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Theorem elim-fromto-inf

⊦ x0 = nf to n ∧ nf0 = nf from n ↔ nf = (⌜x0⌝ + ⌜nf0⌝ ).f ∧ # x0 = n

Type: A user defined theorem
Validity: The proof is valid.
Features:
Comment:
Used by: to-empty-inf, to-plus-from-inf,
Used by units in proved state:
Proof exists?: Yes

View the proof

Infos about the proof

Proved?: Yes
Interactions: 2
Proof steps: 3
Used lemmas: append-fininf, size-fin, from-inf, to-inf, size-inf, elim-fromto,
Used spec theorems:
- Used simplifier rules: