A History of Japanese Mathematics Combining descriptions of his business

Combining descriptions of his business practices with his personal characteristics and even his physical appearance

12 nautical and astronomical problems

illuminated letters

black hawk

christian living

A History of Japanese Mathematics Combining descriptions of his businessOne of the first books to show Westerners the nature of Japanese mathematics, this survey highlights the leading features in the development of the wasan, the Japanese system of mathematics. Topics include the use of the soroban, or abacus; the application of sangi, or counting rods, to algebra; the discoveries of the 17th century sage Seki Kowa; the yenri, or circle principle; the work of 18th century geometer Ajima Chokuyen; and Wada Nei's