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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: s, ls,
Comment:
Used by: toinfto-append-add,
Used by units in proved state:
Proof exists?: Yes

View the proof

Infos about the proof

Proved?: Yes
Interactions: 1
Proof steps: 3
Used lemmas: to-zero, to-to-eq, size-to, size-to-02, append-assoc, to-fin, append-le-to, append-gr-to,
Used spec theorems:
- Used simplifier rules: