English

Genus one $H$-surfaces with $k$-ends in $\mathbb{H}^2\times\mathbb{R}$

Differential Geometry 2024-10-30 v2

Abstract

We construct two different families of properly Alexandrov-immersed surfaces in H2×R\mathbb{H}^2\times \mathbb{R} with constant mean curvature 0<H120<H\leq \frac 1 2, genus one and k2k\geq2 ends (k=2k=2 only for one of these families). These ends are asymptotic to vertical HH-cylinders for 0<H<120<H<\frac 1 2. This shows that there is not a Schoen-type theorem for immersed surfaces with positive constant mean curvature in H2×R\mathbb{H}^2\times\mathbb{R}. These surfaces are obtained by means of a conjugate construction.

Keywords

Cite

@article{arxiv.2306.17433,
  title  = {Genus one $H$-surfaces with $k$-ends in $\mathbb{H}^2\times\mathbb{R}$},
  author = {Jesús Castro-Infantes and José S. Santiago},
  journal= {arXiv preprint arXiv:2306.17433},
  year   = {2024}
}

Comments

26 pages, 10 figures. This is the second version

R2 v1 2026-06-28T11:18:39.632Z