The local lifting problem for dihedral groups

Let G = D p be the dihedral group of order 2 p , where p is an odd prime. Let k be an algebraically closed field of characteristic p . We show that any action of G on the ring k [ [ y ] ] can be lifted to an action on R [ [ y ] ] , where R is some complete discrete valuation ring with residue field...

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Veröffentlicht in:Duke mathematical journal 2006-09, Vol.134 (3), p.421-452
Hauptverfasser: Bouw, Irene I., Wewers, Stefan
Format: Artikel
Sprache:eng
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Zusammenfassung:Let G = D p be the dihedral group of order 2 p , where p is an odd prime. Let k be an algebraically closed field of characteristic p . We show that any action of G on the ring k [ [ y ] ] can be lifted to an action on R [ [ y ] ] , where R is some complete discrete valuation ring with residue field k and fraction field of characteristic 0
ISSN:0012-7094
1547-7398
DOI:10.1215/S0012-7094-06-13431-2