On the reflexivity of pairs of isometries and of tensor products of some operator algebras
Marek Ptak (1986)
Studia Mathematica
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Marek Ptak (1986)
Studia Mathematica
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Mustafayev, H.S. (1996)
International Journal of Mathematics and Mathematical Sciences
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Štefan Drahovský, Michal Zajac (1993)
Mathematica Bohemica
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In this paper a complete characterization of hyperreflexive operators on finite dimensional Hilbert spaces is given.
Marek Słociński (1976)
Studia Mathematica
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Ptak Marek
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CONTENTS1. Introduction...................................................................................................52. N-tuples of linear transformations in finite-dimensional space......................83. Toeplitz operators on the polydisc and the unit ball....................................184. Subspaces of weighted shifts.....................................................................235. Joint spectra for N-tuples of operators........................................................276....
R. Ovsepian, A. Pełczyński (1975)
Studia Mathematica
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Lavon Page (1982)
Banach Center Publications
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W. Johnson, M. Zippin (1995)
Studia Mathematica
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It is proved that every operator from a weak*-closed subspace of into a space C(K) of continuous functions on a compact Hausdorff space K can be extended to an operator from to C(K).
R. Berntzen, A. Sołtysiak (1997)
Studia Mathematica
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The algebra B(ℋ) of all bounded operators on a Hilbert space ℋ is generated in the strong operator topology by a single one-dimensional projection and a family of commuting unitary operators with cardinality not exceeding dim ℋ. This answers Problem 8 posed by W. Żelazko in [6].