deletions | additions       diff --git a/Polters.tex b/Polters.tex  index aa313d0..0a01a05 100644  --- a/Polters.tex  +++ b/Polters.tex 
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For symmetry reasons we can adress the elements in a cyclic manner fitting to permutations. Then for example one can take the dot product as normal \begin{equation}  /a_1 \backslash \cdot/b_1 \backslash\\ \cdot/b_1\backslash \hspace{95pt}\\  /a_2 a_3\backslash /b_2 b_3\backslash\\ b_3\backslash  = a_1b_1+a_2b_2+a_3b_3 \end{equation}