MATHEMATICIAN

Al-Qalqashandi

1355 - 1418

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Shihāb al-Dīn Abū 'l-Abbās Aḥmad ibn ‘Alī ibn Aḥmad ‘Abd Allāh al-Fazārī al-Shāfiʿī better known by the epithet al-Qalqashandī (Arabic: شهاب الدين أحمد بن علي بن أحمد القلقشندي; 1355 or 1356 – 1418), was a medieval Arab Egyptian encyclopedist, polymath and mathematician. A native of the Nile Delta, he became a Scribe of the Scroll (Katib al-Darj), or clerk of the Mamluk chancery in Cairo, Egypt. His magnum opus is the voluminous administrative encyclopedia Ṣubḥ al-Aʿshá. Read more on Wikipedia

His biography is available in different languages on Wikipedia. Al-Qalqashandi is the 633rd most popular mathematician (down from 552nd in 2019). (down from 2,968th in 2019)

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Among MATHEMATICIANS

Among mathematicians, Al-Qalqashandi ranks 633 out of 1,004. Before him are Willem 's Gravesande, Grete Hermann, Dmitri Egorov, Jakob Hermann, Jean Frédéric Frenet, and Alfréd Haar. After him are Douglas Hartree, Dinostratus, Polyaenus of Lampsacus, François d'Aguilon, Cahit Arf, and Luigi Bianchi.

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Contemporaries

Among people born in 1355, Al-Qalqashandi ranks 13. Before him are Manuel Chrysoloras, Melchior Broederlam, Konrad von Jungingen, Dorothea of Bulgaria, Isabella of Castile, Duchess of York, and Henry the Mild, Duke of Brunswick-Lüneburg. After him are Philippa, 5th Countess of Ulster, and Esau de' Buondelmonti. Among people deceased in 1418, Al-Qalqashandi ranks 5. Before him are Catherine of Lancaster, Mircea I of Wallachia, Ostoja of Bosnia, and Bernard VII, Count of Armagnac.

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