The single-peaked domain revisited: A simple global characterization
Clemens Puppe ()
Journal of Economic Theory, 2018, vol. 176, issue C, 55-80
It is proved that, among all restricted preference domains that guarantee consistency (i.e. transitivity) of pairwise majority voting, the single-peaked domain is the only minimally rich and connected domain that contains two completely reversed strict preference orders. It is argued that this result explains the predominant role of single-peakedness as a domain restriction in models of political economy and elsewhere. The main result has a number of corollaries, among them a dual characterization of the single-dipped domain; it also implies that a single-crossing (‘order-restricted’) domain can be minimally rich only if it is a subdomain of a single-peaked domain. The conclusions are robust as the results apply both to domains of strict and of weak preference orders, respectively.
Keywords: Social choice; Restricted domains; Condorcet domains; Single-peakedness; Majority voting; Single-crossing property (search for similar items in EconPapers)
JEL-codes: D71 C72 (search for similar items in EconPapers)
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Working Paper: The Single-Peaked Domain Revisited: A Simple Global Characterization (2017)
Working Paper: The single-peaked domain revisited: A simple global characterization (2016)
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Persistent link: https://EconPapers.repec.org/RePEc:eee:jetheo:v:176:y:2018:i:c:p:55-80
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