International Journal of Mathematics and Mathematical Sciences
Volume 14 (1991), Issue 3, Pages 595-604
Hypersurfaces in a conformally flat space with curvature collineation
1Department of Mathematics and Statistics, University of Windsor, Ontario, Windsor N9B 3P4, USA
2Department of Mathematics, University of New Haven, West Haven 06516, Connecticut, USA
Received 7 February 1990; Revised 13 August 1990
Copyright © 1991 K. L. Duggal and R. Sharma. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
We classify the shape operators of Einstein and pseudo Einstein hypersurfaces in a
conformally flat space with a symmetry called curvature collineation. We solve the fundamental
problem of finding all possible forms of non-diagonalizable shape operators. A physical example
of space-time with matter is presented to show that the energy condition has direct relation with
the diagonalizability of shape operator.