A lower bound on the spectrum of the sublaplacian
Résumé
We establish a new lower bound on the first nonzero eigenvalue $\lambda_1 (\theta )$ of the sublaplacian $\Delta_b$ on a compact strictly pseudoconvex CR manifold $M$ carrying a contact form $\theta$ whose Tanaka-Webster connection has pseudohermitian Ricci curvature bounded from below.
Domaines
Géométrie métrique [math.MG]Origine | Fichiers produits par l'(les) auteur(s) |
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