Abstract
If X is a closed subspace of a Banach space L which embeds into a Banach lattice not containing l∞n's uniformly and L/X contains l∞n's uniformly, then X cannot have local unconditional structure in the sense of Gordon-Lewis (GL-l.u.st.).
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Johnson, W.B. Extensions of c0. Positivity 1, 55–74 (1997). https://doi.org/10.1023/A:1009710617692
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DOI: https://doi.org/10.1023/A:1009710617692