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On Domains That Admit Well-Behaved Strategy-Proof Social Choice Functions, Shurojit Chatterji, Rezmi Sanver, Arunava Sen
On Domains That Admit Well-Behaved Strategy-Proof Social Choice Functions, Shurojit Chatterji, Rezmi Sanver, Arunava Sen
Research Collection School Of Economics
In this paper, we investigate domains that admit “well-behaved” strategy-proof social choice functions. We show that if the number of voters is even, then every domain that satisfies a richness condition and admits an anonymous, tops-only, unanimous and strategy-proof social choice function, must be semi-single-peaked. Conversely every semi-single-peaked domain admits an anonymous, tops-only, unanimous and strategy-proof social choice function. Semi-single-peaked domains are generalizations of single-peaked domains on a tree introduced by Demange (1982).