English

Riemann-Hilbert for tame complex parahoric connections

Differential Geometry 2011-04-26 v2 Algebraic Geometry Representation Theory

Abstract

A local Riemann-Hilbert correspondence for tame meromorphic connections on a curve compatible with a parahoric level structure will be established. Special cases include logarithmic connections on G-bundles and on parabolic G-bundles, where G is a complex reductive group. The corresponding Betti data involves pairs (M,P) consisting of the local monodromy M in G and a (weighted) parabolic subgroup P of G such that M is in P, as in the multiplicative Brieskorn-Grothendieck-Springer resolution (extended to the parabolic case). The natural quasi-Hamiltonian structures that arise on such spaces of enriched monodromy data will also be constructed.

Keywords

Cite

@article{arxiv.1003.3177,
  title  = {Riemann-Hilbert for tame complex parahoric connections},
  author = {Philip Boalch},
  journal= {arXiv preprint arXiv:1003.3177},
  year   = {2011}
}

Comments

24 pages, minor improvements

R2 v1 2026-06-21T14:58:30.518Z