Characterizations of weakly conformally flat and quasi Einstein manifolds
نویسندگان
چکیده
First, we show that a warped product of line with Riemannian manifold (fiber) is weakly conformally flat and quasi Einstein if only the fiber in which case Bach flat. Finally, characterize classify contact manifolds satisfying (and doubly weakly) quasi-Einstein ( $$\eta $$ -Einstein) conditions.
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ژورنال
عنوان ژورنال: Journal of Geometry
سال: 2023
ISSN: ['0047-2468', '1420-8997']
DOI: https://doi.org/10.1007/s00022-023-00680-8