The continuous dual Hahn polynomials can be found from the Wilson polynomials
defined by (1.1.1) by dividing by and letting :
where is defined by (1.3.1).
The Meixner-Pollaczek polynomials given by (1.7.1) can be obtained from the continuous dual Hahn polynomials
by the substitutions , , and in the definition
(1.3.1) and the limit :