On convexity and supermodularity

Massimo Marinacci and Luigi Montrucchio

ICER Working Papers - Applied Mathematics Series from ICER - International Centre for Economic Research

Abstract: Concavity and supermodularity are in general independent properties. A class of functionals defined on a lattice cone of a Riesz space has the Choquet property when it is the case that its members are concave whenever they are supermodular. We show that for some important Riesz spaces both the class of positively homogeneous functionals and the class of translation invariant functionals have the Choquet property. We extend in this way the results of Choquet [1] and Konig [4].

Date: 2005-03
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