WARP and combinatorial choice

• 成果类型: Article
• 署名作者: Alva, Samson
• 署名单位: University of Texas System; University of Texas Austin
• 刊物名称: JOURNAL OF ECONOMIC THEORY
• ISSN/ISSBN: 0022-0531
• DOI: 10.1016/j.jet.2017.11.007
• 发表日期: 2018
• 页码: 320-333
• 关键词: Combinatorial choice; rationalizability; Weak axiom of revealed preference; Irrelevance of rejected contracts; path independence

摘要

For combinatorial choice problems, I show that the Irrelevance of Rejected Items condition is equivalent to the Weak Axiom of Revealed Preference (WARP), and is necessary and sufficient for the existence of a complete, reflexive and antisymmetric rationalization of a combinatorial choice function. I also show the equivalence of WARP to path independence and to other classical choice conditions when the choice domain is combinatorial. (C) 2017 Elsevier Inc. All rights reserved.