1 citations · 1 across the 3 of their papers we have counts for
5 papers
A Survey On Non Characteristic Heisenberg Group Domains
Najoua Gamara, Nadia Alamri
In this work, we give a survey on non characteristic domains of Heisenberg groups. We prove that bounded domains which are diffeomorphic to the solid torus having the center of the…
The Beta- flatness Condition in CR Spheres Multiplicity Results
Najoua Gamara, Boutheina Hafassa, Akrem Makni
We give multiplicity results for the problem of prescribing the scalar curvature on Cauchy- Riemann spheres under Beta-flatness condition. To give a lower bound for the number of s…
The First Eigenvalue of the Kohn-Laplace Operator in the Heisenberg Group
Najoua Gamara, Akram Makni
In this paper, by extending the notions of harmonic transplantation and harmonic radius in the Heisenberg group, we give an upper bound for the first eigenvalue for the following D…
Torsional Rigidity on Compact Riemannian Manifolds with lower Ricci Curvature Bounds
Najoua Gamara, Abdelhalim Hasnaoui, Akrem Makni
In this article we prove a reverse Hölder inequality for the fundamental eigenfunction of the Dirichlet problem on domains of a compact Riemannian manifold with lower Ricci curvatu…
Ricci curvature and conformality of Riemannian manifolds to spheres
Salem Eljazi, Najoua Gamara, Habiba Guemri
In this paper we give bounds for the first eigenvalue of the conformal Laplacian and the Yamabe invariant of a compact Riemannian manifold, by using conditions on the Ricci curvatu…