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In this paper we study the systoles of arithmetic hyperbolic 2- and 3-manifolds. Our first result is the construction of infinitely many arithmetic hyperbolic 2- and 3-manifolds which are pairwise noncommensurable, all have the same…

Geometric Topology · Mathematics 2022-04-14 Laurel Heck , Benjamin Linowitz

A mean-convex set can be regarded as a barrier for the construction of minimal surfaces. Namely, if we are given a mean-convex set and a null-homotopic Jordan curve on its boundary, then there exists an embedded minimal disk with boundary…

Differential Geometry · Mathematics 2011-12-20 Emanuele Spadaro

We show that a set of $n$ algebraic plane curves of constant maximum degree can be cut into $O(n^{3/2}\operatorname{polylog} n)$ Jordan arcs, so that each pair of arcs intersect at most once, i.e., they form a collection of pseudo-segments.…

Combinatorics · Mathematics 2018-07-10 Micha Sharir , Joshua Zahl

The minimum-enstrophy theory of Bretherton and Haidvogel postulates that two-dimensional turbulent systems evolve to a state that minimises enstrophy at a fixed energy level. We extend this to the rotating spherical quasi-geostrophic…

Fluid Dynamics · Physics 2026-04-29 Sagy Ephrati , Erik Jansson

We provide linear lower bounds for $f_\rho(L)$, the smallest integer so that every curve on a fixed hyperbolic surface $(S,\rho)$ of length at most $L$ lifts to a simple curve on a cover of degree at most $f_\rho(L)$. This bound is…

Geometric Topology · Mathematics 2015-01-05 Jonah Gaster

We prove that a finite type curve is an $\xi$-asymptotic line (without parabolic points) of a suitable plane field. It is also given an explicit example of a hyperbolic closed finite type $\xi$-asymptotic line. These results obtained here…

Differential Geometry · Mathematics 2019-08-12 Douglas H. da Cruz , Ronaldo A. Garcia

We prove: a properly embedded, genus-one minimal surface that is asymptotic to a helicoid and that contains two straight lines must intersect that helicoid precisely in those two lines. In particular, the two lines divide the surface into…

Differential Geometry · Mathematics 2010-06-08 David Hoffman , Brian White

We prove that a graph G is asymptotically isomorphic to the ray if and only if G is uniformly spherically bounded and is of bounded local degrees. This problem arouse in combinatorics and was posed in [3] (Problem 10.1).

Geometric Topology · Mathematics 2011-08-23 Oleksii Kuchaiev , Anastasiia Tsvietkova

In this paper we consider the H\'enon problem in the ball with Dirichlet boundary conditions. We study the asymptotic profile of radial solutions and then deduce the exact computation of their Morse index when the exponent $p$ is close to…

Analysis of PDEs · Mathematics 2020-07-01 Anna Lisa Amadori

In this paper we prove an asymptotically sharp Bernstein-type inequality for polynomials on analytic Jordan arcs. Also a general statement on mapping of a domain bounded by finitely many Jordan curves onto a complement to a system of the…

Complex Variables · Mathematics 2015-06-05 Sergei Kalmykov , Béla Nagy

The asymptotic solution for the Painleve-2 equation with small parameter is considered. The solution has algebraic behavior before point $t_*$ and fast oscillating behavior after the point $t_*$. In the transition layer the behavior of the…

solv-int · Physics 2009-09-25 O. M. Kiselev

We consider a Plateau problem in codimension $1$ in the non-parametric setting. A Dirichlet boundary datum is given only on part of the boundary $\partial \Omega$ of a bounded convex domain $\Omega\subset\mathbb{R}^2$. Where the Dirichlet…

Analysis of PDEs · Mathematics 2022-01-19 Giovanni Bellettini , Roberta Marziani , Riccardo Scala

We prove that simple, thick hyperbolic P-manifolds of dimension >2 exhibit Mostow rigidity. We also prove a quasi-isometry rigidity result for the fundamental groups of simple, thick hyperbolic P-manifolds of dimension >2. The key tool in…

Geometric Topology · Mathematics 2007-05-23 J. -F. Lafont

Let $\Omega$ be a planar Jordan domain. We consider double-dome-like surfaces $\Sigma$ defined by graphs of functions of $dist( \cdot ,\partial \Omega)$ over $\Omega$. The goal is to find the right conditions on the geometry of the base…

Metric Geometry · Mathematics 2017-07-03 Vyron Vellis , Jang-Mei Wu

We develop a min-max theory for asymptotically conical self-expanders of mean curvature flow. In particular, we show that given two distinct strictly stable self-expanders that are asymptotic to the same cone and bound a domain, there…

Differential Geometry · Mathematics 2020-04-01 Jacob Bernstein , Lu Wang

We study curved isotropic cosmologies filled with two interacting fluids near their time singularities. We find that a number of these universes asymptote to flat limits in the sense that their asymptotic properties become indistinguishable…

General Relativity and Quantum Cosmology · Physics 2013-10-30 Spiros Cotsakis , Georgia Kittou

We solve an asymptotic variant of a smooth version of the $A_n$-realization problem for plane curves. As an application, we determine the cobordism distance between torus links of type $T(d,d)$ and $T(2,N)$ up to an error of at most $3d$.…

Geometric Topology · Mathematics 2023-03-28 Sebastian Baader , Peter Feller

In this paper, we introduce the notion of infinity branches as well as approaching curves. We present some properties which allow us to obtain an algorithm that compares the behavior of two implicitly defined algebraic plane curves at the…

Algebraic Geometry · Mathematics 2014-10-21 A. Blasco , S. Perez-Diaz

Symplectic Field Theory studies J-holomorphic curves in almost complex manifolds with cylindrical ends. One natural generalization is to replace 'cylindrical' by 'asymptotically cylindrical'. In this article, we generalize the asymptotic…

Symplectic Geometry · Mathematics 2016-01-20 Erkao Bao

In this paper, we study a Bahri-Brezis type problem on a compact 3-dimensional asymptotically hyperbolic manifold. Using the celebrated Algebraic Topological argument of Bahri-Coron, we show the existence of at least one solution under the…

Analysis of PDEs · Mathematics 2023-06-14 Mohammed Aldawood