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Theorem to-appfin

⊦ ⌜x⌝ + ⌜y⌝ to n = ⌜x + y to n⌝

Type: A user defined theorem
Validity: The proof is valid.
Features: localsimp,
Comment:
Used by: to-succ-cons, toone-cons,
Used by units in proved state:
Proof exists?: Yes

View the proof

Infos about the proof

Proved?: Yes
Interactions: 2
Proof steps: 2
Used lemmas: to-fin, append-finfin,
Used spec theorems:
- Used simplifier rules: