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Step * of Lemma coSet_subtype

coSet{i:l} ⊆r (T:Type × (T ⟶ coSet{i:l}))
BY
{ ((InstLemma `coW-ext` [⌜parm{i'}⌝;⌜Type⌝;⌜λ2T.T⌝]⋅ THENA Auto) THEN Fold `coSet` (-1) THEN Auto) }

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Latex:

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Latex:
coSet\{i:l\}  \msubseteq{}r  (T:Type  \mtimes{}  (T  {}\mrightarrow{}  coSet\{i:l\}))


By

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Latex:
((InstLemma  `coW-ext`  [\mkleeneopen{}parm\{i'\}\mkleeneclose{};\mkleeneopen{}Type\mkleeneclose{};\mkleeneopen{}\mlambda{}\msubtwo{}T.T\mkleeneclose{}]\mcdot{}  THENA  Auto)  THEN  Fold  `coSet`  (-1)  THEN  Auto)

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