deletions | additions       diff --git a/Introduction.tex b/Introduction.tex  index 4eeec6b..3c79fbb 100644  --- a/Introduction.tex  +++ b/Introduction.tex 
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\label{e.pulse_rate}  r^{t+1}_i=r^0_i(1-e^{-\gamma t}),  \end{equation}  where $\alpha\sim{\cal $\alpha,\gamma\sim{\cal  U}(0,1)$. \subsection{Firefly Algorithm}  \label{s.ffa}