deletions | additions       diff --git a/header.tex b/header.tex  index 2b02810..5a3d22f 100644  --- a/header.tex  +++ b/header.tex 
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\usepackage{amsmath, amssymb,amsthm} \usepackage{amsmath,amssymb,amsthm}  \usepackage{enumerate}  \theoremstyle{definition}