The size distributions of many economic variables seem to obey the double power law, that is, the power law holds in both the upper and the lower tails. I explain this emergence of the double power law—which has important economic, econometric, and social implications—using a tractable dynamic stochastic general equilibrium model with heterogeneous agents subject to aggregate and idiosyncratic ...

JEL classification codes: C51 Model construction and estimation C62 Existence and stability conditions of equilibrium D84 Expectations Speculations This paper proposes the Potluck Problem as a model for the behavior of independent producers and consumers under standardeconomicassumptions, as a problemof resourceallocation inamulti-agent system inwhich there is no explicit communication among th...

The paper focuses on regional trade agreements and economic co-operation and develops a new appropriate approach to study their impact on growth and trade. The approach is based on an endogenous trade-growth theory and novelly specified in an economic integration (expenditure) framework which is the conceptual foundation of regional trade agreements. Importantly, it also appropriately takes int...

This paper studies the effects of unemployment policies in a simple static general equilibrium model with adverse selection in the labor market. Firms offer a contract that induces the selfselection of workers. In equilibrium, all unskilled workers are screened out and some skilled workers are rationed out. It is shown that the provision of unemployment insurance (UI) raises involuntary unemplo...

Substitutability and Competition in the Dixit-Stiglitz Model The effects of competition on growth are analyzed in the recent literature by comparing economies with the same market structure but different degrees of substitutability. In this note, we show that in a general equilibrium model with monopolistic competition à la DixitStiglitz the effect of substitutability on the allocation of resou...

Extensive empirical research has shown that in many markets institutional investors have a significant impact on prices and mitigate its adverse effects through their trading strategies. This paper develops a dynamic model of such thin markets, in which the market structure is one of bilateral oligopoly. The paper demonstrates that market thinness qualitatively changes equilibrium properties of...

the aim of this research is to analyse of empirical relationship of fiscal policy and iranian trade account in the years 1338-1385(1959-2006). in and econometrics model the methods of engle and granger (1987), johansen (1988), ardl, pessaran and shin(1998), philips and hansen(1990), have been used to find out the effects of variables such as government expenditures(the component of public deman...

We develop a two-person negotiation model with complete information that makes endogenous both the deadline and the level of surplus destruction after the deadline. We show that the undominated Nash equilibrium outcome is always unique but might be inefficient. Moreover, as the bargaining period becomes short or as the players become very patient, the unique undominated Nash equilibrium outcome...

We study a repeated game with asymmetric information about a dynamic state of nature. In the course of the game, the better informed player can communicate some or all of his information to the other. Our model covers costly and/or bounded communication. We characterize the set of equilibrium payoffs, and contrast these with the communication equilibrium payoffs, which by definition entail no c...

We analyze the Nash equilibria of a standard Bertrand model. We show that in addition to the marginal-cost pricing equilibrium there is a possibility for mixed-strategy equilibria yielding positive profit levels. We characterize these equilibria and find that having unbounded revenues is the necessary and sufficient condition for their existence. Hence, we demonstrate that under realistic assum...