We give an axiomatization of the aspiration core on the domain of all TU-games using a relaxed feasibility condition, non-emptiness, individual rationality, and generalized versions of the reduced game property (consistency) and superadditivity. Our axioms also characterize the C-core (Guesnerie...

Any TU-game can be generated from a production economy with indivisible labor inputs. An equilibrium of that economy always exists after a central intervention that taxes income and subsidizes production. The set of equilibrium allocations corresponding to the smallest income tax coincides with...