Please use this identifier to cite or link to this item: http://hdl.handle.net/10419/165958
Authors: 
Asheim, Geir B.
Voorneveld, Mark
Weibull, Jörgen W.
Year of Publication: 
2016
Series/Report no.: 
Memorandum, Department of Economics, University of Oslo 15/2016
Abstract: 
We define a concept of epistemic robustness in the context of an epistemic model of a finite normal game where a player type corresponds to a belief over the profiles of opponent strategies and types. A Cartesian product X of pure strategy subsets is epistemically robust if there is a Cartesian product Y of player type subsets with X as the associated set of best reply profiles such that the set Yi contains all player types that believe with sufficient probability that the others are of types in Y-i and play best replies. This robustness concept provides epistemic foundations for set-valued generalizations of strict Nash equilibrium, applicable also to games without strict Nash equilibria. We relate our concept to closedness under rational behavior and thus to strategic stability and to the best reply property and thus to rationalizability.
Subjects: 
epistemic game theory
epistemic robustness
rationalizability
closedness under rational behavior
mutual p-belief
JEL: 
C72
D83
Document Type: 
Working Paper

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