diff --git a/main.tex b/main.tex
index b3a0f9f649ed2e1ee815a6038ddd2589dd980ff7..218ae303bfab5d5fee42842602808c1b0aa04937 100644
--- a/main.tex
+++ b/main.tex
@@ -13,7 +13,6 @@
 \newcommand{\RR}{\mathbb{R}}
 \newcommand{\chern}{\operatorname{ch}}
 \newcommand{\lcm}{\operatorname{lcm}}
-\newcommand{\gcd}{\operatorname{gcd}}
 \newcommand{\firsttilt}[1]{\mathcal{B}^{#1}}
 \newcommand{\bddderived}{\mathcal{D}^{b}}
 \newcommand{\centralcharge}{\mathcal{Z}}