What is "bahmanyar"

Abul-Ḥasan Bahmanyār ibn Marzubān Salari 'Ajamī Aḍarbāyijānī, known as Bahmanyār (died 1067) lived during the Sallarid Dynasty and was a famous pupil of Avicenna. He was of Persian Zoroastrian background, though he later converted to Islam. His knowledge of Arabic was not perfect.

His correspondence with Avicenna and his master's answers to his questions were compiled in the book Mubahathat (dialogues). His main work, the Ketab al-tahasil, which summarises Avicenna's logic, physics and metaphysics was written in Isfahan between 1024 and 1037 and dedicated to his uncle, the Zoroastrian Abu Mansur b. Bahram b. Khurshid b. Yazdyar. Bayhaqi also writes that he wrote a book on logic and one on music and other works are attributed to him.