Simple Social Choice Rules for Exchange

Ryan Tierney

No 4/2021, Discussion Papers on Economics from University of Southern Denmark, Department of Economics

Abstract: We study the classical problem of trade in two-dimensional Euclidean space. It is known that there is no efficient rule for this model that is compatible with dominant strategy incentives, that is, there is no efficient and strategy-proof rule. We observe that, in addition to incentive constraints, informational constraints are also unavoidable for social planners. Thus, we impose the requirement that finite dimensional messages be sufficient information to realize a rule. In addition, we impose the minimal fairness axioms of anonymity and a weakening of non-bossiness, as well as continuity. The result is a class of rules that is similar to those characterized by Barberà and Jackson ["Strategy-proof exchange", Econometrica, 63 (1995), 51-87].

Keywords: Strategy-proof exchange; communication complexity (search for similar items in EconPapers)
JEL-codes: D44 D47 D51 D83 (search for similar items in EconPapers)
Pages: 30 pages
Date: 2021-03-11
New Economics Papers: this item is included in nep-des and nep-mic
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