Formula:KLS:14.15:15

<< Formula:KLS:14.15:14

formula in q-Krawtchouk

Formula:KLS:14.15:17 >>

${\displaystyle{\displaystyle{\displaystyle\frac{\nabla\left[w(x;p,N;q)K_{n}\!\left(q^{-x};p,N;q\right)\right]}{\nabla q^{-x}}{}=\frac{1}{1-q}w(x;pq^{-2},N+1;q)K_{n+1}\!\left(q^{-x};pq^{-2},N+1;q\right)}}}$

Substitution(s)

${\displaystyle{\displaystyle{\displaystyle w(x;p,N;q)=\frac{\left(q^{-N};q\right)_{x}}{\left(q;q\right)_{x}}\left(-\frac{q}{p}\right)^{x}}}}$

Proof

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Symbols List

${\displaystyle{\displaystyle{\displaystyle K_{n}}}}$ : ${\displaystyle{\displaystyle{\displaystyle q}}}$-Krawtchouk polynomial : http://drmf.wmflabs.org/wiki/Definition:qKrawtchouk
${\displaystyle{\displaystyle{\displaystyle(a;q)_{n}}}}$ : ${\displaystyle{\displaystyle{\displaystyle q}}}$-Pochhammer symbol : http://dlmf.nist.gov/5.18#i http://dlmf.nist.gov/17.2#SS1.p1

Bibliography

Equation in Section 14.15 of KLS.

URL links

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<< Formula:KLS:14.15:14

formula in q-Krawtchouk

Formula:KLS:14.15:17 >>