deletions | additions       diff --git a/4-Dimensions.tex b/4-Dimensions.tex  index 1b6d3b2..a7974fc 100644  --- a/4-Dimensions.tex  +++ b/4-Dimensions.tex 
...
Therefore \begin{equation}  T(r_1,r_2,r_3)=r_1\cdot(r_2\times T(r_1,r_2,r_3)=\textbf{i}r_1\cdot(r_2\times  r_3)+... \end{equation}