Proof of `Rank-one derivative tests are scalar pairings of residual contractions` (3rd statement)
groundedproofs/Lax342547Proofs/DerivativeContractions.lean · lax-342547
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
The baseline paired with the rank-one channel value is a product of coordinate functionals. The product-test identity gives exactly the baseline evaluation of the contracted residual vector.