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Theorem del

⊦ mk(rs -- r, f) = mk(rs, f) -- r

Type: A user defined theorem
Validity: The proof is valid.
Features: ls,
Comment:
Used by: map-del, mapex-del,
Used by units in proved state: heap-aux,
Proof exists?: Yes

View the proof

Infos about the proof

Proved?: Yes
Interactions: 1
Proof steps: 4
Used lemmas: at-mk, in-mk,
Used spec theorems:
- heap/ext
Used simplifier rules:
- heap/at-del
- set-union/refset/Delete
- heap/in-del
- set-union/refset/del-in-01