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Theorem notMember-onewriter-contra

⊦ notMember(t, tsf) → ¬ oneMember(t, l, tsf)

Type: A user defined theorem
Validity: The proof is valid.
Features: as, las,
Comment:
Used by: onemember-nowriter-contra,
Used by units in proved state: FLITPSCweak-refines-PLIB, FLIT-refines-FLITPSCweak,
Proof exists?: Yes

View the proof

Infos about the proof

Proved?: Yes
Interactions: 0
Proof steps: 2
Used lemmas: notMember-not-in, oneWriter,
Used spec theorems:
- Used simplifier rules: