Axiomatic Equilibrium Selection: The Case of Generic Extensive Form Games

Fuente: arXiv
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Main Authors: Govindan, Srihari, Wilson, Robert B.
Format: Preprint
Published: 2025
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author Govindan, Srihari
Wilson, Robert B.
author_facet Govindan, Srihari
Wilson, Robert B.
contents A solution concept that is a refinement of Nash equilibria selects for each finite game a nonempty collection of closed and connected subsets of Nash equilibria as solutions. We impose three axioms for such solution concepts. The axiom of backward induction requires each solution to contain a quasi-perfect equilibrium. Two invariance axioms posit that solutions of a game are the same as those of a game obtained by the addition of strategically irrelevant strategies and players. Stability satisfies these axioms; and any solution concept that satisfies them must, for generic extensive-form games, select from among its stable outcomes. A strengthening of the two invariance axioms provides an analogous axiomatization of components of equilibria with a nonzero index.
format Preprint
id arxiv_https___arxiv_org_abs_2504_16908
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Axiomatic Equilibrium Selection: The Case of Generic Extensive Form Games
Govindan, Srihari
Wilson, Robert B.
Theoretical Economics
A solution concept that is a refinement of Nash equilibria selects for each finite game a nonempty collection of closed and connected subsets of Nash equilibria as solutions. We impose three axioms for such solution concepts. The axiom of backward induction requires each solution to contain a quasi-perfect equilibrium. Two invariance axioms posit that solutions of a game are the same as those of a game obtained by the addition of strategically irrelevant strategies and players. Stability satisfies these axioms; and any solution concept that satisfies them must, for generic extensive-form games, select from among its stable outcomes. A strengthening of the two invariance axioms provides an analogous axiomatization of components of equilibria with a nonzero index.
title Axiomatic Equilibrium Selection: The Case of Generic Extensive Form Games
topic Theoretical Economics
url https://arxiv.org/abs/2504.16908