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Theorem unique-02

⊦ unique_al(ax) ∧ a × d ∈ ax ∧ a × d0 ∈ ax → d = d0

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

View the proof

Infos about the proof

Proved?: Yes
Interactions: 4
Proof steps: 8
Used lemmas: in-01, cons, unique-e,
Used spec theorems:
- Used simplifier rules:
  - list/assoclista/in-empty
  - list/assoclista/in-rec
  - list/assoclista/c
  - list/assoclista/a
  - pair/inj