A More General Definition of Equilibrium in Markets with Adverse Selection

Anastasios Dosis 1, 2
1 ESSEC
ESSEC Business School, Economics Department
Abstract : I provide a general definition of equilibrium in markets with adverse selection. An equilibrium is defined as a menu of contracts that makes non-negative aggregate profits such that there exists no other menu that includes it as a subset and makes strictly positive aggregate profits. I show that every efficient menu of contracts is also an equilibrium menu of contracts. Furthermore, I characterise a general sufficient condition under which every equilibrium menu of contracts is efficient, restoring that way the First Fundamental Theorem of Welfare Economics. I provide two possible interpretations for this new definition.
Type de document :
Pré-publication, Document de travail
ESSEC Working paper. Document de Recherche ESSEC / Centre de recherche de l’ESSEC. ISSN : 1291-9616. WP 1607. 2016
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Anastasios Dosis. A More General Definition of Equilibrium in Markets with Adverse Selection. ESSEC Working paper. Document de Recherche ESSEC / Centre de recherche de l’ESSEC. ISSN : 1291-9616. WP 1607. 2016. 〈hal-01285188〉

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