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We consider a classical shape optimization problem for the eigenvalues of elliptic operators with homogeneous boundary conditions on domains in the $N$-dimensional Euclidean space. We survey recent results concerning the analytic dependence…

Optimization and Control · Mathematics 2014-12-22 Davide Buoso , Pier Domenico Lamberti

In the present paper, we study the variational properties of Steklov transmission eigenvalues, which can be seen as eigenvalues of the sum of two Dirichlet-to-Neumann operators on two different sides of a given curve contained in a surface.…

Spectral Theory · Mathematics 2025-09-30 Mikhail Karpukhin , Alain Didier Noutchegueme

Using methods in the spirit of deterministic homogenisation theory we obtain convergence of the Steklov eigenvalues of a sequence of domains in a Riemannian manifold to weighted Laplace eigenvalues of that manifold. The domains are obtained…

Spectral Theory · Mathematics 2021-07-09 Alexandre Girouard , Jean Lagacé

We develop a numerical method for solving shape optimization of functionals involving Steklov eigenvalues and apply it to the problem of maximization of the $k$-th Steklov eigenvalue, under volume constraint. A similar study in the planar…

Optimization and Control · Mathematics 2021-09-07 Pedro R. S. Antunes

The Steklov eigenvalue problem, first introduced over 125 years ago, has seen a surge of interest in the past few decades. This article is a tour of some of the recent developments linking the Steklov eigenvalues and eigenfunctions of…

Spectral Theory · Mathematics 2023-09-06 Bruno Colbois , Alexandre Girouard , Carolyn Gordon , David Sher

Recent progress in PDE constrained optimization on shape manifolds is based on the Hadamard form of shape derivatives, i.e., in the form of integrals at the boundary of the shape under investigation, as well as on intrinsic shape metrics.…

Optimization and Control · Mathematics 2017-01-03 Volker Schulz , Martin Siebenborn , Kathrin Welker

In this article, we study Steklov eigenvalues and mixed Steklov Neumann eigenvalues on a smooth bounded domain in $\mathbb{R}^{n}$, $n \geq 2$, having a spherical hole. We focus on two main results related to Steklov eigenvalues. First, we…

Spectral Theory · Mathematics 2024-12-24 Sagar Basak , Sheela Verma

Let M be a compact Riemannian manifold with boundary. Let b>0 be the number of connected components of its boundary. For manifolds of dimension at least 3, we prove that it is possible to obtain an arbitrarily large (b+1)-th Steklov…

Spectral Theory · Mathematics 2018-10-16 Bruno Colbois , Ahmad El Soufi , Alexandre Girouard

We study the Steklov eigenvalue problem for the $\infty-$orthotropic Laplace operator defined on convex sets of $\mathbb{R}^N$, with $N\geq2$, considering the limit for $p\to+\infty$ of the Steklov problem for the $p-$orthotropic Laplacian.…

Analysis of PDEs · Mathematics 2021-03-25 Giacomo Ascione , Gloria Paoli

We consider a class of eigenvalue problems for poly-harmonic operators, including Dirichlet and buckling-type eigenvalue problems. We prove an analyticity result for the dependence of the symmetric functions of the eigenvalues upon domain…

Spectral Theory · Mathematics 2012-10-15 Davide Buoso , Pier Domenico Lamberti

We present a unified description of extremal metrics for the Laplace and Steklov eigenvalues on manifolds of arbitrary dimension using the notion of $n$-harmonic maps. Our approach extends the well-known results linking extremal metrics for…

Differential Geometry · Mathematics 2021-03-30 Mikhail Karpukhin , Antoine Métras

We investigate the Steklov eigenvalue problem in an exterior Euclidean domain. First, we present several formulations of this problem and establish the equivalences between them. Next, we examine various properties of the exterior Steklov…

Spectral Theory · Mathematics 2025-12-05 Lukas Bundrock , Alexandre Girouard , Denis S. Grebenkov , Michael Levitin , Iosif Polterovich

We consider the Steklov eigenvalues of the Laplace operator as limiting Neumann eigenvalues in a problem of boundary mass concentration. We discuss the asymptotic behavior of the Neumann eigenvalues in a ball and we deduce that the Steklov…

Spectral Theory · Mathematics 2014-10-03 Pier Domenico Lamberti , Luigi Provenzano

In this note we establish an expression for the Steklov spectrum of warped products in terms of auxiliary Steklov problems for drift Laplacians with weight induced by the warping factor. As an application, we show that a compact manifold…

Differential Geometry · Mathematics 2024-03-15 Alexandre Girouard , Panagiotis Polymerakis

This paper investigates the asymptotic behavior of the eigenvalues of the biharmonic operator on a thin set with Steklov boundary condition. The thin set is taken to be a tubular neighborhood of a planar smooth domain. We show that, as the…

Analysis of PDEs · Mathematics 2026-03-03 Bauyrzhan Derbissaly , Nurbek kakharman

We consider second order elliptic systems of partial differential equations subject to Dirichlet and Neumann boundary conditions. We prove analyticity of the elementary symmetric functions of the eigenvalues, and compute Hadamard-type…

Spectral Theory · Mathematics 2014-11-13 Davide Buoso

In this paper, we address the problem of maximizing the Steklov eigenvalues with a diameter constraint. We provide an estimate of the Steklov eigenvalues for a convex domain in terms of its diameter and volume and we show the existence of…

Spectral Theory · Mathematics 2020-04-30 Abdelkader Al Sayed , Beniamin Bogosel , Antoine Henrot , Florent Nacry

We study the optimization of Steklov eigenvalues with respect to a boundary density function $\rho$ on a bounded Lipschitz domain $\Omega \subset \mathbb{R}^N$. We investigate the minimization and maximization of $\lambda_k(\rho)$, the…

Optimization and Control · Mathematics 2026-04-10 Chiu Yen Kao , Seyyed Abbas Mohammadi

We prove two upper bounds for the Steklov eigenvalues of a compact Riemannian manifold with boundary. The first involves the volume of the manifold and of its boundary, as well as packing and volume growth constants of the boundary and its…

Spectral Theory · Mathematics 2023-08-22 Bruno Colbois , Alexandre Girouard

We introduce a graph $\Gamma$ which is roughly isometric to the hyperbolic plane and we study the Steklov eigenvalues of a subgraph with boundary $\Omega$ of $\Gamma$. For $(\Omega_l)_{l\geq 1}$ a sequence of subraphs of $\Gamma$ such that…

Differential Geometry · Mathematics 2024-10-15 Léonard Tschanz