deletions | additions       diff --git a/untitled.tex b/untitled.tex  index 6ac9520..392f3fb 100644  --- a/untitled.tex  +++ b/untitled.tex 
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Alternatively \begin{equation}  (A)_{ij}^{-1}=|R_{ij}J^{(i+j-1)}| (A^{-1})_{ij}=|R_{ij}J^{(i+j-1)}|  \end{equation}