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GIORGIA BELLOMONTE

Topological aspects of quasi *-algebras with sufficiently many *-representations

Abstract

Quasi *-algebras possessing a sufficient family M of invariant positive sesquilinear forms carry several topologies related to M which make every *-representation continuous. This leads to define the class of locally convex quasi GA*-algebras whose main feature consists in the fact that the family of their bounded elements, with respect to the family M, is a dense C*-algebra.