Ibn al-Haytham
Mathematical works

In mathematics, Alhazen built on the mathematical works of Euclid and Thabit ibn Qurra and worked on "the beginnings of the link between algebra and geometry ". Alhazen made developments in conic sections and number theory.

He developed a formula for summing the first 100 natural numbers, using a geometric proof to prove the formula.
keywords:frequency, punctuation:no_comma, detectable_content:number_placeholders[6]