deletions | additions       diff --git a/kinematics.tex b/kinematics.tex  index e665e81..87115df 100644  --- a/kinematics.tex  +++ b/kinematics.tex 
...
\end{split}  \end{equation}  The neutrinos mass is many orders of magnitude smaller than that of the other particles \cite{Robertson_2008}; to good approximation approximation,  \begin{equation}  \begin{split}