Hyper-reflexivity of free semigroupoid algebras
Frédéric Jaëck, Stephen C. Power
Abstract
As a generalization of the free semigroup algebras considered by Davidson and Pitts, and others, the second author and D.W. Kribs initiated a study of reflexive algebras associated with directed graphs. A free semigroupoid algebra LG is generated by a family of partial isometries, and initial projections, acting on a generalized Fock space spawned from the directed graph G. We show that if the graph is finite then the algebra LG is hyper-reflexive.
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