Small one-dimensional Euclidean preference profiles

Jiehua Chen () and Sven Grottke ()
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Jiehua Chen: TU Wien
Sven Grottke: TU Berlin

Social Choice and Welfare, 2021, vol. 57, issue 1, No 7, 117-144

Abstract: Abstract We characterize one-dimensional Euclidean preference profiles with a small number of alternatives and voters. We show that every single-peaked preference profile with two voters is one-dimensional Euclidean, and that every preference profile with up to five alternatives is one-dimensional Euclidean if and only if it is both single-peaked and single-crossing. By the work of Chen et al. (Social Choice and Welfare 48(2):409–432, 2017), we thus obtain that the smallest single-peaked and single-crossing preference profiles that are not one-dimensional Euclidean consist of three voters and six alternatives.

Date: 2021
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DOI: 10.1007/s00355-020-01301-y

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