deletions | additions       diff --git a/section_begin_enumerate_item_item__.tex b/section_begin_enumerate_item_item__.tex  index e9b4cbe..716194a 100644  --- a/section_begin_enumerate_item_item__.tex  +++ b/section_begin_enumerate_item_item__.tex 
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\begin{equation}  \begin{aligned}  \rho &= \rho(T,s) \\  \frac{dT}{dt} = \chi_{\perp} \Delta{\perp} T + \frac{\partail}{\partial z} \frac(\chi_z \left(\chi_z  \frac{\partial T}{\partial z}\frac) z}\right)  \end{aligned}  \end{equation}