This paper addresses partly an open question raised in the Handbook of Mathematical Economics about the orientability of the pseudo-equilibrium manifold in the basic two-period General Equilibrium with Incomplete Markets (GEI) model. For a broad class of explicit asset structures, it is proved...

In this article, we extend Brouwer's fixed point theorem – which states that every continuous mapping f :B→B (a closed ball of Rn ) must have a fixed point – by allowing discontinuities of f, and we apply this extension to equilibrium theory in Economics.

This paper studies the existence of equilibrium solution concepts in a large class of economic models with discontinuous payoff functions. The issue is well understood for Nash equilibria, thanks to Reny's better-reply security condition ( Reny 1999) and its recent improvements (Barelli and...