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Theorem to-append-add

⊦ ¬ # σ < ⌜n⌝ ∧ ¬ # σ0 < ⌜n1⌝ → (σ to n) + σ0 to n1 + n = (σ to n) + (σ0 to n1)

Type: A user defined theorem
Validity: The proof is valid.
Features: simp, localsimp,
Comment:
Used by: toinftoinf-append-add,
Used by units in proved state:
Proof exists?: Yes

View the proof

Infos about the proof

Proved?: Yes
Interactions: 2
Proof steps: 4
Used lemmas: get-append-notls, get-append-ls, get-to, append-assoc, size-to, size-append, extensionality,
Used spec theorems:
- Used simplifier rules: