ModularForm.discriminant_cuspFunction_eqOn

Set.EqOn (UpperHalfPlane.cuspFunction 1 ModularForm.discriminant) (fun q => q * ∏' (i : ℕ), (1 - q ^ (i + 1)) ^ 24)
  (Metric.ball 0 1)

The cusp function of the discriminant equals q * ∏' n, (1 - q^(n+1))^24 on the open unit disc.

Defined in: Mathlib.NumberTheory.ModularForms.Discriminant
Cited by: 1 results in Mathlib
Foundations: Depth 287 from the axioms · uses propext, Classical.choice, Quot.sound

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