English

Birational rigidity and K-stability of Fano hypersurfaces with ordinary double points

Algebraic Geometry 2022-01-19 v4

Abstract

Extending previous results, we prove that for n5n \ge 5 all hypersurfaces of degree n+1n+1 in Pn+1{\mathbb P}^{n+1} with isolated ordinary double points are birational superrigid and K-stable, hence admit a weak K\"ahler--Einstein metric.

Keywords

Cite

@article{arxiv.2111.09911,
  title  = {Birational rigidity and K-stability of Fano hypersurfaces with ordinary double points},
  author = {Tommaso de Fernex},
  journal= {arXiv preprint arXiv:2111.09911},
  year   = {2022}
}

Comments

v4: 15 pages, last version following referee's report - to appear in the special volume on "Rationality problems" of the Rend. Circ. Mat. Palermo