A discrete symmetry of a preference relation is a mapping from the domain of choice to itself under which preference comparisons are invariant; a continuous symmetry is a one-parameter family of such transformations that includes the identity; and a symmetry field is a vector field whose...

Bilateral and regional free trade agreements increasingly substitute for the World Trade Organization in trade negotiations. Accordingly, civil society organisations opposed to trade liberalisation target this new generation of trade agreements as well. This paper examines the case of activists...