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Compatibility between stability and strategy-proofness with single-peaked preferences on trees

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  • Pinaki Mandal

Abstract

This paper studies the stability and strategy-proofness aspect of the two-sided one-to-one matching market. Agents have single-peaked preferences on trees. In this setting, we characterize all rich anonymous tree-single-peaked domains where a stable and (weakly group) strategy-proof matching rule exists. We also show that whenever there exists a stable and strategy-proof matching rule on a rich anonymous tree-single-peaked domain, one or both of the deferred acceptance rules (Gale and Shapley, 1962) satisfy stability and weak group strategy-proofness on that domain. Finally, we show that for markets with a size of at least five, there is no rich anonymous domain where a stable and non-bossy matching rule exists. As a corollary, we show incompatibility between stability and group strategy-proofness on rich anonymous tree-single-peaked domains for markets with a size of at least five.

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  • Pinaki Mandal, 2023. "Compatibility between stability and strategy-proofness with single-peaked preferences on trees," Papers 2304.11494, arXiv.org.
    • Handle: RePEc:arx:papers:2304.11494
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    References listed on IDEAS

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    6. Alvin E. Roth, 1982. "The Economics of Matching: Stability and Incentives," Mathematics of Operations Research, INFORMS, vol. 7(4), pages 617-628, November.
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