deletions | additions       diff --git a/figures/tightbinding/caption.tex b/figures/tightbinding/caption.tex  index a40e9a9..e05ff80 100644  --- a/figures/tightbinding/caption.tex  +++ b/figures/tightbinding/caption.tex 
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Site $0$ attached to a semi-infinite chain. The tunneling amplitude between the sites at the semi-infinite  chain is denoted by $t$.  All sites have a single-particle energy $\epsilon_0$