135 citations · 163 across the 12 of their papers we have counts for
12 papers
Negative definite functions for C*-dynamical systems
Erik Bedos, Roberto Conti
Given an action of a discrete group on a unital C*-algebra , we introduce a natural concept of -negative definiteness for functions from to , and examine some…
On twisted group C-algebras associated with FC-hypercentral groups and other related groups
Erik Bedos, Tron Omland
We show that the twisted group C-algebra associated with a discrete FC-hypercentral group is simple (resp. has a unique tracial state) if and only if Kleppner's condition is sa…
On maximal ideals in certain reduced twisted C*-crossed products
Erik Bédos, Roberto Conti
We consider a twisted action of a discrete group G on a unital C*-algebra A and give conditions ensuring that there is a bijective correspondence between the maximal invariant idea…
Fourier series and twisted C*-crossed products
Erik Bedos, Roberto Conti
This paper is an invitation to Fourier analysis in the context of reduced twisted C*-crossed products associated with discrete unital twisted C*-dynamical systems. We discuss norm-…
On discrete twisted C*-dynamical systems, Hilbert C*-modules and regularity
Erik Bedos, Roberto Conti
We first give an overview of the basic theory for discrete unital twisted C*-dynamical systems and their covariant representations on Hilbert C*-modules. After introducing the noti…
The full group C*-algebra of the modular group is primitive
Erik Bedos, Tron Omland
We show that the full group C-algebra of is primitive when , and not primitive when . Moreover, we show that there exists an uncountable family of pa…