Proof of `Concrete coordinates, quadratic testers, and the self-Gram form` (2nd statement)
groundedproofs/Lax342547Proofs/ConcreteGeometry.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 ordered tester form has precisely the tester values on point moments. The # form vanishes on equal point inputs, since each selector difference is zero. Linearity extends this equality to their full span.