Lazar Lyusternik
Russian mathematician (1899-1981) · Academics · Died at 81
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Something wrong?Lazar Aronovich Lyusternik was a Soviet mathematician. He is famous for his work in topology and differential geometry, to which he applied the variational principle.
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Lazar Aronovich Lyusternik was a Soviet mathematician. He is famous for his work in topology and differential geometry, to which he applied the variational principle. Using the theory he introduced, together with Lev Schnirelmann, he proved the theorem of the three geodesics, a conjecture by Henri Poincaré that every convex body in 3-dimensions has at least three simple closed geodesics. The ellipsoid with distinct but nearly equal axis is the critical case with exactly three closed geodesics.
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