Proof of `Formal forward and reverse rows of a unary mixer test` (8th statement)
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
Apply the four-term binary polar operator to the actual atom test. Its affine expansion cancels both the constant tester value and the non-Z shift, leaving exactly the formal polar form pulled back along the fixed Z row map.