deletions | additions       diff --git a/kinematics.tex b/kinematics.tex  index 46022df..428fa11 100644  --- a/kinematics.tex  +++ b/kinematics.tex 
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\mathbf{\mu^{+}}^2 = \mathbf{\pi^{+}}^2 - 2 ( \mathbf{\pi^{+}} \cdot \mathbf{\nu_{\mu}} ) - \mathbf{\nu_{\mu}}^2  \end{equation}  It is important to note that since the magnitude of a 4-vector is a Lorenz invariant, for any energy-momentum 4 vector, $\mathbf{p}$, vector $\mathbf{p}$  where \begin{equation}  \mathbf{p} = (E, \vec{p} )