ISBN-13: 9781939161697 / Angielski / Twarda / 2018 / 112 str.
During the period of national isolation, a mathematical tradition called wasan flourished in Japan. Its practitioners produced results comparable to those of mathematicians of the European Enlightment. This companion volume to Unger's earlier translation of solutions by Aida Yasuaki (1747-1817), focuses on problems that he likely used as a teacher.