English

Singular K\"ahler-Ricci Shrinkers are Complex Analytic

Differential Geometry 2026-05-26 v1 Complex Variables

Abstract

We prove that any singular K\"ahler--Ricci shrinker XX arising as a noncollapsed limit of K\"ahler--Ricci flows admits a natural structure of a locally algebraic complex-analytic variety with log terminal singularities. We then derive several geometric consequences: XX is simply connected, has a unique end, has unique tangent cones at every point, and is a smooth orbifold outside a subset of complex codimension at least three. As a further application, we prove a new long-time pseudolocality theorem for almost-selfsimilar K\"ahler--Ricci flows.

Keywords

Cite

@article{arxiv.2605.25213,
  title  = {Singular K\"ahler-Ricci Shrinkers are Complex Analytic},
  author = {Max Hallgren and Junsheng Zhang},
  journal= {arXiv preprint arXiv:2605.25213},
  year   = {2026}
}

Comments

47 pages. Comments welcome!

R2 v1 2026-07-22T07:31:24.683Z