Studia Logica 102 (5):955-980 (2014)

Sven Ove Hansson
Royal Institute of Technology, Stockholm
A descriptor is a set of sentences that are truth-functional combinations of expressions of the form \ , where \ is a metalinguistic belief predicate and p a sentence in the object language in which beliefs are expressed. Descriptor revision ) is an operation of belief change that takes us from a belief set K to a new belief set \ where \ is a descriptor representing the success condition. Previously studied operations of belief change are special cases of descriptor revision, hence sentential revision can be represented as \ , contraction as \ , multiple contraction as \ , replacement as \ , etc. General models of descriptor revision are constructed and axiomatically characterized. The common selection mechanisms of AGM style belief change cannot be used, but they can be replaced by choice functions operating directly on the set of potential outcomes . The restrictions of this construction to sentential revision ) and sentential contraction give rise to operations with plausible properties that are also studied in some some detail
Keywords Belief change  Descriptor revision  Expansion  Monoselective choice function  Outcome set  Pure contraction  Revocation  Semirevision
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DOI 10.1007/s11225-013-9512-5
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References found in this work BETA

A Textbook of Belief Dynamics: Theory Change and Database Updating.Sven Ove Hansson - 1999 - Dordrecht and Boston: Kluwer Academic Publishers.
Theory Contraction Through Base Contraction.André Fuhrmann - 1991 - Journal of Philosophical Logic 20 (2):175 - 203.
Subjunctives, Dispositions and Chances.Isaac Levi - 1977 - Synthese 34 (4):423 - 455.
Preferential Belief Change Using Generalized Epistemic Entrenchment.Hans Rott - 1992 - Journal of Logic, Language and Information 1 (1):45-78.

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Citations of this work BETA

Logic of Belief Revision.Sven Ove Hansson - 2008 - Stanford Encyclopedia of Philosophy.
Iterated Descriptor Revision and the Logic of Ramsey Test Conditionals.Sven Hansson - 2016 - Journal of Philosophical Logic 45 (4):429-450.
A Monoselective Presentation of AGM Revision.Sven Ove Hansson - 2015 - Studia Logica 103 (5):1019-1033.
How to Make Up One's Mind.Li Zhang & Sven Ove Hansson - 2015 - Logic Journal of the IGPL 23 (4):705-717.

View all 11 citations / Add more citations

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