Persian mathematician called Abu Nasr al-Farabi. He was the first Muslim to develop a non-Aristotelian logic. Al-Farabi discussed contingencies, and the relation between logic and grammar. He is also credited with categorizing logic into the idea and the proof.
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Kazakhstan, 1 Tenge, 1993 | ||
Kazakhstan, 200 Tenge, 1999 | ||
Kazakhstan, 500 Tenge, 1999 |
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Kazakhstan, 20 Tenge, 1993 |