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Step * 1 of Lemma rec-value-list-is-rec-value


[] ∈ atomic-values() ⋃ (rec-value() × rec-value()) ⋃ (rec-value() + rec-value())
BY
{ (BUnionLeft THEN Auto) }

1
.....wf..... 
[] ∈ atomic-values()

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Latex:

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Latex:

[]  \mmember{}  atomic-values()  \mcup{}  (rec-value()  \mtimes{}  rec-value())  \mcup{}  (rec-value()  +  rec-value())


By

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Latex:
(BUnionLeft  THEN  Auto)

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