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\overline{X}_n\equiv\frac{1}{n}\sum^n_{i=1}X_i, \quad \tilde{\sigma}^2_n\equiv\frac{1}{n-1}\sum^n_{i=1}(X_i - \overline{X}_n)^2\\
T_s\equiv\displaystyle\frac{\sqrt{n}(\overline{X}_n - \mu)}{\tilde{\sigma}_n}  \\
f(x)=
N=\int_{0}^{p_{F}}\frac{d^{3}xd^{3}p}{h}=\frac{4\pi V}{3h}p_{F}^{3}
F = \frac{G M \Delta m}{r^2} - \Delta m r \omega^2
I_{D}