Timeline for degree 7 rational curves through ten points in P4
Current License: CC BY-SA 3.0
7 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Mar 23, 2014 at 0:59 | comment | added | Jason Starr | @IMeasy: "it is the cubic that I want to rationalize ..." How are you going to do that? There is certainly a dominant morphism from the corresponding fiber of $\text{ev}$ to the Segre cubic by taking the "residual 21st point". But now you have to produce a rational subvariety of the fiber of $\text{ev}$. Since this is a less concrete variety than the Segre cubic, to me this seems to go in the wrong direction. | |
| Mar 22, 2014 at 10:48 | vote | accept | IMeasy | ||
| Mar 21, 2014 at 19:40 | comment | added | Jason Starr | @IMeasy: I think it will also be difficult to rationalize the variety of degree 7 curves containing 10 nodes. Maybe the Gale transform could help . . . | |
| Mar 21, 2014 at 18:40 | comment | added | Jason Starr | Just out of curiosity, why do you ask about this? | |
| Mar 21, 2014 at 18:14 | answer | added | Jason Starr | timeline score: 6 | |
| Mar 21, 2014 at 17:07 | comment | added | Jim Bryan | The expected dimension of the space of stable maps $M_0(P^4,7)$ is 5*7+1 = 36, and each point imposes a codimension 3 condition so I would expect the dimension of this space to be 6. | |
| Mar 21, 2014 at 17:01 | history | asked | IMeasy | CC BY-SA 3.0 |