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Step * of Lemma oob-apply_wf

∀[A,B:Type]. ∀[X:bag(A)]. ∀[Y:bag(B)].  (oob-apply(X;Y) ∈ bag(one_or_both(A;B)))
BY
{ (ProveWfLemma THEN BLemma `single-valued-bag-if-le1` THEN Auto) }

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Latex:

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Latex:
\mforall{}[A,B:Type].  \mforall{}[X:bag(A)].  \mforall{}[Y:bag(B)].    (oob-apply(X;Y)  \mmember{}  bag(one\_or\_both(A;B)))


By

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Latex:
(ProveWfLemma  THEN  BLemma  `single-valued-bag-if-le1`  THEN  Auto)

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