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Theorem wf-rec

⊦ wf(co ' + cl) ↔ ¬ ¬ (wf(co) ∧ wf(cl))

Type: A user defined theorem
Validity: The proof is valid.
Features: simp, localsimp,
Comment:
Used by: inv-run-gen, lemma1-gen, wf-purge,
Used by units in proved state:
Proof exists?: Yes

View the proof

Infos about the proof

Proved?: Yes
Interactions: 4
Proof steps: 11
Used lemmas: wf-def,
Used spec theorems:
- Used simplifier rules:
  - list/gen-command-list/a
  - list/gen-command-list/in-17
  - list/gen-command-list/in-append