In this paper we prove the existence of an equilibrium theorem and we obtain a condition for uniqueness of equilibrium in infinite dimensional economics using the excess utility function.
Accinelli, E. (2016). Existence and uniqueness of the competitive equilibrium for infinite dimensional economies. Estudios De Economía, 21(2), pp. 313–326. Retrieved from https://sintesisdejurisprudencia.uchile.cl/index.php/EDE/article/view/40802