Foliations in deformation spaces of local G-shtukas
Foliations in deformation spaces of local G-shtukas
复制标题
当地 G-shtukas 变形空间中的叶子
DOI:
10.1016/j.aim.2011.08.011
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发表时间:
2012
影响因子:
1.7
通讯作者:
E. Viehmann
中科院分区:
文献类型:
--
作者:
U. Hartl;E. Viehmann
We study local G-shtukas with level structure over a base scheme whose Newton polygons are constant on the base. We show that after a finite base change and after passing to an étale covering, such a local G-shtuka is isogenous to a completely slope divisible one, generalizing corresponding results for p-divisible groups by Oort and Zink. As an application we establish a product structure up to finite surjective morphism on the closed Newton stratum of the universal deformation of a local G-shtuka, similarly to Oortʼs foliations for p-divisible groups and abelian varieties. This also yields bounds on the dimensions of affine Deligne–Lusztig varieties and proves equidimensionality of affine Deligne–Lusztig varieties in the affine Grassmannian.
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影响因子:
0.9
作者:
F. Oort;T. Zink
通讯作者:
T. Zink
影响因子:
2.6
作者:
G. Faltings
通讯作者:
G. Faltings
DOI:
--
发表时间:
2006
期刊:
影响因子:
--
作者:
U. Hartl
通讯作者:
U. Hartl
DOI:
--
发表时间:
2001
期刊:
影响因子:
--
作者:
T. Zink
通讯作者:
T. Zink
DOI:
--
发表时间:
2008
期刊:
影响因子:
--
作者:
U. Hartl;E. Viehmann
通讯作者:
E. Viehmann