A note on the von Neumann-Morgenstern solution (Q1115820)

The paper deals with the reduced game property for a specific solution concept for cooperative sidepayments games with coalition structures. As a matter of fact, the author proposes a counterexample to \textit{R. J. Aumann} and \textit{J. H. Drèze}'s claim [ibid. 3, 217-237 (1974; Zbl 0313.90074)] that the von Neumann-Morgenstern solution has the reduced game property. The counterexample involved refers to a four-person game with coalition structure \(\{\) (123), (4)\(\}\).