deletions | additions       diff --git a/header.tex b/header.tex  index bb52b55..a67b3bf 100644  --- a/header.tex  +++ b/header.tex 
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\usepackage[]{amsthm}  \usepackage[]{amsmath}  \usepackage[]{amssymb}  \usepackage{enumerate}  \newtheorem{definition}{\textbf{Definici\'on}}[section]