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Step * of Lemma Play_wf

∀[Pos:Type]. ∀[Mv:Pos ⟶ Type].  (Play(Pos;a.Mv[a]) ∈ Type)
BY
{ ProveWfLemma }

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Latex:

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Latex:
\mforall{}[Pos:Type].  \mforall{}[Mv:Pos  {}\mrightarrow{}  Type].    (Play(Pos;a.Mv[a])  \mmember{}  Type)


By

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Latex:
ProveWfLemma

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