Expanding infinite product

Question:Expanding infinite product

Posted: Mador 15 Product: Maple

February 17 2021

Consider the infinite product

(1-qⁱ)(1-qⁱz^-1)(1-q^i-1z)

For i > 0

How would I expand this into a power series in qz in Maple? Say I would like the coefficient of q⁶z²

Or how would I get the first n terms up to some order of qz?

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