Name Shoichiro Sakai | ||
Books C*-Algebras and W*-Algebras, Operator algebras in dynamical systems Awards Guggenheim Fellowship for Natural Sciences, US & Canada | ||
Education Tohoku University (1961) | ||
Shoichiro Sakai (境 正一郎, Sakai Shōichirō, born 1928 in Kanuma, Tochigi) is a Japanese mathematician.
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Life
Sakai studied mathematics at the Tohoku University (Sendai). He there received the B. A. degree in 1953 and a doctorate at the same University in 1961. From 1960 to 1964, he was a faculty member of Waseda University. He then went to the University of Pennsylvania, where he became a professor in 1966 and remained until 1979. He then returned to Japan and went to the Nihon University. In 1992, he received the Japanese Mathematical Society Autumn Prize. He is a fellow of the American Mathematical Society.
Sakai's main field is functional analysis and mathematical physics. His textbook published in the Springer series in C *-algebras and W *-algebras, in which W *-algebras as C *-algebras are introduced with a predual, is widely used. That fact the W *-algebras may be defined in this way is known as a theorem of Sakai (cf. a theorem of Kadison-Sakai.)