English

Optimal bounds in Bend-and-Break

Algebraic Geometry 2026-01-09 v2

Abstract

We improve the Bend-and-Break result of Miyaoka and Mori by establishing the optimal degree bound. Our result also yields optimal bounds on lengths of extremal rays of log canonical pairs.

Keywords

Cite

@article{arxiv.2509.08065,
  title  = {Optimal bounds in Bend-and-Break},
  author = {Eric Jovinelly and Brian Lehmann and Eric Riedl},
  journal= {arXiv preprint arXiv:2509.08065},
  year   = {2026}
}

Comments

4 pages, attributions updated

R2 v1 2026-07-01T05:29:02.899Z