deletions | additions       diff --git a/F_Delta_t_begin_cases__.tex b/F_Delta_t_begin_cases__.tex  index 4ebf0f7..648213f 100644  --- a/F_Delta_t_begin_cases__.tex  +++ b/F_Delta_t_begin_cases__.tex 
...
$F(\Delta t) = \begin{cases} g_{ex} A_{+} e^{−\Delta t/τ+}\:\mathrm{for\:\Delta t <0}\\A_ <0}\\A-  (DA) e^{−\Delta t/τ+}\:\mathrm{for\:\Delta t > 0}\} \end{cases}$