ABSTRACT
Abstract. The notion of solution plays a crucial role in the conceptual system of Léon Walras, the founder of the General Equilibrium Theory (GET). In this paper, after introducing the two solution concepts employed by Walras in the development of his version of GET, respectively called the “theoretical” and the “practical” solution, we discuss the problems such peculiar conception gives rise to, as well as the attempts Walras makes to dodge them. Then, we explain why and to what extent Pareto, Walras’ immediate successor and co-founder of GET, departs from Walras’ original conception, progressively developing an independent viewpoint on the issue of equilibrium computability in GET.
