Volume 36 • Number 4 • 2013   • $N(k)$-Quasi Einstein Manifolds Satisfying Certain Curvature Conditions Ahmet Yildiz, Uday Chand De and Azime Cetinkaya Abstract. The object of the present paper is to study $N(k)$-quasi Einstein manifolds satisfying certain curvature conditions. Two examples have been constructed to prove the existence of such a manifold. Finally, a physical example of an $N(k)$-quasi Einstein manifold is given. 2010 Mathematics Subject Classification:53C25, 53C35, 53D10 Full text: PDF