The Orthogonal Projection and the Riesz Representation Theorem
Narita, Keiko, Endou, Noboru, Shidama, Yasunari
Functional Space C(ω), C0(ω)
Kanazashi, Katuhiko, Okazaki, Hiroyuki, Shidama, Yasunari
Formalization of the Data Encryption Standard
Okazaki, Hiroyuki, Shidama, Yasunari