Remark 3.16 . [04C4]

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Remark 3.16.

The normalization $F(q)=0$ is convenient, but changing $F$ by a constant along $\Sigma$ does not affect $\mathcal{I}$ , due to the energy identity

\int_{\Sigma}\omega+\sum_{\text{all corners}}f|^{+}_{-}=0.