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Theorem unchanged-levelsubset-equiv

⊦ ¬ junkref(str, r, st) ∧ level⊆(str, str0) → (unchanged(str, r, st, st0) ↔ unchanged(str0, r, st, st0))

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: 9
Proof steps: 16
Used lemmas: unchanged-symmetric, unchanged-junkref-level, unchanged-def-keep, unchanged-def, unchanged-levelsubset,
Used spec theorems:
- cyclic/pathex-levelsubset-equiv
Used simplifier rules: