Without regard to a coordinate system (I only wish to consider special relativity) the stress-energy-momentum tensor defines a linear transformation from a 4-vector to a 4-vector. Let T be the linear transformation then b = T(a), a and b are 4-vectors. What is the physical meaning of a and b or for a and b arbitrary vectors what is the physical meaning of a⋅T(b).(adsbygoogle = window.adsbygoogle || []).push({});

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# A What is the coordinate free stress-energy-momentum tensor

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