Euler, Leonhard

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Euler, Leonhard (1707–83) Swiss mathematician. He is best known for his geometric theorem, which states that for any polyhedron (many-sided figure), V E + F = 2, where V is the number of vertices, E the number of edges, and F the number of faces. Euler conducted much research into the number e, the base of natural logarithms.

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Leonhard Euler

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