Sequential coalition formation and the core in the presence of externalities

The sequential coalition formation model of Bloch to solve cooperative games with externalities exhibits some anomalies when related to classical concepts [Bloch, F., 1996. Sequential formation of coalitions in games with externalities and fixed payoff division. Games Econ. Behav. 14, 90-123]. We elaborate on these problems, define a modification of Bloch's model and show that its order-independent equilibria coincide with the (pessimistic) recursive core [Kóczy, L.Á., 2007. A recursive core for partition function form games. Theory Dec. 63, 41-51].