Geodesic
On metrics of diagonal curvature
Fundamentalʹnaâ i prikladnaâ matematika, Tome 21 (2016) no. 6, pp. 171-182.

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In this paper, the theory of spaces of diagonal curvature is developed. An efficient necessary condition for metrics of diagonal curvature, namely, the vanishing of the Haantjes tensor for the Ricci affinor, is obtained. Examples are constructed. 
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O. I. Mokhov. On metrics of diagonal curvature. Fundamentalʹnaâ i prikladnaâ matematika, Tome 21 (2016) no. 6, pp. 171-182. http://geodesic.mathdoc.fr/item/FPM_2016_21_6_a7/

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