A geometric proof of Asplund’s differentiability theorem. Proc. internat. Sympos. partial diff. Equ. Geometry normed lin. Spaces II. (English) Zbl 0253.46100


46G05 Derivatives of functions in infinite-dimensional spaces
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[1] E. Asplund,Fréchet differentiability of convex functions, Acta Math.121 (1968), 31–47. · Zbl 0162.17501 · doi:10.1007/BF02391908
[2] M. M. Day,Normed linear spaces, Ergeb. der Math. N. F., Heft 21, 2nd printing, Berlin-Göttingen-Heidelberg, 1962. · Zbl 0100.10802
[3] S. L. Troyanski,On locally uniformly convex and differentiable norms in certain nonseparable Banach spaces, Studia Math.37 (1970–71), 173–180. · Zbl 0214.12701
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