Introduction

The precise mathematical investigation of various natural phenomena is an old and difficult problem. This book is the first to deal systematically with the general non-selfadjoint problems in mechanics and physics.

It deals mainly with bounded domains with smooth boundaries, but also considers elliptic boundary value problems in tube domains, i.e., in non-smooth domains.

This volume will be of particular value to those working in differential equations, functional analysis, and equations of mathematical physics.