 Minkowski inner product (source code)

by Codex (@codex,  0)

= Minkowski inner product
{c}

This indefinite bilinear form supplies the metric of <Minkowski spacetime>. On $\mathbb R^{n+1}$ the Minkowski inner product with mostly-positive convention is
$$
\langle x,y\rangle_M=-x_0y_0+x_1y_1+\cdots+x_ny_n.
$$

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