Theoretical Economics, Volume 13, Number 2 (May 2018)

Theoretical Economics 13 (2018), 761–794


Stability and strategy-proofness for matching with constraints: a necessary and sufficient condition

Yuichiro Kamada, Fuhito Kojima

Abstract


Distributional constraints are common features in many real matching markets, such as medical residency matching, school admissions, and teacher assignment. We develop a general theory of matching mechanisms under distributional constraints. We identify the necessary and sufficient condition on the constraint structure for the existence of a mechanism that is stable and strategy-proof for the individuals. Our proof exploits a connection between a matching problem under distributional constraints and a matching problem with contracts.

Keywords: Matching with constraints, medical residency matching, school choice, stability, strategy-proofness, matching with contracts, hierarchy

JEL classification: C70, D47, D61, D63

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