1899 - 1981
Lazar Lyusternik Polish Mathematician
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Lazar Lyusternik is a member of the following lists: 1899 births, 1981 deaths and Russian Jews.
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Details
| First Name |
Lazar
|
| Last Name |
Lyusternik
|
| Birthday |
31st December, 1899
|
| Birthplace |
Zduńska Wola, Congress Poland, Russian Empire
|
| Died |
23rd July, 1981
|
| Place of Death |
Moscow, USSR
|
| Zodiac Sign |
Capricorn
|
| Nationality |
Polish
|
| Occupation |
Mathematician
|
Lazar Aronovich Lyusternik (also Lusternik, Lusternick, Ljusternik; Ла́зарь Аро́нович Люсте́рник; 31 December 1899, Zduńska Wola, Congress Poland, Russian Empire (present-day Republic of Poland) – 23 July 1981, Moscow, Russia, Soviet Union) 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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