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(Group) Strategy-proofness and stability in many-to many marching markets

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  • Antonio Romero-Medina
  • Matteo Triossi

Abstract

We study strategy-profness in many-to many matching markets. We prove that when firms have acyclical preferences over workers and both firms and workers have responsive preferences, the worker-optimal stable mechanism is group strategy-proof and Pareto optimal. Absent any assumption on workers’ references, an Adjusted Serial Dictatorship among workers is stable, group strategy-proof and Pareto optimal for workers. In both cases, the set of stable matchings is a singleton. We show that acyclicity is the minimal condition guaranteeing the existence of stable and strategy-proof mechanisms in many-to-many matching markets. Economic Literature Classification Numbers: C71, C78, D71, D78. Key words: Keywords: Many-to-many markets, Acyclicity, Stability, Group Strategy-proofness, singleton core.

Suggested Citation

  • Antonio Romero-Medina & Matteo Triossi, 2017. "(Group) Strategy-proofness and stability in many-to many marching markets," Documentos de Trabajo 332, Centro de Economía Aplicada, Universidad de Chile.
    • Handle: RePEc:edj:ceauch:332
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    keywords: many-to-many markets; acyclicity; stability; group strategy-proofness; singleton core.;
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