Collective Decision Making

Harrie de Swart is a Dutch logician and mathematician with a great and open int- est in applications of logic. Members of the group were, among o- ers, Thom Bezembinder (psychologist), Hans Peters (mathematician), Pieter Ruys (economist), Stef Tijs (mathematician and game theorist) and, of course, Harrie de Swart (logician and mathematician).