English

Locally Removable Singularities for K\"{a}hler Metrics with Constant Holomorphic Sectional Curvature

Differential Geometry 2019-09-05 v5 Complex Variables

Abstract

Let n2n\ge 2 be an integer, and BnCnB^{n}\subset \mathbb{C}^{n} the unit ball. Let KBnK\subset B^{n} be a compact subset such that BnKB^n\setminus K is connected, or K={z=(z1,,zn)z1=z2=0}CnK=\{z=(z_1,\cdots, z_n)|z_1=z_2=0\}\subset \mathbb{C}^{n}. By the theory of developing maps, we prove that a K\"{a}hler metric on BnKB^{n}\setminus K with constant holomorphic sectional curvature uniquely extends to BnB^{n}.

Keywords

Cite

@article{arxiv.1812.11719,
  title  = {Locally Removable Singularities for K\"{a}hler Metrics with Constant Holomorphic Sectional Curvature},
  author = {Si-en Gong and Hongyi Liu and Bin Xu},
  journal= {arXiv preprint arXiv:1812.11719},
  year   = {2019}
}

Comments

13 pages, 2 figures. We made the following revisements: 1. We added a new condition in Theorem 1.1 that $B^n\setminus K$ is connected, which is necessary for the truth of the theorem. 2. We added Remark 1.4, which says that there do exist isolated singularities for Riemannian metrics of constant sectional curvature in real dimension three or more