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Theorem ordered-last3

⊦ ordered<(x0 + x + x1 + a ' + y) ∧ x ≠ [] → x.last < a

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

View the proof

Infos about the proof

Proved?: Yes
Interactions: 4
Proof steps: 7
Used lemmas: orderedls-le-attach, ordered-append-split2,
Used spec theorems:
- list-last/lapp
Used simplifier rules: