Alternative Semantics for Unawareness

Joseph Halpern ()

Game Theory and Information from University Library of Munich, Germany

Abstract: Modica and Rustichini [Theory and Decision 37, 1994] provided a logic for reasoning about knowledge where agents may be unaware of certain propositions. However, their original approach had the unpleasant property that nontrivial unawareness was incompatible with partitional information structures. More recently, Modica and Rustichini [Games and Economic Behavior 27:2, 1999] have provided an approach that allows for nontrivial unawareness in partitional information structures. Here it is shown that their approach can be viewed as a special case of a general approach to unawareness considered by Fagin and Halpern [Artificial Intelligence 34, 1988].

Keywords: awareness; unawareness (search for similar items in EconPapers)
JEL-codes: C70 C80 (search for similar items in EconPapers)
Pages: 19 pages
Date: 2000-11-22
Note: Type of Document - PDF; prepared on Unix; pages: 19; figures: included. To appear, Games and Economic Behavior 37. 1994].
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Journal Article: Alternative Semantics for Unawareness (2001)
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