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Proof step 3 from proof same-subclasses-contains-tdnameex (previous step)

tdname+∃(str0, class), same-subclasses-contains(class, str, str0) ⊦ tdname∃(str, class) ∨ is_predefined_class(class)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 2:
⊦ tdname∃(str0, class) ∧ ¬ tdname∃(str, class) → ¬ same-subclasses-contains(class, str, str0)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ ¬ is_predefined_class(class) → ( tdname+∃(str, class) ↔ tdname∃(str, class))])]]