Step
*
of Lemma
axiom-choice-1X-quot
∀X:Type. ∀P:(ℕ ⟶ ℕ) ⟶ X ⟶ ℙ. ((∀f:ℕ ⟶ ℕ. ⇃(∃m:X. (P f m)))
⇒ ⇃(∃F:(ℕ ⟶ ℕ) ⟶ X. ∀f:ℕ ⟶ ℕ. (P f (F f))))
BY
{ (Auto THEN BLemma `axiom-choice-quot` THEN Auto THEN BLemma `trivial-quotient-true` THEN EAuto 1) }
Latex:
Latex:
\mforall{}X:Type. \mforall{}P:(\mBbbN{} {}\mrightarrow{} \mBbbN{}) {}\mrightarrow{} X {}\mrightarrow{} \mBbbP{}.
((\mforall{}f:\mBbbN{} {}\mrightarrow{} \mBbbN{}. \00D9(\mexists{}m:X. (P f m))) {}\mRightarrow{} \00D9(\mexists{}F:(\mBbbN{} {}\mrightarrow{} \mBbbN{}) {}\mrightarrow{} X. \mforall{}f:\mBbbN{} {}\mrightarrow{} \mBbbN{}. (P f (F f))))
By
Latex:
(Auto THEN BLemma `axiom-choice-quot` THEN Auto THEN BLemma `trivial-quotient-true` THEN EAuto 1)
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