A note on singular points of convex functions in Banach spaces
Luděk Zajíček (1993)
Acta Universitatis Carolinae. Mathematica et Physica
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Luděk Zajíček (1993)
Acta Universitatis Carolinae. Mathematica et Physica
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Zajíček, L.
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Libor Veselý (1986)
Commentationes Mathematicae Universitatis Carolinae
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Marianna Csörnyei, Assaf Naor (2003)
Studia Mathematica
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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.
Eva Matoušková (1993)
Acta Universitatis Carolinae. Mathematica et Physica
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