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Related papers: Sharp Estimates for the $\bar{\partial}$-Neumann P…

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We give a simple proof of the fact that an "$f$-estimate" for the $\bar\partial$-Neumann problem implies a lower bound on the geomatric type of the boundary along any complex one dimensional variety. The proof uses the existence of peak…

Complex Variables · Mathematics 2017-04-17 Tran Vu Khanh

This paper studies the Neumann boundary value problems for the Stokes equations in a convex domain in $\mathbb{R}^d$. We obtain nontangential-maximal-function estimates in $L^p$ and $W^{1, p}$ estimates for $p$ in certain ranges depending…

Analysis of PDEs · Mathematics 2024-10-23 Jun Geng , Zhongwei Shen

We consider the elliptic equation $-\Delta u+ u=0$ in a bounded, smooth domain $\Omega\subset\mathbb R^{2}$ subject to the nonlinear Neumann boundary condition $\partial u/\partial\nu = |u|^{p-1}u$ on $\partial\Omega$ and study the…

Analysis of PDEs · Mathematics 2024-07-30 Francesca De Marchis , Habib Fourti , Isabella Ianni

In this paper we discuss compactness estimates for the $\bar \partial $-Neumann problem in the setting of weighted $L^2$-spaces on $\mathbb{C}^n.$ For this purpose we use a version of the Rellich - Lemma for weighted Sobolev spaces.

Complex Variables · Mathematics 2009-03-11 Klaus Gansberger , Friedrich Haslinger

We establish a spatial gradient maximum principle for classical solutions to the initial and Neumann boundary value problem of some quasilinear parabolic equations on smooth convex domains.

Analysis of PDEs · Mathematics 2016-05-17 Seonghak Kim

Let $\Omega\subset\mathbb{C}^m$ be a bounded pseudoconvex domain with smooth boundary. For each $k\in\mathbb{N}$, we give a sufficient condition to estimate the $\bar\partial$-Neumann operator in the Sobolev space $W^k(\Omega)$. The key…

Complex Variables · Mathematics 2019-05-13 Phillip Harrington , Bingyuan Liu

In this paper we study optimization problems for Neumann eigenvalues $\mu_k$ among convex domains with a constraint on the diameter or the perimeter. We work mainly in the plane, though some results are stated in higher dimension. We study…

Analysis of PDEs · Mathematics 2024-02-07 Beniamin Bogosel , Antoine Henrot , Marco Michetti

This paper is concerned with the discretization error analysis of semilinear Neumann boundary control problems in polygonal domains with pointwise inequality constraints on the control. The approximations of the control are piecewise…

Numerical Analysis · Mathematics 2015-05-12 Johannes Pfefferer , Klaus Krumbiegel

We study the $\overline{\partial}$-Neumann problem using the Sobolev space inner product. We show that the problem can be solved on any smoothly bounded, pseudoconvex domain. We further formulate estimates and the basic results of a Sobolev…

Complex Variables · Mathematics 2008-02-03 Luigi Fontana , Steven G. Krantz , Marco M. Peloso

We construct the Neumann Green function and establish scale invariant regularity estimates for solutions to the Neumann problem for the elliptic operator $Lu=-{\rm div}({\bf A} \nabla u+ \boldsymbol{b}u)+ \boldsymbol{c} \cdot \nabla u+du$…

Analysis of PDEs · Mathematics 2024-12-13 Seick Kim , Georgios Sakellaris

In this paper we establish well posedness of the Neumann problem with boundary data in $L^2$ or the Sobolev space $\dot W^2_{-1}$, in the half space, for linear elliptic differential operators with coefficients that are constant in the…

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

This paper studies global a priori gradient estimates for divergence-type equations patterned over the $p$-Laplacian with first-order terms having polynomial growth with respect to the gradient, under suitable integrability assumptions on…

Analysis of PDEs · Mathematics 2024-10-22 Marco Cirant , Alessandro Goffi , Tommaso Leonori

We use weighted $L^2$-methods to obtain sharp pointwise estimates for the canonical solution to the equation $\bar\partial u=f$ on smoothly bounded strictly convex domains and the Cartan classical domain domains when $f$ is bounded in the…

Complex Variables · Mathematics 2023-05-10 Robert Xin Dong , Song-Ying Li , John N. Treuer

We consider the equation $-\epsilon^{2}\Delta u + u = u^ {p}$ in a bounded domain $\Omega\subset\R^{3}$ with edges. We impose Neumann boundary conditions, assuming $1<p<5$, and prove concentration of solutions at suitable points of…

Analysis of PDEs · Mathematics 2015-05-20 Serena Dipierro

In this paper, we consider the finite element approximation for a parabolic problem on a smooth domain $\Omega \subset \mathbb{R}^N$ with the inhomogeneous Neumann boundary condition. We emphasize that the domain can be non-convex in…

Numerical Analysis · Mathematics 2018-07-04 Takahito Kashiwabara , Tomoya Kemmochi

We give a sufficient condition for subelliptic estimates for the d-bar-Neumann operator on smoothly bounded, pseudoconvex domains in $\mathbb{C}^n$. This condition is a quantified version of McNeal's condition ($\tilde{P}$) for compactness…

Complex Variables · Mathematics 2011-10-10 Anne-Katrin Herbig

We establish optimal L^p bounds for the nontangential maximal function of the gradient of the solution to a second order elliptic operator in divergence form, possibly non-symmetric, with bounded measurable coefficients independent of the…

Analysis of PDEs · Mathematics 2007-05-23 Carlos E. Kenig , David J. Rule

We study an inhomogeneous Neumann boundary value problem for functions of least gradient on bounded domains in metric spaces that are equipped with a doubling measure and support a Poincar\'e inequality. We show that solutions exist under…

Metric Geometry · Mathematics 2017-08-09 Panu Lahti , Lukas Maly , Nageswari Shanmugalingam

This paper is concerned with proving superlogarithmic estimates for the operator $\Box_b$ on pseudoconvex CR manifolds and using them to establish hypoellipticity of $\Box_b$ and of the $\bar{\partial}$-Neumann problem. These estimates are…

Complex Variables · Mathematics 2007-05-23 J. J. Kohn

We investigate regularity properties of the $\overline{\partial}$-equation on domains in a complex euclidean space that depend on a parameter. Both the interior regularity and the regularity in the parameter are obtained for a continuous…

Complex Variables · Mathematics 2017-11-15 Xianghong Gong , Kang-Tae Kim