Theory of Linear Operators in Hilbert Space/Two Volumes Bound As One

This classic textbook by two mathematicians from the U.S.S.R.'s prestigious Kharkov Mathematics Institute introduces linear operators in Hilbert space, and presents in detail the geometry of Hilbert space and the spectral theory of unitary and self-adjoint operators. It is directed to students at graduate and advanced undergraduate levels, but because of the exceptional clarity of its theoretical presentation and the inclusion of results obtained by Soviet mathematicians, it should prove invaluable for every mathematician and physicist. 1961, 1963 edition.Akhiezer, N. I. is the author of 'Theory of Linear Operators in Hilbert Space/Two Volumes Bound As One', published 1993 under ISBN 9780486677484 and ISBN 0486677486.