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Theorem not-lessto-fin

n ≤ # al ⊦ ¬ # ext !(al) < # ext !(al.take(n))

Type: A user defined theorem
Validity: The proof is valid.
Features: as, las,
Comment:
Used by: not-lessto,
Used by units in proved state:
Proof exists?: Yes

View the proof

Infos about the proof

Proved?: Yes
Interactions: 1
Proof steps: 2
Used lemmas: finremtau-append,
Used spec theorems:
- Used simplifier rules: