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Which topics in logic did Avicenna investigate?
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Avicenna
The title page of the 1556 edition of Avicenna's The Canon of Medicine (Al-Qanun fi al-Tibb). This edition (sometimes called the 1556 Basel edition) was translated by medieval scholar Gerard of Cremona.
Avicenna, a prominent Persian philosopher and scientist, is regarded as one of the most original and significant logicians in the history of the Arab world. Moving away from the tradition of writing mere commentaries on Aristotle, he produced independent treatises that explored several key areas of logic.12
The specific topics Avicenna investigated include:
- Quantification of predicates: He examined the quantification of the predicates of categorical propositions, such as "Every S is P," "No S is P," "Some S is P," and "Some S is not P".12
- Theory of definition and classification: He developed rigorous approaches to defining and classifying concepts.12
- Temporally modalized syllogisms: He created an original theory of syllogistic logic in which premises are modified by temporal conditions, such as "at all times," "at most times," and "at some time".12
Avicenna viewed logic as an instrumental art and science concerned with second-order concepts, and his work was famously compiled in his encyclopaedic masterpiece, the Kitāb al-shifāʾ (Book of the Cure).34