An example of an asymptotically Hilbertian space which fails the approximation property

Citation
Pg. Casazza et al., An example of an asymptotically Hilbertian space which fails the approximation property, P AM MATH S, 129(10), 2001, pp. 3017-3023
Citations number
12
Categorie Soggetti
Mathematics
Journal title
PROCEEDINGS OF THE AMERICAN MATHEMATICAL SOCIETY
ISSN journal
00029939 → ACNP
Volume
129
Issue
10
Year of publication
2001
Pages
3017 - 3023
Database
ISI
SICI code
0002-9939(2001)129:10<3017:AEOAAH>2.0.ZU;2-9
Abstract
Following Davie's example of a Banach space failing the approximation prope rty (1973), we show how to construct a Banach space E which is asymptotical ly Hilbertian and fails the approximation property. Moreover, the space E i s shown to be a subspace of a space with an unconditional basis which is "a lmost" a weak Hilbert space and which can be written as the direct sum of t wo subspaces all of whose subspaces have the approximation property.