1978
DOI: 10.1007/bf00151525
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Einstein-like manifolds which are not Einstein

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Cited by 223 publications
(158 citation statements)
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“…, n. Hence λ = |R| 2 /n is constant under the hypotheses of the lemma. As is well-known (see, e.g., [13]), a Riemannian manifold with Codazzi Ricci tensor has constant scalar curvature. So, both (4) and (5) are satisfied and the last statement of the lemma follows.…”
Section: Constant Scalar Curvaturementioning
confidence: 84%
“…, n. Hence λ = |R| 2 /n is constant under the hypotheses of the lemma. As is well-known (see, e.g., [13]), a Riemannian manifold with Codazzi Ricci tensor has constant scalar curvature. So, both (4) and (5) are satisfied and the last statement of the lemma follows.…”
Section: Constant Scalar Curvaturementioning
confidence: 84%
“…В частности, дан-ный класс многообразий содержит многообразия Эйнштейна (r = λg) и их прямые произведения, локально симметричные пространства (∇R = 0), Риччи параллельные многообразия (∇r = 0) МАТЕМАТИКА И МЕХАНИКА МАТЕМАТИКА И МЕХАНИКА и конформно плоские многообразия (W = 0) (см., например, [1]). Заметим также, что в случае многообразий постоянной скалярной кривизны класс многообразий с нулевым тензором Схоуте-на Вейля содержится в классе эйнштейново-подобных многообразий в смысле А. Грея [2].…”
Section: Doi 1014258/izvasu(2018)1-18unclassified
“…An Almost Pseudo Conharmonically Symmetric Manifold of Dimension n, (n > 2) with Codazzi Type of Ricci Tensor A.Gray [16] introduced two classes of Riemannian manifolds determined by the covariant differentiation of Ricci tensor. The class A consisting of all Riemannian manifolds whose Ricci tensor S is a Codazzi tensor, that is,…”
Section: Preliminariesmentioning
confidence: 99%