deletions | additions       diff --git a/Electromagnetism.tex b/Electromagnetism.tex  index c008a60..9527353 100644  --- a/Electromagnetism.tex  +++ b/Electromagnetism.tex 
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-cB_y & -E_z & 0 & E_x \\  -cB_z & E_y & -E_x & 0  \end{bmatrix}  \\  =\frac{1}{2}G_{\gamma \delta} = \frac{1}{4} \varepsilon_{\alpha \beta \gamma \delta}F^{\alpha \beta}  \end{equation}