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Theorem prefix-rec

⊦ x ≠ [] → (x ⊑ a ' + y ↔ x.first = a ∧ x.rest ⊑ y)

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

View the proof

Infos about the proof

Proved?: Yes
Interactions: 0
Proof steps: 2
Used lemmas: prefix-rec-03,
Used spec theorems:
- Used simplifier rules:
  - list/c
  - list/a
  - list/e-01
  - list-data/elim-list-c