Ahmad bin Rajab bin Taibugha al-Majdī al-ala’i bin Abdullah Shihāb al‐Dīn Abu al-Abbas (Arabic: أحمد بن رجب بن طيبغا المجدي العلائي بن عبد الله شهاب الدين أبو العباس; 1359–1447 CE) was an Egyptian mathematician and astronomer. His most important mathematical work was "Book of Substance", a voluminous commentary on the Summary of the Operations of Calculations by Ibn al-Banna'.
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This article is an automated import of the Wikipedia article "Ibn al-Majdi", available at https://en.wikipedia.org/wiki/Ibn_al-Majdi . Text is licensed under CC BY-SA 4.0.