We propose an oligopoly game where quantity setting firms have incomplete information about the demand function. At each time step they solve a profit maximization problem assuming a linear demand function and ignoring the effects of the competitors’ outputs. Despite such a rough approximation, that we call “Local Monopolistic Approximation” (LMA), the repeated game may converge at a Nash equil...

A topology is efficient for network games if, for any game over it, every Nash equilibrium is socially optimal. It is well known that many topologies are not efficient for network games. We characterize efficient topologies in network games with a finite set of players, each wishing to transmit an atomic unit of unsplittable flow. We distinguish between two classes of atomic network routing gam...

In this paper we study the existence of bubbles for pricing equilibria in a pure exchange economy à la Lucas, with infinitely lived homogeneous agents. The model is analyzed under fairly general assumptions: no restrictions either on the stochastic process governing dividends’distribution or on the utilities (possibly unbounded) are required. We prove that the pricing equilibrium is unique as l...

We introduce endogenous probability of survival in the standard Keynes-Ramsey optimal growth model. An individual’s probability of survival is assumed to be dependent on past levels of consumption. Endogenous probability of survival effectively also implies that the rate of time preference (or degree of patience) of an individual is no longer an exogenously given parameter. We solve the dynamic...

A people’s culture, norms and habits are important determinants not just of the quality of social life but of economic progress and growth. In this paper we take the view that while the importance of culture is undeniable, the innateness of culture is not. We work here with a single example and demonstrate how a human trait which is widely believed to be cultural is at the same time a matter of...

This paper analyzes the role of financial development as a source of endogenous instability in small open economies. By assuming that firms face credit constraints, our model displays a complex dynamic behavior for intermediate values of the parameter representing the level of financial development of the economy. The basic implication of our model is that economies experiencing a process of fi...

Existence and efficiency of general equilibrium with commodity money is investigated in an economy where N commodities are traded at N(N − 1)/2 commodity-pairwise trading posts. Trade is a resource-using activity recovering transaction costs through the spread between bid (wholesale) and ask (retail) prices. Budget constraints, enforced at each trading post separately, imply demand for a carrie...

Strategy-proof implementation is one of the many elements that have contributed to the successful application of matching theory in real life. However, in many-to-one matching markets without transfers (e.g., doctors to hospitals with fixed salaries) there is no stable mechanism which is strategy-proof for hospitals. Furthermore, strategy-proofness and stability cannot be achieved for both hosp...

This paper presents a survey of the use of homotopy methods in game theory. Homotopies allow for a robust computation of game-theoretic equilibria and their refinements. Homotopies are also suitable to compute equilibria that are selected by various selection theories. We present the relevant techniques underlying homotopy algorithms. We give detailed expositions of the Lemke-Howson algorithm a...