Step
*
1
1
1
of Lemma
qsquash_ex
1. P : ℕ ⟶ ℙ
2. d : ∀n:ℕ. Dec(P[n])
3. ⇃(∃n:ℕ. P[n])
4. ∃n:ℕ. P[n]
⊢ mu(d) ∈ ℕ
BY
{ (BLemma `mu-wf2` THEN Auto) }
Latex:
Latex:
1. P : \mBbbN{} {}\mrightarrow{} \mBbbP{}
2. d : \mforall{}n:\mBbbN{}. Dec(P[n])
3. \00D9(\mexists{}n:\mBbbN{}. P[n])
4. \mexists{}n:\mBbbN{}. P[n]
\mvdash{} mu(d) \mmember{} \mBbbN{}
By
Latex:
(BLemma `mu-wf2` THEN Auto)
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