02组合工具。

离散数学.tex

@@ -28,6 +28,11 @@
 \newcommand{\newnoun}[2]{
     \textbf{#1}（\textit{#2}）
 }
+\newcommand{\dif}{\mathop{}\!\mathrm{d}}
+\newcommand{\eqco}{\text{，}} % Chinese comma in equation
+\newcommand{\eqper}{\text{。}} % Chinese period in equation
+\newcommand{\toinf}{\lim \limits_{n \to \infty}}
+\newcommand{\setcom}[1]{{#1}^\mathrm{C}} % Complement Set
 
 \title{{\Huge{\textbf{离散数学}}}}
 \author{}
@@ -44,4 +49,5 @@
     \setcounter{page}{1}
     \pagenumbering{arabic}
     \include{01LetsCount.tex}
+    \include{02CombinatorialTools.tex}
 \end{document}