Kiyosi Itô
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Kiyosi Itô was a Japanese mathematician who made fundamental contributions to probability theory, in particular, the theory of stochastic processes. He invented the concept of stochastic integral and
Itô at Cornell University, 1970
Itô (right) with Issei Shiraishi in 1935. Shiraishi later became a mathematician.
Kiyosi Itô (right) with his brother Seizō Itō in 1937. Seizō later became a mathematician.
Itô at the Cabinet Statistics Bureau in 1940
Gisiro Maruyama
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Gisiro Maruyama was a Japanese mathematician, noted for his contributions to the study of stochastic processes. The Euler–Maruyama method for the numerical solution of stochastic differential equation
Kiyosi Itô
…and the lack of awareness of results from them. For instance, the only other Japanese mathematician actively interested in Itô's work during the war, Gisiro Maruyama, read a mimeographed copy of a paper while in a military camp. Scholarly activity during the Occupation of Japan had its difficulties; in one case…
Gisiro Maruyama