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arXiv:math/9710204 [math.FA]AbstractReferencesReviewsResources

Superreflexivity and J-convexity of Banach spaces

Joerg Wenzel

Published 1997-10-15Version 1

A Banach space X is superreflexive if each Banach space Y that is finitely representable in X is reflexive. Superreflexivity is known to be equivalent to J-convexity and to the non-existence of uniformly bounded factorizations of the summation operators S_n through X. We give a quantitative formulation of this equivalence. This can in particular be used to find a factorization of S_n through X, given a factorization of S_N through [L_2,X], where N is `large' compared to n.

Categories: math.FA
Subjects: 46B07, 46B10
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