## Tsukuba Journal of Mathematics

The Tsukuba Journal of Mathematics is a continuation of Science Reports of the Tokyo Bunrika Daigaku, Section A (1930-1953), and Science Reports of the Tokyo Kyoiku Daigaku, Section A (1954-1977). The journal publishes original contributions to pure and applied mathematics. All papers are refereed.

Helicoidal surfaces in the 3-dimensional Lorentz-Minkowski space $E^3_1$ satisfying $\Delta^{III}r=Ar$Volume 37, Number 2 (2013)
On the Cartier duality of certain finite group schemes of type $(p^n, p^n)$Volume 34, Number 1 (2010)