Search arXivSearch

arXiv · 2005.10546

Homologically visible closed geodesics on complete surfaces

Abstract

In this article, we give multiple situations when having one or two geometrically distinct closed geodesics on a complete Riemannian cylinder $M\simeq S^1\times\mathbb{R}$ or a complete Riemannian plane $M\simeq\mathbb{R}^2$ leads to having infinitely many geometrically distinct closed geodesics. In particular, we prove that any complete cylinder with isolated closed geodesics has zero, one or infinitely many homologically visible closed geodesics; this answers a question of Alberto Abbondandolo.

Explore related subjects

Keep this discovery

Explore connections, maps & timelines

BibTeXRIS

Simon Allais, Tobias Soethe. 2020-05-21. Homologically visible closed geodesics on complete surfaces. https://doi.org/10.1142/s1793525321500692

Cite the original work for its findings. Save a collection to share your selection of sources.

KEEP EXPLORING

Related papers

On vector-valued multisymplectic forms

We obtain a standard local presentation for a vector-valued multisymplectic form on a smooth manifold, generalizing the known proof for polysymplectic forms. We show that vector-valued multisymplectic forms on a finite-dimensional real vector space form a non-unital operad. We prove an entropy inequality for partial compositions.

math.DG

Scalar curvature growth on nonnegatively curved three-manifolds

Let $(M^3,g)$ be a complete, connected, noncompact Riemannian three-manifold without boundary and with nonnegative sectional curvature. We prove that its scalar-curvature integral over geodesic balls, divided by the radius, has a limit. In the one-ended case, \[ \lim_{r\to\infty}\frac1r\int_{B_p(r)}\operatorname{Scal}\,d V =8π\bigl(χ(M)-V_M\bigr)\le8π(1-V_M), \] where $V_M$ is the asymptotic volume ratio. In the one-ended case, we show that $χ(M)\in\{0,1\}$. Thus positive asymptotic volume ratio gives the value $8π(1-V_M)$, while in the collapsed case the value is determined by the topology of the end. No pole or scalar-curvature bound is assumed. The proof combines separate smooth approximations of the Busemann and distance functions, integrable negative curvature errors, and a determinant estimate on the level surfaces. An averaged boundary estimate then gives convergence of the integrated extrinsic curvature. In the two-ended case, the splitting theorem gives the exact limit $8πχ(N)$ for the compact surface factor $N$. The one-ended upper bound is attained for every prescribed asymptotic volume ratio in $[0,1]$, and the two-ended bound is also sharp.

math.DG

Some results on weighted p-harmonic $\ell$-forms on weighted manifolds

Basing on new curvature conditions for the Bochner technique of Petersen-Wrink in \cite{PW21}, in this paper, we give some vanishing properties for weighted $L^Q$ $p$-harmonic $\ell$-forms on weighted manifolds, where $p>1, Q>p-1.$ These results generalize some previous theorems for $L^Q$ harmonic $\ell$-forms of Dung-Dung-Hung on the paper \cite{DDH25}.

math.DG