economically sound, i.e., for which the values satisfy desirability and positivity. Put differently, we indicate requirements on … ; desirability ; positivity … fair taxation in TU games by which solidarity among players is expressed. -- Shapley value ; solidarity ; taxation …

surplus division value is pinpointed to one axiom. Moreover, we shed light on solidarity principles embodied in the equal … division value and in the equal surplus division values. -- Solidarity ; nullifying player ; equal division value ; equal … surplus division value ; desirability …

characterization, the null player property indicates the absence of solidarity among the players. First, we replace the null player …-negative. Second, the equal treatment property is strengthened into desirability. This way, we obtain a new characterization of the … Shapley value and the equal surplus division solution. -- Solidarity ; egalitarian Shapley value ; equal division value …

economic consequences. We show in this paper conditions under which solidarity can be a powerful instrument. In a solidary … feelings of mutual exchange (solidarity) within a group. …