deletions | additions       diff --git a/2QEnergies.tex b/2QEnergies.tex  index b562ddb..83d3b76 100644  --- a/2QEnergies.tex  +++ b/2QEnergies.tex 
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%\renewcommand{\sfdefault}{iowa}  \newcommand{\bra}[1]{\left\langle#1\right|} \newcommand{\bra}[1]{\langle#1\right|}  \newcommand{\ket}[1]{\ensuremath{\left|#1\right\rangle}}  \newcommand{\bbra}[1]{\ensuremath{\left\langle\langle#1\right|}}  \newcommand{\kket}[1]{\ensuremath{\left|#1\right\rangle\rangle}}