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Spektraldarstellung linearer Transformationen des Hilbertschen Raumes, Ergebnisse der Mathematik und ihrer Grenzgebiete No 39 by Sz.-Nagy, Bela Publication: Germany Springer-Verlag 1967 Date: 1967 Availability: Items available: School of Theoretical Physics Fenian Street Stores [515.732 B] (1),
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Introduction to the theory of Hilbert Spaces, volume I by Aronszajn, N. Publication: Oklahoma Research Foundation, Stillwater, Oklahoma 1950 Date: 1950 Availability: Items available: School of Theoretical Physics Fenian Street Stores [515.732 B] (1),