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Theorem one-inf

⊦ str ' ∈ fnode(fid) ↔ false

Type: A user defined theorem
Validity: The proof is valid.
Features: s, ls,
Comment:
Used by: again-put, at-del, dnode-onein, in-del, same-at, same-in, same-put, split-at, split-del, split-put,
Used by units in proved state: directory-tree-fids,
Proof exists?: Yes

View the proof

Infos about the proof

Proved?: Yes
Interactions: 0
Proof steps: 1
Used lemmas: fnode-notin,
Used spec theorems:
- Used simplifier rules:
  - list/path/e