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a mathematician and geometer at Kyiv University (University of St. Volodymyr, Kyiv). In 1923, Tolpygo's father was arrested by the Cheka, for alleged "counter-revolutionary" activities. Through the intervention of individuals such as Raymond Poincaré, President of France, he avoided execution and was sentenced to 10 years hard labor. In 1947, Tolpygo's

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