English

Separable Lindenstrauss spaces whose duals lack the weak$^*$ fixed point property for nonexpansive mappings

Functional Analysis 2015-04-01 v1

Abstract

In this paper we study the ww^*-fixed point property for nonexpansive mappings. First we show that the dual space XX^* lacks the ww^*-fixed point property whenever XX contains an isometric copy of the space cc. Then, the main result of our paper provides several characterizations of weak-star topologies that fail the fixed point property for nonexpansive mappings in 1\ell_1 space. This result allows us to obtain a characterization of all separable Lindenstrauss spaces XX inducing the failure of ww^*-fixed point property in XX^*.

Cite

@article{arxiv.1503.08875,
  title  = {Separable Lindenstrauss spaces whose duals lack the weak$^*$ fixed point property for nonexpansive mappings},
  author = {Emanuele Casini and Enrico Miglierina and Łukasz Piasecki},
  journal= {arXiv preprint arXiv:1503.08875},
  year   = {2015}
}
R2 v1 2026-06-22T09:06:19.612Z