THE FIRST POSITIVE EIGENVALUE OF THE SUB-LAPLACIAN ON CR SPHERES
Résumé
We prove that the first positive eigenvalue, normalized by the volume, of the sub-Laplacian associated with a strictly pseudoconvex pseudo-Hermitian structure θ on the CR sphere S 2n+1 ⊂ C n+1 , achieves its maximum when θ is the standard contact form.
Domaines
Géométrie métrique [math.MG]| Origine | Fichiers produits par l'(les) auteur(s) |
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