English

Systole and small eigenvalues of hyperbolic surfaces

Differential Geometry 2021-11-18 v1

Abstract

Let SS be a closed orientable hyperbolic surface with Euler characteristicχ\chi, and let λk(S)\lambda_k(S) be the kk-th positive eigenvalue for the Laplacian on SS. According to famous result of Otal and Rosas, λχ>14\lambda_{-\chi}>\frac14. In this article, we prove that if thesystole of SS is greater than 3,46, then λχ1>14\lambda_{-\chi-1}>\frac14.This inequality is also true for geometrically finite orientable hyperbolic surfaces without cusps with the same assumption on the systole.

Keywords

Cite

@article{arxiv.2111.08985,
  title  = {Systole and small eigenvalues of hyperbolic surfaces},
  author = {Pierre Jammes},
  journal= {arXiv preprint arXiv:2111.08985},
  year   = {2021}
}

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in French

R2 v1 2026-06-24T07:41:51.446Z