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Recently Referred Formulae

\kappa^{-1}= \sqrt{\frac{\varepsilon_{m}k_{B}T}{2n_{ion}Z^{2}e^{2}}}
k_r \simeq F_0 + (1 - F_0)(1 - \cos\theta_i)^5 , F_0 = \frac{(\eta - 1)^2}{(\eta + 1)^2}
r_{||} = \frac{\eta\cos\theta_i - \cos\theta_t}{\eta\cos\theta_i + \cos\theta_t}
a_n = \frac{n!}{\sqrt{2\pi}n^{n+1/2}e^{-n+1/(12n)}}\\
b_n = \frac{n!}{\sqrt{2\pi}n^{n+1/2}e^{-n}}
\phi(\overline{X}_n)\equiv\left\{\begin{array}{cc} 1 & \mu\in I(\overline{X}_n)\\ 
                                 0 & \mu\notin I(\overline{X}_n)\end{array}\right.