Theoria 80 (2):116-152 (2014)

Fenrong Liu
Tsinghua University
This article proposes a systematic application of recent developments in the logic of preference to a number of topics in deontic logic. The key junction is the well-known Hansson conditional for dyadic obligations. These conditionals are generalized by pairing them with reasoning about syntactic priority structures. The resulting two-level approach to obligations is tested first against standard scenarios of contrary-to-duty obligations, leading also to a generalization for the Kanger-Anderson reduction of deontic logic. Next, the priority framework is applied to model two intuitively different sorts of deontic dynamics of obligations, based on information changes and on genuine normative events. In this two-level setting, we also offer novel takes on vexed issues such as the Chisholm paradox and modelling strong permission. Finally, the priority framework is shown to provide a unifying setting for the study of operations on norms as such, in particular, adding or deleting individual norms, and even merging whole norm systems in different manners
Keywords dynamic logic  norm change  deontic logic  modal logic  preference logic  contrary‐to‐duty
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DOI 10.1111/theo.12028
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References found in this work BETA

Principia Ethica.George Edward Moore - 1903 - Dover Publications.
Agency and Deontic Logic.John F. Horty - 2001 - Oxford, England: Oxford University Press.
Norm and Action: A Logical Enquiry.Georg Henrik von Wright - 1963 - New York, NY, USA: Routledge and Kegan Paul.
Values and the Heart's Command.Bas C. Van Fraassen - 1973 - Journal of Philosophy 70 (1):5-19.

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Citations of this work BETA

Deontic Logic.Paul McNamara - 2010 - Stanford Encyclopedia of Philosophy.
Obligation as Optimal Goal Satisfaction.Robert Kowalski & Ken Satoh - 2018 - Journal of Philosophical Logic 47 (4):579-609.
Logic of Convex Order.Chenwei Shi & Yang Sun - 2021 - Studia Logica 109 (5):1019-1047.
Priority Merge and Intersection Modalities.Zoé Christoff, Norbert Gratzl & Olivier Roy - 2022 - Review of Symbolic Logic 15 (1):165-196.

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