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Given a complete Riemannian metric of nonnegative scalar curvature on $\Sigma \times (-\infty, 0 ] $, where $\Sigma$ denotes a $2$-sphere, we exhibit conditions that imply the existence of a closed minimal surface homologous to the…

Differential Geometry · Mathematics 2025-12-22 Pengzi Miao , Sehong Park

We prove the Halo conjecture on the geometry of the eigencurve over the boundary of the weight space, predicted by Coleman-Mazur and Buzzard-Kilford.

Number Theory · Mathematics 2023-02-17 Hansheng Diao , Zijian Yao

In this paper, we contribute toward a classification of two-variable polynomials by classifying (up to an automorphism of $C^2$) polynomials whose Newton polygon is either a triangle or a line segment. Our classification has several…

Algebraic Geometry · Mathematics 2007-05-23 Vladimir Shpilrain , Jie-Tai Yu

We prove the existence and uniqueness of harmonic maps in degree one homotopy classes of closed, orientable surfaces of positive genus, when the target has conic points with cone angles less than $2\pi$. For a cone point $p$ of cone angle…

Analysis of PDEs · Mathematics 2011-08-02 Jesse Gell-Redman

We consider the space of holomorphic maps from a compact Riemann surface to a projective space blown up at finitely many points. We show that the homology of this mapping space equals that of the space of continuous maps that intersect the…

Algebraic Topology · Mathematics 2025-06-18 Ronno Das , Philip Tosteson

This paper generalizes work of Buzzard and Kilford to the case $p=3$, giving an explicit bound for the overconvergence of the quotient $E_\kappa / V(E_\kappa)$ and using this bound to prove that the eigencurve is a union of countably many…

Number Theory · Mathematics 2013-10-29 David Roe

We establish half-space type results for a class of height-dependent weighted minimal surfaces in $\mathbb{R}^3$, namely critical points of a weighted area functional whose weight depends on the height. When the weight has at most quadratic…

Differential Geometry · Mathematics 2026-01-30 A. L. Martínez-Triviño , J. P. dos Santos , G. Tinaglia

For a family $\mathcal{C}$ of properly embedded curves in the 2-dimensional disk $\mathbb{D}^{2}$ satisfying certain uniqueness properties, we consider convex polygons $P\subset \mathbb{D}^{2}$ and define a metric $d$ on $P$ such that…

Metric Geometry · Mathematics 2023-11-13 Charalampos Charitos , Ioannis Papadoperakis , Georgios Tsapogas

The fine curve graph of a surface is the graph whose vertices are simple closed essential curves in the surface and whose edges connect disjoint curves. In this paper, we prove that the automorphism group of the fine curve graph of a…

Geometric Topology · Mathematics 2025-06-09 Roberta Shapiro , Rohan Wadhwa , Arthur Wang , Yuchong Zhang

We prove the Ingram Conjecture, i.e., we show that the inverse limit spaces of every two tent maps with different slopes in the interval [1, 2] are non-homeomorphic. Based on the structure obtained from the proof, we also show that every…

Dynamical Systems · Mathematics 2014-11-11 M. Barge , H. Bruin , S. Štimac

The goal of this paper is to measure the non-convexity of compact and smooth connected components of real algebraic plane curves. We study these curves first in a general setting and then in an asymptotic one. In particular, we consider…

Algebraic Geometry · Mathematics 2020-08-27 Miruna-Stefana Sorea

Let $M\subset\mathbb{R}^3$ be a properly embedded, connected, complete surface with boundary a convex planar curve $C$, satisfying an elliptic equation $H=f(H^2-K)$, where $H$ and $K$ are the mean and the Gauss curvature respectively -…

Differential Geometry · Mathematics 2025-10-07 Angelo Benedetti

We make some remarks on the existence of a geodesically complete core for any compact non-positively curved space.

Metric Geometry · Mathematics 2007-05-23 Pedro Ontaneda

This paper provides results for eigencurves associated with self-adjoint linear elliptic boundary value problems. The elliptic problems are treated as a general two-parameter eigenproblem for a triple (a, b, m) of continuous symmetric…

Analysis of PDEs · Mathematics 2017-05-22 M. A. Rivas , Stephen B. Robinson

We prove that strong finite total curvature complete hypersurfaces of (n+1)-euclidean space are proper and diffeomorphic to a compact manifold minus finitely many points. With an additional condition, we also prove that the Gauss map of…

Differential Geometry · Mathematics 2015-12-16 Manfredo do Carmo , Maria Fernanda Elbert

In this article, we first show that for all compact Riemannian manifolds with non-empty smooth boundary and dimension at least 3, there exists a metric, pointwise conformal to the original metric, with constant scalar curvature in the…

Differential Geometry · Mathematics 2022-08-25 Jie Xu

We extend the structure theory of Burago--Gromov--Perelman for Alexandrov spaces with curvature bounded below, to the setting of Busemann spaces with non-negative curvature. We prove that any finite-dimensional Busemann space with…

Metric Geometry · Mathematics 2026-04-20 Bang-Xian Han , Liming Yin

We derive a numerical criterion for J-holomorphic curves in 4-dimensional symplectic cobordisms to achieve transversality without any genericity assumption. This generalizes results of Hofer-Lizan-Sikorav and Ivashkovich-Shevchishin to…

Symplectic Geometry · Mathematics 2009-08-16 Chris Wendl

We investigate isoperimetric inequalities for Lipschitz 2-spheres in CAT(0) spaces, proving bounds on the volume of efficient null-homotopies. In one dimension lower, it is known that a quadratic inequality with a constant smaller than…

Metric Geometry · Mathematics 2025-02-06 Cornelia Druţu , Urs Lang , Panos Papasoglu , Stephan Stadler

In this paper we give a new, and shorter, proof of Huber's theorem which affirms that for a connected open Riemann surface endowed with a complete conformal Riemannian metric, if the negative part of its Gaussian curvature has finite mass,…

Differential Geometry · Mathematics 2022-12-16 Chen Zhou