東京大学政策評価研究教育センター

CREPEDP-44

Number CREPEDP-44
Publication Date September 2018
Title Implementation without Expected Utility: Ex-Post Verifiability
Author(s) Hitoshi Matsushima
Abstract This study investigates implementation of a social choice function with complete information, where we impose various restrictions such as boundedness, permission of only small transfers, and uniqueness of iterative dominance in strict terms. We assume that the state is ex-post verifiable after the determination of allocation. We show that with three or more players, any social choice function is uniquely and exactly implementable in iterative dominance. Importantly, this study does not assume either expected utility or quasi-linearity, even if we utilize the stochastic method of mechanism design explored by Abreu and Matsushima (1992, 1994).
Keywords Unique and Exact Implementation, Ex-post Verifiability, Non-Expected Utility, Abreu-Matsushima Mechanism.
Other information Paper in English (13 pages)