We characterize intertemporal utility functions over heterogeneous goods that feature (i) a constant elasticity of … the goods. We find that a standard (stationary) intertemporal utility function is consistent with these two properties if … elasticities of substitution are identical, or if the instantaneous utility function is Cobb-Douglas. We also characterize the …

The quasi-linear quadratic utility model is widely used in economics. The knowledge of its exact origin is less …

Does removing the constraints of time and place of work increase the utility of workers and firms? We design a …

on the one hand and the core property of an allocation on the other. In particular we show that it is an inhomogeneous … sacrifice') which is derived from the egalitarian-equivalent concept suggested by Moulin (1987). We also develop a simple core … test by which it can be checked whether a given allocation is in the core thus being a possible outcome of a cooperative …

incentive compatible core can be empty, even if utility functions are quasi-linear. If, in addition to quasi-linearity, further …The ex ante incentive compatible core of an exchange economy with private information is the (standard) core of a … assumptions are made (like independent private values), the non-emptiness of the core follows nevertheless from d?Aspremont and …

) coalitional equilibrium, describe a (cooperative) partition form game. A coalition is core-stable if the core of a suitable … which the bidders' final utility possibly depends on the winner's identity. We show that such direct externalities offer a …