The present paper proposes new concepts and a new scenario with which to analyze cooperative interim contracting and re-contracting in an organization.

The issue of the connection between correlated equilibria of Maskin-Tirole (1987) economies and finite markovian stationary sunspot equilibria of overlapping generations economies is reconsidered in this paper.

Each solution concept on a class of normal form games with a given outcome space can be regarded as a social choice correspondence. Here we present a general method of constructing compound solution concepts out of given ones by means of games of pretension.

In this paper we extend an egalitarian solution for two-person games to n-person cooperative games so that the estalished standard is observed for every two agents of the game.