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Theorem fr-02

⊦ x ≠ [] → x.first + x.rest = x

Type: A user defined theorem
Validity: The proof is valid.
Features: simp, localsimp,
Comment:
Used by: elim-list, fr, fr-01, fr-04, fr-05, fr-07, lfr,
Used by units in proved state: list,
Proof exists?: Yes

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Infos about the proof

Proved?: Yes
Interactions: 0
Proof steps: 2
Used lemmas: elim-list-c,
Used spec theorems:
- Used simplifier rules: