Henri Cartan
Henri Paul Cartan (French: [kaʁtɑ̃]; 8 July 1904 – 13 August 2008) was a French mathematician who made substantial contributions to algebraic topology.He was the son of the mathematician Élie Cartan, nephew of mathematician Anna Cartan, oldest brother of composer Jean Cartan, physicist Louis Cartan and mathematician Hélène Cartan, and the son-in-law of physicist Pierre Weiss.