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Theorem frag-from-1

⊦ frag(IOAut(start, step, ext))(σ, α) ∧ ¬ # α < ⌜n⌝ → (frag(IOAut(start, step, ext))(σ.drop(n), α.drop(n)) ↔ true)

Type: A user defined theorem
Validity: The proof is valid.
Features: ss, lss,
Comment:
Used by: frag-from, frag-from-inf,
Used by units in proved state: product-refine,
Proof exists?: Yes

View the proof

Infos about the proof

Proved?: Yes
Interactions: 8
Proof steps: 17
Used lemmas: frag, frag-size,
Used spec theorems:
- stream/get-append-notls
Used simplifier rules: