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Self-adjoint operators. (English) Zbl 0317.47016
Lecture Notes in Mathematics. 433. Berlin-Heidelberg-New York: Springer-Verlag. VI, 115 p. DM 18.00 (1975).

MSC:
47B25 Linear symmetric and selfadjoint operators (unbounded)
47A20 Dilations, extensions, compressions of linear operators
47-02 Research exposition (monographs, survey articles) pertaining to operator theory
47A55 Perturbation theory of linear operators