Pencil of plane cubics
= Pencil of plane cubics
A pencil generated by cubic forms $F_0,F_1$ is the one-parameter family $sF_0+tF_1=0$ indexed by $[s:t]\in\mathbb{CP}^1$. A general pair has nine transverse base points.
= Pencil of plane cubics
A pencil generated by cubic forms $F_0,F_1$ is the one-parameter family $sF_0+tF_1=0$ indexed by $[s:t]\in\mathbb{CP}^1$. A general pair has nine transverse base points.