Proof of `Middle of an open chain`
conditional — 1 open assumptionproofs/Lax771644Proofs/OpenMiddle.lean · lax-771644
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
Follows from the open root statement.
Proof strategy
Apply the open statement and weaken one further 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.