Differentiability Properties of Lipschitzian Bilinear Operators in Real Normed Spaces
Nakasho, Kazuhisa, Shidama, Yasunari
Dual Spaces and Hahn-Banach Theorem
Narita, Keiko, Endou, Noboru, Shidama, Yasunari
Gaussian Integers
Futa, Yuichi, Okazaki, Hiroyuki, Mizushima, Daichi, Shidama, Yasunari