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Step * of Lemma bag_size_single_lemma

∀x:Top. (#({x}) ~ 1)
BY
{ (UnivCD THENA Auto) }

1
1. x : Top@i
⊢ #({x}) ~ 1

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Latex:

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Latex:
\mforall{}x:Top.  (\#(\{x\})  \msim{}  1)


By

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Latex:
(UnivCD  THENA  Auto)

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