In this paper we analyze the welfare properties of the set of Drèze equilibria for economies with incomplete markets and firms. The well known fact that a Drèze equilibrium need not be constrained Pareto optimal is often attributed to a lack of coordination between firms. We show that there...

We study large finite club economies in which agents can belong to several clubs, and care about the characteristics of the other club members. Club memberships must be integer consistent in aggregate. We show that states in the approximate core can approximately be decentralized by prices for...

The paper criticizes the conception of value on behalf of the conventional economic theory, blaming it for the current economic school’s incapacity to explain the actual economic crisis and to offer an adequate perspective to settle a solution. It proposes an explanation based on the tendency...

The article proofs K. J. Arrows introduction of 'communication' in general equilibrium analysis. His theory of 'convergencs of beliefs' is incomplete. Rational choice has to be redesigned by a new relationsship of preferences and semantics, without probability-codes. Using 'communication',...

We study a competitive model in which debt-financed firms may default in some states of nature. Incomplete markets prevent firms from hedging the risk of asset firesales when markets are illiquid. This is the only friction in the model and the only cost of default. The anticipation of such...

Various approaches used in Agent-based Computational Economics (ACE) to model endogenously determined interactions between agents are discussed. This concerns models in which agents not only (learn how to) play some (market or other) game, but also (learn to) decide with whom to do that (or not).

This paper investigates the transmission mechanisms of noise and volatility between economies through trade links, and the effects of synchronization on business cycles. We investigate the transmission of outside noise and the fluctuations that the noise generates. We identify conditions under...

What an entrepreneurial opportunity is and from whence it comes are important issues for understanding how markets function and come into being.In addition to describing the forum held on the topic and summarizing the contributions of the articles that appear in the special issue, this article...

This paper discusses a two-sector neoclassical overlapping generationseconomy with intermediate and final goods in the spirit of Romer(1990). The risk averse agents engage in one of two alternative occupations:either firm-ownership in the intermediate goods sector, characterizedby monopolistic...

This paper investigates the effects of monopolistic competition onentrepreneurial riskRtaking in a general equilibrium model. In thiscontext, occupational choice of risk averse agents is biased towardsfirm ownership. In this case, the inefficiencies due to the presence ofnondiversifiable risk...