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Theorem tree-le-elem-in-tree

⊦ b ∈ t ∧ t ≤ a → ¬ a < b

Type: A user defined theorem
Validity: The proof is valid.
Features: as, las,
Comment:
Used by: tree-le-elem-unfold,
Used by units in proved state:
Proof exists?: Yes

View the proof

Infos about the proof

Proved?: Yes
Interactions: 3
Proof steps: 8
Used lemmas: in-rec, tree-le-elem-rec, in-base, tree-le-elem-base,
Used spec theorems:
- Used simplifier rules:
  - oelem/nll