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Theorems · Definition · harmonic analysis

UnitAddTorus.mFourierBasis

{d : Type u_1} → [inst : Fintype d] → HilbertBasis (d → ℤ) ℂ ↥(MeasureTheory.Lp ℂ 2 MeasureTheory.volume)

We define mFourierBasis to be a ℤᵈ-indexed Hilbert basis for the space of functions on UnitAddTorus d, which by definition is an isometric isomorphism from L²(UnitAddTorus d) to ℓ²(ℤᵈ, ℂ).

Defined in
Mathlib.Analysis.Fourier.AddCircleMulti
Cited by
4 results in Mathlib
Foundations
Depth 271 from the axioms · uses propext, Classical.choice, Quot.sound
Assumes
Fintype

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