Abstract
We give a geometric characterization of the convex subsets of a Banach space with the property that for any two convex continuous functions on this set, if their sum is Lipschitz, then the functions must be Lipschitz. We apply this result to the theory of Δ-convex functions.
Original language | English (US) |
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Pages (from-to) | 269-286 |
Number of pages | 18 |
Journal | Studia Mathematica |
Volume | 158 |
Issue number | 3 |
DOIs | |
State | Published - 2003 |
Keywords
- Convex functions
- Lipschitz functions
- Δ-convex mappings
ASJC Scopus subject areas
- General Mathematics