- #351

TrickyDicky

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I'm afraid you are not understanding what I'm saying, I have shown exactly what I said, not what you want me to show.DaleSpam said:You certainly didn't show that. To do that, you would have to write down the vector field and the metric in both coordinates, compute the Lie derivative of the metric wrt the vector field in each, and show that it is 0 in one and non-zero in the other.

My point about coordinate-dependance was (as explained in a previous post) about the causal nature (the type if you will ) of the KVF, not about the existence or not of a KVF regardless of its causal character (timelike or spacelike).