Ordinarily, the process of decision making by a committee through voting is mod-elled by a monotonic game the range of whose characteristic function is restricted tof0; 1g: The decision rule that governs the collective action of a voting body induces ahierarchy in the set of players in terms of...

Coleman [1971. Control of collectives and the power of a collectivity to act. In: Lieberman, B. (Ed.), Social Choice. Gordon and Breach, New York, pp. 269ï¾–298] suggested two indices of voting power, power to prevent an action and power to initiate an action. This paper rigorously...