Geodesic
Some properties concerning curvature tensors of eight-dimensional Walker manifolds
Žurnal matematičeskoj fiziki, analiza, geometrii, Tome 8 (2012) no. 1, pp. 21-37 Cet article a éte moissonné depuis la source Math-Net.Ru

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The main purpose of the present paper is to study conditions for the eight-dimensional Walker manifolds which admit a field of parallel null 4-planes to be Einsteinian, Osserman, or locally conformally flat. 
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M. Iscan; A. Gezer; A. Salimov. Some properties concerning curvature tensors of eight-dimensional Walker manifolds. Žurnal matematičeskoj fiziki, analiza, geometrii, Tome 8 (2012) no. 1, pp. 21-37. http://geodesic.mathdoc.fr/item/JMAG_2012_8_1_a1/

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