Ball covering property from commutative function spaces to non-commutative spaces of operators

نویسندگان

چکیده

A Banach space is said to have the ball-covering property (abbreviated BCP) if its unit sphere can be covered by countably many closed, or equivalently, open balls off origin. Let K a locally compact Hausdorff and X space. In this paper, we give topological characterization of BCP, that is, continuous function C0(K) has (uniform) BCP only countable π-basis. Moreover, stability theorem: vector-valued C0(K,X) (strong uniform) π-basis BCP. We also explore more examples for on non-commutative spaces operators B(X,Y). particular, these results imply B(c0), B(ℓ1) every subspace containing finite rank in B(ℓp) 1<p<∞ all B(L1[0,1]) fails Using those characterizations results, show not hereditary 1-complemented subspaces (even completely operator sense) constructing two different counterexamples.

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ژورنال

عنوان ژورنال: Journal of Functional Analysis

سال: 2022

ISSN: ['0022-1236', '1096-0783']

DOI: https://doi.org/10.1016/j.jfa.2022.109502