id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
ejpam-6985	Ben Ahmed , Ali	A Cheeger-type Inequality for the Sub-Laplacian on Pseudo-Hermitian CR Manifolds	2025	16	.pdf	application/pdf	5346	361	66	For a compact quotient M = Γ\Hn (with Haar measure), the horizontal structure is homogeneous and torsion-free; classical isoperimetric and Sobolev inequalities are sharp in this case In this paper, we introduce a CR Cheeger constant and establish Cheeger-type and Buser-type inequalities for the first nonzero eigenvalue of the sub-Laplacian on compact strictly pseudoconvex pseudo-Hermitian CR manifolds.	cache/ejpam-6985.pdf	txt/ejpam-6985.txt