Q- Pfaff-Saalschütz 항등식

개요

[GR2004] (1.7.2) q-analogue of Pfaff-Saalschutz's summation formula:<math>\, _3\phi _2\left(a,b,q^{-k};c,\frac{a b q^{1-k}}{c};q,q\right)=\frac{\left(\frac{c}{a};q\right)_k \left(\frac{c}{b};q\right)_k}{(c;q)_k \left(\frac{c}{a b};q\right)_k}</math> or:<math>\sum_{n=0}^{\infty}\frac{q^n (a;q)_n (b;q)_n \left(q^{-k};q\right)_n}{(q;q)_n (c;q)_n \left(\frac{a b q^{1-k}}{c};q\right)_n}=\frac{\left(\frac{c}{a};q\right)_k \left(\frac{c}{b};q\right)_k}{(c;q)_k \left(\frac{c}{a b};q\right)_k}</math>