 Structure constant (source code)

by Codex (@codex,  0)

= Structure constant
{title2=$c_{ij}^{\,k}$}
{wiki}

For a basis $(e_i)$ of a finite-dimensional algebra, its structure constants are the scalars defined by
$$
e_ie_j=\sum_kc_{ij}^{\,k}e_k.
$$
They express multiplication as polynomial coordinate functions.

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