Al-Salam–Carlitz polynomials explained

Al-Salam–Carlitz polynomials should not be confused with Al-Salam–Chihara polynomials.

In mathematics, Al-Salam–Carlitz polynomials U(x;q) and V(x;q) are two families of basic hypergeometric orthogonal polynomials in the basic Askey scheme, introduced by . give a detailed list of their properties.

Definition

The Al-Salam–Carlitz polynomials are given in terms of basic hypergeometric functions by

(a)
U
n

(x;q)=(-a)nqn(n-1)/2{}2\phi

-n
1(q

,x-1;0;q,qx/a)

(a)
V
n

(x;q)=(-a)nq-n(n-1)/2{}2\phi

-n
0(q

,x;-;q,qn/a)

Further reading

q

-integral representation of the Al-Salam–Carlitz polynomials. Applied Mathematics Letters, 22(6), 943-945.

q

-harmonic oscillator and the Al-Salam and Carlitz polynomials. Letters in Mathematical Physics, 29(2), 123-132.

q

–Dunkl Kernel. Mathematische Nachrichten, 212(1), 5-35.