RT Journal Article T1 Solidarity to achieve stability A1 Alcalde-Unzu, Jorge A1 Gallo, Oihane A1 Iñarra, Elena A1 Moreno-Ternero, Juan D. K1 Solidarity K1 Stability K1 Coalition formation K1 Sharing rule AB Agents may form coalitions. Each coalition shares its endowment among its agents by applying a sharing rule. The sharing rule induces a coalition formation problem by assuming that agents rank coalitions according to the allocation they obtain in the corresponding sharing problem. We characterize the sharing rules that induce a class of stable coalition formation problems as those that satisfy a natural axiom that formalizes the principle of solidarity. Thus, solidarity becomes a sufficient condition to achieve stability. PB Elsevier YR 2024 FD 2024 LK https://hdl.handle.net/10433/20411 UL https://hdl.handle.net/10433/20411 LA en NO European Journal of Operational Research Volume 315, Issue 1, 16 May 2024, Pages 368-377 NO Proyectos de investigaciónFECYT -- FUNDAMENTOS NORMATIVOS PARA INDICADORES SOCIO-ECONOMICOS NO Departament of Economics DS RIO RD May 9, 2026