00341nam a2200121Ia 4500082002000000100003400020245003800054260003600092300001500128490004200143500000500185700002900190  a515.72bB877.IO  aBrown, Arlen and Pearcy, Carl  aIntroduction to operator theoryb  aNew YorkbSpringer-Verlagc1977  axiv, 474p.  aGraduate texts in Mathematicsv v. 55  a  aPearcy, Carl ; jt. auth.