Martínez-de-Albéniz, F. Javier; Núñez, Marina; … - In: Games and Economic Behavior 73 (2011) 2, pp. 553-563
prove that the set of matrices leading to the same core form a join-semilattice with a finite number of minimal elements and … a unique maximum. We provide a characterization of the minimal elements. A sufficient condition under which the join-semilattice …