Timeline for What is the fan of the toric blow-up of $\mathbb{P}^3$ along the union of two intersecting lines?
Current License: CC BY-SA 3.0
4 events
| when toggle format | what | by | license | comment | |
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| Apr 27, 2015 at 21:05 | comment | added | pinaki | Well, $w \equiv 0$ on both $C_i$, so definitely $wz$ is in the ideal, no? | |
| Jul 14, 2011 at 19:04 | comment | added | Enrique Acosta | This way to get the polytope is very nice! Is there a place where I can read about it? Thanks! | |
| Jul 14, 2011 at 17:39 | comment | added | David E Speyer | See the discussion at mathoverflow.net/questions/37749/… for discussion of when blow ups are and are not normal. Karl S's example in that thread shows that blowing up a torus invariant subscheme can give a nonnormal result. I don't know an example where the locus being blown up is reduced and you get something non-normal, but I would guess that such examples exist. | |
| Jul 14, 2011 at 13:39 | history | answered | pinaki | CC BY-SA 3.0 |