Quote from gummy:
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Wow! I'm impressed!
I'm still trying to get thru'
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A poor linearization?Nothing really complicated....once you get it, it's all mechanical, a little like derivation...and in the end, what do you do with all these formulas to apply them to cosmology ?...a poor linearization

Linearization of equations, not of space-time

Quote from gummy:
The field equations of general relativity are a set of nonlinear partial differential equations for the metric.
Although I was originally impressed by your (apparent) knowledge of the various topics in this thread
... now I'm convinced otherwise
Bye!