Local global equivalence for unanimous social choice functions

Ujjwal Kumar, Souvik Roy, Arunava Sen, Sonal Yadav and Huaxia Zeng

Games and Economic Behavior, 2021, vol. 130, issue C, 299-308

Abstract: We identify a condition on preference domains that ensures that every locally strategy-proof and unanimous random social choice function is also strategy-proof. Furthermore every unanimous, locally strategy-proof deterministic social choice function is also group strategy-proof. The condition identified is significantly weaker than the characterization condition for local-global equivalence without unanimity in Kumar et al. (2020). The condition is not necessary for equivalence with unanimous random/deterministic social choice functions. However, we show the weaker condition of connectedness remains necessary.

Keywords: Local strategy-proofness; Strategy-proofness; Unanimity (search for similar items in EconPapers)
JEL-codes: D71 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (5)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:gamebe:v:130:y:2021:i:c:p:299-308

DOI: 10.1016/j.geb.2021.08.009

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