Banach’s Continuous Inverse Theorem and Closed Graph Theorem
Sakurai, Hideki, Okazaki, Hiroyuki, Shidama, Yasunari
Riemann Indefinite Integral of Functions of Real Variable
Shidama, Yasunari, Endou, Noboru, Wasaki, Katsumi
Contracting Mapping on Normed Linear Space
Miyajima, Keiichi, Korniłowicz, Artur, Shidama, Yasunari