Step
*
of Lemma
axiom-choice-0X-quot
∀B:{B:Type| B ⊆r Base} . ∀X:Type. ∀P:B ⟶ X ⟶ ℙ. ((∀n:B. ⇃(∃m:X. (P n m)))
⇒ ⇃(∃f:B ⟶ X. ∀n:B. (P n (f n))))
BY
{ (Auto THEN BLemma `axiom-choice-quot` THEN Auto THEN BLemma `trivial-quotient-true` THEN EAuto 1) }
Latex:
Latex:
\mforall{}B:\{B:Type| B \msubseteq{}r Base\} . \mforall{}X:Type. \mforall{}P:B {}\mrightarrow{} X {}\mrightarrow{} \mBbbP{}.
((\mforall{}n:B. \00D9(\mexists{}m:X. (P n m))) {}\mRightarrow{} \00D9(\mexists{}f:B {}\mrightarrow{} X. \mforall{}n:B. (P n (f n))))
By
Latex:
(Auto THEN BLemma `axiom-choice-quot` THEN Auto THEN BLemma `trivial-quotient-true` THEN EAuto 1)
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