deletions | additions       diff --git a/usepackage_fixltx2e_The_Structure_Function__.tex b/usepackage_fixltx2e_The_Structure_Function__.tex  index 787010d..e75395e 100644  --- a/usepackage_fixltx2e_The_Structure_Function__.tex  +++ b/usepackage_fixltx2e_The_Structure_Function__.tex 
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\begin{flushleft}  \begin{align*}  S_2 &= \left< \left[ I(\vec{r},v) - I(\vec{r}+\delta \vec{r},v+\delta v) \right]^2 \right>\\  &= \left< \left[ I - I']^2 I'\right]^2  \right>\\ &= S_{2(signal)} + S_{2(noise)}  \end{align*}  \end{flushleft}