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Theorem k-unique-r

⊦ unique_al(ay) ↔ ay = [] ∨ ¬ ay.first.1 ∈ ay.rest ∧ unique_al(ay.rest)

Type: A user defined theorem
Validity: The proof is valid.
Features: simp, localsimp, kodkodax,
Comment:
Used by: app, lenle, not, one, unique, uniquelen,
Used by units in proved state:
Proof exists?: Yes

View the proof

Infos about the proof

Proved?: Yes
Interactions: 0
Proof steps: 3
Used lemmas: cons, unique-e,
Used spec theorems:
- Used simplifier rules:
  - list-data/assoclista/elim-list-c
  - list/assoclista/e-01
  - list/assoclista/c
  - list/assoclista/a
  - pair/elim