Minerals-Supply Security and Mineral-Use Efficiency: Some Observations from the 1970-2005 Interval

Francesco Ruscitti, John Cabot University
Ram Dubey, Montclair State University


Under certain conditions on the excess demand function, it is shown that the set of equilibrium prices coincides with the set of maximizers of a potential function. Therefore, monotone comparative statics techniques can be employed to study how equilibrium prices change when there are shocks to the parameters of the model. As a by-product of our analysis, it turns out that the set of equilibrium prices is a convex lattice.