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i kind of have a black hole regarding my understanding of the consistensy of

tidal forces and geodesic deviation analysis. one can determine some coefficients

of the riemman tensor from the tidal forces equations, by getting to a form

that is like the form of the geodesic deviation equation.

however, in the tidal forces analysis we assume that spacetime is flat,

and in geodesic deviation analysis we assume spacetime is curved. how come

we can than compare the two equations? that is, in flat space time

we have a bilocal meaning to vectors, where in curved spacetime we have a local

meaning?

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# Tidal forces and geodesic deviation: a principle question

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