Stability constants of the weak${}^{\ast }$ fixed point property for the space ${\ell }_1$

Emanuele Casini, Enrico Miglierina, Łukasz Piasecki +1

The main aim of the paper is to study some quantitative aspects of the stability of the weak${}^{\ast }$ fixed point property for nonexpansive maps in ${\ell }_1$ (shortly, $w^{\ast }$-fpp). We foc…