For a collection of subsets of a finite set N we define its core to be equal to the polyhedral cone {x∈IRN: ∑i∈N xi=0 and ∑i∈Sxi\geq0 for all S∈}. This note describes several applications of this concept in the field of cooperative game theory. Especially collections are considered...

According to Maschler, Peleg and Shapley (1972) the bargaining set of a convex game coincides with its core and the kernel consists of the nucleolus only. In this paper we prove the same properties for [Gamma]-component additive games (= graph restricted games in the sense of Owen (1986)) if...

Nash equilibria for strategic games were characterized by Peleg and Tijs (1996) as those solutions satisfying the properties of consistency, converse consistency and one-person rationality. <p> There are other solutions, like the -Nash equilibria, which enjoy nice properties and appear to be...</p>