This book deals with the analysis of some formal problems involving operators in Euclidean spaces and their applications to economic modelling. It contains a set of new results on the solvability of complementarity problems and variational inequalities, and a number of applications to...

This monograph provides a formal and systematic exposition of the main results on the existence and optimality of equilibria in economies with increasing returns to scale. For that, a general equilibrium model is carefully constructed first by means of a precise formalization of consumers and...