3 papers
math.SP2025
Payne-Pólya-Weinberger inequalities on closed Riemannian manifolds
Mehdi Eddaoudi
Payne-Pólya-Weinberger inequalities are known to be exclusive to bounded Euclidean domains with Dirichlet boundary condition. In this paper, we discuss the corresponding inequalit…
math.SP2025
Lower bounds for the sum of the reciprocals of eigenvalues of bounded domains in , spheres, and closed orientable surfaces
Mehdi Eddaoudi
We establish lower bounds for the sum of the reciprocals of eigenvalues of the Laplacian. For bounded domains, our result extends the upper bound provided by Bucur and Henrot on th…
math.SP2025
Upper bounds for the second nonzero eigenvalue of the Laplacian via folding and conformal volume
Mehdi Eddaoudi, Alexandre Girouard
We prove an upper bound for the volume-normalized second nonzero eigenvalue of the Laplace operator on closed Riemannian manifold, in terms of the conformal volume. This bound prov…