# Math Example

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$\mid \zeta -z-h\mid \le \frac{1}{2}\mid \zeta -z\mid$

${\alpha }^{2}+\sum _{i=1}^{i=n}{i}^{3}$

$\frac{1}{\sqrt{2\pi }}\int \mathrm{exp}\left(-\frac{1}{2}{x}^{2}\right)dx=1$

Inline math: $a=\frac{1}{\pi }$.

$\mathbb{\text{ℝ}}$

$\left[\begin{array}{cc}\frac{\partial {x}_{1}}{\partial {y}_{1}}& \frac{\partial {x}_{2}}{\partial {y}_{1}}\\ \frac{\partial {x}_{1}}{\partial {y}_{2}}& \frac{\partial {x}_{2}}{\partial {y}_{2}}\end{array}\right]$

$↔$

${e}^{i\pi }+1=0$