A Set-Theoretical Comparison of C2 Social Choice Correspondences

Given the choice sets produced by a pair of Condorcet social choice correspondences, the following interesting questions arise. Does one of these sets always contain the other? If not, do they always intersect or, on the contrary, can they have an empty intersection? Laffond, Laslier, and Le Breton (1995) answer these questions for Condorcet social choice correspondences based exclusively on