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We consider solutions to degenerate anisotropic elliptic equations in order to study their regularity. In particular we establish second-order estimates and enclose regularity results for the stress field. All our results are new even in…

Analysis of PDEs · Mathematics 2025-03-26 Daniel Baratta , Luigi Muglia , Domenico Vuono

We study a notion of finite energy solutions to elliptic systems with power nonlinearities in R^n. We establish sharp pointwise decay estimates for positive and sign-changing solutions. By using these estimates, we obtain symmetry results…

Analysis of PDEs · Mathematics 2024-02-23 Jérôme Vétois

The existence of entire solutions to quasilinear elliptic systems exhibiting both singular and convective reaction terms is discussed. An auxiliary problem, obtained by `freezing' the convection terms and `shifting' the singular ones, is…

Analysis of PDEs · Mathematics 2021-07-14 Umberto Guarnotta

We propose in this paper to study the solutions of some nonlinear elliptic equations with singular potential.

Analysis of PDEs · Mathematics 2015-10-06 Anouar Ben Mabrouk

The existence of a positive entire weak solution to a singular quasi-linear elliptic system with convection terms is established, chiefly through perturbation techniques, fixed point arguments, and a priori estimates. Some regularity…

Analysis of PDEs · Mathematics 2021-02-22 Umberto Guarnotta , Salvatore A. Marano , Abdelkrim Moussaoui

We prove doubling inequalities for solutions of elliptic systems with an iterated Laplacian as diagonal principal part and for solutions of the Lame' system of isotropic linearized elasticity. These inequalities depend on global properties…

Analysis of PDEs · Mathematics 2012-02-27 Giovanni Alessandrini , Antonino Morassi , Edi Rosset , Sergio Vessella

We are concerned with the well-posedness of linear elliptic systems posed on $\mathbb{R}^d$. The concrete problem of interest, for which we require this theory, arises from the linearization of the equations of anisotropic finite…

Analysis of PDEs · Mathematics 2012-04-16 Christoph Ortner , Endre Suli

The paper concerns singular solutions of nonlinear elliptic equations.

Analysis of PDEs · Mathematics 2009-04-21 Luis Caffarelli , YanYan Li , Louis Nirenberg

We prove a general result on the existence of local solutions of any second order quasi-linear elliptic system with arbitrary 1-jet at a point.

Analysis of PDEs · Mathematics 2024-02-01 Yifei Pan , Yu Yan

We have found one of the possible conditions under which the Beltrami equation with degeneration of ellipticity has a continuous solution of the Sobolev class. With some additional requirements, this solution is homeomorphic

Complex Variables · Mathematics 2019-05-27 Evgeny Sevost'yanov

We consider a strongly nonlinear elliptic problem with the homogeneous Dirichlet boundary condition. The growth and the coercivity of the elliptic operator is assumed to be indicated by an inhomogeneous anisotropic $\mathcal{N}$-function.…

Analysis of PDEs · Mathematics 2018-01-24 Miroslav Bulíček , Piotr Gwiazda , Martin Kalousek , Agnieszka Świerczewska-Gwiazda

In this article we study a system of eikonal equations. Our aim is to isolate the solutions which minimise the discontinuity set of the gradient.

Analysis of PDEs · Mathematics 2010-05-20 Thierry Champion , Gisella Croce

Using a mixture of classical and probabilistic techniques we investigate the convexity of solutions to the elliptic pde associated with a certain generalized Ornstein-Uhlenbeck process.

Analysis of PDEs · Mathematics 2014-07-16 Jon Warren

We investigate the homogeneous Dirichlet problem in uniformly convex domains for a large class of degenerate elliptic equations with singular zero order term. In particular we establish sharp existence and uniqueness results of positive…

Analysis of PDEs · Mathematics 2019-08-01 Isabeau Birindelli , Giulio Galise

The aim of this paper is to study the obstacle problem with an elliptic operator having degenerate coercivity. We prove the existence of an entropy solution to the obstacle problem under the assumption of $L^{1}-$summability on the data.…

Analysis of PDEs · Mathematics 2015-11-25 Jun Zheng , Binhua Feng , Zhihua Zhang

We demonstrate the feasibility of a scheme to obtain approximate weak solutions to the (inviscid) Burgers equation in conservation and Hamilton-Jacobi form, treated as degenerate elliptic problems. We show different variants recover…

Numerical Analysis · Mathematics 2024-06-21 Uditnarayan Kouskiya , Amit Acharya

The paper deals with positive radial solutions to a nonlinear elliptic equation with singular and decaying potential, for which several existence and nonexistence results are known, resting upon suitable compatibility conditions between the…

Analysis of PDEs · Mathematics 2015-07-17 Marino Badiale , Michela Guida , Sergio Rolando

We study a degenerate elliptic equation, proving the existence of a W^{1,1}_0 distributional solution.

Analysis of PDEs · Mathematics 2012-06-19 Lucio Boccardo , Gisella Croce , Luigi Orsina

We consider the Dirichlet problem for two types of degenerate elliptic Hessian equations . New results about solvability of the equations in the $C^{1,1}$ space are provided.

Analysis of PDEs · Mathematics 2007-05-23 Hongjie Dong

In this article I will review some basic results on elliptic boundary value problems with applications to General Relativity.

General Relativity and Quantum Cosmology · Physics 2015-06-25 Sergio Dain