Newton strata in the loop group of a reductive group

Eva Viehmann

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arXiv · 1005.5725

Newton strata in the loop group of a reductive group

Eva Viehmann

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Abstract

We generalize purity of the Newton stratification to purity for a single break point of the Newton point in the context of local G-shtukas respectively of elements of the loop group of a reductive group. As an application we prove that elements of the loop group bounded by a given dominant coweight satisfy a generalization of Grothendieck's conjecture on deformations of p-divisible groups with given Newton polygons.

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Eva Viehmann. 2011-05-04. Newton strata in the loop group of a reductive group. https://arxiv.org/abs/1005.5725

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