deletions | additions       diff --git a/layout.md b/layout.md  index af32c97..ed5d943 100644  --- a/layout.md  +++ b/layout.md 
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At_the_band_center_the__.tex  figures/tightbinding3pdf/tightbinding3pdf.png  section_Density_of_states_In__.tex  section_Double_dot_system_coupled__.tex