On semi-groups of contractions in Hilbert spaces
W. Mlak (1966)
Studia Mathematica
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Displaying similar documents to “On the semi-groups of isometries”
On semi-groups of contractions in Hilbert spaces
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Intrinsic description of the Sz.-Nagy-Brehmer unitary dilation
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On semi-inner product spaces, I
T. Husain, B. D. Malviya (1972)
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On semi-inner product spaces, II
T. Husain, B. D. Malviya (1973)
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On the structure of commuting isometries
Karel Horák, Vladimír Müller (1987)
Commentationes Mathematicae Universitatis Carolinae
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Unitarily invariant norms related to semi-finite factors
Junsheng Fang, Don Hadwin (2015)
Studia Mathematica
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Let ℳ be a semi-finite factor and let 𝓙(ℳ ) be the set of operators T in ℳ such that T = ETE for some finite projection E. We obtain a representation theorem for unitarily invariant norms on 𝓙(ℳ ) in terms of Ky Fan norms. As an application, we prove that the class of unitarily invariant norms on 𝓙(ℳ ) coincides with the class of symmetric gauge norms on a classical abelian algebra, which generalizes von Neumann's classical 1940 result on unitarily invariant norms on Mₙ(ℂ). As another...
A generalisation of normal spaces
S. P. Arya, M. P. Bhamini (1983)
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The unitary amicable pairs to .
Najar, Rudolph M. (1995)
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Mean value theorems for linear and semi-linear rotation invariant operators
Bogdan Ziemian (1990)
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