This paper proposes an equilibrium theory of nominal exchange rates, which offers a new perspective on various issues in open economy macroeconomics. The nominal exchange rate and portfolio choices are jointly determined in equilibrium, thus providing a new approach to overcoming the...

The Fiscal Theory of the Price Level (FTPL) is a promise to obtain price level determinacy even if the nominal interest rate is constant. The idea is that a unique current price level ensures that the present value government budget constraint holds. I establish that this idea hinges on the...

We characterize the preference domains on which the Borda count satisfies Arrow's ``independence of irrelevant alternatives" condition. Under a weak richness condition, these domains are obtained by fixing one preference ordering and including all its cyclic permutations (``Condorcet cycles")....