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Step * of Lemma sdata-left_wf

∀[p:SecurityData]. sdata-left(p) ∈ SecurityData supposing ↑sdata-pair?(p)
BY
{ (Unfold `sdata` 0 THEN ProveWfLemma) }

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Latex:

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Latex:
\mforall{}[p:SecurityData].  sdata-left(p)  \mmember{}  SecurityData  supposing  \muparrow{}sdata-pair?(p)


By

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Latex:
(Unfold  `sdata`  0  THEN  ProveWfLemma)

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