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Something wrong?Sophus Lie built the mathematics of continuous symmetry - the language that describes how shapes and equations transform smoothly without breaking. His work gave physicists and geometers a way to see what stays constant when everything else flows.
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Marius Sophus Lie was born in Norway on 17 December 1842. He largely created the theory of continuous symmetry, then turned it loose on geometry and differential equations - problems that had resisted older tools. Along the way he made substantial contributions to algebra, reshaping how mathematicians thought about structure itself. He died on 18 February 1899, leaving a framework that would quietly underpin much of twentieth-century physics.
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