Geodesic
The universal deformation of the Witt ring scheme
Sbornik. Mathematics, Tome 208 (2017) no. 6, pp. 764-790

Voir la notice de l'article provenant de la source Math-Net.Ru

We determine the universal deformation over reduced base rings of the Witt ring scheme enhanced by a Frobenius lift and Verschiebung. It agrees with a $q$-deformation introduced earlier by the second author; we also give a simpler description for this. In the appendix we discuss a Witt vector theory for ind-rings which may be of independent interest. Bibliography: 7 titles.
Keywords: Witt ring
Mots-clés : $q$-deformation. 
@article{SM_2017_208_6_a2,
     author = {Christopher Deninger and Young-Tak Oh},
     title = {The universal deformation of the {Witt} ring scheme},
     journal = {Sbornik. Mathematics},
     pages = {764--790},
     publisher = {mathdoc},
     volume = {208},
     number = {6},
     year = {2017},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_2017_208_6_a2/}
}
TY  - JOUR
AU  - Christopher Deninger
AU  - Young-Tak Oh
TI  - The universal deformation of the Witt ring scheme
JO  - Sbornik. Mathematics
PY  - 2017
SP  - 764
EP  - 790
VL  - 208
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SM_2017_208_6_a2/
LA  - en
ID  - SM_2017_208_6_a2
ER  - 
%0 Journal Article
%A Christopher Deninger
%A Young-Tak Oh
%T The universal deformation of the Witt ring scheme
%J Sbornik. Mathematics
%D 2017
%P 764-790
%V 208
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SM_2017_208_6_a2/
%G en
%F SM_2017_208_6_a2
Christopher Deninger; Young-Tak Oh. The universal deformation of the Witt ring scheme. Sbornik. Mathematics, Tome 208 (2017) no. 6, pp. 764-790. http://geodesic.mathdoc.fr/item/SM_2017_208_6_a2/