deletions | additions       diff --git a/Rules.tex b/Rules.tex  index 415ed6a..e7e2555 100644  --- a/Rules.tex  +++ b/Rules.tex 
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\newcommand{\empty}{\varnothing}  \newcommand{\wp}[2]{wp\left(#1, #2\right)}  \newcommand{\if}[2]{if\left(#\right1) \newcommand{\if}[2]{if\left(#1\right)  \ \{ #2 \}} \newcommand{\else}[1]{else \ \{ #1 \}}  \newcommand{\ie}[3]{\if{#1}{#2} \ \else{#3}}  \newcommand{\a}[0]{\ \land \ }