Second order differentiability of convex functions in Banach spaces

Borwein, Jonathan M.; Noll, Dominikus

doi:10.1090/S0002-9947-1994-1145959-4

Second order differentiability of convex functions in Banach spaces
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by Jonathan M. Borwein and Dominikus Noll PDF

Trans. Amer. Math. Soc. 342 (1994), 43-81 Request permission

Abstract:

We present a second order differentiability theory for convex functions on Banach spaces.

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