Timeline for Higher ramification loci for finite maps
Current License: CC BY-SA 4.0
4 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Apr 25, 2019 at 13:26 | comment | added | Daniele A | Thank you for the suggestion. Unfortunately, I think that this does not help since the morphism is not general: is the one induced by the differential of $f$. | |
| Apr 23, 2019 at 17:14 | comment | added | Sasha | If $\phi \colon E \to F$ is a general morphism of vector bundles (i.e., general element in the vector space $\Hom(E,F)$) and if the bundle $E^\vee \otimes F$ is globally generated, then the corank 2 locus has expected codimension. Does that help? | |
| Apr 23, 2019 at 13:50 | comment | added | Daniele A | Thank you Sasha. Indeed, I was aware of this, and in my case, I get a nonzero cohomology class. However my problem is more that the locus could be too big, hence I am looking at a lower bound for the codimension. Is there any way to get one? | |
| Apr 23, 2019 at 11:59 | history | answered | Sasha | CC BY-SA 4.0 |