Step
*
of Lemma
msg-header_wf
∀[f:Name ─→ Type]. ∀[m:Message(f)].  (msg-header(m) ∈ Name)
BY
{ ProveWfLemma }
Latex:
Latex:
\mforall{}[f:Name  {}\mrightarrow{}  Type].  \mforall{}[m:Message(f)].    (msg-header(m)  \mmember{}  Name)
By
Latex:
ProveWfLemma
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