Any allocation rule that picks only core allocations is manipulable via segmentation. That is, there exists an economy with a coalition of agents such that, once this coalition splits momentarily from the rest of the economy and institutes the allocation rule within itself, no matter which individually rational sub-allocation the complementary coalition picks, when we paste all the agents back ...

We study decentralized trade processes in general exchange economies and house allocation problems with and without money. The processes are a¤ected by persistent random shocks stemming from agents’maximization of random utility. By imposing structure on the utility noise term –logit distribution–, one is able to calculate exactly the stationary distribution of the perturbed Markov process for ...

In an overlapping generations model with Cournot competition on the goods market it is shown that a continuum of stationary states and perfect foresight trajectories exists with unemployment at arbitrary low wages. Decisive for this is the influence that different forecast functions have on the objective demand curve, even though they are consistent with perfect foresight. With an example it is...

The long-term trends of urbanization suggest: not only have more cities formed, but the leading metropolises have grown larger, with a number of peripheral subcenters developing over time. Conventional models of urban growth are limited, in that commuting cost and congestion eventually result in decreasing returns in a monocentric city as population becomes very large. We construct a general-eq...

In production economies with unequal labor skills, we study axiomatic characterizations of Pareto subsolutions which are implementable by sharing mechanisms in Nash, strong Nash, and subgame perfect equilibria. The sharing mechanism allows agents to work freely and distributes the produced output to the agents, according to the profile of labor hours and the information on demands, prices, and ...

In this paper, we study three prototypical models of noncooperative oligopoly in markets with a continuum of traders: the model of Cournot-Walras equilibrium of Codognato and Gabszewicz (1991), the model of Cournot-Nash equilibrium of Lloyd S. Shapley, and the model of Cournot-Walras equilibrium of Busetto et al. (2008). We argue that these models are all distinct and only the Shapley’s model w...

A significant public policy trend is the increased use of alternative dispute resolution (ADR) procedures, such as mediation and arbitration, in a variety of settings. Mediation is the most utilized, yet least analyzed, of these procedures. This article proposes a general equilibrium framework to analyze mediation. Mediators function as Walrasian auctioneers by altering tradeoff among bargainin...

We associate to any pure exchange economy a game with only two players, regardless of the number of consumers. In this twoplayer game, each player represents a different role of the society, formed by all the individuals in the economy. Player 1 selects feasible allocations trying to make Pareto improvements. Player 2 chooses an alternative from the wider range of allocations that are feasible ...

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...