The Orthogonal Projection and the Riesz Representation Theorem
Narita, Keiko, Endou, Noboru, Shidama, Yasunari
Riemann Indefinite Integral of Functions of Real Variable
Shidama, Yasunari, Endou, Noboru, Wasaki, Katsumi
Integrability of Multivariable Continuous Functions
Endou, Noboru, Shidama, Yasunari