Full Terms & Conditions of access and use can be found at http://www.tandfonline.com/action/journalInformation?journalCode=thpl20 History and Philosophy of Logic ISSN: 0144-5340 (Print) 1464-5149 (Online) Journal homepage: http://www.tandfonline.com/loi/thpl20 Varieties of Demonstration in Alfarabi Riccardo Strobino To cite this article: Riccardo Strobino (2019) Varieties of Demonstration in Alfarabi, History and Philosophy of Logic, 40:1, 42-62, DOI: 10.1080/01445340.2018.1514572 To link to this article: https://doi.org/10.1080/01445340.2018.1514572 Published online: 08 Oct 2018. Submit your article to this journal Article views: 18 View Crossmark data