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Theorem del-rev

⊦ rev(x) -l a = rev(x -l a)

Type: A user defined theorem
Validity: The proof is valid.
Features:
Comment:
Used by: del-rev-01,
Used by units in proved state: list-perm,
Proof exists?: Yes

View the proof

Infos about the proof

Proved?: Yes
Interactions: 3
Proof steps: 12
Used lemmas: in-03, del-n, one, del-append, del-y, del-e,
Used spec theorems:
- Used simplifier rules:
  - list-last/rev-e
  - list/c
  - list/app
  - list/Last
  - list-last/rev-r
  - list/in-17
  - list/a
  - list/app-03