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- W4255356823 abstract "The extensive form of a game is informationally richer than the normal form since players gather information that allows them to update their subjective priors as the game progresses. For this reason, the study of rationalizability in extensive form games is more complex than the corresponding study in normal form games. There are two ways to use the added information to eliminate strategies that would not be chosen by a rational agent: backward induction and forward induction. The latter is relatively exotic (although more defensible). Backward induction, by far the most popular technique, employs the iterated elimination of weakly dominated strategies, arriving at the subgame perfect Nash equilibria—the equilibria that remain Nash equilibria in all subgames. An extensive form game is considered generic if it has a unique subgame perfect Nash equilibrium. This chapter develops the tools of modal logic and presents Robert Aumann's famous proof that common knowledge of rationality (CKR) implies backward induction. It concludes that Aumann is perfectly correct, and the real culprit is CKR itself. CKR is in fact self-contradictory when applied to extensive form games." @default.
- W4255356823 created "2022-05-12" @default.
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- W4255356823 date "2014-04-20" @default.
- W4255356823 modified "2023-09-25" @default.
- W4255356823 title "Extensive Form Rationalizability" @default.
- W4255356823 doi "https://doi.org/10.23943/princeton/9780691160849.003.0005" @default.
- W4255356823 hasPublicationYear "2014" @default.
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