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Step * 1 of Lemma nat-id-fun-example


1. n : ℕ
2. ∀n:ℕn. (∃m:ℕ [(m = n ∈ ℕ)])
3. n = 0 ∈ ℤ
⊢ ∃m:ℕ [(m = 0 ∈ ℕ)]
BY
{ TACTIC:(InstConcl [⌜0⌝]⋅ THEN Auto) }

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Latex:

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Latex:

1.  n  :  \mBbbN{}
2.  \mforall{}n:\mBbbN{}n.  (\mexists{}m:\mBbbN{}  [(m  =  n)])
3.  n  =  0
\mvdash{}  \mexists{}m:\mBbbN{}  [(m  =  0)]


By

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Latex:
TACTIC:(InstConcl  [\mkleeneopen{}0\mkleeneclose{}]\mcdot{}  THEN  Auto)

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