Proof of `Invariance of formulas and inductions under pebble games` (3rd statement)
groundedproofs/Lax945089Proofs/Bridge.lean · lax-945089
What this proof establishes
no assumptions
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
The library's invariance lemma, by induction on the formula.