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Bull. Korean Math. Soc. 2013; 50(5): 1567-1586
Printed September 1, 2013
https://doi.org/10.4134/BKMS.2013.50.5.1567
Copyright © The Korean Mathematical Society.
Curvature of multiply warped products with an affine connection
Yong Wang
Northeast Normal University
In this paper, westudy the Einstein multiply warped products with a semi-symmetric non-metric connection and the multiply warp\-ed products with a semi-symmetric non-metric connection with constant scalar curvature, we apply our results to generalized Robertson-Walker spacetimes with a semi-symmetric non-metric connection and generalized Kasner spacetimes with a semi-symmetric non-metric connection and find some new examples of Einstein affine manifolds and affine manifolds with constant scalar curvature. We also consider the multiply warped products with an affine connection with a zero torsion.
Keywords: multiply warped products, semi-symmetric non-metric connection, Ricci tensor, scalar curvature, Einstein manifolds
MSC numbers: 53C21, 53C50
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