Kōsaku Yosida

was a Japanese mathematician who worked in the field of functional analysis. He is known for the Hille-Yosida theorem concerning C₀-semigroups. Yosida studied mathematics at the University of Tokyo, and held posts at Osaka and Nagoya Universities. In 1955, Yosida returned to the University of Tokyo.

See also

• Einar Carl Hille
• Functional analysis

References

• Kôsaku Yosida: Functional analysis. Grundlehren der mathematischen Wissenschaften 123, Springer-Verlag, 1971 (3rd ed.), 1974 (4th ed.), 1978 (5th ed.), 1980 (6th ed.)

External links

• Photo
• Kosaku Yosida / School of Mathematics and Statistics University of St Andrews, Scotland
• 94. Normed Rings and Spectral Theorems, II. By Kôsaku YOSIDA. Mathematical Inlstitute, Nagoya Imperial University. (Comm. by T.TAKAGMI, M.I.A. Oct.12,1943.)
• Kosaku Yosida (1909 - 1990) - Biography - MacTutor