00996nam0-22003491i-450-9900014883304033210-444-88797-0000148833FED01000148833(Aleph)000148833FED0100014883320011215d2001----km-y0itay50------baengNLa---a---001yy<<The >>theory of fractional powers of operatorsC. Martinez Carracedo, M. Sanz AlixAmsterdamNorth-Hollandc2001xii, 365 p.24 cmNorth-Holland mathematics studies187Calcolo funzionale515.724621Martinez Carracedo,CelsoSanz Alix,MiguelITUNINARICAUNIMARCBK990001488330403321C-21-(18718038MA1MA147A6047B44Theory of fractional powers of operators377919UNINA