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Step * of Lemma tunion-value-type

∀[A:Type]. ∀[B:A ⟶ Type].  value-type(⋃a:A.B[a]) supposing ∀a:A. value-type(B[a])
BY
{ ValueTypeAuto }

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Latex:

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Latex:
\mforall{}[A:Type].  \mforall{}[B:A  {}\mrightarrow{}  Type].    value-type(\mcup{}a:A.B[a])  supposing  \mforall{}a:A.  value-type(B[a])


By

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Latex:
ValueTypeAuto

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