Pairwise Partition Graphs and Strategy-proof Social Choice in the Exogenous Indifference Class Model

Pramanik, Anup; Sen, Arunava

Institute of Social and Economic Research Discussion Papers, 2014, 898, 1-23

アクセス数:188件（2025-05-12 01:45 集計）

固定URL: https://hdl.handle.net/11094/27701

論文情報

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タイトル
Pairwise Partition Graphs and Strategy-proof Social Choice in the Exogenous Indifference Class Model
著者
NRID
1000010750672 1000010750672
著者名
Pramanik, Anup
著者名
Sen, Arunava
キーワード等
Social choice functions
Strategy-proofness
Dictatorial Domains
Exogenous Indifference Class
Gibbard- Satterthwaite theorem
抄録
In this paper we consider the exogenous indifference classes model of Barberá and Ehlers (2011) and Sato (2009) and analyze further the relationship between the structure of indifference classes across agents and dictatorship results. The key to our approach is the pairwise partition graph. We provide necessary conditions on these graphs for strategy-proofness and unanimity (or efficiency) to imply dictatorship. These conditions are not sufficient; we also provide separate stronger conditions that are sufficient. A full characterization is obtained in the case of two agents for domains where strategy-proofness and efficiency imply dictatorship.
出版者
The Institute of Social and Economic Research, Osaka University
収録物名
Institute of Social and Economic Research Discussion Papers
巻(号)
898
ページ
1-23
刊行年月
2014-04
言語
英語
ハンドルURL
https://hdl.handle.net/11094/27701
関連情報 (references)
URI
https://www.iser.osaka-u.ac.jp/static/resources/docs/dp/2014/DP0898.pdf
アクセス権
metadata only access
カテゴリ
ディスカッション／ワーキング・ペーパー DP/WP
Institute of Social and Economic Research Discussion Papers