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1
Lectures on functional analysis and applications / V.S. Pugachev, I.N. Sinitsyn; translated by I. V. Sinitsyna
Singapore : World Scientific, 1999
730tr. ; 23cm.

A collection of lectures on functional analysis and applications. Areas addressed include: sets, spaces and functions; integrals; topological spaces; spaces of operators and functionals; linear operators; spectral theory of linear operators; and nonlinear problems of functional analysis
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2
Operator functions and operator equations / M. I. Gil'
Singapore : World Scientific Publishing, 2018
260tr. ; 24cm.

This book is devoted to norm estimates for operator-valued functions of one and two operator arguments, as well as to their applications to spectrum perturbations of operators and to linear operator equations, i.e. to equations whose solutions are linear operators. Linear operator equations arise in both mathematical theory and engineering practice. The norm estimates suggested in the book have applications to the theories of ordinary differential, difference, functional-differential and integro-differential equations, as well as to the theories of integral operators and analytic functions. This book provides new tools for specialists in matrix theory and functional analysis. A significant part of the book covers the theory of triangular representations of operators that was developed by L de Branges, M S Brodskii, I C Gohberg, M G Krein, M S Livsic and other mathematicians.
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