Hiroshi Okamura
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Hiroshi Okamura (Japanese: 岡村 博 Okamura Hiroshi; November 10, 1905 – September 3, 1948) was a Japanese mathematician. He was a professor at Kyoto University, and studied analysis.
He discovered the necessary and sufficient conditions on initial value problems of ordinary differential equations for the solution to be unique. He also refined the second mean value theorem of integration.