Riemann-Hurwitz formula
= Riemann-Hurwitz formula
{c}
{wiki=Riemann–Hurwitz_formula}
For a degree-$d$ holomorphic map, $2g_X-2=d(2g_Y-2)+\sum(e_p-1)$.
= Riemann-Hurwitz formula
{c}
{wiki=Riemann–Hurwitz_formula}
For a degree-$d$ holomorphic map, $2g_X-2=d(2g_Y-2)+\sum(e_p-1)$.