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Let $(M,g)$ be a compact Riemannian manifold with non-empty boundary. Provided $f$ an isoparametric function of $(M,g)$ we prove existence results for positive solutions of the Yamabe equation that are constant along the level sets of $f$.…

Differential Geometry · Mathematics 2022-11-30 Guillermo Henry , Juan Zuccotti

We give sufficient and "almost" necessary conditions for the prescribed scalar curvature problems within the conformal class of a Riemannian metric $ g $ for both closed manifolds and compact manifolds with boundary, including the…

Differential Geometry · Mathematics 2023-01-04 Jie Xu

Let $(M,g)$ be a smooth compact Riemannian manifold of dimension $n$ with smooth boundary $\partial M$, admitting a scalar-flat conformal metric. We prove that the supremum of the isoperimetric ratio over the scalar-flat conformal class is…

Differential Geometry · Mathematics 2019-10-04 Xuezhang Chen , Tianling Jin , Yuping Ruan

We consider the problem of minimizing the Willmore energy in the class of conformal immersions of a given closed, genus p Riemann surface into R^n for n=3,4. We prove existence of a smooth minimizer, provided that the infimum is below a…

Differential Geometry · Mathematics 2010-10-01 Ernst Kuwert , Reiner Schätzle

We start by taking the analytical approach to discuss how the minimizer of Yamabe functional provides constant scalar curvature and its relationship with the Sobolev Space $W^{1,2}.$ Then, after demonstrating the importance of the sphere…

Differential Geometry · Mathematics 2024-12-09 Aoran Chen

The study of stable minimal surfaces in Riemannian $3$-manifolds $(M, g)$ with non-negative scalar curvature has a rich history. In this paper, we prove rigidity of such surfaces when $(M, g)$ is asymptotically flat and has horizon…

Differential Geometry · Mathematics 2016-12-21 Alessandro Carlotto , Otis Chodosh , Michael Eichmair

We define a formal Riemannian metric on a given conformal class of metrics on a closed Riemann surface. We show interesting formal properties for this metric, in particular the curvature is nonpositive and the Liouville energy is…

Differential Geometry · Mathematics 2015-07-20 Matthew J. Gursky , Jeffrey Streets

For a compact Riemannian manifold $(M,g)$ with boundary $\partial M$, the Diri\-chl\-et-to-Neumann operator $\Lambda_g:C^\infty(\partial M)\longrightarrow C^\infty(\partial M)$ is defined by $\Lambda_gf=\left.\frac{\partial…

Differential Geometry · Mathematics 2025-01-30 Vladimir A. Sharafutdinov

We prove that for any open Riemann surface $M$ and any non constant harmonic function $h:M \to \mathbb{R},$ there exists a complete conformal minimal immersion $X:M \to \mathbb{R}^3$ whose third coordinate function coincides with $h.$ As a…

Differential Geometry · Mathematics 2009-10-23 Antonio Alarcon , Isabel Fernandez , Francisco J. Lopez

Conformal geodesics are distinguished curves on a conformal manifold, loosely analogous to geodesics of Riemannian geometry. One definition of them is as solutions to a third order differential equation determined by the conformal…

Differential Geometry · Mathematics 2021-02-09 Joel Fine , Yannick Herfray

A locally conformally product (LCP) structure on compact manifold $M$ is a conformal structure $c$ together with a closed, non-exact and non-flat Weyl connection $D$ with reducible holonomy. Equivalently, an LCP structure on $M$ is defined…

Differential Geometry · Mathematics 2024-06-24 Brice Flamencourt

We define a new formal Riemannian metric on a conformal classes of four-manifolds in the context of the $\sigma_2$-Yamabe problem. Exploiting this new variational structure we show that solutions are unique unless the manifold is…

Differential Geometry · Mathematics 2018-10-03 Matthew J. Gursky , Jeffrey Streets

We consider a four dimensional Riemannian manifold M with a metric g and affinor structure q. The local coordinates of these tensors are circulant matrices. Their first orders are (A, B, C, B), A, B, C\in FM and (0, 1, 0, 0), respectively.…

Differential Geometry · Mathematics 2014-03-25 Iva Dokuzova

This paper connects nonpositive sectional curvature of a Riemannian manifold with the displacement convexity of the variance functional on the space $P(M)$ of probability measures over $M$. We show that $M$ has nonpositive sectional…

Differential Geometry · Mathematics 2015-03-24 Young-Heon Kim , Brendan Pass

In this paper, we investigate critical quasilinear elliptic partial differential equations on a complete Riemannian manifold with nonnegative Ricci curvature. By exploiting a new and sharp nonlinear Kato inequality and establishing some…

Differential Geometry · Mathematics 2025-03-14 Linlin Sun , Youde Wang

In the present paper we prove Liouville-type theorems: non-existence theorems for conformal mappings of complete Riemannian manifolds. In addition, we give an application of these results to the theory of conharmonic transformations. A part…

Differential Geometry · Mathematics 2016-08-24 Sergey E. Stepanov , Irina I. Tsyganok

For a given finite subset $S$ of a compact Riemannian manifold $(M,g)$ whose Schouten curvature tensor belongs to a given cone, we establish a necessary and sufficient condition for the existence and uniqueness of a conformal metric on $M…

Analysis of PDEs · Mathematics 2021-07-22 YanYan Li , Luc Nguyen

Our goal here is to present a detailed analysis connecting the anomalous scaling properties of 2D simplicial quantum gravity to the geometry of the moduli space M_{g,N} of genus g Riemann surfaces with N punctures. In the case of pure…

Mathematical Physics · Physics 2007-05-23 Mauro Carfora , Annalisa Marzuoli

In this work we study the asymptotics of the fractional Laplacian as $s\to 0^+$ on any complete Riemannian manifold $(M,g)$, both of finite and infinite volume. Surprisingly enough, when $M$ is not stochastically complete this asymptotics…

Differential Geometry · Mathematics 2024-05-24 Michele Caselli , Luca Gennaioli

We find analogues of the Willmore functional for each of the Thurston geometries with 4-dimensional isometry group such that the CMC-spheres in these geometries are critical points of these functionals.

Differential Geometry · Mathematics 2021-08-18 Dmitry Berdinsky , Yuri Vyatkin