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Gaussian q-distribution : ウィキペディア英語版
Gaussian q-distribution

In mathematical physics and probability and statistics, the Gaussian ''q''-distribution is a family of probability distributions that includes, as limiting cases, the uniform distribution and the normal (Gaussian) distribution. It was introduced by Diaz and Teruel, is a q-analogue of the Gaussian or normal distribution.
The distribution is symmetric about zero and is bounded, except for the limiting case of the normal distribution. The limiting uniform distribution is on the range -1 to +1.
==Definition==

Let ''q'' be a real number in the interval ''q'' of the real number t is given by
: ()_q=\frac.
The ''q''-analogue of the exponential function is the q-exponential, ''E'', which is given by
: E_q^=\sum_^q^\frac
where the ''q''-analogue of the factorial is the q-factorial, ()''q''!, which is in turn given by
: ()_q!=()_q()_q\cdots ()_q \,
for an integer ''n'' > 2 and ()''q''! = ()''q''! = 1.
The cumulative distribution function of the Gaussian ''q''-distribution is given by
: G_q(x) = \begin 0 & \text x < -\nu \\()
\displaystyle \frac\int_^ E_^ \, d_qt & \text -\nu \leq x \leq \nu \\()
1 & \text x>\nu
\end
where the integration symbol denotes the Jackson integral.
The function ''G''''q'' is given explicitly by
: G_q(x)= \begin 0 & \text x < -\nu, \\
\displaystyle \frac + \frac \sum_^\infty \frac^}x^ & \text -\nu \leq x \leq \nu \\
1 & \text\ x > \nu
\end
where
: (a+b)_q^n=\prod_^(a+q^ib) .

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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