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Theorem eq-05

⊦ ∅ ++ a ++ b = ∅ ++ b ++ a ↔ true

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

View the proof

Infos about the proof

Proved?: Yes
Interactions: 0
Proof steps: 1
Used lemmas: eq-04,
Used spec theorems:
- Used simplifier rules: