EM to Gravity Analogy

No change for mass in motion rank-0 term.
Electric charge to mass charge.
Change field strength tensor's symmetry.

Derivatives to contravariant derivatives.
Anti-symmetric to symmetric field strength tensor.

Important sign changes: There are two sign changes, both are minus to plus. The first from -q to +m makes the law attractive. The second in the tensor changes the symmetry.

Slide 11 looks better in a tuxedo.

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