English

A new proof of James' sup theorem

Functional Analysis 2007-05-23 v1

Abstract

We provide a new proof of James' sup theorem for (non necessarily separable) Banach spaces. One of the ingredients is the following generalization of a theorem of Hagler and Johnson (1977) : "If a normed space EE does not contain any asymptotically isometric copy of 1(\IN)\ell^1(\IN), then every bounded sequence of EE' has a normalized block sequence pointwise converging to 0".

Keywords

Cite

@article{arxiv.math/0505176,
  title  = {A new proof of James' sup theorem},
  author = {Marianne Morillon},
  journal= {arXiv preprint arXiv:math/0505176},
  year   = {2007}
}
R2 v1 2026-07-22T17:19:09.625Z