Illinois Journal of Mathematics

Domain deformations and eigenvalues of the Dirichlet Laplacian in a Riemannian manifold

Ahmad El Soufi and Saïd Ilias

Full-text: Open access


For any bounded regular domain $\Omega$ of a real analytic Riemannian manifold $M$ we denote by $\lambda_{k}(\Omega)$ the $k$-th eigenvalue of the Dirichlet Laplacian of $\Omega$. In this paper, we consider $\lambda_k$ as a functional on the set of domains of fixed volume in $M$. We introduce and investigate a natural notion of critical domain for this functional. In particular, we obtain necessary and sufficient conditions for a domain to be critical, locally minimizing or locally maximizing for $\lambda_k$. These results rely on Hadamard type variational formulae that we establish in this general setting.

As an application, we obtain a characterization of critical domains of the trace of the heat kernel under Dirichlet boundary conditions.

Article information

Illinois J. Math., Volume 51, Number 2 (2007), 645-666.

First available in Project Euclid: 13 November 2009

Permanent link to this document

Digital Object Identifier

Mathematical Reviews number (MathSciNet)

Zentralblatt MATH identifier

Primary: 58J50: Spectral problems; spectral geometry; scattering theory [See also 35Pxx]
Secondary: 35P05: General topics in linear spectral theory 35P20: Asymptotic distribution of eigenvalues and eigenfunctions 58J32: Boundary value problems on manifolds


El Soufi, Ahmad; Ilias, Saïd. Domain deformations and eigenvalues of the Dirichlet Laplacian in a Riemannian manifold. Illinois J. Math. 51 (2007), no. 2, 645--666. doi:10.1215/ijm/1258138436.

Export citation