Quantitative unconditionality of Banach spaces E for which K(E) is an M-ideal in ℒ(E)
Quasi-Banach Spaces which are Unique Predual.
Quasi-reflexive Banach spaces
Quelques propriétés des espaces de Banach stables
Quelques remarques sur la propriété (C) des espaces de Banach
Quelques résultats concernant l'inconditionnalité
Quotients of Continuous Convex Functions on Nonreflexive Banach Spaces
On each nonreflexive Banach space X there exists a positive continuous convex function f such that 1/f is not a d.c. function (i.e., a difference of two continuous convex functions). This result together with known ones implies that X is reflexive if and only if each everywhere defined quotient of two continuous convex functions is a d.c. function. Our construction also gives a stronger version of Klee's result concerning renormings of nonreflexive spaces and non-norm-attaining functionals.