From f5d5b38a0dc05e28be713626309939373ef33a85 Mon Sep 17 00:00:00 2001
From: Hedongliang Liu <uniquelhdl@gmail.com>
Date: Wed, 3 Sep 2025 10:02:38 +0200
Subject: [PATCH] added mathtools package

---
 preambles/packages.tex | 1 +
 1 file changed, 1 insertion(+)

diff --git a/preambles/packages.tex b/preambles/packages.tex
index b04f6df..664fe95 100644
--- a/preambles/packages.tex
+++ b/preambles/packages.tex
@@ -8,6 +8,7 @@
 
 % Math stuff
 \usepackage{amsmath,amssymb,amsthm}
+\usepackage{mathtools} % extends amsmath
 \usepackage{bbm}
 \usepackage{dsfont} % more blackboard bold symbols like digits and lowercase letters
 \usepackage{bm} % bold math symbols