Shoichiro Sakai

Shoichiro Sakai (Japanese境 正 一郎, Shoichiro Sakai, born 1928 in Kanuma, Japan) is a Japanese mathematician.

Life

Sakai studied at Tohoku University ( Sendai ) mathematics. In 1953, he earned his BA degree and received his doctorate at the same university in 1961. From 1960 to 1964 he was a member of the faculty of Waseda University. He then went to the University of Pennsylvania, where he became professor in 1966 and remained until 1979. He then returned to Japan and went to the Nihon University. In 1992 he received the Prize of the Japanese Autumn Mathematical Society.

Field of work

Sakai's main areas of work were functional analysis and mathematical physics. His recent in the Springer series textbook C * - Algebras and W * - Algebras, in the W *-algebras are introduced as C *-algebras with a Prädual, became widespread. That will be actually defined this way, the W *-algebras, also known as a set of Sakai. The returning him messages stating that derivative ions on a W * - algebra and also on a simple C * - algebra are always internal, are also cited as a set of Sakai, the. W * - case as a set of Kadison - Sakai

Works

• C * - Algebras and W * - Algebras, Springer-Verlag 1971, results in mathematics and its applications, Volume 60, ISBN 3-540-63633-1
• Operator algebras in dynamical systems, the theory of unbounded derivations in C * - algebras, Cambridge University Press ( 1991) ISBN 0-521-40096-1