deletions | additions       diff --git a/header.tex b/header.tex  index 8920b96..b62fb99 100644  --- a/header.tex  +++ b/header.tex 
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\usepackage{amsmath}  \newcommand{\Fq}{ \mathbb{F}_{q}}  \newcommand{\FF}{ \mathbb{F}}  \newcommand{\Fp}{ \mathbb{F}_{p}}