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Theorem from-to-exchange

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

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

View the proof

Infos about the proof

Proved?: Yes
Interactions: 3
Proof steps: 5
Used lemmas: size-fin, size-append, from-succ-cons, append-assoc, to-succ-cons, cons-append, size-empty, elim-hd-tl, from-zero,
Used spec theorems:
- Used simplifier rules: