Generalized Quasi-Einstein Manifolds in Contact Geometry

İnan Ünal
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İnan Ünal: Department of Computer Engineering, Munzur University, 62000 Tunceli, Turkey

Mathematics, 2020, vol. 8, issue 9, 1-13

Abstract: In this study, we investigate generalized quasi-Einstein normal metric contact pair manifolds. Initially, we deal with the elementary properties and existence of generalized quasi-Einstein normal metric contact pair manifolds. Later, we explore the generalized quasi-constant curvature of normal metric contact pair manifolds. It is proved that a normal metric contact pair manifold with generalized quasi-constant curvature is a generalized quasi-Einstein manifold. Normal metric contact pair manifolds satisfying cyclic parallel Ricci tensor and the Codazzi type of Ricci tensor are considered, and further prove that a generalized quasi-Einstein normal metric contact pair manifold does not satisfy Codazzi type of Ricci tensor. Finally, we characterize normal metric contact pair manifolds satisfying certain curvature conditions related to M -projective, conformal, and concircular curvature tensors. We show that a normal metric contact pair manifold with generalized quasi-constant curvature is locally isometric to the Hopf manifold S 2 n + 1 ( 1 ) × S 1 .

Keywords: generalized quasi-Einstein; contact pairs; generalized quasi-constant curvature; ?-projective curvature tensor (search for similar items in EconPapers)
JEL-codes: C (search for similar items in EconPapers)
Date: 2020
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