Shihāb al‐Dīn ibn al‐Majdī ( ar, شهاب الدين بن المجدي; 1359–1447 CE) was an Egyptian

mathematician A mathematician is someone who uses an extensive knowledge of mathematics in their work, typically to solve mathematical problems. Mathematicians are concerned with numbers, data, quantity, structure, space, models, and change. History On ...

and

astronomer An astronomer is a scientist in the field of astronomy who focuses their studies on a specific question or field outside the scope of Earth. They observe astronomical objects such as stars, planets, moons, comets and galaxies – in either ...

. 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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{{DEFAULTSORT:Ibn al-Majdi 15th-century astronomers Medieval Egyptian astronomers 15th-century mathematicians Medieval Egyptian mathematicians 1359 births 1447 deaths Scientists from Cairo Mathematicians who worked on Islamic inheritance