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In this paper, we introduce a new auxiliary function, and establish the interior $C^2$ estimate for prescribed Gauss curvature equation in dimension two.

Analysis of PDEs · Mathematics 2016-04-11 Chuanqiang Chen , Fei Han , Qianzhong Ou

In this article we prove the global existence of a unique strong solution to the initial boundary-value problem for a fourth-order exponential PDE. The equation we study was originally proposed to study the evolution of crystal surfaces,…

Analysis of PDEs · Mathematics 2022-06-29 Brock C. Price , Xiangsheng Xu

This is to review some recent progress in PDE. The emphasis is on (energy) supercritical nonlinear Schr\"odinger equations. The methods are applicable to other nonlinear equations.

Analysis of PDEs · Mathematics 2010-09-07 Wei-Min Wang

We give some estimate of type sup*inf for scalar curvature type equations.

Analysis of PDEs · Mathematics 2013-06-04 Samy Skander Bahoura

In this letter we introduce the non-linear partial differential equation (PDE) $\partial^2_{\tau} \pi \propto (\vec\nabla \pi)^2$ showing a new type of instability. Such equations appear in the effective field theory (EFT) of dark energy…

Cosmology and Nongalactic Astrophysics · Physics 2023-05-23 Farbod Hassani , Pan Shi , Julian Adamek , Martin Kunz , Peter Wittwer

THis work is a survey of a few nonlinear PDE based models in image restoring.

Analysis of PDEs · Mathematics 2014-10-15 Viorel Barbu

We discuss some open problems and recent progress related to the 4th order Paneitz operator and Q curvature in dimensions other than 4.

Differential Geometry · Mathematics 2015-09-17 Fengbo Hang , Paul C. Yang

We present a continuous/discontinuous Galerkin method for approximating solutions to a fourth order elliptic PDE on a surface embedded in $\mathbb{R}^3$. A priori error estimates, taking both the approximation of the surface and the…

Numerical Analysis · Mathematics 2017-06-23 Karl Larsson , Mats G. Larson

On Riemannian manifolds of dimension 4, for prescribed scalar curvature equation, under lipschitzian condition on the prescribed curvature, we have an uniform estimate for the solutions of the equation if we control their minimas.

Analysis of PDEs · Mathematics 2007-05-23 Samy Skander Bahoura

In this paper, we derive apriori estimates for constant scalar curvature K\"ahler metrics on a compact K\"ahler manifold. We show that higher order derivatives can be estimated in terms of a $C^0$ bound for the K\"ahler potential. We also…

Differential Geometry · Mathematics 2017-12-20 Xiuxiong Chen , Jingrui Cheng

A method to construct the exact solution of the PDE is presents, which combines the two kind methods(the nonlinear transformation and RQ(Reduction the PDE to a Quadrature problem) method).The nonlinear diffusion equation is chosen to…

Chaotic Dynamics · Physics 2007-05-23 Yang Lei , Liu Jianbin , Yang Kongqing

We provide an explicit resolution of the Abreu equation on convex labeled quadrilaterals. This confirms a conjecture of Donaldson in this particular case and implies a complete classification of the explicit toric K\"ahler-Einstein and…

Differential Geometry · Mathematics 2011-12-15 Eveline Legendre

This paper completes a programme to determine which toric surfaces admit Kahler metrics of constant scalar curvature/

Differential Geometry · Mathematics 2008-05-02 S. K. Donaldson

We apply a version of the dressing method to a system of four dimensional nonlinear Partial Differential Equations (PDEs), which contains both Pohlmeyer equation (i.e. nonlinear PDE integrable by the Inverse Spectral Transform Method) and…

Exactly Solvable and Integrable Systems · Physics 2015-05-13 A. I. Zenchuk

This paper concerns local gradient estimates to solutions of general conformally invariant fully nonlinear elliptic equations of second order.

Analysis of PDEs · Mathematics 2007-08-21 Yanyan Li

In this paper, we give several new approaches to study interior estimates for a class of fourth order equations of Monge-Amp\`ere type. First, we prove interior estimates for the homogeneous equation in dimension two by using the partial…

Analysis of PDEs · Mathematics 2022-08-03 Ling Wang , Bin Zhou

We derive integral and sup-estimates for the curvature of stably marginally outer trapped surfaces in a sliced space-time. The estimates bound the shear of a marginally outer trapped surface in terms of the intrinsic and extrinsic curvature…

General Relativity and Quantum Cosmology · Physics 2007-05-23 Lars Andersson , Jan Metzger

In this paper we introduce higher extremal Kahler metrics. We provide an example of the same on a minimal ruled surface. We also prove a perturbation result that implies that there are non-trivial examples of higher constant scalar…

Differential Geometry · Mathematics 2017-09-29 Vamsi Pritham Pingali

We will show that the same type of estimates known for the fundamental solutions for scalar parabolic equations with smooth enough coefficients hold for the first order derivatives of fundamental solution with respect to space variables of…

Analysis of PDEs · Mathematics 2009-06-25 Michele Di Cristo , Kyoungsun Kim , Gen Nakamura

We establish a priori interior curvature estimates for the special Lagrangian curvature equations in both the critical phase and convex case. Additionally, we prove a priori interior gradient estimates for any constant phases.

Analysis of PDEs · Mathematics 2024-07-23 Guohuan Qiu , Xingchen Zhou