Tamely ramified torsors and parabolic bundles

Indranil Biswas; Niels Borne

Tamely ramified torsors and parabolic bundles

Algebraic Geometry 2020-11-06 v4

Authors: Indranil Biswas , Niels Borne

Abstract

Given a variety $X$ , and a normal crossings divisor $D\subset X$ , we relate, in the case of abelian monodromy, the following two: 1. existence of a $G$ -torsor with prescribed ramification, and 2. existence of essentially finite parabolic vector bundles with prescribed weights.

Keywords

tamely ramified torsors parabolic bundles abelian monodromy normal crossings divisor prescribed ramification essentially finite parabolic vector bundles

Cite

@article{arxiv.1706.06733,
  title  = {Tamely ramified torsors and parabolic bundles},
  author = {Indranil Biswas and Niels Borne},
  journal= {arXiv preprint arXiv:1706.06733},
  year   = {2020}
}

Comments

Final version; to appear in Annali della Scuola Normale Superiore di Pisa

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