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Step * of Lemma mFOL-freevars_wf

∀[fmla:mFOL()]. (mFOL-freevars(fmla) ∈ ℤ List)
BY
{ ProveWfLemma }

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Latex:


\mforall{}[fmla:mFOL()].  (mFOL-freevars(fmla)  \mmember{}  \mBbbZ{}  List)


By

ProveWfLemma

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