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Theorem same-subclasses-subclass

⊦ same-subclasses(class, str, str0) ∧ class0 ≤ class → same-subclasses(class0, str, str0)

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: 10
Used lemmas: same-subclasses-one-def,
Used spec theorems:
- Used simplifier rules:
  - classnamefuns/le-transitive