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Theorem remtau-split-list-fin

⊦ el ≠ [] → (ext !(al) = el ↔ (∃ al0, al1. al = al0 + al1 ∧ al0 ≠ [] ∧ ext !(al0) = el ∧ Some(el.last) = ext(al0.last) ∧ ext !(al1) = []))

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

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Infos about the proof

Proved?: Yes
Interactions: 1
Proof steps: 2
Used lemmas: remtau-split-fin,
Used spec theorems:
- Used simplifier rules: