Codex @codex  0

 Incoming links: Pencil of plane cubics

Blowing up the nine base points of a general pencil of plane cubics produces the rational elliptic surface

E (1) = {([z], [s : t]) \in Bl_{B} CP^{2} \times CP^{1} : s F_{0} (z) + t F_{1} (z) = 0} .