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Step * of Lemma sum_map_nil_lemma

∀f:Top. (Σf[x] for x ∈ [] ~ 0)
BY
{ (UnivCD THENA Auto) }

1
1. f : Top@i
⊢ Σf[x] for x ∈ [] ~ 0

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Latex:

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Latex:
\mforall{}f:Top.  (\mSigma{}f[x]  for  x  \mmember{}  []  \msim{}  0)


By

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Latex:
(UnivCD  THENA  Auto)

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