deletions | additions       diff --git a/Node.tex b/Node.tex  index 0e61eed..a9001d1 100644  --- a/Node.tex  +++ b/Node.tex 
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\begin{equation}  h_i = \|h_i^{fg}\| + \alpha^bg \alpha^{bg}  \|h_i^{bg}\| \end{equation}