Ibn Mu'adh al-Jayyani (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Ibn Mu'adh al-Jayyani" in English language version.

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Smith, A. Mark (1992). "The Latin Version of lbn Mu c ādh's Treatise "On Twilight and the Rising of Clouds"". Arabic Sciences and Philosophy. 2 (1): 83. doi:10.1017/s0957423900001570.
Sabra, A.I. (1967). "The Authorship of the Liber de crepusculis, an Eleventh-Century Work on Atmospheric Refraction". Isis. 58 (1): 77–85. doi:10.1086/350185.

Calvo 2007. Calvo, Emilia (2007). "Ibn Muʿādh: Abū ʿAbd Allāh Muḥammad ibn Muʿādh al-Jayyānī". In Thomas Hockey; et al. (eds.). The Biographical Encyclopedia of Astronomers. New York: Springer. pp. 562–3. ISBN 978-0-387-31022-0. (PDF version)

O'Connor, John J.; Robertson, Edmund F., "Abu Abd Allah Muhammad ibn Muadh Al-Jayyani", MacTutor History of Mathematics Archive, University of St Andrews, al-Jayyani's The book of unknown arcs of a sphere, the first treatise on spherical trigonometry. The work, which is published together with a Spanish translation and a commentary in [3], contains formulae for right-handed triangles, the general law of sines, and the solution of a spherical triangle by means of the polar triangle. Proofs are sometimes only given as sketches.
O'Connor, John J.; Robertson, Edmund F., "Menelaus of Alexandria", MacTutor History of Mathematics Archive, University of St Andrews "Book 3 deals with spherical trigonometry and includes Menelaus's theorem."