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Suppose one event is emission of light from some point A, and another event is its arrival to some point B. There is one observer who is watching these events

So and if we write the interval (rewrite it in the way to separate the time term-dx00) we get the quadratic equation with respect to dx00, solving this equation we have to roots (dx00)1, (dx00)2, in SR they differ with the sign only, (it means forward-backward spread of light(from A to B and from B to A)But generally in GR these are two different solutions and in that case does it mean that external observer will say that light takes (dx00)1 time to go from A to B and it will take (dx00)2 time to go backward (from B to A)?

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# Sure this is easy for you but I dont understand

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