FEEM working papers "Note di lavoro" series
2019 .012

Matching in the Kolm Triangle: Interiority and Participation Constraints of Matching Equilibria

Authors: Wolfgang Buchholz, Richard Cornes, Dirk Rübbelke
Series: Economic Theory and Applications
Editor: Matteo Manera
Keywords: Public Goods, Matching, Pareto Optimality, Kolm Triangle, Aggregative Games
JEL n.: C78, H41


In this paper we show how the Kolm triangle method, which is a standard tool for visualizing allocations in a public good economy, can also be used to provide a diagrammatical exposition of matching mechanisms and their effects on public good supply and welfare. In particular, we describe, on the one hand, for which income distributions interior matching equilibria result and, on the other hand, for which income distributions the agents voluntarily participate in a matching mechanism. As a novel result, we especially show that the “participation zone” is larger than the “interiority zone”.


Suggested citation: Buchholz, W., R. Cornes, D. Rübbelke (2019), 'Matching in the Kolm Triangle: Interiority and Participation Constraints of Matching Equilibria ', Nota di Lavoro 12.2019, Milano, Italy: Fondazione Eni Enrico Mattei.

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