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Theorem perm-common-prefix

⊦ perm(x, y + z1) → (perm(x, y + z2) ↔ perm(z1, z2))

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

View the proof

Infos about the proof

Proved?: Yes
Interactions: 2
Proof steps: 5
Used lemmas: a, sym-02, ref, app-beg-beg, sym-01, trans,
Used spec theorems:
- Used simplifier rules:
  - list/a