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Step * of Lemma system-append_wf

∀[M:Type ⟶ Type]. ∀[S1,S2:System(P.M[P])].  (S1 @ S2 ∈ System(P.M[P]))
BY
{ (ProveWfLemma THEN Unfold `System` 0 THEN Auto) }

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Latex:

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Latex:
\mforall{}[M:Type  {}\mrightarrow{}  Type].  \mforall{}[S1,S2:System(P.M[P])].    (S1  @  S2  \mmember{}  System(P.M[P]))


By

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Latex:
(ProveWfLemma  THEN  Unfold  `System`  0  THEN  Auto)

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