Ibrahim

ibn Sinan ibn Thabit ibn Qurra Ibrahim

Born: 908 in Baghdad, (now in Iraq)
Died: 946 in Baghdad, (now in Iraq)

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Ibrahim was a grandson of Thabit ibn Qurra and studied geometry and in particular tangents to circles. He also studied the apparent motion of the Sun and the geometry of shadows.

His most important work was on the quadrature of the parabola where he introduced a method of integration more general than that of Archimedes. Ibrahim is also considered the foremost Arab mathematician to treat mathematical philosophy.

References:

  1. Dictionary of Scientific Biography
  2. A P Youschkevitch, Note sur les déterminations infinitésimales chez Thabit ibn Qurra, Archives internationales d'histoire des sciences 66 (1964), 37-45. 
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JOC/EFR February 1996