Background
Kumahara, Keisaku was born on November 28, 1942 in Sekinomiya, Hyogo, Japan. Son of Tsutomu and Satoe (Yamane) Kumahara.
Kumahara, Keisaku was born on November 28, 1942 in Sekinomiya, Hyogo, Japan. Son of Tsutomu and Satoe (Yamane) Kumahara.
Bachelors degree, Okayama University, Japan, 1965. Masters degree, Okayama University, Japan, 1967. Doctorate degree, Osaka University, Japan, 1972.
Assistant Osaka University, 1967. Associate professor Tottori University, Japan, 1973, professor Japan, 1981, professor emeritus, 1998. Professor University of the Air, 1998.
Member Mathematics Society Japan, American Mathematics Society, Society Mathematics France.
Married Yoko Tamura, October 6, 1973. 1 child, Mariko.