We present a theory of ethnic conflict in which coalitions formed along ethnic lines competefor the economy’s resources. The role of ethnicity is to enforce coalition membership: inethnically homogeneous societies members of the losing coalition can defect to the winnersat low cost, and this...

The core is reformulated to incorporate the externality typical in strategic formgames. Any coalition of players may deviate by trying to commit to a profile of actionsdifferent from a status quo. The outsiders of the coalition may take a coordinatedmeasure, incentive-feasibly for themselves, to...

In an overlapping generations model, momentary equilibria are defined as points that lieon the intergenerational offer curve, i.e., they satisfy agents’ optimality conditions and marketclearing at any date. However, some dynamic sequences commencing from such points may notbe considered valid...

In a dynamic model of the labor market with moral hazard, equilibriumlayoff is modeled as termination of an optimal long-term contract. Termination,together with compensation (current and future), is used as an incentive deviceto induce worker efforts. I then use the model to study analytically...

In an equilibrium model of the labor market, workers and firms enter intodynamic contracts that can potentially last forever, but are subject to optimalterminations. Upon termination, the firm hires a new worker, and the workerwho is terminated receives a termination contract from the firm and...

This paper provides a new approach to testing cointegration parameters in a singleequationcointegration environment. The novelty is in improving over the well-knownheteroscedasticity and autocorrelation consistent (HAC) robust standard errors usingfixed bandwidth (fixed-b) asymptotic theory and...

We study trade patterns in a pure exchange economy where preferences are symmetric up to taste intensity parameters. In a 2-person, 2-good endowment economy, then all endowments in a particular Edgeworth box rectangle require trading out of that rectangle. Under strictly quasi-concave...

We model the dynamics of asset prices and associated derivatives by considerationof the dynamics of the conditional probability density process for the value of an assetat some specied time in the future. In the case where the asset is driven by Brownianmotion, an associated \master equation"...

We provide a representation for the nonmyopic optimal portfolio of an agentconsuming only at the terminal horizon when the single state variable follows ageneral diusion process and the market consists of one risky asset and a risk-freeasset. The key term of our representation is a new object...

We study the existence of dynamic equilibria with endogenously complete markets incontinuous-time, heterogenous agents economies driven by diusion processes. Ourmain results show that under appropriate conditions on the transition density ofthe state variables, market completeness can be deduced...