Originally published: New York: Academic Press, 1983.

The goal of this book is to be comprehensive, running the gamut from practical numerical results to a unifying framework of functional analysis, while simultane

Many problems in science and engineering have their mathematical formulation as an operator equation Tx=y, where T is a linear or nonlinear operator between cer

This book is an updated version of the classic 1987 monograph "Spectral Theory and Differential Operators".The original book was a cutting edge account of the t