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Questions related from Sameh Shenawy
Some Riemannian manifolds are expressed as a product manifold. Recently, I have read two articles about space-times. In both articles, the authors prove that a Riemannian manifold \bar{M}^n is...
13 March 2015 8,964 11 View
Suppose that we have two functions f and h on a riemannian manifold M. If Hessf =Hessh can we get a relation between both functions.
22 January 2015 4,058 9 View
Bishop and O'Neil defined warped product manifolds. Space-times are good examples of such warped product manifolds. Is there a famous and important example of space-times I×M where M is itself a...
16 November 2014 8,741 7 View
