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In this paper we prove that a complete minimal surface immersed in H^2xR, with finite total curvature and two ends, each one asymptotic to a vertical geodesic plane, must be a horizontal catenoid. Moreover, we give a geometric description…

Differential Geometry · Mathematics 2015-02-11 Laurent Hauswirth , Barbara Nelli , Ricardo Sa Earp , Eric Toubiana

We study compact stable embedded minimal surfaces whose boundary is given by two collections of closed smooth Jordan curves in close planes of Euclidean 3-space. Our main result is a classification of these minimal surfaces, under certain…

Differential Geometry · Mathematics 2007-05-23 Rosanna Pearlstein

A rational elliptic surface with section is a smooth, rational, complex, projective surface $\mathcal{X}$ that admits a relatively minimal fibration $f: \mathcal{X}\longrightarrow \bbP^1$ such that its general fibre is a smooth irreducible…

Algebraic Geometry · Mathematics 2026-02-13 Ciro Ciliberto , Antonella Grassi , Rick Miranda , Alessandro Verra , Aline Zanardini

We obtain structural results on translational tilings of periodic functions in $\mathbb{Z}^d$ by finite tiles. In particular, we show that any level one tiling of a periodic set in $\mathbb{Z}^2$ must be weakly periodic (the disjoint union…

Classical Analysis and ODEs · Mathematics 2021-09-27 Rachel Greenfeld , Terence Tao

We call a projective surface $X$ mixed quasi-\'etale quotient if there exists a curve $C$ of genus $g(C)\geq 2$ and a finite group $G$ that acts on $C\times C$ exchanging the factors such that $X=(C\times C)/G$ and the map $C\times C…

Algebraic Geometry · Mathematics 2013-04-24 Davide Frapporti

We prove that given a Hitchin representation in a real split rank 2 group $\mathsf G_0$, there exists a unique equivariant minimal surface in the corresponding symmetric space. As a corollary, we obtain a parametrization of the Hitchin…

Differential Geometry · Mathematics 2016-07-06 François Labourie

We show that abelian surfaces (and consequently curves of genus 2) over totally real fields are potentially modular. As a consequence, we obtain the expected meromorphic continuation and functional equations of their Hasse--Weil zeta…

Number Theory · Mathematics 2021-11-30 George Boxer , Frank Calegari , Toby Gee , Vincent Pilloni

We introduce the notion of twisted gravitating vortex on a compact Riemann surface. If the genus of the Riemann surface is greater than 1 and the twisting forms have suitable signs, we prove an existence and uniqueness result for suitable…

Differential Geometry · Mathematics 2020-10-07 Chengjian Yao

We present a computational method for detecting highly singular members in families of algebraic varieties. Applying this approach to a family of numerical Godeaux surfaces, we obtain explicit examples with many singularities. In…

Algebraic Geometry · Mathematics 2025-09-11 Carlos Rito , Christian Gleissner , Noah Ruhland

We present an extension of several results on pairs and varieties to foliated surface pairs. We prove the boundedness of local complements, the local index theorem, and the uniform boundedness of minimal log discrepancies (mlds), as well as…

Algebraic Geometry · Mathematics 2024-06-07 Jihao Liu , Fanjun Meng , Lingyao Xie

For a family of periodic SEIRS models with general incidence, we prove the existence of at least one endemic periodic orbit when R_0>1. Additionally, we prove the existence of a unique disease-free periodic orbit, that is globally…

Dynamical Systems · Mathematics 2015-12-07 César M. Silva , Joaquim P. Mateus

In [1], a new quasi-Hermitian variety $\mathcal{H}_\varepsilon^r$ in $\mathrm{PG}(r, q^2)$, with $q = 2^e$ and $e \geq 3$ an odd integer, was constructed. The variety depends on a primitive element $\varepsilon$ of the underlying field…

Combinatorics · Mathematics 2025-08-07 Angela Aguglia , Alessandro Montinaro

Surfaces of amplitude 1 in ordinary projective space are of general type, but this need not be the case in weighted projective spaces. Indeed, there are 4 classes of quasi-smooth weighted hypersurfaces in $\mathbf{P}(1,2,a,b)$ of amplitude…

Algebraic Geometry · Mathematics 2024-09-10 Gregory Pearlstein , Chris Peters , Appendix C by Wim Nijgh

We study deformations of a genus one Riemann surface and of a second order Abelian differential on the surface which preserve the periods of the differential with respect to a chosen canonical homology basis of the surface. We call these…

Algebraic Geometry · Mathematics 2025-12-09 Vladimir Dragovic , Vasilisa Shramchenko

Unimodal (i.e. single-humped) permutations may be decomposed into a product of disjoint cycles. Some enumerative results concerning their cyclic structure -- e.g. 2/3 of them contain fixed points -- are given. We also obtain in effect a…

Dynamical Systems · Mathematics 2007-05-23 T. Gannon

In this paper, we discuss complete minimal immersions in $\mathbb{R}^N$($N\geq4$) with finite total curvature and embedded planar ends. First, we prove nonexistence for the following cases: (1) genus 1 with 2 embedded planar ends, (2) genus…

Differential Geometry · Mathematics 2021-01-19 Jaehoon Lee

Let $\Lambda$ be a finite dimensional algebra over an algebraically closed field, and ${\Bbb S}$ a finite sequence of simple left $\Lambda$-modules. In [6, 9], quasiprojective algebraic varieties with accessible affine open covers were…

Representation Theory · Mathematics 2014-07-10 Klaus Bongartz , Birge Huisgen-Zimmermann

Given an arithmetic surface and a positive hermitian line bundle over it, we bound the successive minima of the lattice of global sections of this line bundle. Our method combines a result of C.Voisin on secant varieties of projective…

Algebraic Geometry · Mathematics 2016-09-07 Christophe Soule'

We study translation covers of several triply periodic polyhedral surfaces that are intrinsically Platonic. We describe their affine symmetry groups and compute the quadratic asymptotics for counting saddle connections and cylinders,…

Dynamical Systems · Mathematics 2021-03-05 Jayadev S. Athreya , Dami Lee

A monoid hypersurface is an irreducible hypersurface of degree d which has a singular point of multiplicity d-1. Any monoid hypersurface admits a rational parameterization, hence is of potential interest in computer aided geometric design.…

Algebraic Geometry · Mathematics 2007-05-23 Pål Hermunn Johansen , Magnus Løberg , Ragni Piene
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