01059nam--2200349---450-9900006186302033160061863USA010061863(ALEPH)000061863USA01006186320010911d1973----km-y0itay0103----baengUS||||||||001yySpectral theory of operators in Hilbert spaceNew YorkSpringer Verlag1973VIII, 244 p.ill.23 cmApplied Mathematical Sciences92001Applied Mathematical Sciences9515.73FRIEDRICHS,K.O.335021ITsalbcISBD990000618630203316510 AMS 9 B7223 CBS51000108042510 AMS 9 A3491 CBS510 AMS00108043BKSCIPATTY9020010911USA01095220020403USA011711PATRY9020040406USA011643Spectral theory of operators in Hilbert space956807UNISA