The Nihonkai Mathematical Journal publishes original contributions in all disciplines in mathematics.
Hypergroup extensions of finite Abelian groups by hypergroups of order two
Ryo Ichihara, et al. (2010)
On Space-Like Kähler Submanifolds with $RS=0$ in an Indefinite Complex Space Form
YONG-SOO PYO, et al. (2000)
