Step
*
of Lemma
pvar-name_wf
∀[v:formula()]. pvar-name(v) ∈ Atom supposing ↑pvar?(v)
BY
{ DepprodCoDatatypeSelectorWf }
Latex:
Latex:
\mforall{}[v:formula()].  pvar-name(v)  \mmember{}  Atom  supposing  \muparrow{}pvar?(v)
By
Latex:
DepprodCoDatatypeSelectorWf
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