Abstract
This paper presents a nonmonotonic deontic logic based on commonsense entailment. It establishes criteria a successful account of obligation should satisfy, and develops a theory that satisfies them. The theory includes two conditional notions of prima facie obligation. One is constitutive; the other is epistemic, and follows nonmonotonically from the constitutive notion. The paper defines unconditional notions of prima facie obligation in terms of the conditional notions.
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Asher, N., Bonevac, D. Prima facie obligation. Stud Logica 57, 19–45 (1996). https://doi.org/10.1007/BF00370668
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DOI: https://doi.org/10.1007/BF00370668