开始使用Latex写作啦！不过目前处于测试摸索阶段，欢迎提issue~

tex/contents/EN/mathematics/mathematics.tex

@@ -0,0 +1,30 @@
+\chapter{Mathematics Area}\index{Mathematics Area}
+\section{Example 1}
+
+The well known Pythagorean theorem \(x^2 + y^2 = z^2\) was 
+proved to be invalid for other exponents. 
+Meaning the next equation has no integer solutions:
+ 
+\[ x^n + y^n = z^n \]
+
+ An alternative:
+
+\begin{center}
+    \begin{math}
+        7+12+x=10
+    \end{math}
+\end{center}
+
+In physics, the mass-energy equivalence is stated 
+by the equation $E=mc^2$, discovered in 1905 by Albert Einstein.
+
+The mass-energy equivalence is described by the famous equation
+ 
+$$E=mc^2$$
+ 
+discovered in 1905 by Albert Einstein. 
+In natural units ($c$ = 1), the formula expresses the identity
+ 
+\begin{equation}
+E=m
+\end{equation}