Locally convex quasi *-algebras and their representations

Bibliographic Information

Locally convex quasi *-algebras and their representations

Maria Fragoulopoulou, Camillo Trapani

(Lecture notes in mathematics, 2257)

Springer, c2020

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Includes bibliographical references and index

Description and Table of Contents

Description

This book offers a review of the theory of locally convex quasi *-algebras, authored by two of its contributors over the last 25 years. Quasi *-algebras are partial algebraic structures that are motivated by certain applications in Mathematical Physics. They arise in a natural way by completing a *-algebra under a locally convex *-algebra topology, with respect to which the multiplication is separately continuous. Among other things, the book presents an unbounded representation theory of quasi *-algebras, together with an analysis of normed quasi *-algebras, their spectral theory and a study of the structure of locally convex quasi *-algebras. Special attention is given to the case where the locally convex quasi *-algebra is obtained by completing a C*-algebra under a locally convex *-algebra topology, coarser than the C*-topology. Introducing the subject to graduate students and researchers wishing to build on their knowledge of the usual theory of Banach and/or locally convex algebras, this approach is supported by basic results and a wide variety of examples.

Table of Contents

- Introduction. - Algebraic Aspects. - Normed Quasi *-Algebras: Basic Theory and Examples. - Normed Quasi *-Algebras: Bounded Elements and Spectrum. - CQ*-Algebras. - Locally Convex Quasi *-Algebras. - Locally Convex Quasi C*-Algebras and Their Structure.

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