Operator Approximant Problems Arising from Quantum Theory

by Philip J. Maher

Overview

This book offers an account of a number of aspects of operator theory, mainly developed since the 1980s, whose problems have their roots in quantum theory. The research presented is in non-commutative operator approximation theory or, to use Halmos' terminology, in operator approximants. Focusing on the concept of approximants, this self-contained book is suitable for graduate courses.

Product Details

ISBN-13:	9783319611693
Publisher:	Springer International Publishing
Publication date:	08/02/2017
Edition description:	1st ed. 2017
Pages:	106
Product dimensions:	6.10(w) x 9.25(h) x (d)

About the Author

Philip J. Maher is a former Senior lecturer in mathematics at Middlesex University.

Table of Contents

What this book is about: approximants.- Preliminaries.- Self-adjoint and positive approximants.- Commutator approximants.- Spectral, and numerical range, approximants.- Unitary, isometric and partially isometric approximation of positive operators.