diff --git a/main.tex b/main.tex
index 686c125..8d394f5 100644
--- a/main.tex
+++ b/main.tex
@@ -14,6 +14,9 @@
 \DeclareMathOperator{\cTop}{\mathcal{T}op}
 \def\Sets{\Set}
 \DeclareMathOperator{\cHom}{\mathcal{H}om}
+\def\ul{\underline}
+\def\constset#1{\underline{\{#1\}}}
+
 
 %\rawtitle{ }
 %\rawauthor{ }