Timeline for Galois action on special fiber of a stable model
Current License: CC BY-SA 3.0
5 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Feb 19, 2013 at 1:28 | vote | accept | kiseki | ||
| Feb 15, 2013 at 17:57 | comment | added | Qing Liu | It is proved with full details in Mireille Deschamps's talk in Asteristisque vol. 86 (I guess this is [D] in Green-Matignon). | |
| Jan 28, 2013 at 20:20 | comment | added | Matthieu Romagny | Pranavk, you're right that the proof is not in Deligne-Mumford and I don't know if it appears in the literature. Your answer is certainly very useful and I just wanted to point out that the statement appears. | |
| Jan 27, 2013 at 20:25 | comment | added | user30379 | @Matthieu: The reference to DM within that paper is for the existence of a stable model over some finite extension of the ground field. No doubt DM knew how to deduce the injectivity from what they'd done, but it isn't in the DM paper, right? ([DM, 1.13] is suggestive, but not quite enough, as one does have to bring in the orthogonality theorem and the inertial unipotence criterion more directly, it seems.) Does the other reference (called [D]) in the Lehr-Matignon paper give a statement and proof of the injectivity? Just curious if the proof is in the literature. | |
| Jan 27, 2013 at 16:48 | history | answered | Matthieu Romagny | CC BY-SA 3.0 |