We give necessary and sufficient conditions for the existence of symmetric equilibrium without ties in common values auctions, with multidimensional independent types and no monotonic assumptions. When the conditions are not satisfied, we are still able to prove the existence of pure strategy...

It is known that, in the context of a real business cycle model with constant returns to scale and a balanced budget fiscal policy rule, steady state indeterminacy may arise as a result of endogenously determined labor income tax rates. This happens for a range of empirically plausible tax rates...

It is known that, in the context of a real business cycle model with constant returns to scale and a balanced budget fiscal policy rule, steady state indeterminacy may arise as a result of endogenously determined labor income tax rates. This happens for a range of empirically plausible tax rates...

This paper analyzes a stochastic model of evolution in normal form games. The long-run behavior of individuals in this model is investigated in the limit where mutation rates tend to zero, while the expected number of mutations, and hence population sizes, tend to infinity. It is shown that...

This paper studies a competitive market model for trading indivisible commodities. Commodities can be desirable or undesirable. Agents' preferences depend on the bundle of commodities and the quantity of money they hold. We assume that agents have quasi-linear utilities in money. Using the...

This paper explores the link between an environmental policy and economic growth employing an extension of the Neoclassical Growth Model. We include a state equation to renewable natural resources, and consider natural resources as a component of the aggregate productivity. It is assumed that...

In spite of fiat money is useless in a standard Arrow-Debreu model, in this paper we will show that this does not hold true anymore when goods are indivisible. In our setting, although fiat money yields no utility, its price will always be positive and the set of equilibrium allocations changes...

Inflation volatility has significantly declined over the last 20 years in the U.S. To find out why, I follow a structural approach. I estimate a complete New Keynesian model which imposes cross-equation restrictions on the time series of inflation, the output gap and the interest rate. I perform...

Unexpected variation in emissions can have an enormous impact on the prices of emission permits and the efficiency achieved in tradable permit markets. Shocks to emission levels can be correlated across firms; for example, most firms require more emission permits than planned for following a...

This paper studies oligopolistic firms’ exploitation of a renewable natural resource in a differential game. It is well known that finding Markov perfect equilibrium in differential games is extremely difficult except for games that are linear-quadratic. In this paper, we develop a...