This paper studies long-term norms concerning actions. In Meyer's Prepositional Deontic Logic (PDeL), only immediate duties can be expressed, however, often one has duties of longer durations such as: "Never do that", or "Do this someday". In this paper, we will investigate how to amend PDeL so that such long-term duties can be expressed. This leads to the interesting and suprising consequence that the long-term prohibition and obligation are not interdefinable in our semantics, while there is a duality between these two notions. As a consequence, we have provided a new analysis of the long-term obligation by introducing a new atomic proposition / (indebtedness) to represent the condition that an agent has some unfulfilled obligation. © Springer-Verlag Berlin Heidelberg 2006.
CITATION STYLE
Hughes, J., & Royakkers, L. (2006). Don’t ever do that! Long-term duties in PDeL. In Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) (Vol. 4048 LNAI, pp. 131–148). Springer Verlag. https://doi.org/10.1007/11786849_12
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