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Single-peaked Compatible Preference Profiles: Some Combinatorial Results

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Abstract

This paper examines combinatorial problems in connection with single-peaked preference orderings on a unidimensional scale. A binary relation, dominance, is defined on the set of connected orderings. Relevant properties of the corresponding poset and cover graph are discussed. A formula for the number of pairs of connected orderings consistent with spatial single-peakedness is derived. The total number of such pairs is shown to be expressible in a simple form involving binomial probabilities. A possible application is a coalition formation process of the kind examined by Brams et al. (J Theor Polit 14:359–383, 2002), where actors have single-peaked preferences on a common scale.

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Correspondence to Sven Berg.

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Berg, S., Perlinger, T. Single-peaked Compatible Preference Profiles: Some Combinatorial Results. Soc Choice Welfare 27, 89–102 (2006). https://doi.org/10.1007/s00355-006-0115-1

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  • DOI: https://doi.org/10.1007/s00355-006-0115-1

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