English

C^1-umbilics with arbitrarily high indices

Differential Geometry 2017-04-19 v1

Abstract

In this paper, the existence of C^1-umbilics with arbitrarily high indices is shown. This implies that more than C^1-regularity is required to prove Loewner's conjecture.

Cite

@article{arxiv.1508.03685,
  title  = {C^1-umbilics with arbitrarily high indices},
  author = {Naoya Ando and Toshifumi Fujiyama and Masaaki Umehara},
  journal= {arXiv preprint arXiv:1508.03685},
  year   = {2017}
}
R2 v1 2026-06-22T10:34:18.996Z