Najm al-Dīn 'Alī ibn 'Umar al-Qazwīnī al-Kātibī was a Persian Islamic philosopher and logician of the Shafi`i school. A student of Athīr al-Dīn al-Abharī. His most important works are a treatise on logic, Al-Risala al-Shamsiyya, and one on... Wikipedia