deletions | additions       diff --git a/Sketchy Generation.tex b/Sketchy Generation.tex  index 4f106d7..5b4de48 100644  --- a/Sketchy Generation.tex  +++ b/Sketchy Generation.tex 
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\end{equation}  The first operation takes a vector and generates a skew symmetric matrix. The third operation defines the Levi-Civita symbol, a rank $3$ tensor which is essential to vector calculus. calculus and higher dimensional generalisations.  A use of the first operation would be to define the electromagnetic tensor which looks like \begin{equation} F_{\mu\nu}=\begin{bmatrix} 0 & E_x/c & E_y/c & E_z/c \\ -E_x/c & 0 & B_z & -B_y \\ -E_y/c & -B_z & 0 & B_x \\ -E_z/c & B_y & -B_x & 0 \end{bmatrix}  \end{equation}