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Computing the embedding distribution of a given graph is a fundamental question in topological graph theory. In this article, we extend our viewpoint to a sequence of graphs and consider their asymptotic embedding distributions, which are…

Combinatorics · Mathematics 2025-07-22 Yichao Chen , Wenjie Fang , Zhicheng Gao , Jinlian Zhang

First we solve the problem of finding minimal degree families on toric surfaces by reducing it to lattice geometry. Then we describe how to find minimal degree families on, more generally, rational complex projective surfaces.

Algebraic Geometry · Mathematics 2021-03-09 Niels Lubbes , Josef Schicho

A smooth Hermitian surface $X$ is a projective surface isomorphic to the Fermat surface of degree $q+1$ in positive characteristic. We study incidence relations of the rational curves of degree $q+1$ contained in $X$, and show that such…

Algebraic Geometry · Mathematics 2026-02-12 Norifumi Ojiro

In this article, we consider an infinite family of normal surface singularities with an integral homology sphere link which is related to the family of space monomial curves with a plane semigroup. These monomial curves appear as the…

Algebraic Geometry · Mathematics 2020-10-29 Jorge Martín-Morales , Lena Vos

We study the family of irreducible curves with $\delta$ nodes belonging to a free linear system $|C|$ with smooth general member on a surface $S$ such that $|K_S|$ is ample. Under the assumption that $C$ is numerically equivalent to $pK_S$,…

alg-geom · Mathematics 2008-02-03 Luca Chiantini , Edoardo Sernesi

We give a survey on the development of the study of the asymptotic Dirichlet problem for the minimal surface equation on Cartan-Hadamard manifolds. Part of this survey is based on the introductory part of the doctoral dissertation of the…

Differential Geometry · Mathematics 2021-07-13 Esko Heinonen

We prove the existence of solutions to the asymptotic Plateau problem for hypersurfaces of prescribed mean curvature in Cartan-Hadamard manifolds $N$. More precisely, given a suitable subset $L$ of the asymptotic boundary of $N$ and a…

Differential Geometry · Mathematics 2023-04-03 Jean-Baptiste Casteras , Ilkka Holopainen , Jaime B. Ripoll

This work is on surfaces with a constant ratio of principal curvatures. These CRPC surfaces generalize minimal surfaces but are much more challenging to construct. We propose a construction of a family of such surfaces containing a given…

Differential Geometry · Mathematics 2025-10-17 Mikhail Skopenkov , Khusrav Yorov

We consider the problem of finding $1$-parameter families of elliptic curves whose root number does not average to zero as the parameter varies in $\mathbb{Z}$. We classify all such families when the degree of the coefficients (in the…

Number Theory · Mathematics 2018-06-13 Sandro Bettin , Chantal David , Christophe Delaunay

We classify Riemannian surfaces admitting associated families in three dimensional homogeneous spaces with four-dimensional isometry groups and in a wide family of (semi-Riemannian) warped products, with an extra natural condition (namely,…

Differential Geometry · Mathematics 2019-02-18 Marie-Amélie Lawn , Miguel Ortega

We define a cone curve to be a reduced sextic space curve which lies on a quadric cone and does not go through the vertex. We classify families of bitangent planes of cone curves. The methods we apply can be used for any space curve with…

Algebraic Geometry · Mathematics 2021-03-09 Niels Lubbes

We study the behaviors of the relative Bergman kernel metrics on holomorphic families of degenerating hyperelliptic Riemann surfaces and their Jacobian varieties. Near a node or cusp, we obtain precise asymptotic formulas with explicit…

Complex Variables · Mathematics 2022-11-29 Robert Xin Dong

In this paper, we investigate the ruled surfaces generated by a straight line according to rotation minimizing frame (RMF). Using this frame of a straight line, we obtained the necessary and sufficient conditions when the ruled surface is…

Differential Geometry · Mathematics 2014-07-02 Fatma Güler , Emin Kasap

A minimal family of curves on an embedded surface is defined as a 1-dimensional family of rational curves of minimal degree, which cover the surface. We classify such minimal families using constructive methods. This allows us to compute…

Algebraic Geometry · Mathematics 2021-03-09 Niels Lubbes

In this paper we study slant null curves with respect to the original parameter on 3-dimensional normal almost contact B-metric manifolds with parallel Reeb vector field. We prove that for non-geodesic such curves there exists a unique…

Differential Geometry · Mathematics 2015-11-26 Galia Nakova , Hristo Manev

We show that several families of asymptotically rigid mapping class groups arise as explicit quotients of the fundamental group of a graph of groups, with mapping class groups as vertex and edge stabilizers. Using this description, and…

Geometric Topology · Mathematics 2026-03-27 Sergio Domingo-Zubiaga

Extending the results of an earlier article we give a complete description of the asymptotically flat, conformally non-flat, static vacuum data which admit non-trivial, asymptotically smooth conformal mappings onto other such data. These…

General Relativity and Quantum Cosmology · Physics 2008-11-26 Helmut Friedrich

Though the uniformization theorem guarantees an equivalence of Riemann surfaces and smooth algebraic curves, moving between analytic and algebraic representations is inherently transcendental. Our analytic curves identify pairs of circles…

Geometric Topology · Mathematics 2024-01-26 Samantha Fairchild , Ángel David Ríos Ortiz

Considering the tangent plane at a point to a surface in the four-dimensional Euclidean space, we find an invariant of a pair of two tangents in this plane. If this invariant is zero, the two tangents are said to be conjugate. When the two…

Differential Geometry · Mathematics 2010-02-22 Georgi Ganchev , Velichka Milousheva

Let $\Sigma$ be a hyperbolic surface. We study the set of curves on $\Sigma$ of a given type, i.e. in the mapping class group orbit of some fixed but otherwise arbitrary $\gamma_0$. For example, in the particular case that $\Sigma$ is a…

Geometric Topology · Mathematics 2015-08-11 Viveka Erlandsson , Juan Souto