Isomorphism Theorem on Vector Spaces over a Ring
Futa, Yuichi, Shidama, Yasunari
Conservation Rules of Direct Sum Decomposition of Groups
Nakasho, Kazuhisa, Yamazaki, Hiroshi, Okazaki, Hiroyuki, Shidama, Yasunari
Partial Differentiation on Normed Linear Spaces Rn
Endou, Noboru, Shidama, Yasunari, Miyajima, Keiichi