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Existence of Share Equilibrium in Symmetric Local Public Good Economies

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Working paper
Author/s: 
Anne Van den Nouweland and Myrna Wooders
Issue number: 
VUECON-16-00008
Series: 
Vanderbilt University Department of Economics Working Papers
Publisher: 
Vanderbilt University
Year: 
2016
Share equilibrium was introduced in van den Nouweland and Wooders (2011) as an extension of ratio equilibrium to local public good economies. In that paper, we took an axiomatic approach to motivate share equilibrium. In the current paper we consider questions related to the existence of share equilibrium and we derive a necessary and suļ¬ƒcient condition for the existence of share equilibrium in symmetric economies. Along the way, we develop a deeper understanding of the possible variation in share equilibrium by considering when symmetric players necessarily have the same share indices in equilibrium.
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