Barberà, Salvador; Berga, Dolors; Moreno, Bernardo - Barcelona Graduate School of Economics (Barcelona GSE) - 2010
We define different concepts of group strategy-proofness for social choice functions. We discuss the connections … between the defined concepts under different assumptions on their domains of definition. We characterize the social choice … functions that satisfy each one of the mand whose ranges consist of two alternatives, in terms of two types of basic properties. …