Acording to standard approaches (Sextus, Diogenes, Galeno, B.Mates, Long y Sedley, Bochenski, Lukasiewicz), the Stoic logic is actually a deduction system, a propositional system of logic in today perspective. The work of Chrysippus about the five indemonstrable arguments is the principal basis of this system. In this paper I examine the nature of indemonstrable arguments, the Antipater`s theorem and the basic schemas of inference, or zemas. On the other hand, in particular I hold that the indemonstrable arguments have another important role for philosophy and history of logic; this role is the justification of deduction, a central problem at present. I analize, first, the indemonstrable and conditional justification of deduction and second, the cognitive justification of logic implied in stoic system.
Ramírez Figueroa, A. (2018). Chrysippus of Soli and the Indemonstrables. Revista De Filosofía, 74, pp. 193–214. Retrieved from https://revistafilosofia.uchile.cl/index.php/RDF/article/view/51893
