Hiroshi Okamura

Hiroshi Okamura (岡村 博, Okamura Hiroshi, November 10, 1905 – September 3, 1948) was a Japanese mathematician who made contributions to analysis and the theory of differential equations. He was a professor at Kyoto University.^[1][2]

He discovered the necessary and sufficient conditions on initial value problems of ordinary differential equations for the solution to be unique.^[3] He also refined the second mean value theorem of integration.

• Hiroshi Okamura (1941), "Sur l'unicité des solutions d'un système d'équations différentielles ordinaires" (in fr), Mem. Coll. Sci., Kyoto Imperial Univ., A 23: 225–231 
• Hiroshi Okamura (1942), "Condition nécessaire et suffisante remplie par les équations différentielles ordinaires sans points de Peano" (in fr), Mem. Coll. Sci., Kyoto Imperial Univ., A 24: 21–28 
• Hiroshi Okamura (1943), "Sur une sorte de distance relative à un système différentiel" (in fr), Nippon Sugaku-Buturigakkwai Kizi Dai 3 Ki 25: 514–523, https://www.jstage.jst.go.jp/article/ppmsj1919/25/0/25_0_514/_pdf 
• Hiroshi Okamura (1950), "On the surface integral and Gauss-Green's theorem", Memoirs of the College of Science, University of Kyoto, A: Mathematics 26 (9): 5–14, doi:10.1215/kjm/1250778050, https://projecteuclid.org/download/pdf_1/euclid.kjm/1250778050  (posthumous)

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