
On Sustainable Equilibria
Govindan, Srihari; Laraki, Rida; Pahl, Lucas (2020), On Sustainable Equilibria, EC '20: Proceedings of the 21st ACM Conference on Economics and Computation, ACM - Association for Computing Machinery : New York, NY, p. 767–768. 10.1145/3391403.3399514
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Type
Communication / ConférenceDate
2020Conference title
EC '20: Proceedings of the 21st ACM Conference on Economics and ComputationConference date
2020-07Conference city
Virtual EventConference country
HungaryBook title
EC '20: Proceedings of the 21st ACM Conference on Economics and ComputationPublisher
ACM - Association for Computing Machinery
Published in
New York, NY
ISBN
978-1-4503-7975-5
Pages
767–768
Publication identifier
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Show full item recordAuthor(s)
Govindan, SrihariLaraki, Rida

Laboratoire d'analyse et modélisation de systèmes pour l'aide à la décision [LAMSADE]
Pahl, Lucas
Abstract (EN)
Following the ideas laid out in Myerson (1996), Hofbauer (2000) defined an equilibrium of a game as sustainable if it can be made the unique equilibrium of a game obtained by deleting a subset of the strategies that are inferior replies to it, and then adding others. Hofbauer also formalized Myerson's conjecture about the relationship between the sustainability of an equilibrium and its index: for a generic class of games, an equilibrium is sustainable iff its index is +1. Von Schemde and von Stengel (2008) proved this conjecture for bimatrix games. This paper shows that the conjecture is true for all finite games. More precisely, we prove that an isolated equilibrium of a given game has index +1 if and only if it can be made unique in a larger game obtained by adding finitely many inferior reply strategies.Subjects / Keywords
Sustainable EquilibriaRelated items
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