Sivin, Nathan.
Granting the seasons : the Chinese astronomical reform of 1280, with a study of its many dimensions and a translation of its records : Shou shih li cong kao / Nathan Sivin ; with the research collaboration of the late Kiyosi Yabuuti, Yabuuchi Kiyosi, and Shigeru Nakayama, Nakayama Shigeru.
China's most sophisticated system of computational astronomy was created for a Mongol emperor who could neither read nor write Chinese, to celebrate victory over China after forty years of devastating war. This book explains how and why, and reconstructs the working group, the observatory and the science that made it possible.
Astronomy, Chinese -- History.
Yabuuchi, Kiyoshi, 1906-2000.
Nakayama, Shigeru, 1928-2014.