. . . . . . . "Egorov, Dimitri"@en . "1869-12-22Z"^^ . "1931Z"^^ . . "Dmitri Egorov"@en . . . . . . . . "1869Z"^^ . . . . "Dmitri Fyodorovich Egorov (Russian: \u0414\u043C\u0438\u0301\u0442\u0440\u0438\u0439 \u0424\u0451\u0434\u043E\u0440\u043E\u0432\u0438\u0447 \u0415\u0433\u043E\u0301\u0440\u043E\u0432; December 22, 1869 \u2013 September 10, 1931) was a Russian and Soviet mathematician known for significant contributions to the areas of differential geometry and mathematical analysis. President of the Moscow Mathematical Society (1923 \u2014 1930)."@en . "1931-09-10Z"^^ . . . "Russian mathematician" . . .