00357    a2200121   4500008004200000020001800042082001900060100002800079245005200107260004100159300002800200777000700228250224b        |||||||| |||| 00| 0 eng d   a9780000988690  a515.7bH249.FA  aHansen, Vagh Lundsgaard  aFunctional analysisb: entering hilbert space /  aNew Jersey:bWorld Scientific,c2023  axvi, 176p. Bibl. Index.  yBK