1. Departamento de Matem??ticas, Universidad de Extremadura, Avda de Elvas s/n, 06011, Badajoz, Spain 2. Dipartimento di Matematica, Universit?? di Bologna, Piazza Porta S. Donato 5, 40126, Bologna, Italy
Abstract:
We consider the notion of smallness and its applications to the characterization of isomorphically polyhedral Banach spaces and the existence of different coverings of either the unit sphere or the unit ball of a Banach space.