# Spectral Analysis and Its Applications: Ion Colojoară Anniversary Volume

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*Aurelian Gheondea; Mihai Şabac*

A publication of the Theta Foundation

This book is dedicated to Ion Colojoara, one of the main contributors to the
development of spectral theory in Banach spaces. It contains survey papers and
a careful selection of research papers by Colojoara's colleagues, former
students, and prominent researchers in the field.

Topics include:

- growth properties of resolvents
- positive definite operator measures and operator-valued functions
- spectral spaces of bounded operators
- realization techniques for analytic functions of several variables
- perturbation theory and spectral resolutions in Krein spaces
- orthogonal polynomials in several non-commuting variables
- idempotent linear relations and generalized projection on Hilbert spaces

The book is suitable for graduate students and researchers interested in operator theory.

A publication of the Theta Foundation. Distributed worldwide, except in Romania, by the AMS.

#### Readership

Graduate students and research mathematicians interested in operator theory.