The goal of the paper is to introduce a family of values for transferable utility cooperative games that are proportional for two- person games and as well satisfying some combinatorial structure com- posed by contributions of complementary coalitions or, to less extent, marginal contributions...

This paper is concerned with distributions of income and the ordering of related Lorenz curves. By introducing appropriate preference relations on the set of Lorenz curves, two altenative axiomatic characterization of Lorenz curve orderings are proposed. Moreover, the Gini coefficient is...