An input-output model with non-constant returns to scale and externalities is presented, and it is shown that in this model the non-substitution theorem is still valid. More precisely, the quantity side of the theorem, i.e. the proposition on efficiency, remains valid, while there can be no...

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...

This book deals with the analysis of production economies in which firms may exhibit increasing returns to scale, or other forms of non-convexities. The study focuses on the existence and efficiency of equilibrium allocations, and the comparison with the standard competitive equilibrium model. A...