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Step * of Lemma FormExists-var_wf

∀[C:Type]. ∀[v:Form(C)].  FormExists-var(v) ∈ Atom supposing ↑FormExists?(v)
BY
{ DepprodCoDatatypeSelectorWf }

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Latex:

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Latex:
\mforall{}[C:Type].  \mforall{}[v:Form(C)].    FormExists-var(v)  \mmember{}  Atom  supposing  \muparrow{}FormExists?(v)


By

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Latex:
DepprodCoDatatypeSelectorWf

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