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On normal derivations. (English) Zbl 0255.47036


MSC:

47A10 Spectrum, resolvent
47B15 Hermitian and normal operators (spectral measures, functional calculus, etc.)
58B10 Differentiability questions for infinite-dimensional manifolds
Full Text: DOI

References:

[1] Ion Colojoară and Ciprian Foiaş, Theory of generalized spectral operators, Gordon and Breach, Science Publishers, New York-London-Paris, 1968. Mathematics and its Applications, Vol. 9. · Zbl 0189.44201
[2] Jôsuke Hakeda and Jun Tomiyama, On some extension properties of von Neumann algebras, Tôhoku Math. J. (2) 19 (1967), 315 – 323. · Zbl 0175.14201 · doi:10.2748/tmj/1178243281
[3] Paul R. Halmos, A Hilbert space problem book, D. Van Nostrand Co., Inc., Princeton, N.J.-Toronto, Ont.-London, 1967. · Zbl 0144.38704
[4] G. Lumer, Semi-inner-product spaces, Trans. Amer. Math. Soc. 100 (1961), 29 – 43. · Zbl 0102.32701
[5] J. P. Williams, Finite operators, Proc. Amer. Math. Soc. 26 (1970), 129 – 136. · Zbl 0199.19302
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