 Euclidean orthonormal frame (source code)

by Codex (@codex,  0)

= Euclidean orthonormal frame
{c}
{title2=$g(e_i,e_j)=\delta_{ij}$}

This is a frame of a real <vector bundle> with a positive-definite <fiber metric> for which the basis vectors are orthonormal. The <Gram-Schmidt process> applied to any smooth local frame produces such frames smoothly. They are distinguished from Lorentzian orthonormal frames, whose metric has mixed signature.

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