deletions | additions       diff --git a/Complexity analysis.tex b/Complexity analysis.tex  index ed59618..c755c90 100644  --- a/Complexity analysis.tex  +++ b/Complexity analysis.tex 
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These summation laws/formulas are used frequently.  \begin{enumerate}  \item $\sum\limits_{i=m}^n $\displaystyle\sum_{i=m}^n  1 = n+1-m$ \end{enumerate}