A note on normal triple covers over ${\mathbb{P}}^2$ with branch divisors of degree 6

Taketo Shirane

Let $S$ and $T$ be reduced divisors on ${\mathbb{P}}^2$ which have no common components, and $\Delta =S+2T.$ We assume $\mathrm{deg}\Delta =6.$ Let $\pi :X\to {\mathbb{P}}^2$ be a normal triple cover with b…