TY - JOUR ID - 62335 TI - Propositional Logic in Al-Farabi and Avicenna JO - Philosophy and Kalam JA - JITP LA - en SN - 2008-9422 AU - Shahverdi, Amin AD - Y1 - 2017 PY - 2017 VL - 50 IS - 1 SP - 79 EP - 101 KW - Avicenna KW - al-Farabi KW - The Criterion of Propositionality KW - Principle of Substitution KW - Propositional Logic DO - 10.22059/jitp.2017.62335 N2 - The first chapter of the paper discusses the concept of “Propositionality” attributed to logical arguments, and by adopting the criterion introduced by Christopher Martin, the “Propositionality” of logical arguments is elaborated based on the Principle of Substitution in compound propositions. The second chapter discusses the viewpoints of Kamran Karimullah on the “non-Propositionality” of Al-Farabi’s conditional arguments and “Propositionality” of Avicenna to reach a judgment. In this approach, the “non-Propositionality” of Al-Farabi’s logical teaching is confirmed not only in its dialectical context, but is also confirmed beyond it. The chapter continues by showing that Avicenna’s viewpoints on the conditional arguments and propositions maintain differs somehow from modern “propositional logic” despite satisfying the criterion of propositionality.   UR - https://jitp.ut.ac.ir/article_62335.html L1 - https://jitp.ut.ac.ir/article_62335_a2ec5e866234189b08bca4c5016fd593.pdf ER -