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Step * of Lemma pioption-left_wf

∀[v:pi_term()]. pioption-left(v) ∈ pi_term() supposing ↑pioption?(v)
BY
{ DepprodCoDatatypeSelectorWf }

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Latex:

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Latex:
\mforall{}[v:pi\_term()].  pioption-left(v)  \mmember{}  pi\_term()  supposing  \muparrow{}pioption?(v)


By

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Latex:
DepprodCoDatatypeSelectorWf

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