Proof of `Fourier shifts, odd tables and disagreement indicators` (4th statement)
groundedproofs/Lax323828Proofs/FourierIdentities.lean · lax-323828
What this proof establishes
no assumptions
Assuming the claims on the left, the claim on the right holds — checked by the archive's pipeline. Proof code is not displayed here.
Description
Pair every input with its bitwise complement. For an even support its character is unchanged, whereas the table value changes sign.