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Theorem nuni-01

⊦ unique_al(ay + (a × d)' + az) → ¬ a ∈ az

Type: A user defined theorem
Validity: The proof is valid.
Features: localforward,
Comment:
Used by: lenequal, nuni, unique-03, unique-04, uniquelen,
Used by units in proved state:
Proof exists?: Yes

View the proof

Infos about the proof

Proved?: Yes
Interactions: 1
Proof steps: 6
Used lemmas: inone, inapp, cons,
Used spec theorems:
- Used simplifier rules:
  - list/assoclista/Nil
  - list/assoclista/c
  - list/assoclista/a