deletions | additions       diff --git a/4-Dimensions.tex b/4-Dimensions.tex  index 0725ecc..2afacdd 100644  --- a/4-Dimensions.tex  +++ b/4-Dimensions.tex 
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\end{equation}  This matrix will become the covarient form of the electromagnetic tensor $F_{\mu\nu}$ $F_{\mu\nu}$. However this is 6 equations for 8 unknowns, leaving two free parameters that could take any value in the input four-vectors $\textbf{r}_1,\textbf{r}_2$.