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Theorem unique-elems-subset

⊦ bag0 ⊆ bag1 ∧ unique-elems(bag1) → unique-elems(bag0)

Type: A user defined theorem
Validity: The proof is valid.
Features: ss, lss,
Comment:
Used by: unique-elems-rem,
Used by units in proved state: ubi-base,
Proof exists?: Yes

View the proof

Infos about the proof

Proved?: Yes
Interactions: 5
Proof steps: 8
Used lemmas: unique-elems,
Used spec theorems:
- bag-union/nat-bag/count-subset
Used simplifier rules:
- nat-basic/one
- nat/le-def
- nat/let
- nat/one-02