Davies, E. B. Linear operators and their spectra/ E. Brian Davies. - Cambridge, UK: Cambridge University Press, 2007. - xii, 451 p.; 24 cm. - Cambridge studies in advanced mathematics; 106 . - Cambridge studies in advanced mathematics; 106. . Includes bibliographical references and index. ISBN: 9780521866293 0521866294 Nat. Bib. No.: GBA6A2289. bnb Subjects--Topical Terms: Linear operators.Spectral theory (Mathematics). Dewey Class. No.: 515.7246 / D255l