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Step * of Lemma symmetric-key_wf

∀[a:Atom1]. (symmetric-key(a) ∈ Key)
BY
{ (Unfold `encryption-key` 0 THEN ProveWfLemma) }

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Latex:

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Latex:
\mforall{}[a:Atom1].  (symmetric-key(a)  \mmember{}  Key)


By

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Latex:
(Unfold  `encryption-key`  0  THEN  ProveWfLemma)

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