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Seki-ryu Wasan and Yuzo Omata

Updated: June 28, 2017

Edo period Seki style Wasan ( Sekiryuwa-san )

Japan's unique mathematics developed in the Edo period Wasan ( Wasan ) It's called. Already in Japan Asuka ( Asuka ) Mathematics was introduced from China around the time, but it did not become popular. After that, from the Sengoku period to the early Edo period, castle construction ( Chikujo )Civil engineering construction ( Dobokufushin )Land inspection ( Kenchi )・As the need for calculation increases due to economic development, China calculation book ( Sansho ) based on the influence of Wasan ( Wasan ) will develop. This mathematician who can be called the founder of Wasan, which developed during the Edo period, Takakazu Seki ( Sekitakazu ) is. Wasan, invented by Takakazu Seki, became popular in the early Edo period. Kanryu Wasan ( Sekiryu Uwagun ) It was called.

Instructor of the Seki School of Wasan, Yuzo Omata ( Omata Yuzo )


In the Inagi region, as a leader of Seki-ryu Wasan during the Meiji period, Yuzo Omata ( Omata Yuzo ) is famous. Yuzo Omata is Tenpo ( Tempou ) Born on October 4, 1840 in Yanoguchi Village. I have been learning arithmetic since I was young, Self-study ( Poisonous ) Sensing the limits of this, he moved to Tokyo in 1877. Traveling to school ( Yugaku ) death, Riken Fukuda ( Fukudariken ) ( Juntendo Gugosha ( Juntendo Kyushosha ) He learned the Seki school of Wasan from the Wasan School (He ran a Wasan school called ``Wasan School''). Around the time of this trip to Tokyo, he began teaching Wasan in Yanoguchi Village, and it is said that he had many disciples from all walks of life. Also by the disciples Anazawa Tenjin Shrine ( Anasawa Tenjinsha ) (Yanoguchi, Inagi City), Okunitama Shrine ( Ookuni Tamajinja ) (Fuchu City) calculation amount ( Search ) will be dedicated. In 1855, `` mathematical illustrations ( Suurizukai ) ” Yuzo Omata's accomplishments can be seen in the shrine erected on the grounds of Anazawa Tenjin Shrine by his disciples in July 1897. Omata Kimiju Monument ( Omata Kunjuhi ) memorial monument ( Shotokuhi ) You can know by.

Inquiries about this page

Lifelong Learning Division, Education Department, Inagi City
2111 Higashi Naganuma, Inagi City, Tokyo
Phone: 042-377-2121 Fax: 042-379-0491

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