Q-Analogue of a Two Variable Inverse Pair of Series with Applications to Basic Double Hypergeometric Series

Abstract

Let be a pair of a formal series (fps) in z1 and z2 of the form where is an fps with for i = 1,2. Then there exists a unique pair of fps which is also of the form (1.1), with This pair is called the inverse of f(z1,z2 ).