Free ℤ-module
Futa, Yuichi, Okazaki, Hiroyuki, Shidama, Yasunari
Continuity of Bounded Linear Operators on Normed Linear Spaces
Nakasho, Kazuhisa, Futa, Yuichi, Shidama, Yasunari
Riemann Integral of Functions R into C
Miyajima, Keiichi, Kato, Takahiro, Shidama, Yasunari