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Step * of Lemma pairset_wf2

∀[a,b:Set{i:l}].  ({a,b} ∈ Set{i:l})
BY
{ ProveWfLemma }

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Latex:

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Latex:
\mforall{}[a,b:Set\{i:l\}].    (\{a,b\}  \mmember{}  Set\{i:l\})


By

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Latex:
ProveWfLemma

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