Shigeo Sasaki

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Shigeo Sasaki , (born November 18, 1912 in Yamagata Prefecture , † August 14, 1987 ) was a Japanese mathematician.

Sasaki was the son of farmers and grew up with his uncle, a Buddhist priest. He went to school in Sakata, where his mathematical talent was noticed, and attended high school in Sendai. From 1932 he studied at Tohoku Imperial University , where Tadahiko Kubota was his teacher and he began to be interested in differential geometry . He stayed at the university after graduating in 1935 and became a lecturer in 1937. In 1943 he received his doctorate. In the same year he also completed work on a book on the geometry of conformal relationships, which was not published until 1948. In it he dealt with the conformal properties of curves and surfaces in Riemannian spaces .

In 1946 he succeeded Kubota professor at Tohoku University.

From 1952 to 1954 he was at the Institute for Advanced Study , where he worked with Oswald Veblen and Marston Morse , and was with SS Chern at the University of Chicago in 1954 (Chern returned the visit in 1974 and was friends with Sasaki). In 1976 he retired and became a professor at the Science University of Tokyo.

He dealt with Lie geometry of circles, geometry of conformal connections , projective connections , holonomy groups , Hermitian manifolds , geometry of tangential bundles (here the Sasaki metric is named after him) and almost contact manifolds ( Sasaki manifolds ) and global properties of curves and surfaces in different rooms. He wrote a textbook on differential geometry.

Fonts

  • S. Tachibana (Ed.): Shigeo Sasaki: Selected papers, Tokyo 1985 (with commentary by Sasaki and memoirs by Chern)
  • On the differential geometry of tangent bundle of Riemannian manifolds, Tôhoku Math. J., Volume 10, 1958, pp. 338-354.
  • On differentiable manifolds with certain structures which are closely related to almost contact structure I, Tohoku Math. J., Volume 12, 1960, pp. 459-476
  • Almost contact manifold, part 1–3, lectures, Math. Institute Tohoku Univ., 1965, 1967, 1968

Web links

Individual evidence

  1. ↑ Sasaki Manifold, Ncat Lab
personal data
SURNAME Sasaki, Shigeo
BRIEF DESCRIPTION Japanese mathematician
DATE OF BIRTH November 18, 1912
PLACE OF BIRTH Yamagata Prefecture
DATE OF DEATH August 14, 1987