HurwitzZeta.differentiable_cosZeta_of_ne_zero

∀ {a : UnitAddCircle}, a ≠ 0 → Differentiable ℂ (HurwitzZeta.cosZeta a)

If a ≠ 0 then the cosine zeta function is entire.

Defined in: Mathlib.NumberTheory.LSeries.HurwitzZetaEven
Cited by: 0 results in Mathlib
Foundations: Depth 303 from the axioms · uses propext, Classical.choice, Quot.sound

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