diff --git a/arxiv-style/main.tex b/arxiv-style/main.tex
index 8c8be8f..9e124a2 100644
--- a/arxiv-style/main.tex
+++ b/arxiv-style/main.tex
@@ -16,6 +16,10 @@
 \usepackage{natbib}
 \usepackage{doi}
 
+% Packages for equations
+\usepackage{amssymb}
+\usepackage{bm}
+
 % 标题
 \title{Your Paper Title: A Deep Learning Approach for Something}