye, Erling Størmer
For a class of linear maps on a von Neumann factor, we associate two objects, bounded operators and trace class operators, both of which play the roles of Choi matrices. Each of th…
Convex cones in mapping spaces between matrix algebras
Mark Girard, Seung-Hyeok Kye, Erling Størmer
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 complete…
Ola Bratteli and his diagrams
Tone Bratteli, Trond Digernes, George Elliott +6
This article discusses the life and work of Professor Ola Bratteli (1946--2015). Family, fellow students, his advisor, colleagues and coworkers review aspects of his life and his o…
Extension of positive maps
Erling Størmer
We prove two extension theorems for positive maps from operator systems into matrix algebras
Divisibility and Information Flow Notions of Quantum Markovianity for Noninvertible Dynamical Maps
Dariusz Chruściński, Ángel Rivas, Erling Størmer
We analyze the relation between CP-divisibility and the lack of information backflow for an arbitrary -- not necessarily invertible -- dynamical map. It is well known that CP-divis…
Uffe Haagerup - His life and mathematics
Mohammad Sal Moslehian, Erling Størmer, Steen Thorbjørnsen +1
In remembrance of Professor Uffe Valentin Haagerup (1949--2015), as a brilliant mathematician, we review some aspects of his life, and his outstanding mathematical accomplishments.