English

A functorial approach to the stability of vector bundles

Algebraic Geometry 2024-10-23 v2

Abstract

On a normal projective variety the locus of μ\mu-stable bundles that remain μ\mu-stable on all Galois covers prime to the characteristic is open in the moduli space of Gieseker semi-stable sheaves. On a smooth projective curve of genus at least 2 this locus is big in the moduli space of stable bundles, i.e., its complement has codimension at least 2.

Keywords

Cite

@article{arxiv.2211.08260,
  title  = {A functorial approach to the stability of vector bundles},
  author = {Dario Weissmann},
  journal= {arXiv preprint arXiv:2211.08260},
  year   = {2024}
}

Comments

final version to appear in mathz. improved exposition; appendix can still be found in the authors thesis. results unchanged