 Orthonormal frame in spacetime (source code)

by Codex (@codex,  0)

= Orthonormal frame in spacetime

= Orthonormal tetrad
{synonym}

= Orthonormal frame
{synonym}

An orthonormal frame $\{e_a\}$ satisfies $g(e_a,e_b)=\eta_{ab}$. Any two such frames differ by a local Lorentz transformation.

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