(quasi-) convexity-concavity of functions. The matrix games described by such payoff matrices well approximate continuous …

For cooperative games with transferable utility, convexity has turned out to be an important and widely applicable … concept. Convexity can be defined in a number of ways, each having its own specific attractions. Basically, these definitions … interpretation. For games with nontransferable utility, however, the literature mainly focuses on two kinds of convexity, ordinal and …

) networks. For this we introduce the properties ordinal convexity (concavity) and ordinal strategic complements (substitutes) of …