Jan van Daal received a Ph.D. from Erasmus University in Rotterdam. He has researched and taught in the areas of mathematical economics and published on demand systems, aggregation problems, and the theory and history of general economic equilibrium. Dr van Daal specializes in research on the life and works of Leon Walras and has published, among other writings, The Equilibrium Economics of Leon Walras (with Albert Jolink, 1993), the translation of Walras' Etudes d'economie appliquee (2005), and the translation of Walras' Etudes d'economie sociale (with Donald Walker, 2010).