On two questions of Halmos concerning subspace lattices

Author:

Longstaff W. E.,Rosenthal Peter

Abstract

An example is constructed of a nonreflexive pentagonal lattice of subspaces. It follows that reflexivity is not invariant under lattice isomorphism, even for finite lattices.

Publisher

American Mathematical Society (AMS)

Subject

Applied Mathematics,General Mathematics

Reference6 articles.

1. Invariant para-closed subspaces;Foiaş, Ciprian;Indiana Univ. Math. J.,1971

2. Ten problems in Hilbert space;Halmos, P. R.;Bull. Amer. Math. Soc.,1970

3. Reflexive lattices of subspaces;Halmos, P. R.;J. London Math. Soc. (2),1971

4. Reflexive subspace lattices in finite-dimensional Hilbert spaces;Harrison, K. J.;Indiana Univ. Math. J.,1977

5. Distinguished rings of linear transformations;Johnson, R. E.;Trans. Amer. Math. Soc.,1964

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1. REFLEXIVE INDEX OF A FAMILY OF SUBSPACES;Bulletin of the Australian Mathematical Society;2014-04-02

2. Abstract reflexive sublattices and completely distributive collapsibility;Bulletin of the Australian Mathematical Society;1998-10

3. Invariant subspaces of operator algebras;Journal of Soviet Mathematics;1991-05

4. Non-reflexive double triangles;Journal of the Australian Mathematical Society. Series A. Pure Mathematics and Statistics;1983-12

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