00497nam a22001217a 4500020002400000082001500024100002000039245005500059260003900114300003400153500005100187650013700238  a9788126511914 (pbk)  a515.7bKRE  aKreyszig, Erwin  aIntroductory functional analysis with applications  aNew DelhibJohn Wiley & Sonsc2014  axiv, 688 p.b: ill.c; 21 cm.  aIncludes bibliographical references and index.  aFunctional analysisvSpectral theoryvLinear operatorsvMetric spacesvBanach spacesvHilbert spacesvQuantum mechanicsvMathsvFBSH