∑y=-∞∞Ln(α)⁡(c⁢qy;q)⁢Lm(α)⁡(c⁢qy;q)⁢qy⁢(α+1)(-c⁢qy;q)∞=(qα+1;q)n(q;q)n⁢qn⁢h0(2)⁢δn,m,