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Step * 1 of Lemma concat-map-map-decide


1. T : Type
2. g : Top
⊢ ∀[f:{x:T| (x ∈ [])}  ⟶ (Top + Top)]. ([] ~ [])
BY
{ Auto }

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Latex:

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Latex:

1.  T  :  Type
2.  g  :  Top
\mvdash{}  \mforall{}[f:\{x:T|  (x  \mmember{}  [])\}    {}\mrightarrow{}  (Top  +  Top)].  ([]  \msim{}  [])


By

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Latex:
Auto

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