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Theorem at-del-ri

⊦ (ri -- key0)[key1] = (key0 = key1 ⊃ (∅)[key0];ri[key1])

Type: A user defined theorem
Validity: The proof is valid.
Features: ls,
Comment:
Used by: inv-evict, inv-rename-new-keep-parent, inv-rename-new-reparent, inv-rename-overwrite-keep-parent, inv-rename-overwrite-reparent, inv-rmdir, inv-unlink, replayorphans-prepost,
Used by units in proved state:
Proof exists?: Yes

View the proof

Infos about the proof

Proved?: Yes
Interactions: 0
Proof steps: 2
Used lemmas:
Used spec theorems:
- Used simplifier rules:
  - store/node-index/Del-at
  - store/node-index/lookupisempty