AddChar.doubleDualEquiv

{α : Type u_1} → [inst : AddCommGroup α] → [Finite α] → α ≃+ AddChar (AddChar α ℂ) ℂ

The double dual isomorphism of a finite abelian group.

Defined in: Mathlib.Analysis.Fourier.FiniteAbelian.PontryaginDuality
Cited by: 3 results in Mathlib
Foundations: Depth 244 from the axioms · uses propext, Classical.choice, Quot.sound
Assumes: AddCommGroup Finite

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