We characterize the Pareto correspondence, the core and the Walras solution using the axioms of consistency, converse consistency and one-person rationality. Consistency and its converse are defined with respect to suitably constructed reduced economies for each case. Our results hold for the well-known class of coalitional production economies, which covers exchange economies as a particular c...

We prove the existence of general equilibrium for continuous-time overlappinggenerations models. Previous theorems exclude all non-linear C.E.S. and von Neumann Morgenstern preferences and exclude production. Our primitive assumptions are satisfied by such preferences and by all Markovian production technologies satisfying Bewley's assumptions for Arrow Debreu models provided that storage is po...

We analyze an exchange economy of unsecured credit where borrowers have the option to declare bankruptcy in which case they are temporarily excluded from financial markets. Endogenous credit limits are imposed that are just tight enough to prevent default. Economies with temporary exclusion differ from their permanent exclusion counterparts in two important properties. If households are extreme...

An appropriate (interim) notion of the core for an economy with incomplete information depends on the amount of information that coalitions can share. The coarse and fine core, as originally defined by Wilson (1978), correspond to two polar cases, involving no information sharing and arbitrary information sharing, respectively. We propose a new core notion, the credible core, which incorporates...

In the present paper general stationary overlapping generations economies with many commodities in every period and many different consumers in every generation are considered. A government maximizes a utilitarian social welfare function, which is the sum of weighted averages of utilities for generations, through fiscal policy, i.e., monetary transfers and taxes. Situations both with and withou...

Many stockholders irrationally believe that high recent market returns predict high future market returns. I argue that the presence of these extrapolative investors can help resolve the equity premium puzzle if the elasticity of intertemporal substitution (EIS) is greater than unity. Extrapolators’ overreaction to dividend news generates countercyclical expected returns. Rational investors res...

We provide a mechanism that approximately implements the Mas-Colell bargaining set in subgame perfect equilibrium. The mechanism is based on the definition of the Mas-Colell bargaining set, and respects feasibility in and out of equilibrium. Resumen. Este trabajo propone un mecanismo que implementa aproximadamente el conjunto de negociación de Mas-Colell en equilibrio perfecto en subjuegos. El ...

We study the ta( tonnement process in an exchange economy with three commodities and three agents. We argue that for the multiplicative ta( tonnement process the simplex is a natural normalization rule. We analyse the in#uence of symmetry in preferences and endowments on the dynamics of the ta( tonnement process. Depending on this symmetry there are di!erent bifurcation routes to chaos. In part...

In an exchange economy under uncertainty populated by multiple consumers, we how the heterogeneity in the individual consumers’ subjective beliefs affect the representative consumer’s utility function. We derive a formula that indicates that the more heterogeneous the individual consumers’ beliefs are, the higher probabilities the representative consumer’s belief attaches to extreme events that...

In a two-period pure exchange economy with financial assets, a temporary financial equilibrium is an equilibrium of the current spot and security markets given forecasts of future prices and returns. The temporary equilibrium model can then be interpreted as a Walrasian model where preferences depend on prices. This idenfication implies, among other consequences, the generic determinateness of ...