Before revision: We establish several structural results for the set of competitive equilibria in bilateral trading networks with transfers in the case of imperfectly transferable utility and frictions : The lattice theorem, the rural hospitals theorem, the existence of side-optimal equilibria, compactness of the set of equilibria and a group-incentive-compatibility result hold without the assumption of quasi-linear utility in transfers .
After revision: We establish several structural results for the set of competitive equilibria in bilateral trading networks with transfers in the case of imperfectly transferable utility and frictions : The lattice theorem, the rural hospitals theorem, the existence of side-optimal equilibria, compactness of the set of equilibria and a group-incentive-compatibility result hold with imperfectly transferable utility and in the presence of frictions .