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Poincaré, (Jules) Henri
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Poincaré, (Jules) Henri
French mathematician who developed the theory of differential equations and was a pioneer in relativity theory. He suggested that Isaac Newton's laws for the behaviour of the universe could be the exception rather than the rule. However, the calculation was so complex and time-consuming that he never managed to realize its full implication.
Poincaré wrote on the philosophy of science. He believed that some mathematical ideas precede logic, and stressed the role played by convention in scientific method.
He also published the first paper devoted entirely to topology (the branch of geometry that deals with the unchanged properties of figures).
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