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Step * of Lemma bag-member-empty-weak

∀[T:Type]. ∀[x:T].  (x ↓∈ {} ⇐⇒ False)
BY
{ (Auto THEN FLemma `bag-member-empty` [-1] THEN Auto) }

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Latex:

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Latex:
\mforall{}[T:Type].  \mforall{}[x:T].    (x  \mdownarrow{}\mmember{}  \{\}  \mLeftarrow{}{}\mRightarrow{}  False)


By

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Latex:
(Auto  THEN  FLemma  `bag-member-empty`  [-1]  THEN  Auto)

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