1875-1960

Japanese mathematician who made contributions to class field theory, a subject on which he wrote two comprehensive papers in 1920 and 1922. After graduating from Tokyo University, Takagi studied for several years in Germany at the universities of Berlin and Göttingen, then returned to Tokyo to complete his doctorate in 1903. He received a professorship at Tokyo the next year and remained at that institution until his retirement in 1936. Takagi produced two important works—Introduction to Analysis (1938) and Algebraic Number Theory (1948).