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Gaussian q-distribution

From Wikipedia, the free encyclopedia

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,[clarification needed] 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.

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The Gaussian q-density.
The Gaussian q-density.

Let q be a real number in the interval [0, 1). The probability density function of the Gaussian q-distribution is given by


The q-analogue [t]q of the real number is given by

The q-analogue of the exponential function is the q-exponential, Ex
, which is given by

where the q-analogue of the factorial is the q-factorial, [n]q!, which is in turn given by

for an integer n > 2 and [1]q! = [0]q! = 1.

The Cumulative Gaussian q-distribution.
The Cumulative Gaussian q-distribution.

The cumulative distribution function of the Gaussian q-distribution is given by

where the integration symbol denotes the Jackson integral.

The function Gq is given explicitly by



The moments of the Gaussian q-distribution are given by

where the symbol [2n − 1]!! is the q-analogue of the double factorial given by

See also


  • Díaz, R.; Pariguan, E. (2009). "On the Gaussian q-distribution". Journal of Mathematical Analysis and Applications. 358: 1. arXiv:0807.1918. doi:10.1016/j.jmaa.2009.04.046.
  • Diaz, R.; Teruel, C. (2005). "q,k-Generalized Gamma and Beta Functions" (PDF). Journal of Nonlinear Mathematical Physics. 12 (1): 118–134. arXiv:math/0405402. Bibcode:2005JNMP...12..118D. doi:10.2991/jnmp.2005.12.1.10.
  • van Leeuwen, H.; Maassen, H. (1995). "A q deformation of the Gauss distribution" (PDF). Journal of Mathematical Physics. 36 (9): 4743. Bibcode:1995JMP....36.4743V. CiteSeerX doi:10.1063/1.530917.
  • Exton, H. (1983), q-Hypergeometric Functions and Applications, New York: Halstead Press, Chichester: Ellis Horwood, 1983, ISBN 0853124914, ISBN 0470274530, ISBN 978-0470274538

This page was last edited on 4 December 2019, at 02:54
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