Polynominal approximation in certain weighted Hilbert spaces of entire functions.
Sidney L. Hantler (1976)
Mathematica Scandinavica
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Sidney L. Hantler (1976)
Mathematica Scandinavica
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D.A. EDWARDS (1955)
Mathematica Scandinavica
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Esben T. Kehlet (1978)
Mathematica Scandinavica
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T. M. Wolniewicz (1987)
Colloquium Mathematicae
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Jorgen Christian Ridder Ebbesen (1984)
Mathematica Scandinavica
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Petruševski, Ljiljana (1989)
Publications de l'Institut Mathématique. Nouvelle Série
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J. Vesterstrom, Wilbert Wils (1970)
Mathematica Scandinavica
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Schôichi Ôta (2010)
Colloquium Mathematicae
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The notion of strong circularity for an unbounded operator is introduced and studied. Moreover, q-deformed circularity as a q-analogue of circularity is characterized in terms of the partially isometric and the positive parts of the polar decomposition.
Wilbert Wils (1970)
Mathematica Scandinavica
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Lars Inge Hedberg (1968)
Mathematica Scandinavica
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Kozo Yatuba (1975)
Mathematica Scandinavica
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Yngve Domar (1967)
Mathematica Scandinavica
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Lars-Ake Lindahl (1970)
Mathematica Scandinavica
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T. Gillespie (1997)
Banach Center Publications
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This paper gives a survey of some recent developments in the spectral theory of linear operators on Banach spaces in which the Hilbert transform and its abstract analogues play a fundamental role.