The first line should not have math equations, since the front page does not include use_math: true.
The main reference is link 1 and link 2.
Let’s test some inline math $x$, $y$, $x_1$, $y_1$.
Now a inline math with special character: $\psi$, $x’$, $x^*$.
Test a display math: \(|\psi_1\rangle = a|0\rangle + b|1\rangle\) Is it O.K.?
Test a display math with equation number: \begin{equation} |\psi_1\rangle = a|0\rangle + b|1\rangle \end{equation} Is it O.K.?
Test a display math without equation number: \begin{equation*} A_{k,k}=S_k+M_k \end{equation*} Is it O.K.?
Test a display math with equation number: \(\begin{align} |\psi_1\rangle &= a|0\rangle + b|1\rangle \\\\ |\psi_2\rangle &= c|0\rangle + d|1\rangle \end{align}\) Is it O.K.?
Test a display math with equation number:
\begin{align}
|\psi_1\rangle &= a|0\rangle + b|1\rangle \
|\psi_2\rangle &= c|0\rangle + d|1\rangle
\end{align}
Is it O.K.?
And test a display math without equaltion number:
\begin{align*}
|\psi_1\rangle &= a|0\rangle + b|1\rangle \
|\psi_2\rangle &= c|0\rangle + d|1\rangle
\end{align*}
Is it O.K.?