deletions | additions       diff --git a/Magnetic response.tex b/Magnetic response.tex  index 8b58aeb..8978b28 100644  --- a/Magnetic response.tex  +++ b/Magnetic response.tex 
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%  \begin{equation}  \label{eq:mag2}  \delta^2\hat{v}_{ij}^{\mathrm{mag}} = \frac1{8c^2}(\delta_{ij}r^2 - r_i r_j})\ r_j)\  . \end{equation}  The induced magnetic moment can be expanded in terms of the external magnetic field which, to first order, reads