English

Uhlenbeck compactification as a Bridgeland moduli space

Algebraic Geometry 2020-07-27 v1

Abstract

Let (X,H)(X,H) be a smooth, projective, polarized surface over C\mathbb{C}, and let vKnum(X)v \in K_{\mathrm{num}}(X) be a class of positive rank. We prove that for certain Bridgeland stability conditions σ=(A,Z)\sigma = (\mathcal{A}, Z) "on the vertical wall" for vv, the good moduli space Mσ(v)M^\sigma(v) parameterizing S-equivalence classes of σ\sigma-semistable objects of class vv in A\mathcal{A} is projective. Moreover, we construct a bijective morphism MUhl(v)Mσ(v)M^{\mathrm{Uhl}}(v) \to M^\sigma(v) from the Uhlenbeck compactification of μ\mu-stable vector bundles.

Keywords

Cite

@article{arxiv.2007.12237,
  title  = {Uhlenbeck compactification as a Bridgeland moduli space},
  author = {Tuomas Tajakka},
  journal= {arXiv preprint arXiv:2007.12237},
  year   = {2020}
}

Comments

38 pages

R2 v1 2026-06-23T17:21:41.107Z