Divisible ℤ-modules
Futa, Yuichi, Shidama, Yasunari
Egoroff's Theorem
Endou, Noboru, Shidama, Yasunari, Narita, Keiko
Operations of Points on Elliptic Curve in Projective Coordinates
Futa, Yuichi, Okazaki, Hiroyuki, Mizushima, Daichi, Shidama, Yasunari