1st Edition

Composition Operators on Spaces of Analytic Functions

    The study of composition operators lies at the interface of analytic function theory and operator theory. Composition Operators on Spaces of Analytic Functions synthesizes the achievements of the past 25 years and brings into focus the broad outlines of the developing theory. It provides a comprehensive introduction to the linear operators of composition with a fixed function acting on a space of analytic functions. This new book both highlights the unifying ideas behind the major theorems and contrasts the differences between results for related spaces.
    Nine chapters introduce the main analytic techniques needed, Carleson measure and other integral estimates, linear fractional models, and kernel function techniques, and demonstrate their application to problems of boundedness, compactness, spectra, normality, and so on, of composition operators. Intended as a graduate-level textbook, the prerequisites are minimal. Numerous exercises illustrate and extend the theory. For students and non-students alike, the exercises are an integral part of the book.
    By including the theory for both one and several variables, historical notes, and a comprehensive bibliography, the book leaves the reader well grounded for future research on composition operators and related areas in operator or function theory.

    Introduction
    Analysis Background
    A Menagerie of Spaces
    Some Theorems on Integration
    Geometric Function Theory in the Disk
    Iteration of Functions in the Disk
    The Automorphisms of the Ball
    Julia-Carathéodory Theory in the Ball
    Norms
    Boundedness in Classical Spaces on the Disk
    Compactness and Essential Norms in Classical Spaces on the Disk
    Hilbert-Schmidt Operators
    Composition Operators with Closed Range
    Boundedness on Hp (BN)
    Small Spaces
    Compactness on Small Spaces
    Boundedness on Small Spaces
    Large Spaces
    Boundedness on Large Spaces
    Compactness on Large Spaces
    Hilbert-Schmidt Operators
    Special Results for Several Variables
    Compactness Revisited
    Wogen's Theorem
    Spectral Properties
    Introduction
    Invertible Operators on the Classical Spaces on the Disk
    Invertible Operators on the Classical Spaces on the Ball
    Spectra of Compact Composition Operators
    Spectra: Boundary Fixed Point, j'(a)

    Biography

    Carl C. Cowen Jr.