feat: 增加公式字体示例

感谢 github.com/YuanshengZhao/Garamond-Math

test/chapters/Mathematics.tex

@@ -15,6 +15,14 @@ Math bold letters: $\mathbf{A}$
 Math bold italic letters: $\mathbi{A}$
 
 \section{公式示例}
+
+% Thanks to github.com/YuanshengZhao/Garamond-Math
+公式字体示例
+\[
+    \displaystyle \ointctrclockwise\mathcal{D}[x(t)]\sqrt{\frac{\displaystyle3\uppi^2-\sum_{q=0}^{\infty}(z+\hat L)^{q}\exp(\symrm{i}q^2 \hbar x)}{\displaystyle (\symsfup{Tr}\symcal{A})\left(\symbf\Lambda_{j_1j_2}^{i_1i_2}\Gamma_{i_1i_2}^{j_1j_2}\hookrightarrow\vec D\cdot \symbf P  \right)}}
+    =\underbrace{\widetilde{\left\langle \frac{\notin \emptyset}{\varpi\alpha_{k\uparrow}}\middle\vert \frac{\partial_\mu T_{\mu\nu}}{2}\right\rangle}}_{\mathrm{K}_3\mathrm{Fe}(\mathrm{CN})_6} ,\forall z \in \mathbb{R}
+\]
+
 \begin{equation}\label{eq:dewitt}
     \int \mathrm{e}^{ax} \tanh {bx} \, \mathrm{d}x =
     \begin{dcases}