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Explication of the Letter of Ibn Zaydūn
This codex is a copy of a commentary on a letter by Abū al-Walīd Aḥmad Ibn Zaydūn al-Makhzūmī (1003—70), better known as Ibn Zaydūn, a nobleman and poet who was active in Spain at the time of the fall of the Umayyad Caliphate in 1031. Ibn Zaydūn was caught up in the political turmoil of the day and embroiled in many conflicts and rivalries. The commentary deals with a letter by Ibn Zaydūn concerning his feud with a minister named Ibn ‘Abdūs, which stemmed from the rivalry of ...
Facts on the Calculation of Degrees and Minutes
This manuscript by Badr al-Dīn Muhammad ibn Muhammad ibn Ahmad ibn Muhammad ibn al-Ġazal (1423–1506) contains a commentary on, and abridgement of, the astrological treatise on the calculation of the movement of stars and planets, Kašf al-haqā’iq fī hisāb al-daraj wa-al-daqā’iq (The uncovering of the facts regarding the calculation of degrees and minutes), by the Egyptian astronomer and mathematician Ahmad ibn Rağab ibn al-Mağdī (1366–1447). Ibn al-Mağdī was a disciple of the famous ‘Abdallāh al-Māridīnī (or al-Mārdīnī), who was the grandfather of the author of this ...