Demonstrations and dialectical arguments are both forms of valid argument, for Aristotle. However, he also studies what he calls contentious (eristikos) or sophistical arguments: these he defines as arguments which […]
Aristotle often contrasts dialectical arguments with demonstrations. The difference, he tells us, is in the character of their premises, not in their logical structure: – whether an argument is a […]
Induction and Deduction Deductions are one of two species of argument recognized by Aristotle. The other species is induction (epagôgê). He has far less to say about this than deduction, […]
A syllogism (Greek: συλλογισμός – syllogismos – “conclusion,” “inference”) is a kind of logical argument in which one proposition (the conclusion) is inferred from two or more others (the premises) […]
Aristotelian Syllogisms after Raymond McCall, Basic Logic (Barnes & Noble, 1967); symbolic apparatus from Elementary Logic, by Benson Mates (Oxford, 1972) Copyright (c) 1998, 1999, 2002 Kelley L. Ross, Ph.D. […]
Aristotle’s Syllogistic Copyright © 2007, S. Marc Cohen via: http://faculty.washington.edu/smcohen/433/Syllogistic.pdf Aristotle’s Syllogistic – Propositions Propositions consist of two terms (a subject and a predicate) and an indicator of quantity/quality: ‘every’, […]
Συμπερασμού, κανόνες. Κανόνες για την κατασκευή έγκυρων επιχειρημάτων, που μας οδηγούν στη συναγωγή συμπερασμάτων από κάποιες προκείμενες προτάσεις με καθορισμένη δομή.