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Theorem rev-disjoint

⊦ disj(x, rev(y)) ↔ disj(x, y)

Type: A user defined theorem
Validity: The proof is valid.
Features: simp, localsimp,
Comment:
Used by:
Used by units in proved state:
Proof exists?: Yes

View the proof

Infos about the proof

Proved?: Yes
Interactions: 0
Proof steps: 5
Used lemmas: rev-disjoint-01, rev-r, rev-e,
Used spec theorems:
- Used simplifier rules:
  - list-dup/e
  - list/Last
  - list/c
  - list-dup/first
  - list-dup/sym
  - list-dup/last
  - list/a
  - list-dup/one-01
  - list-dup/app-02