ArticleOriginal scientific text
Title
A note on the hyperreflexivity constant for certain reflexive algebras
Authors 1
Affiliations
- Department of Mathematical Science, Graduate School of Science and Technology, Niigata University, Niigata 950-2181, Japan
Abstract
Using results on the reflexive algebra with two invariant subspaces, we calculate the hyperreflexivity constant for this algebra when the Hilbert space is two-dimensional. Then by the continuity of the angle for two subspaces, there exists a non-CSL hyperreflexive algebra with hyperreflexivity constant C for every C>1. This result leads to a kind of continuity for the hyperreflexivity constant.
Bibliography
- M. Anoussis, A. Katavolos and M. S. Lambrou, On the reflexive algebra with two invariant subspaces, J. Operator Theory 30 (1993), 267-299.
- W. Argyros, M. S. Lambrou and W. Longstaff, Atomic Boolean subspace lattices and applications to the theory of bases, Mem. Amer. Math. Soc. 445 (1991).
- W. Arveson, Ten Lectures on Operator Algebras, CBMS Regional Conf. Ser. in Math. 55, Amer. Math. Soc., Providence, 1984.
- A. Katavolos, M. S. Lambrou and W. Longstaff, The decomposability of operators relative to two subspaces, Studia Math. 105 (1993), 25-36.
- M. S. Lambrou and W. Longstaff, Unit ball density and the operator equation AX=YB, J. Operator Theory 25 (1991), 383-397.
- M. Papadakis, On hyperreflexivity and rank one density for non-CSL algebras, Studia Math. 98 (1991), 11-17.
Pages:
203-206
Main language of publication
English
Received
1996-06-17
Accepted
1998-11-23
Published
1999
Exact and natural sciences