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Anglberger, Albert J. J.; Gratzl, Norbert; Roy, Olivier (28. July 2015): Obligation, Free Choice, And The Logic Of Weakest Permissions. In: The Review of Symbolic Logic, Vol. 8, No. 4: pp. 807-827
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Abstract

We introduce a new understanding of deontic modals that we call obligations as weakest permissions. We argue for its philosophical plausibility, study its expressive power in neighborhood models, provide a complete Hilbert-style axiom system for it and show that it can be extended and applied to practical norms in decision and game theory.