Proof of `Semirings with monus` (4th statement)

groundedproofs/Lax392996Proofs/Bridge.lean · lax-392996

What this proof establishes

no assumptions

def✓Lax392996.SemiringsWithMonus (4th 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 second equation, from the library's $monus_add$ .