01155nam--2200385---450-99000187778020331620040727113023.03-540-20246-3000187778USA01000187778(ALEPH)000187778USA0100018777820040727d2003----km-y0itay0103----baengDEa|||||||001yyOperator functions and localization of spectraMichael I. Gil'Berlin [etc.]Springercopyr. 2003XIV, 256 p.ill.24 cm.Lecture notes in mathematics18302001Lecture notes in mathematics18302001001-------2001Operatori lineariTeoria spettraleMatematica516.35GIL',Mikhail Iosifovich150731ITsalbcISBD990001877780203316510 LNM 18300030004/CBS51000114200BKSCIRIVELLI9020040727USA011130Operator functions and localization of spectra253263UNISA