April 21, 1875|
Kazuya village near Gifu
|Died||February 28, 1960
|Institutions||Tokyo Imperial University|
|Alma mater||Tokyo Imperial University|
|Doctoral advisor||David Hilbert|
|Doctoral students||Shokichi Iyanaga
|Known for||Takagi curve, Takagi existence theorem|
Teiji Takagi (高木 貞治 Takagi Teiji, April 21, 1875 – February 28, 1960) was a Japanese mathematician, best known for proving the Takagi existence theorem in class field theory. The Blancmange curve, the graph of a nowhere-differentiable but uniformly continuous function, is also called the Takagi curve after his work on it.
He was born in the rural area of the Gifu Prefecture, Japan. He began learning mathematics in middle school, reading texts in English since none were available in Japanese. After attending a high school for gifted students, he went on to the University of Tokyo, at that time the only university in Japan. There he learned mathematics from such European classic texts as Salmon's Algebra and Weber's Lehrbuch der Algebra. Aided by Hilbert, he then studied at Göttingen. Aside from his work in algebraic number theory he wrote a great number of Japanese textbooks on mathematics and geometry.
- Takagi, Teiji (2014) , Iyanaga, Shokichi, ed., Collected papers, Springer Collected Works in Mathematics (2 ed.), Springer-Verlag, ISBN 978-4431549949, MR 1129240
- O'Connor, John J.; Robertson, Edmund F., "Teiji Takagi", MacTutor History of Mathematics archive, University of St Andrews.
- Teiji Takagi at the Mathematics Genealogy Project
- Takagi Lectures by the Mathematical Society of Japan