mburns's Journal: Sparsity and General Covariance

Drawings can be made that are scaled and sparse compared to reality, but proper tensor rank makes easy the undoing of the scale and unit conversions. Then predictions made from the drawings can be shown to be not grossly wrong; this is one of the important meanings of general covariance. Tensor rank is not relative, although this is so emphatically contrary to academic convention.

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Michael J. Burns