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Step * of Lemma test-xx?_wf

∀[x:test-foo()]. (test-xx?(x) ∈ 𝔹)
BY
{ ProveWfLemma }

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Latex:

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Latex:
\mforall{}[x:test-foo()].  (test-xx?(x)  \mmember{}  \mBbbB{})


By

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Latex:
ProveWfLemma

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