Step
*
of Lemma
class-only-headers_wf
∀[f:Name ─→ Type]. ∀[hdrs:Name List]. ∀[X:EClass(Interface)].  (class-only-headers{i:l}(f;hdrs;X) ∈ ℙ')
BY
{ ProveWfLemma }
Latex:
Latex:
\mforall{}[f:Name  {}\mrightarrow{}  Type].  \mforall{}[hdrs:Name  List].  \mforall{}[X:EClass(Interface)].
    (class-only-headers\{i:l\}(f;hdrs;X)  \mmember{}  \mBbbP{}')
By
Latex:
ProveWfLemma
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