Lax Lean Archive

Draft — mutable and not usable as a dependency; its citation marks the draft state.

Proof of `Ladders are grids`

groundedproofs/Lax68Proofs/Relationships.lean · lax-68

What this proof establishes

no assumptions

thm✓Lax68.LadderGrid

Assuming the claims on the left, the claim on the right holds — checked by the archive's pipeline. Proof code is not displayed here.

Read the Lean proof on GitHub

Description

Every ladder is a two-row grid.