Kinnosuke Ogura (born Sakata, Yamagata, 1885 – 1962, ja, 小倉金之助) was a Japanese mathematician and historian of mathematics. He graduated in 1905 from Tokyo College of Science (now Tokyo Science University), and was a lecturer there from 1910 to 1911. He was assistant at the Department of Mathematics of the new

Tohoku Imperial University , or is a Japanese national university located in Sendai, Miyagi in the Tōhoku Region, Japan. It is informally referred to as . Established in 1907, it was the third Imperial University in Japan and among the first three Designated National ...

from 1911 to 1917, and received his Ph.D. in 1916 with a thesis on

trajectories A trajectory or flight path is the path that an object with mass in motion follows through space as a function of time. In classical mechanics, a trajectory is defined by Hamiltonian mechanics via canonical coordinates; hence, a complete traj ...

in the conservative field of

force In physics, a force is an influence that can change the motion of an object. A force can cause an object with mass to change its velocity (e.g. moving from a state of rest), i.e., to accelerate. Force can also be described intuitively as a p ...

. He did research in France for two years, from 1919 to 1922. He was an Invited Speaker of the ICM in 1920 at Strasbourg. Ogura was a researcher from 1917 to 1937 at the Shiomi Institute of Physical and Chemical Research (antecedent of the Faculty of Science, Osaka Imperial University). He was appointed in 1940 as Chief Director of Tokyo College of Science. In 1946 he was elected President of the Association of Democratic Scientists of Japan. Ogura died in 1962. His ''Collected Works'' appeared in eight volumes in 1974.

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