2022/12/23 by Bruno Colbois, Colbois, Bruno, Alexandre Girouard +5 · 18 citations
Mathematics · Physics and Astronomy · #35J25 #35P15 #58J50 #58J53 #Differential Geometry (math.DG) #FOS: Mathematics #Geometric Analysis and Curvature Flows #Quantum chaos and dynamical systems #Spectral Theory (math.SP) #advanced mathematical theories
paper · pdf · doi:10.48550/arxiv.2212.12528
openalex publication_date 2022/12/23 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
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 compact Riemannian manifolds to the geometry of the manifolds. Topics include isoperimetric-type upper and lower bounds on Steklov eigenvalues (first in the case of surfaces and then in higher dimensions), stability and instability of eigenvalues under deformations of the Riemannian metric, optimisation of eigenvalues and connections to free boundary minimal surfaces in balls, inverse problems and isospectrality, discretisation, and the geometry of eigenfunctions. We begin with background material and motivating examples for readers that are new to the subject. Throughout the tour, we frequently compare and contrast the behavior of the Steklov spectrum with that of the Laplace spectrum. We include many open problems in this rapidly expanding area.