An almost nowhere Fréchet smooth norm on superreflexive spaces
Volume 133 / 1999
Studia Mathematica 133 (1999), 93-99
DOI: 10.4064/sm-133-1-93-99
Abstract
Every separable infinite-dimensional superreflexive Banach space admits an equivalent norm which is Fréchet differentiable only on an Aronszajn null set.
