Partial isometries: a survey

Document Type: Article dedicated to Uffe Haagerup

Authors

1 Universidad de Granada

2 Departamento de Análisis Matemático, Facultad de Ciencias

Abstract

We survey the main results characterizing partial isometries in C$^*$-algebras and tripotents in JB$^*$-triples obtained in terms of regularity, conorm, quadratic-conorm, and the geometric structure of the underlying Banach spaces.

Keywords