Parity and Non-Parity Determinants of Exchange Rates in Latin American Economies

Unemployment and Real Exchange Rate Dynamics in Latin American Economies

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Purchasing power parity and real effective exchange rates

This study re-examines the validity of Purchasing Power Parity (PPP) by focusing on the real effective exchange rates (REERs) for the post-Bretton Woods period, using newly developed unit root tests that account for both nonlinearity and smooth temporary multiple breaks in the data. The tests are applied to the REERs of 23 developed countries and are able to reject the null hypothesis of a unit...

Calibrating measurement uncertainty in purchasing power parity exchange rates

On Parity Vectors of Latin Squares

The parity vectors of two Latin squares of the same side n provide a necessary condition for the two squares to be biembeddable in an orientable surface. We investigate constraints on the parity vector of a Latin square resulting from structural properties of the square, and show how the parity vector of a direct product may be obtained from the parity vectors of the constituent factors. Parity...

Permutations, the Parity Theorem, and Determinants

The Parity Theorem says that whenever an even (resp. odd) permutation is expressed as a composition of transpositions, the number of transpositions must be even (resp. odd). The purpose of this article is to give a simple definition of when a permutation is even or odd, and develop just enough background to prove the parity theorem. Several examples are included to illustrate the use of the not...