Timeline for blow-ups of secant varieties
Current License: CC BY-SA 3.0
9 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| May 15, 2013 at 9:00 | answer | added | IMeasy | timeline score: 2 | |
| Jun 16, 2012 at 18:11 | comment | added | Roman | Can you give an example when X_k isn't smooth? -- thanks | |
| Jun 16, 2012 at 0:38 | comment | added | meh | I think this is very hard. Bertram in his range is able to prove that $X_k$ is smooth away from $X_{k-1}$. This will not be true in general. | |
| Jun 15, 2012 at 17:27 | comment | added | Roman | wording corrected | |
| Jun 15, 2012 at 17:26 | history | edited | Roman | CC BY-SA 3.0 |
added 27 characters in body
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| Jun 15, 2012 at 17:25 | comment | added | Roman | yes, I meant blow up of ${\mathbb P}^n$ along $C$, sorry about the imprecise wording | |
| Jun 15, 2012 at 16:27 | comment | added | Jason Starr | @Will -- I think the OP means the blowing up of $\mathbb{P}^n$ along the ideal sheaf of the embedded curve $C$. | |
| Jun 15, 2012 at 15:55 | comment | added | Will Sawin | What does "$X_1$ is the blow-up of $C$" mean? Did you intend to say "the blow-up of $\mathbb P^1$ at $C$"? | |
| Jun 15, 2012 at 15:47 | history | asked | Roman | CC BY-SA 3.0 |