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Theorem restrict-at-insert-tw0

⊦ (st | (s ++ a ++ b))(a) = st(a)

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

View the proof

Infos about the proof

Proved?: Yes
Interactions: 1
Proof steps: 3
Used lemmas: Diff-mems-get, Diff-get, restrict,
Used spec theorems:
- Used simplifier rules:
  - set-union/diff-add-del
  - set-union/Delete