Step
*
of Lemma
mk_mFOLSequentRule_wf
∀[s:mFOL-sequent()]. ∀[r:mFOLRule()].  (sBY r ∈ mFOL-sequent() × mFOLRule())
BY
{ ProveWfLemma }
Latex:
\mforall{}[s:mFOL-sequent()].  \mforall{}[r:mFOLRule()].    (sBY  r  \mmember{}  mFOL-sequent()  \mtimes{}  mFOLRule())
By
ProveWfLemma
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