Study on books and manuscripts left by Nishida Akinori from the point of view of mathematical history

西田明典在江户末年的青年时期，学习关氏“和山”学派的古数学，晚年投身于明治时代的国防事业，并在御茶水大学图书馆留下了和山的书籍。作者研究了它们，并研究了世界上第一个研究“结果和行列式”的江户时代早期的日本数学家高津关的生平和参考书目。在关先生逝世300周年之际，作者找到了一些关于他的家庭的重要记录和事实，特别是他的养父和他的第一次事业。现在可以写一份“高津关的简历”。作者还对关氏π的计算和行列式提出了新的观点。

Nishida Akinori, studied old mathematics of Seki's school, so-called "Wasan", in his youth, in the last period of the Edo Era, devoted his latter life to the national defense in the Meiji Era and left books of Wasan in the Library of Ochanomizu University. The author studied them and, life and bibliography of Seki Takakazu, a Japanese mathematician in the early period of the Edo era, who is known as the first in the world to study the so-called "resultants and determinants." On the occasion of the 300th posthumous anniversary of Seki, the author has found some significant records and facts concerning his family, especially his adoptive father and his first career. Now it is possible to write a "Curriculum Vitae of Seki Takakazu." The author also gave new viewpoints on Seki's calculation of π and the determinants.