The False Subtlety of the Four Syllogistic Figures

"The False Subtlety of the Four Syllogistic Figures" is a philosophical work by the medieval philosopher and logician Peter of Spain, also known as Petrus Hispanus. This text, written in the 13th century, addresses the rules and structures of syllogism as part of the logic tradition influenced by Aristotle. In the context of syllogistic reasoning, a syllogism is a form of logical reasoning where a conclusion is drawn from two premises.