Test latex

\(x=1\)

\[y=x+2\]

\(\infty\) \(\int_{x-x_z(t)<X_0}\) \(\frac{1}{2}\)

$k$ a n


 * $$\begin{align}

\label{def:Wns} W_n (s) &:=  \int_{[0, 1]^n} \left| \sum_{k = 1}^n \mathrm{e}^{2 \pi \mathrm{i} \, x_k} \right|^s \mathrm{d}\boldsymbol{x} \\ &= 2 \pi \end{align} $$ Appropned, $ \eqref{def:Wns} $ also hegers.

$$\begin{equation}\label{eq1} x = \sin(y) \end{equation}$$ The abel $$\ref{eq1}$$

St,

\left. \frac{\partial S(z)}{\partial z_i} \right|_{z=0} = g_i(0) = 0, $$ we ain

S(z) = \sum_{i,j=1}^n z_i z_j h_{ij}(z). $$ (1)