Existence results for equilibria in economies under increasing returns to scale, fixed costs, or showing more general types of non convexity in the production sector, strongly rest on a crucial condition, known as the survival assumption. This assumption is unsatisfactory in the sense that it...

We consider a class of pure exchange economies with externalities. The consumption set and the preferences of each household depend on his initial endowment and on the actions of the other households. We give a definition of competitive equilibrium with externalities which includes as particular...

The purpose of the paper is to introduce a tighter definition for the marginal pricing rule. By means of an example, we illustrate the improvements that one gets with the new definition with respect to the former one with the Clarke's normal come.

This paper deals with the existence of marginal pricing equilibria when it is defined by using a new and tighter normal cone introduced by B. Cornet and M.O. Czarnecki. The main interest of this new definition of the marginal pricing rule comes from the fact that it is more precise in the sense...

We define a continuous-time trading process for Arrow-Debreu exchange economies such that (1) At each time, myopic traders play a (weakly) dominant strategy in Mertens' (2003) limit price strategic market game ; (2) existence of continuous trade curves holds under weak conditions and in...

Static competitive equilibria in economies with incomplete markets are generically constrained suboptimal. Allocations induced by strategic equilibria of imperfectly competitive markets are also generically inefficient. In both cases, there is scope for Pareto-improving amendments. Considering...

In the spirit of Smale's work, we consider a pure exchange economy with general consumption sets. We consider the case in which the consumption set of each household is described in terms of an inequality on a function called possibility function. The possibility function represents the...

Each Party of the Kyoto Protocol on Climate Change must achieve quantified green-house gases emission reduction. one of the major policy instrument to be used to comply with these commitments is the opening of an emission allowances market. This paper analyzes, in the general equilibrium...

We define a non-tâtonnement dynamics in continuous-time for pure-exchange economies with outside and inside fiat money. Traders are myopic, face a cash-in-advance constraint and play dominant strategies in a short-run monetary strategic market game involving the limit-price mechanism. The...

In this paper, the dynamic behaviour of the capital growth rate is analyzed using an overlapping-generations model with continuous trading and finitely lived agents. Assuming a technology satisfying constant returns to capital, the equilibrium growth rate is piecewise-defined by functional...