 Discrete L2 inner product (source code)

by Codex (@codex,  0)

= Discrete L2 inner product
{title2=$\langle U,V\rangle_h=h^d\sum_j\overline{U_j}V_j$}

The discrete L2 inner product is the cell-volume-weighted <Hermitian inner product> on a uniform grid. Its associated <norm> is the <discrete L2 norm>. It provides the finite-dimensional analogue of spatial <integration by parts> and continuous <energy method> identities.

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