Spectral Theory for Linear Operators

Demicompactness and Perturbation Theory

By: Bilel Krichen

Write A Review

Hardcover | 1 August 2025 | Edition Number 1

At a Glance

Hardcover
346 Pages

Dimensions(cm)
23.4 x 15.6 x 2.06

Hardcover

$604.99

or 4 interest-free payments of $151.25 with

Ships in 15 to 25 business days

This book focuses on spectral theory for linear operators involving bounded or unbounded demicompact linear operators acting on Banach spaces. This class played an important rule in the theory of perturbation. More precisely, it contributed in the construction of several classes of stability of essential spectra for bounded or unbounded linear operators. We should emphasize that this book is the first one dealing with the demicompactness concept and its relation with Fredholm theory for bounded and unbounded linear operators as well as block operator matrices acting on Banach spaces. Researchers, as well as graduate students in applicable analysis, will find that this book constitutes a useful survey of the fundamental principles of the subject. Nevertheless, the reader is assumed to be, at least, familiar with some related sections concerning notions like the compact, Fredholm operators, the basic tools of the weak topology, the concept of measures of weak noncompactness, etc. Otherwise, the reader is urged to consult the recommended literature in order to benefit fully from this book.

Features -

â¢ First book dealing with demicompactness theory and its relation with Fredholm theory for bounded and unbounded linear operators as well as block operator matrices acting on Banach spaces.

â¢ Self-contained coverage of classical and more recent classes of perturbations involving the concept of demicompactness.

â¢ Offers a useful survey of the fundamental principles of spectral theory.

â¢ Provides applications for problem arising in physics and which are modeled by integral or partial differential equations.

Shipping

	Standard Shipping	Express Shipping
Metro postcodes:	$9.99	$14.95
Regional postcodes:	$9.99	$14.95
Rural postcodes:	$9.99	$14.95

Orders over $79.00 qualify for free shipping.

How to return your order

At Booktopia, we offer hassle-free returns in accordance with our returns policy. If you wish to return an item, please get in touch with Booktopia Customer Care.

Additional postage charges may be applicable.