Step
*
of Lemma
injective-quotient-typing
∀[T,S:Type]. ∀[f:T ⟶ S]. (f ∈ T//x.f[x] ⟶ S)
BY
{ ((UnivCD THENA Auto) THEN (FunExt THENA Auto)) }
1
1. T : Type
2. S : Type
3. f : T ⟶ S
4. x : T//x.f[x]
⊢ f x ∈ S
Latex:
Latex:
\mforall{}[T,S:Type]. \mforall{}[f:T {}\mrightarrow{} S]. (f \mmember{} T//x.f[x] {}\mrightarrow{} S)
By
Latex:
((UnivCD THENA Auto) THEN (FunExt THENA Auto))
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