We explore the relationship between non-manipulability via merging (splitting) and strong non-manipulability via merging (splitting). We show that although, in general, these non-manipulability properties are not equivalent, under the principle of solidarity, fulfilled by a wide range of...

We investigate manipulability in the setting of financial systems by considering two weak forms of immunity: non-manipulability via merging and nonmanipulability via splitting. Not surprisingly, non-manipulability via splitting is incompatible with some basic axioms: claim boundedness, limited...

We introduce the constrained egalitarian surplus-sharing rule fCE, which distributes an amount of a divisible resource so that the poorer agents' resulting payoffs become equal but not larger than any remaining agent's status quo payoff. We show that fCE is characterized by Pareto optimality,...

We show that on the domain of convex games, Dutta-Ray's egalitarian solution is characterized by core selection, aggregate monotonicity, and bounded richness, a new property requiring that the poorest players cannot be made richer within the core. Replacing "poorest" by "poorer" allows to...