Liftable D_4-Covers
| dc.creator | Brewis, Louis Hugo | |
| dc.date | 2007-08-29 | |
| dc.date.accessioned | 2026-07-07T08:26:24Z | |
| dc.date.available | 2026-07-07T08:26:24Z | |
| dc.description | Let k be an algebraically closed field of characteristic p and let G be a subgroup of Aut(k[[t]]) be a faithful action on a local power series ring over k. Let R be a discrete valuation ring of characteristic 0 with residue field k. One asks, whether it is possible to find a faithful action G inside Aut(R[[t]]) which reduces to the given action, i.e. a lift to characteristic 0. We show that liftable actions exists in the case that G = D_4 and p = 2. In fact we introduce a family, the supersimple D_4 -actions, which can always be lifted to characteristic 0. | |
| dc.identifier | https://arxiv.org/abs/0708.3952 | |
| dc.identifier | http://arxiv.org/abs/0708.3952 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/136928 | |
| dc.subject | Algebraic Geometry | |
| dc.subject | Number Theory | |
| dc.subject | 14H37, 11G20, 14D15 | |
| dc.title | Liftable D_4-Covers | |
| dc.type | text |