Banach’s Continuous Inverse Theorem and Closed Graph Theorem
Sakurai, Hideki, Okazaki, Hiroyuki, Shidama, Yasunari
Torsion Z-module and Torsion-free Z-module
Futa, Yuichi, Okazaki, Hiroyuki, Nakasho, Kazuhisa, Shidama, Yasunari
Baire's Category Theorem and Some Spaces Generated from Real Normed Space1
Endou, Noboru, Shidama, Yasunari, Okamura, Katsumasa