General Relativity Primer

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General Relativity Primer

Lorentz invariance dictates that two inertial frame and , with one moving with respect to the other at velocity , are related by:

where . Note, to give a taste of tensor forms, this all may be written as .

Remember the Lorentz invariant interval, which is conserved between frames:

Light travels a path. In tensor form, this equation looks like:

where , the metric tensor, is given by: