ON WEAKLY B SYMMETRIC PSEUDO RIEMANNIAN MANIFOLDS AND ITS APPLICATIONS
Abstract
The object of the present paper is to study weakly B symmetric
manifolds (WBS)n. At first some geometric properties of (WBS)n(n > 2)
have been studied. Finally, we consider (WBS)4 spacetimes. They turn out
to be both perfect and imperfect fluids Robertson-Walker space-times : an
equation of state is provided in the first case, and in the second the nature of
the bulk viscosity pressure is pointed out. Also, we construct an example of a
(WBS)4.
manifolds (WBS)n. At first some geometric properties of (WBS)n(n > 2)
have been studied. Finally, we consider (WBS)4 spacetimes. They turn out
to be both perfect and imperfect fluids Robertson-Walker space-times : an
equation of state is provided in the first case, and in the second the nature of
the bulk viscosity pressure is pointed out. Also, we construct an example of a
(WBS)4.
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