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Abu Ali al-Hassan al-Marrakushi (fl. 1281/2) was a Moroccan astronomer and mathematician. He was especially important in the field of trigonometry. He described more than 240 stars. He is the author of a very large compendium on spherical astronomy and astronomical instruments (sundials, astrolabes) entitled ''ami’ al-mabadi' wa'l-ghayat''. He wrote this treatise in Cairo. It was translated into French by J. J. Sedillot in 1834. He also the author of ''Kitab al-Kotua al-Makhrutia'' (conic sections).〔Halima El Ghrari, ''Architects of the Scientific Thought in Islamic Civilization, 35 Al.Hasan al-Murakchi'', ISESCO, 2003, p.98 () (retrieved 31 January 2011)〕 ==References== *Al-Hasan ibn 'Alî al-Marrâkushî: ''Jâmi' al-mabâdi' wa 'l-ghâyât fî 'ilm al-mîqât '' (Comprehensive Collection of Principles and Objectives in the Science of Timekeeping), 1984, set of 2 vols., ISBN 3-8298-0201-3 (facsimile edition) *Sédillot, L. P.E. A., ''Mémoire sur les Instruments Astronomiques des Arabes composé au 13e siècle par Aboul Hassan Ali de Maroc'', published with an introduction by L.P.E.A. Sédollot, 2 vols. Imp. Royale, Paris, 1834–5 *Heinrich Suter, ''Die Mathematiker und Astronomen der Araber und ihre Werke'' (1900)., p. 144–5 (n. 363) *Mayer, Leo Ary, ''Islamic astrolabists and their works'', Geneve, A. Kundig: 1956., p. 46 (see Al-Hasan ibn Ali) 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Abu Ali al-Hasan al-Marrakushi」の詳細全文を読む スポンサード リンク
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