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Localized perfection

delete2026-06-01
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PRE
AI
E
Enxian Chen *
Q
Qiao, Lei *
X
Xiang Sun *
S
Sun, Yeneng *
DOI:10.1016/j.jet.2026.106183delete
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Abstract

Abstract

En 中文
Perfect equilibrium and its refinements are widely studied and typically rely on full-support perturbations. We introduce a S-localized notion of perfection for games with a continuum of players. It confines perturbations within a S-neighborhood of the underlying action distribution and eliminates undesirable equilibria from a local perspective. We establish the existence of a pure strategy S-localized perfect equilibrium and show that it is equivalent to S-admissible Nash equilibrium. We also study limit versions of S-localized perfection. Illustrative applications to large routing games and crowd saturation games are presented.
Keywords:
Large games
Nash equilibrium
delta-localized perfect equilibrium
delta-admissible nash equilibrium
Limit localized perfection

Journal

J
Journal of Economic Theory
IF:
1.2
Papers:
68
Citations:
0

Organization

S
shanghai university of finance & economics
Scholars:
228
Papers: 153
Citations: 0
N
National University of Singapore
Scholars:
7.6W
Papers: 6.5W
Citations: 11.4W
N
nankai university
Scholars:
4.8W
Papers: 3.3W
Citations: 74
W
wuhan university
Scholars:
8.1W
Papers: 5.8W
Citations: 70
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Cited Papers

Cited Papers

Informational Size and Incentive Compatibility
err2002-11-01
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PREAI
errRichard McLean; Andrew Postlewaite
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EQUILIBRIUM REFINEMENT FOR INFINITE NORMAL-FORM GAMES
err1995-11-01
err54
PREAI
errSIMON, LK; STINCHCOMBE, MB
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Robust perfect equilibrium in large games
err2022-04-01
err0
PREAI
errChen,Enxian; Qiao,Lei; Sun,Xiang; Sun,Yeneng
errShare
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researcher View more