3.19 Continuous q-Laguerre

Definitions. The continuous q-Laguerre polynomials can be obtained from the continuous q-Jacobi polynomials defined by (3.10.1) by taking the limit :

 

Orthogonality. For we have

 

where

with

Recurrence relations.

 

Normalized recurrence relations.

 

where

q-Difference equations.

 

where

Forward shift operator.

 

or equivalently

 

Backward shift operator.

 

or equivalently

 

Rodrigues-type formula.

 

Generating functions.

 

 

 

 

Remark. If we let tend to infinity in (3.10.14) and renormalize we obtain

 

These two q-analogues of the Laguerre polynomials are connected by the following quadratic transformation :

Reference. [64].




Last modified on July 6, 1998