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Theorem dnode-del

p ≠ ε ⊦ dnode(md, sdt) -- p ≠ fnode(fid)

Type: A user defined theorem
Validity: The proof is valid.
Features: s, ls,
Comment:
Used by: del-fnode, dir-del,
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: del-recnotin, del-here, del-recin,
Used spec theorems:
- Used simplifier rules:
  - list/path/e-01
  - list/path/c
  - directory-tree-base/disj
  - list/path/app
  - list/path/a