deletions | additions       diff --git a/Definition of time-dependent rate coefficient.tex b/Definition of time-dependent rate coefficient.tex  index 8831216..14f4a70 100644  --- a/Definition of time-dependent rate coefficient.tex  +++ b/Definition of time-dependent rate coefficient.tex 
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We define $k(t)$ from the appropriate survival function and rate law  \begin{equation}  k_i(t) \equiv \frac{d}{dt}\frac{1}{S(t)^{i-1}}. \frac{d}{dt}\frac{1}{S(t)^{i-1}}\quad\quad\textrm{for}\quad i=2,3,\ldots.  \end{equation}