Ibn Muʿādh al-Jayyānī (989–1079)

Born 989 CE, died 1079 CE.

Abū ʿAbd Allāh Muḥammad ibn Muʿādh al-Jayyānī (Arabic: أبو عبد الله محمد بن معاذ الجياني; 989, Cordova, Al-Andalus – 1079, Jaén, Al-Andalus) was an Arab mathematician, Islamic scholar, and Qadi from Al-Andalus (in present-day Spain). Al-Jayyānī wrote important commentaries on Euclid's Elements and he wrote the first known treatise on spherical trigonometry.

Text from the Wikipedia article Ibn_Mu'adh_al-Jayyani, licensed CC BY-SA 4.0.

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Ibn Muʿādh al-Jayyānī (989–1079)

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