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math.OA2000
Exact Groups, Induced Ideals, and Fell Bundles
Ruy Exel
Given a C*-algebra B which is graded over a discrete group G we consider ideals of B which are invariant under the projections onto each of the grading subspaces. If G is exact and…
math.OA2000
A New Look at The Crossed-Product of a C*-algebra by an Endomorphism
Ruy Exel
We give a new definition for the crossed-product of a C*-algebra A by a *-endomorphism α, which depends not only on the pair (A,α) but also on the choice of a transfer operator (de…
math.OA2000
Partial Dynamical Systems and the KMS Condition
Ruy Exel, Marcelo Laca
Given a countably infinite 0-1 matrix A without identically zero rows, let O_A be the Cuntz-Krieger algebra recently introduced by the authors and T_A be the Toeplitz extension of…