| Abstract: | Two logics L1 and L2 are negatively equivalent if for any set of formulas X and any negated formula ¬ , ¬ can be deduced from the set of hypotheses X in L1 if and only if it can be done in L2. This article is devoted to the investigation of negative equivalence relation in the class of extensions of minimal logic.The author acknowledges support by the Alexander von Humboldt-StiftungPresented by Jacek Malinowski |
