deletions | additions       diff --git a/scattering 2.tex b/scattering 2.tex  index b95f403..706e6a7 100644  --- a/scattering 2.tex  +++ b/scattering 2.tex 
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Therefore, we can conclude the following: the resistivity, inversely proportional to the conductivity, has the following behaviour:  \begin{equation}  \begin{split}  \rho &= \rho_\mathrm{impurity} + A_\mathrm{qp--qp} T^2 A_\textrm{qp--qp} &T^2  \quad T \ll T_F \\ \rho &= \rho_\mathrm{impurity} + B_\mathrm{qp--ph} T B_\textrm{qp--ph} &T  \quad T \gg T_F \\ \end{split}  \end{equation}