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Theorem k-le-r

⊦ ordered≤(y) ↔ # y ≤ 1 ∨ ¬ y.rest.first < y.first ∧ ordered≤(y.rest)

Type: A user defined theorem
Validity: The proof is valid.
Features: kodkodax,
Comment:
Used by: ordered-append, ordered-postfix, ordered-prefix,
Used by units in proved state: olist-min-max,
Proof exists?: Yes

View the proof

Infos about the proof

Proved?: Yes
Interactions: 0
Proof steps: 4
Used lemmas: le-r, app-01, le-o, le-e,
Used spec theorems:
- Used simplifier rules: