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~ & \text{if } ~ \xi \neq 0 ~~ \text{ and } ~~ \xi < \tfrac{1}{3} \\ \dfrac{12 \sqrt{6} \, \zeta(3)}{\pi^3} ~~ & \text{if } ~~ \xi = 0 \end{cases}
where is the sign function
and is the Riemann zeta function | kurtosis = | entropy = | mgf = see | char = see }}

In probability theory and statistics, the generalized

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