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math.OA2026
Lattices of strongly reflexive masa-bimodules
Rupert H. Levene, Ying-Fen Lin, Ivan G. Todorov
We characterise the density of the positive rank one subspace of a masa-bimodule in terms of its support. We prove that strongly reflexive masa-bimodules form a Boolean lattice und…
math.OA2023
The local bisection hypothesis for twisted groupoid C*-algebras
Becky Armstrong, Jonathan H. Brown, Lisa Orloff Clark +4
In this note, we present criteria that are equivalent to a locally compact Hausdorff groupoid being effective. One of these conditions is that satisfies the "C*-algebraic l…
math.OA2018
Operator system structures and extensions of Schur multipliers
Ying-Fen Lin, Ivan G. Todorov
For a given C*-algebra , we establish the existence of maximal and minimal operator -system structures on an AOU -space. In the case $\mathca…