VictorMedvil
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The parameter r is a geometrical invariant of the hyperbolic space, and the sectional curvature is K = −1/r2. The scalar curvature is thus S = −n(n − 1)/r2. Explain this to me, from what I understand it is just a radius.weirdoguy said:Not in four dimensions. General definition is ##R=R^\mu_{\phantom{\mu}\mu}##. You should really study some textbook on very basics before you try to learn about quantum gravity.