Step
*
of Lemma
manames-overlap-case_wf
∀[T:Type]. ∀[x,y:T]. ∀[nms1,nms2:MaName List].  (if nms1 and nms2 overlap then x else y fi ∈ T)
BY
{ (Unfold `manames-overlap-case` 0 THEN Auto) }
Latex:
\mforall{}[T:Type].  \mforall{}[x,y:T].  \mforall{}[nms1,nms2:MaName  List].    (if  nms1  and  nms2  overlap  then  x  else  y  fi  \mmember{}  T)
By
(Unfold  `manames-overlap-case`  0  THEN  Auto)
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