åqvist's Dyadic Deontic Logic E in HOL

We devise a shallow semantical embedding of Åqvist’s dyadic deontic logic E in classical higher-order logic. This embedding is encoded in Isabelle/HOL, which turns this system into a proof assistant for deontic logic reasoning. The experiments with this environment provide evidence that this logic implementation fruitfully enables interactive and automated reasoning at the meta-level and the object-level.

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