4 citations · 8 across the 6 of their papers we have counts for
5 papers · 1 filter
Lightlike foliations of semi-Riemannian manifolds
Elisabetta Barletta, Sorin Dragomir, Krishan L. Duggal
Using screen distributions and lightlike transversal vector bundles we develop a theory of degenerate foliations of semi-Riemannian manifolds.
The Lichnerowicz theorem on CR manifolds
Elisabetta Barletta
We obtain a Bochner type formula and an estimate from below on the spectrum of the sublaplacian of a compact strictly pseudoconvex CR manifold.
On the curvature groups of a CR manifold
Elisabetta Barletta, Sorin Dragomir
We show that any contact form whose Fefferman metric admits a nonzero parallel vector field is pseudo-Einstein of constant pseudohermitian scalar curvature. As an application we co…
On the pseudohermitian sectional curvature of a strictly pseudoconvex CR manifold
Elisabetta Barletta
We study the pseudohermitian sectional curvature of a CR manifold.
Jacobi fields of the Tanaka-Webster connection on Sasakian manifolds
Elisabetta Barletta, Sorin Dragomir
We build a variational theory of geodesics of the Tanaka-Webster connection on a strictly pseudoconvex CR manifold.