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Step * of Lemma empty_support

∀[n:ℕ]. ∀[f:ℕn ⟶ ℤ].  Σ(f[x] | x < n) = 0 ∈ ℤ supposing ∀x:ℕn. (f[x] = 0 ∈ ℤ)
BY
{ TACTIC:Auto }

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Latex:

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Latex:
\mforall{}[n:\mBbbN{}].  \mforall{}[f:\mBbbN{}n  {}\mrightarrow{}  \mBbbZ{}].    \mSigma{}(f[x]  |  x  <  n)  =  0  supposing  \mforall{}x:\mBbbN{}n.  (f[x]  =  0)


By

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Latex:
TACTIC:Auto

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