In cooperative games, the coalition structure core is, despite its potential emptiness, one of the most popular …

A set of coalition structures P is farsightedly stable (i) if all possible deviations from any coalition structure p … belonging to P to a coalition structure outside P are deterred by the threat of ending worse off or equally well off, (ii) if … there exists a farsighted improvingpath from any coalition structure outside the set leading to some coalition structure in …