We present a logic for Proximity-based Understanding of Conditionals (PUC-Logic) that unifies the Counterfactual and Deontic logics proposed by David Lewis. We also propose a natural deduction system (PUC-ND) associated to this new logic. This inference system is sound, complete, normalizing and decidable.
['Ricardo Queiroz de Araujo Fernandes', 'Edward Hermann Haeusler', 'Luiz Carlos Bresser Pereira']
PUC-Logic