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Theorem from-from

⊦ ¬ # σ < ⌜m + n⌝ → σ from m from n = σ from m + n

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

View the proof

Infos about the proof

Proved?: Yes
Interactions: 5
Proof steps: 11
Used lemmas: get-from-inf, from-nf, size-inf, from-inf, from-succ-cons-l-lem, from-zero-l, size-fin, from-fin,
Used spec theorems:
- Used simplifier rules: