1904: Entered Tokyo Fourth Prefectural Middle School (present Tokyo Metropolitan Toyama High School), graduated first top of the science department of Daiichi High School (the first old-education-system high school), and entered the college of science at Tokyo University.
1904年府立四中（現東京都立戸山高等学校）を経て第一高等学校(旧制)理科首席卒、東京大学理科大学数学科に入学