| 図6 "VARIOUS SERIES FOR π OBTAINED BY THE OLD JAPANESE MATHEMATICIANS By Prof. D. Kikuchi, （Imperial Univ., Tokyo）"（『東京数学物理学会記事』7,1895） |
| 図6 "VARIOUS SERIES FOR π OBTAINED BY THE OLD JAPANESE MATHEMATICIANS By Prof. D. Kikuchi, （Imperial Univ., Tokyo）"（『東京数学物理学会記事』7,1895） |