Open Mapping Theorem
Sakurai, Hideki, Kunimune, Hisayoshi, Shidama, Yasunari
Gaussian Integers
Futa, Yuichi, Okazaki, Hiroyuki, Mizushima, Daichi, Shidama, Yasunari
Functional Space Consisted by Continuous Functions on Topological Space
Yamazaki, Hiroshi, Miyajima, Keiichi, Shidama, Yasunari