Eastern League (Japanese baseball) Eagles were formed to join NPB, and their farm team became part of the Eastern League as well. The league currently contains the minor league affiliates of seven Japanese professional teams. With a few exceptions, Eastern League teams currently carry the same name, and use the same uniforms, as their parent team. Current teams (minor league homefield shown in parentheses): Eastern League (Japanese baseball) The is one of the two minor leagues ("ni-gun") of Japanese professional baseball. The league is owned and managed by the Central League of Nippon Professional Baseball (NPB). Teams in the Eastern League generally play an
Yoshida Mitsuyoshi Yoshida Mitsuyoshi , also known as Yoshida Kōyū, was a Japanese mathematician in the Edo period. His popular and widely disseminated published work made him the most well known writer about mathematics in his lifetime. He was a student of Kambei Mori (also known as Mōri Shigeyoshi). Along with Imamura Chishō and Takahara Kisshu, Yoshida became known to his contemporaries as one of "the Three Arithmeticians." Yoshida was the author of the oldest extant Japanese mathematical text. The 1627 work was named "Jinkōki". The work dealt with the subject of soroban arithmetic, including square and cube root operations. In a