Andre Weil
André Weil (/veɪ/; French: [ɑ dʁe vɛj]; 6 May 1906 – 6 August 1998) was an influential French mathematician of the 20th century, known for his foundational work in number theory and algebraic geometry. He was a founding member and the de facto early leader of the influential Bourbaki group. The philosopher Simone Weil was his sister.