It is shown, using the Borwein¿Preiss variational principle that for every continuous convex function f on a weakly compactly generated space X, every x0 ? X and every weakly compact convex symmetric set K such that \cspan K = X, there is a point of Gâteaux differentiability of f in x0 + K. This extends a Klee's result for separable spaces.
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