Social loss with respect to the core of an economy with externalities

Abstract

We consider a pure exchange economy with externalities. We adopt a cooperative approach to equilibrium analysis, allowing each individual to cooperate with others and to form coalitions. Individual preferences are affected by the consumption of all other agents in the economy, and the consumption set of each agent is affected by the coalition to which he/she belongs. Following Montesano (2002), we introduce a measure of social loss with respect to the γ-core and α-core of the economy which completely characterizes the corresponding core allocations.

Core and stable sets of exchange economies with externalities

“…This is the solution concept which corresponds to the Nash strong equilibria for normal games (see,Aumann 1961); for a general equilibrium framework, it has been recently analyzed inDufwenberg et al (2011), Di Pietro et al (2020.…”