摘要
Ⅰ. INTRODUCTION One has proposed the solutions for n-person coalition games. J. von Neumann and O. Morgenstern found the stable set of the game in 1944. Gillies gave the definition of the core c(v) of the game in 1955. But up to now, in general, there is no criterion for the existence of a core or a stable set, so Shapley defined
