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One of the most important chapters in modern functional analysis is the theory of approximate methods for solution of various mathematical problems. Besides pro

This book offers an elementary and self-contained introduction to many fundamental issues concerning approximate solutions of operator equations formulated in a

Researchers are faced with the problem of solving a variety of equations in the course of their work in engineering, economics, physics, and the computational s

Abstract models for many problems in science and engineering take the form of an operator equation. The resolution of these problems often requires determining