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We prove global second-order regularity for a class of quasilinear elliptic equations, both with homogeneous Dirichlet and Neumann boundary conditions. A condition on the integrability of the second fundamental form on the boundary of the…

Analysis of PDEs · Mathematics 2025-07-23 Giuseppe Spadaro , Domenico Vuono

We study Neumann functions for divergence form, second order elliptic systems with bounded measurable coefficients in a bounded Lipschitz domain or a Lipschitz graph domain. We establish existence, uniqueness, and various estimates for the…

Analysis of PDEs · Mathematics 2014-09-25 Jongkeun Choi , Seick Kim

It is shown that the non-homogeneous Dirichlet and Neuman problems for the $2^{nd}$-order Seiberg-Witten equation admit a regular solution once the $\mathcal{H}$-condition (described in the article) is satisfied. The approach consist in…

Analysis of PDEs · Mathematics 2007-05-23 C M Doria

We prove the existence and uniqueness of weak solution of a Neumann boundary problem for an elliptic partial differential equation (PDE for short) with a singular divergence term which can only be understood in a weak sense. A probabilistic…

Probability · Mathematics 2018-04-24 Xue Yang , Jing Zhang

We provide a deterministic-control-based interpretation for a broad class of fully nonlinear parabolic and elliptic PDEs with continuous Neumann boundary conditions in a smooth domain. We construct families of two-person games depending on…

Analysis of PDEs · Mathematics 2013-11-14 Jean-Paul Daniel

This study is devoted to proving the existence of weak solutions for a nonlinear elliptic problem with Neumann-type boundary data. The problem is driven by a discontinuous power nonlinearity and a nonsmooth prescribed data. Additionally, we…

Analysis of PDEs · Mathematics 2026-04-28 Debajyoti Choudhuri , Dušan D. Repovš , Kamel Saoudi

The aim of this paper is to state and prove existence and uniqueness results for a general elliptic problem with homogeneous Neumann boundary conditions, often associated with image processing tasks like denoising. The novelty is that we…

Analysis of PDEs · Mathematics 2025-03-11 Bogdan Maxim

We prove estimates and existence results for some fully nonlinear elliptic equations on Riemannian manifolds. These equations are not arbitrary, but arise naturally in the study of conformal geometry.

Differential Geometry · Mathematics 2009-08-26 Jeff Viaclovsky

This paper is concerned with a Neumann type problem for singularly perturbed fractional nonlinear Schr\"odinger equations with subcritical exponent. For some smooth bounded domain $\Omega\subset \mathbf R^n$, our boundary condition is given…

Analysis of PDEs · Mathematics 2016-11-22 Guoyuan Chen

We develop estimates for the solutions and derive existence and uniqueness results of various local boundary value problems for Dirac equations that improve all relevant results known in the literature. With these estimates at hand, we…

Differential Geometry · Mathematics 2017-07-12 Qun Chen , Jürgen Jost , Linlin Sun , Miaomiao Zhu

In this work we consider higher dimensional thin domains with the property that both boundaries, bottom and top, present oscillations of weak type. We consider the Laplace operator with Neumann boundary conditions and analyze the behavior…

Analysis of PDEs · Mathematics 2024-05-10 José M. Arrieta , Manuel Villanueva-Pesqueira

We prove an existence theorem for positive solutions to Lichnerowicz-type equations on complete manifolds with boundary and nonlinear Neumann conditions. This kind of nonlinear problems arise quite naturally in the study of solutions for…

Analysis of PDEs · Mathematics 2017-08-16 Guglielmo Albanese , Marco Rigoli

In this paper, we prove the existence of a classical solution to a Neumann boundary problem for Hessian equations in uniformly convex domain. The methods depend upon the established of a priori derivative estimates up to second order. So we…

Analysis of PDEs · Mathematics 2024-04-22 Xi-Nan Ma , Guohuan Qiu

We show that if $u$ is a solution to a linear elliptic differential equation of order $2m\geq 2$ in the half-space with $t$-independent coefficients, and if $u$ satisfies certain area integral estimates, then the Dirichlet and Neumann…

Analysis of PDEs · Mathematics 2017-03-22 Ariel Barton , Steve Hofmann , Svitlana Mayboroda

This article studies the Dirichlet problem for a class of degenerate fully nonlinear elliptic equations on Riemannian manifolds with \textit{mean concave} boundary in the sense that the mean curvature of the boundary is…

Analysis of PDEs · Mathematics 2020-06-16 Rirong Yuan

We study a Neumann type initial-boundary value problem for strongly degenerate parabolic-hyperbolic equations under the nonlinearity-diffusivity condition. We suggest a notion of entropy solution for this problem and prove its uniqueness.…

Analysis of PDEs · Mathematics 2014-07-09 Yuxi Hu , Yachun Li

In this work we consider the asymptotic behavior of the nonlinear semigroup defined by a semilinear parabolic problem with homogeneous Neumann boundary conditions posed in a bounded region of the plane that degenerates into a line segment…

Analysis of PDEs · Mathematics 2013-12-05 Marcone C. Pereira

We consider the inverse problem of determining coefficients appearing in semilinear elliptic equations stated on Riemannian manifolds with boundary given the knowledge of the associated Dirichlet-to-Neumann map. We begin with a negative…

Analysis of PDEs · Mathematics 2024-06-18 Ali Feizmohammadi , Yavar Kian , Lauri Oksanen

In this paper we consider the overdetermined boundary problem for a general second order semilinear elliptic equation on bounded domains of $\mathbf{R}^n$, where one prescribes both the Dirichlet and Neumann data of the solution. We are…

Analysis of PDEs · Mathematics 2020-08-19 Miguel Domínguez-Vázquez , Alberto Enciso , Daniel Peralta-Salas

We study semilinear elliptic equations \begin{equation*} \begin{cases} -\Delta u = f(u) & \text{in } \Omega, \\ \partial_\nu u = 0 & \text{on } \partial\Omega, \end{cases} \end{equation*} with homogeneous Neumann boundary conditions in…

Analysis of PDEs · Mathematics 2026-03-27 Marta Calanchi , Giulio Ciraolo , Francesca Messina