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  1. The Fixation of Belief and its Undoing: Changing Beliefs Through Inquiry.Isaac Levi - 1991 - New York, NY, USA: Cambridge University Press.
    Isaac Levi's new book is concerned with how one can justify changing one's beliefs. The discussion is deeply informed by the belief-doubt model advocated by C. S. Peirce and John Dewey, of which the book provides a substantial analysis. Professor Levi then addresses the conceptual framework of potential changes available to an inquirer. A structural approach to propositional attitudes is proposed, which rejects the conventional view that a propositional attitude involves a relation between an agent and either a linguistic entity (...)
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  • Some Solved and Unsolved Remainder Equations.Sven Ove Hansson - 1995 - Mathematical Logic Quarterly 41 (3):362-368.
    The remainder set A⟂B of a set of sentences A modulo a set of sentences B is the set of all maximal subsets of A not implying any element of B. A remainder equation is an expression containing remainder sets, such as {A} = B⟂X, in which at least one set is unknown. Solutions to some classes of remainder equations are reported, and some unsolved problems are listed.
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  • A Textbook of Belief Dynamics: Theory Change and Database Updating.Sven Ove Hansson - 1999 - Dordrecht and Boston: Kluwer Academic Publishers.
    SUGGESTED COURSES Introductory level A (Requires very little background in logic .): 4: -9 - - -7 -2 Introductory level B: -9,:+-+ -,2:+,2: -,3:20+-22+ -7 -2 ...
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  • Providing foundations for coherentism.Sven Ove Hansson & Erik J. Olsson - 1999 - Erkenntnis 51 (2-3):243-265.
    We prove that four theses commonly associated with coherentism are incompatible with the representation of a belief state as a logically closed set of sentences. The result is applied to the conventional coherence interpretation of the AGM theory of belief revision, which appears not to be tenable. Our argument also counts against the coherentistic acceptability of a certain form of propositional holism. We argue that the problems arise as an effect of ignoring the distinction between derived and non-derived beliefs, and (...)
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  • Theory contraction and base contraction unified.Sven Ove Hansson - 1993 - Journal of Symbolic Logic 58 (2):602-625.
    One way to construct a contraction operator for a theory (belief set) is to assign to it a base (belief base) and an operator of partial meet contraction for that base. Axiomatic characterizations are given of the theory contractions that are generated in this way by (various types of) partial meet base contractions.
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  • A survey of multiple contractions.André Fuhrmann & Sven Ove Hansson - 1994 - Journal of Logic, Language and Information 3 (1):39-75.
    The AGM theory of belief contraction is extended tomultiple contraction, i.e. to contraction by a set of sentences rather than by a single sentence. There are two major variants: Inpackage contraction all the sentences must be removed from the belief set, whereas inchoice contraction it is sufficient that at least one of them is removed. Constructions of both types of multiple contraction are offered and axiomatically characterized. Neither package nor choice contraction can in general be reduced to contractions by single (...)
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  • On the logic of theory change: Partial meet contraction and revision functions.Carlos E. Alchourrón, Peter Gärdenfors & David Makinson - 1985 - Journal of Symbolic Logic 50 (2):510-530.
    This paper extends earlier work by its authors on formal aspects of the processes of contracting a theory to eliminate a proposition and revising a theory to introduce a proposition. In the course of the earlier work, Gardenfors developed general postulates of a more or less equational nature for such processes, whilst Alchourron and Makinson studied the particular case of contraction functions that are maximal, in the sense of yielding a maximal subset of the theory (or alternatively, of one of (...)
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  • Knowledge in Flux. Modelling the Dymanics of Epistemic States.P. Gärdenfors - 1988 - MIT Press.
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  • Hierarchies of regulations and their logic.Carlos E. Alchourrón & David Makinson - 1981 - In Risto Hilpinen (ed.), New Studies in Deontic Logic: Norms, Actions, and the Foundations of Ethics. Dordrecht, Netherland: Wiley-Blackwell. pp. 125--148.
    Investigates the resolution of contradictions and ambiguous derogations in a code, by means of the imposition of partial orderings.
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