ʿABD-AL-QĀDER ḤASAN RŪYĀNĪ, 10th/16th century astronomer. Apparently from Ṭabarestān, he seems to have served the rulers of Gīlān; he dedicated his Zīǰ-e molaḵḵaṣ-e Mīrzāʾī (“Compendious astronomical tables for Mīrzā,” composed in 891/1486) to Sultan Mīrzā ʿAlī (1478-1505) and his al-Toḥfat al-neẓāmīya (“The Neẓām’s gift”) to Sultan Yaḥyā Kīā. In the latter work, the first thirty sections (faṣl) out of a total of forty are a commentary of Naṣīr-al-dīn Ṭūsī’s Sī faṣl. ʿAbd-al-Qāder also wrote a Moḵtaṣar dar maʿrefat-e taqvīm (“Epitome of knowledge of the calendar”) and a Resālat al-kora (“Epistle on the sphere”).

Bibliography : Storey, II/1, no. 114, p. 78.