Rank recursion for $q$-Whittaker and Macdonald operators

Abstract

In this paper, we introduce and prove a set of rank recurrence relations for $q$-Whittaker and Macdonald operators. We also derive an explicit expression for the $k$-th power of the $q$-Whittaker operators in terms of the $q$-deformed binomial probability distribution, and we express the rank recurrence relations for the Macdonald operators in terms of the Cauchy determinant.