Sophus Lie

 Sophus Lie was a Norwegian mathematician who made significant contributions to the field of mathematics, particularly in the areas of group theory and differential equations. He is known for his work on the classification of simple Lie groups and his development of the theory of continuous symmetry, which has had a significant impact on the study of geometry and physics. Lie is also known for his work on the theory of differential equations and his development of the theory of Lie groups, which are fundamental in the study of symmetries in mathematics and physics. His contributions to mathematics have had a lasting impact on the development of the field and he is considered one of the most influential mathematicians in history