Sophus Lie (1842–1899)
Born 1842 CE, died 1899 CE.
Marius Sophus Lie ( LEE; Norwegian: [liː]; 17 December 1842 – 18 February 1899) was a Norwegian mathematician. He largely created the theory of continuous symmetry and applied it to the study of geometry and differential equations. He also made substantial contributions to the development of algebra.
Text from the Wikipedia article Sophus_Lie, licensed CC BY-SA 4.0.