deletions | additions       diff --git a/Dirac notation.tex b/Dirac notation.tex  index 48d2f2f..2f8cecb 100644  --- a/Dirac notation.tex  +++ b/Dirac notation.tex 
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\section{Dirac Notation}  It would be a good idea to apodt adopt  Dirac notation for convenience and abstraction, \begin{equation}  \bra{2}  \end{equation}