Un'analisi concettuale della sillogistica categorica kantiana

The dissertation is a conceptual analysis of Kant’s categorical syllogistic. Its goal is to evaluate whether Kant could establish a syllogistic logic which includes the traditional syllogistic modes in second and third figure. In light of some recent interpretations of Kant’s logic, the analysis is focused on the deductions which are traditionally proved by means of a proof by contradiction. The first part contains a reconstruction of Kant’s logic’s syntax and semantics; after that, a reconstruction of the debate on the reduction to the first figure of the indirect syllogistic modes takes place, in which are highlighted some theoretical issues which mainly involve the nature on negation and the concept of existence. In the final part of the dissertation some objections are analysed and some methods of proof which regard proof by contradiction in particular are displayed. The main conclusion is that, with some provisos, proof by contradiction can work in Kant’s logic.