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134 papers · 1 filter
Paper-folding models for the CAR algebra
Grigoris Kopsacheilis, Wilhelm Winter
We show that the CAR algebra admits a Cantor spectrum C*-diagonal that is not conjugate to the standard AF diagonal. We obtain this by classification theory of C*-algebras, and the…
Deformation of Fell bundles
Alcides Buss, Siegfried Echterhoff
In this paper we study deformations of -algebras that are given as cross-sectional -algebras of Fell bundles over locally compact groups . Our deformation comes from a…
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…
Simplicity of crossed products by FC-hypercentral groups
Shirly Geffen, Dan Ursu
In this paper, we give a complete, two-way characterization, of when a noncommutative crossed product is simple, in the case of being an FC-hypercentral group. T…
Schur Multipliers of -algebras, group-invariant compactification and applications to amenability and percolation
Chiranjib Mukherjee, Konstantin Recke
Let be a countable discrete group. Given any sequence of -normalized functions (), consider the associated positive definite matrix coeffi…
A note on commutation relations and finite dimensional approximations
Fernando Lledó, Diego Martínez
In this article we show that the main C*-algebras describing the canonical commutation relations of quantum physics, i.e., the Weyl and resolvent algebras, are in the class of Føln…