Skip to main content
3 events
when toggle format what by license comment
Jun 28, 2018 at 19:08 answer added Jason Starr timeline score: 2
Jun 28, 2018 at 19:05 comment added Jason Starr This is not quite what you are asking, but you can modify that construction to make an example where the base locus is a union of rational surfaces, some components of which equal $\mathbb{P}^1\times \mathbb{P}^1$. The construction is too long for a comment, so I will write is as an "answer".
Jun 28, 2018 at 18:06 history asked Ennio Mori cone CC BY-SA 4.0