diff -r 1734bd5975a3 -r 4969ef817d92 ChengsongTanPhdThesis/main.tex
--- a/ChengsongTanPhdThesis/main.tex	Tue Aug 23 22:59:49 2022 +0100
+++ b/ChengsongTanPhdThesis/main.tex	Sat Aug 27 00:37:03 2022 +0100
@@ -42,6 +42,8 @@
 \usepackage[T1]{fontenc} % Output font encoding for international characters
 %\usepackage{fdsymbol} % Loads unicode-math
 
+\usepackage{cancel}
+
 \usepackage{verbatim}
 \usepackage{float}
 \usepackage{mathpazo} % Use the Palatino font by default