KnowraPtolemaic systemLinked fromLinked fromThe 46 pages that link to Ptolemaic system, each with the reason it gives.All 46Broader topic 10Related 11Narrower topic 5Compared with 20Retrograde motionRelated: Its epicycles reproduced the observed backward sections of planetary paths.Al-BiruniRelated: Al-Biruni examined the mathematical astronomy inherited from Ptolemy and his commentators.HypatiaRelated: Hypatia taught astronomy in the tradition associated with Ptolemy’s mathematical works.QuadriviumRelated: It provided a mathematical framework for the quadrivium’s study of planetary motion.Ulugh BegRelated: Its mathematical framework remained influential in the astronomy studied at Samarkand.Lunar theoryRelated: Ptolemy’s lunar model was a major early geometric account of the Moon’s changing motion.Celestial spheresRelated: Ptolemy’s mathematical system described motions that sphere-based cosmologies sought to embody.Theon of AlexandriaRelated: Theon explained astronomical works rooted in this framework.Orbit of the MoonRelated: Its lunar model predicted changing distance imperfectly and implied implausible apparent size changes.Banū Mūsā brothersRelated: The brothers studied and criticized astronomical models inherited from Greek sources.Taqi ad-Din Muhammad ibn Ma'rufRelated: Taqi ad-Din's calculations and tables belonged to traditions that continued to use geocentric models.