History
Aristotle's Reform of Paideia
Article by Evelyn Barker, arguing that the principal aim of Aristotle's Organon was to reform the contemporary paedagogical role of dialectic.
Earliest Uses of Symbols of Set Theory and Logic
Explains the early introduction of notations used in logic and set theory as we know it today. Includes reference links to key people in this area.
Mediaeval Logic and Philosophy
Resource maintained by Paul Vincent Spade at Indiana University.
Medieval Theories of Analogy
Entry in the Stanford Encyclopaedia of Philosophy, by E. Jennifer Ashworth.
Medieval Theories of Modality
Article at the Stanford Encyclopaedia of Philosophy.
On Dialectic
By St. Augustine. Latin original together with translation by J. Marchand.
Peter of Spain (Petrus Hispanus)
Life and work of 13th century logician and author of the Tractatus; from the Stanford Encyclopedia by Joke Spruyt.
Scholastic Logic
Chapter Two of Joseph Perrier's "The Revival of Scholastic Philosophy in the Nineteenth Century" (1909).
Square of Opposition
Article in the Stanford Encyclopaedia of Philosophy, by Terence Parsons.
Syllogistic logic online
This site contains an online program for studying Aristotle's syllogistic logic. The theory of Aristotle's ancient logic is also presented.
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