Bas du spectre et delta-hyperbolicité en géométrie de Hilbert plane
On montre l’équivalence entre l’hyperbolicité au sens de Gromov de la géométrie de Hilbert d’un domaine convexe du plan et la non nullité du bas du spectre de ce domaine.
Berger's Isoperimetric Problem and Minimal Immersions of Surfaces.
Bifurcation problems for nonlinear elliptic variational inequalities
Billiards and boundary traces of eigenfunctions
This is a report on recent results with A. Hassell on quantum ergodicity of boundary traces of eigenfunctions on domains with ergodic billiards, and of work in progress with Hassell and Sogge on norms of boundary traces. Related work by Burq, Grieser and Smith-Sogge is also discussed.
Bohm Aharonov effects for bounded states in the case of systems
Borne explicite du nombre de tores plats isopectraux à un tore donné.
Bornes universelles pour des invariants géométriques
Bounded domains which are isospectral but not congruent
Branson's -curvature in Riemannian and spin geometry.