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Trace-Class Operators in CSL Algebras

Published online by Cambridge University Press:  20 November 2018

Shlomo Rosenoer*
Affiliation:
Department of Mathematics University of Toronto Toronto, Ontario, Canada M5S 1A1
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Abstract

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In this note we show that if 𝓛 is a commutative subspace lattice, then every trace-class operator in Alg 𝓛 lies in the norm-closure of the span of rank-one operators in Alg 𝓛. We also give an elementary proof of a recent result of Davidson and Pitts that if 𝓛 is a CSL generated by completely distributive lattice and finitely many commuting chains, then 𝓛 is compact in the strong operator topology if and only if 𝓛 is completely distributive.

Keywords

Type
Research Article
Copyright
Copyright © Canadian Mathematical Society 1992

References

1. Arveson, W. B., Operator algebras and invariant subspaces, Ann. Math. (3) 100(1974), 433532.Google Scholar
2. Davidson, K. R., Open problems in reflexive algebras, Rocky Mnt. Math. J., (2) 20(1990), 317330.Google Scholar
3. Davidson, K. R., Nest Algebras , Research Notes in Math. 191, Pitman, Boston-London-Melbourne, 1988.Google Scholar
4. Davidson, K. R. and Pitts, D. R., Compactness and complete distributivity for commutative subspace lattices, J. London Math. Soc, to appear.Google Scholar
5. Feintuch, A., There exist nonreflexive inflations, Mich. Math. J. 21(1974), 1317.Google Scholar
6. Froelich, J., Compact operators, invariant subspaces and spectral synthesis , Ph.D. Thesis, Univ. of Iowa, 1984.Google Scholar
7. Hopenwasser, A., Laurie, C. and Moore, R., Reflexive algebras with completely distributive subspace lattices, J. Operator Theory 11(1984), 91108.Google Scholar
8. Hopenwasser, A. and Moore, R., Finite rank operators in reflexive algebras, J. London Math. Soc. (2) 27(1983), 331338.Google Scholar
9. Laurie, C., On density of compact operators in reflexive algebras, Indiana U. Math. J. 30(1981), 116.Google Scholar
10. Shul'man, V., On reflexive operator algebras, Math. USSR-Sb. 16(1972), 181189.Google Scholar