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Step * of Lemma RankEx2_Union-union_wf

∀[S,T:Type]. ∀[v:RankEx2(S;T)].  RankEx2_Union-union(v) ∈ S × RankEx2(S;T) + RankEx2(S;T) supposing ↑RankEx2_Union?(v)
BY
{ DepprodCoDatatypeSelectorWf }

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Latex:


\mforall{}[S,T:Type].  \mforall{}[v:RankEx2(S;T)].
    RankEx2\_Union-union(v)  \mmember{}  S  \mtimes{}  RankEx2(S;T)  +  RankEx2(S;T)  supposing  \muparrow{}RankEx2\_Union?(v)


By

DepprodCoDatatypeSelectorWf

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