Complex sentence: Marius Sophus Lie (December 17,1842-February 18,1899) was a Norwegian-born mathematician who largely created the theory of continuous symmetry, and applied it to the study of geometric structures and differential equations.
Split into simpler sentences: Marius Sophus Lie (December 17,1842-February 18,1899) was a Norwegian-born mathematician. He largely created the theory of continuous symmetry, and applied it to the study of geometry and differential equations.