セリザワ　シゲヒロ   SERIZAWA Shigehiro
  芹澤　成弘
   所属   大阪経済大学  経済学部 経済学科
   職種   教授
言語種別 英語
発行・発表の年月 2025/06/30
形態種別 学術雑誌
査読 査読あり
標題 "Efficient and strategy-proof multi-unit object allocation problems with money: decreasing incremental valuations with income effects"
執筆形態 共著
掲載誌名 Economic Theory
掲載区分国外
出版社・発行元 Springer Berlin Heidelberg
巻・号・頁 pp.1-42
総ページ数 42
著者・共著者 Hiroki Shinozaki, Tomoya Kazumura, Shigehiro Serizawa
概要 We consider the problem of allocating multiple units of an object and collecting payments. Each agent can receive multiple units, and his (consumption) bundle is a pair consisting of his quantity of the object and his payment. An agent’s preference over bundles is not necessarily quasi-linear. A class of preferences is called a domain. We show that if a sufficiently rich domain includes at least one preference exhibiting decreasing incremental valuations and either positive or negative income effects, then no rule satisfies efficiency, individual rationality, no subsidy for losers, and strategy-proofness. Our result demonstrates the necessity of certain assumptions for the existence of a rule satisfying the four properties in various environments-for instance, the quasi-linearity assumption is necessary for the classical existence result under quasi-linear preferences with non-increasing incremental valuations (Vickrey 1961).