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Step * 1 of Lemma setmem-emptyset


1. x : coSet{i:l}
2. ∃x1:Void. seteq(x;⋅)
⊢ False
BY
{ (ExRepD THEN Auto) }

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Latex:

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Latex:

1.  x  :  coSet\{i:l\}
2.  \mexists{}x1:Void.  seteq(x;\mcdot{})
\mvdash{}  False


By

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Latex:
(ExRepD  THEN  Auto)

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