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Shigeru Iitaka (飯高 茂 Iitaka Shigeru, born May 29, 1942, Chiba) is a Japanese mathematician at
Gakushuin University is a private university in Mejiro, Toshima, Tokyo. The Gakushūin (or "Peers School") was established during the Meiji period to educate the children of the Japanese nobility, but back then the institution had only the primary and secondary ...
working in algebraic geometry who introduced the
Kodaira dimension In algebraic geometry, the Kodaira dimension measures the size of the canonical model of a projective variety . Soviet mathematician Igor Shafarevich in a seminar introduced an important numerical invariant of surfaces with the notation . ...
, and
Iitaka dimension In algebraic geometry, the Iitaka dimension of a line bundle ''L'' on an algebraic variety ''X'' is the dimension of the image of the rational map to projective space determined by ''L''. This is 1 less than the dimension of the section ring of ''L' ...
. He was a world leader in the field of
Algebraic geometry Algebraic geometry is a branch of mathematics which uses abstract algebraic techniques, mainly from commutative algebra, to solve geometry, geometrical problems. Classically, it studies zero of a function, zeros of multivariate polynomials; th ...
. He received his Ph.D. in 1970 from the
University of Tokyo The University of Tokyo (, abbreviated as in Japanese and UTokyo in English) is a public research university in Bunkyō, Tokyo, Japan. Founded in 1877 as the nation's first modern university by the merger of several pre-westernisation era ins ...
under
Kunihiko Kodaira was a Japanese mathematician known for distinguished work in algebraic geometry and the theory of complex manifolds, and as the founder of the Japanese school of algebraic geometers. He was awarded a Fields Medal in 1954, being the first Japanese ...
with thesis「代数多様体のD-次元について」(''On D-dimensions of algebraic varieties''). He was awarded the Iyanaga Prize of the
Mathematical Society of Japan The Mathematical Society of Japan (MSJ, ) is a learned society for mathematics in Japan. In 1877, the organization was established as the ''Tokyo Sugaku Kaisha'' and was the first academic society in Japan. It was re-organized and re-established i ...
in 1980 and the Japan Academy Prize in 1990.


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CV of Shigeru Iitaka
Living people 20th-century Japanese mathematicians 21st-century Japanese mathematicians Algebraic geometers 1942 births Academic staff of Gakushuin University Scientists from Chiba Prefecture {{Japan-mathematician-stub