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Proof step 3 from proof same-subclasses-tdnameex-01 (previous step)

class0 ≤ class, tdname+∃(str0, class0), same-subclasses(class, str, str0) ⊦ tdname∃(str, class0) ∨ is_predefined_class(class0)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 2:
⊦ ¬ tdname∃(str, class0) ∧ tdname∃(str0, class0) ∧ class0 ≤ class → ¬ same-subclasses(class, str, str0)

Rule argument

[emptyarg]

Additional information

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