Formalism in Economics: Perspectives from Philosophy of Mathematics

Abstract This paper engages with recent work on formalization in economics to develop a new perspective on mathematization. Boylan and O’Gorman draw on foundations of mathematics to argue that classical mathematics is inappropriate for economics; intuitionistic foundations and constructive mathematics should be used instead. The use of real analysis would be blocked and equilibrium results undermined. I argue that their line of thought faces several challenges; however, I then draw on their analyses and the philosophy of applied mathematics to propose a novel approach in which questions about mathematization are properly understood as questions about the contextual aptness of relevant idealizations.