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In this paper we focus on various aspects of singular complex plane curves, mostly in the context of their homological properties and the associated combinatorial structures. We formulate some challenging open problems that can point to new…

Algebraic Geometry · Mathematics 2026-03-26 Michael Cuntz , Piotr Pokora

In this work we study the affine principal lines of surfaces in 3-space. We consider the binary differential equation of the affine curvature lines and obtain the topological models of these curves near the affine umbilic points (elliptic…

Differential Geometry · Mathematics 2020-01-24 Martín Barajas S. , Marcos Craizer , Ronaldo Garcia

This is a chapter of a forthcoming Lecture Notes in Mathematics "Modern Approaches to Discrete Curvature" edited by L. Najman and P. Romon. It provides a survey on geometric and spectral consequences of curvature bounds. The geometric…

Metric Geometry · Mathematics 2016-12-28 Matthias Keller

In this paper, we study unirational differential curves and the corresponding differential rational parametrizations. We first investigate basic properties of proper differential rational parametrizations for unirational differential…

Algebraic Geometry · Mathematics 2020-01-27 Lei Fu , Wei Li

A connection is established between the soliton equations and curves moving in a three dimensional space $V_{3}$. The sign of the self-interacting terms of the soliton equations are related to the signature of $V_{3}$. It is shown that…

solv-int · Physics 2009-10-31 Metin Gurses

We show the existence of 112 non-singular rational curves on the supersingular K3 surface with Artin invariant 1 in characteristic 3 by several ways. Using these rational curves, we have a $(16)_{10}$-configuration and a $(280_{4},…

Algebraic Geometry · Mathematics 2011-07-11 Toshiyuki Katsura , Shigeyuki Kondo

We consider the space $\mathcal R_{g,S_3}^{S_3}$ of curves with a connected $S_3$-cover, proving that for any odd genus $g\geq 13$ this moduli is of general type. Furthermore we develop a set of tools that are essential in approaching the…

Algebraic Geometry · Mathematics 2021-07-23 Mattia Galeotti

We give a sharp lower bound on the area of the domain enclosed by an embedded curve lying on a two-dimensional sphere, provided that geodesic curvature of this curve is bounded from below. Furthermore, we prove some dual inequalities for…

Differential Geometry · Mathematics 2016-05-31 Alexander Borisenko , Kostiantyn Drach

We survey some of the state of the art regarding singularities in Lagrangian mean curvature flow. Some open problems are suggested at the end.

Differential Geometry · Mathematics 2010-12-10 André Neves

We give existence results for solutions of the prescribed scalar curvature equation on $S^3$, when the curvature function is a positive Morse function and satisfies an index-count condition.

Differential Geometry · Mathematics 2008-09-01 Matthias Schneider

In this paper, we investigate and characterise an arbitrary admissible curve in terms of its curvature functions in the pseudo-Galilean space $G_{1}^{4}$% . We also give some special curves in four-dimensional pseudo-Galilean space and…

Differential Geometry · Mathematics 2025-09-30 Fatma Almaz , Handan Oztekin

We classify the analytic germs of isolated Gorenstein curve singularities of genus three, and relate them to the connected components of strata of abelian differentials.

Algebraic Geometry · Mathematics 2024-02-23 Luca Battistella

We calculate the automorphism group of the Kummer surface associated with a curve of genus 2 or the product of two elliptic curves in characteristic two under the assumption that the Kummer surface is a $K3$ surface. Moreover we discuss the…

Algebraic Geometry · Mathematics 2025-12-24 Shigeyuki Kondo , Shigeru Mukai

We derive Frenet-type results and invariants of spatial curves immersed in $3$-dimensional generalized Minkowski spaces, i.e., in linear spaces which satisfy all axioms of finite dimensional real Banach spaces except for the symmetry axiom.…

Differential Geometry · Mathematics 2020-01-07 Vitor Balestro , Horst Martini , Makoto Sakaki

We study harmonic maps from a 3-manifold with boundary to $\mathbb{S}^1$ and prove a special case of dihedral rigidity of three dimensional cubes whose dihedral angles are $\pi / 2$. Furthermore we give some applications to mapping torus…

Differential Geometry · Mathematics 2021-06-08 Xiaoxiang Chai , Inkang Kim

In this note we give a summary of some elementary results in the theory of super Riemann surfaces (SUSY curves).

Algebraic Geometry · Mathematics 2013-06-11 R. Fioresi , S. D. Kwok

We study a special Teichmueller curve in the moduli space of curves of genus 3 that is intersected by infinitely many other Teichmueller curves. The Veech group of the underlying translation surface is SL_2(Z). All occurring Teichmueller…

Algebraic Geometry · Mathematics 2007-05-23 Frank Herrlich , Gabriela Schmithuesen

Let W be the germ of a smooth complex surface around an exceptional curve and let E be a rank 2 vector bundle on W. We study the cohomological properties of a finite sequence $E_i, 1 \leq i \leq t$ of rank 2 vector bundles canonically…

Algebraic Geometry · Mathematics 2007-05-23 Edoardo Ballico , Elizabeth Gasparim

In this study, we consider curves of generalized AW(k)-type of Euclidean n-space. We give curvature conditions of these kind of curves.

Differential Geometry · Mathematics 2021-03-02 Kadri Arslan , Saban Guvenc

For singular corank 1 surfaces in $\mathbb R^3$ we introduce a distinguished normal vector called the axial vector. Using this vector and the curvature parabola we define a new type of curvature called the axial curvature, which generalizes…

Differential Geometry · Mathematics 2019-11-21 Raúl Oset Sinha , Kentaro Saji