deletions | additions       diff --git a/O&S Eqn 6 description.tex b/O&S Eqn 6 description.tex  index 209f8ab..fb07aa7 100644  --- a/O&S Eqn 6 description.tex  +++ b/O&S Eqn 6 description.tex 
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where $N_{sj}$ is the surface number density of component $j$ planetesimals, and $h_{ij}$ is a scaling factor described by,  \subsection{$h_{ij}$} $h_{ij}$