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AbstractAbstract
[en] P-spaces are defined as 4-dimensional Riemannian spaces in which the divergence of Petrov's space-matter tensor vanishes. In such spaces the 'space-matter current' is conserved, the three divergences of projective curvature tensor as well as the divergence of concircular curvature tensor vanish. A perfect fluid distribution is a P-space if and only if (i) its stream lines are shear-free, irrotational (ii) the energy density is gradient-free and (iii) the equation of state is rho-3P-3sigma=constant. (author)
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Journal Article
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Journal of Shivaji University; v. 7(14); p. 127-133
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