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Step * of Lemma bag-subtract_wf

∀[T:Type]. ∀[eq:EqDecider(T)]. ∀[bs,as:bag(T)].  (bag-subtract(eq;bs;as) ∈ bag(T))
BY
{ xxxxxx(ProveWfLemma THEN BLemma `bag-drop-commutes` THEN Auto)xxxxxx }

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Latex:

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Latex:
\mforall{}[T:Type].  \mforall{}[eq:EqDecider(T)].  \mforall{}[bs,as:bag(T)].    (bag-subtract(eq;bs;as)  \mmember{}  bag(T))


By

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Latex:
xxxxxx(ProveWfLemma  THEN  BLemma  `bag-drop-commutes`  THEN  Auto)xxxxxx

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