Lax Lean Archive

While this submission is a draft, it cannot be used by other submissions.

Proof of `EVEN is not first-order definable, even with an order` (3rd statement)

groundedproofs/Lax945089Proofs/Bridge.lean · lax-945089

What this proof establishes

no assumptions

thm✓Lax945089.EvenNotFirstOrder (3rd statement)

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

The library's reading of a sentence over the ordered expansion.