Proof of `Deep chain, link 5 of 9`
What this proof establishes
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
Link 5 follows from link 4.
Proof strategy
Apply the previous link and weaken one rung.
Attribution
Synthetic: written for this benchmark. The mathematics is a one-line divisibility weakening; only the shape of the dependency edges is the point.