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Theorem bag-rm-add-eq

⊦ (bag -- a) ++ a = bag ↔ a ∈ bag

Type: A user defined theorem
Validity: The proof is valid.
Features: simp,
Comment:
Used by:
Used by units in proved state:
Proof exists?: Yes

View the proof

Infos about the proof

Proved?: Yes
Interactions: 5
Proof steps: 7
Used lemmas: in, count-del,
Used spec theorems:
- bag-basic/extension
- bag-basic/count-insert
Used simplifier rules: