English

Geometry of Banach spaces and biorthogonal systems

Functional Analysis 2007-05-23 v1

Abstract

A separable Banach space X contains 1\ell_1 isomorphically if and only if X has a bounded wc_0^*-stable biorthogonal system. The dual of a separable Banach space X fails the Schur property if and only if X has a bounded wc_0^*-biorthogonal system.

Keywords

Cite

@article{arxiv.math/9911156,
  title  = {Geometry of Banach spaces and biorthogonal systems},
  author = {S. J. Dilworth and Maria Girardi and W. B. Johnson},
  journal= {arXiv preprint arXiv:math/9911156},
  year   = {2007}
}
R2 v1 2026-07-22T18:05:19.439Z