Step
*
of Lemma
homeo-image_wf
No Annotations
∀[X,Y:Type]. ∀[dX:metric(X)]. ∀[dY:metric(Y)]. ∀[h:homeomorphic(X;dX;Y;dY)]. ∀[A:Type].
homeo-image(A;Y;dY;h) ∈ Type supposing A ⊆r X
BY
{ ProveWfLemma }
1
1. X : Type
2. Y : Type
3. dX : metric(X)
4. dY : metric(Y)
5. h : homeomorphic(X;dX;Y;dY)
6. A : Type
7. A ⊆r X
8. y : Y
9. a : A
⊢ (fst(h)) a ∈ Y
Latex:
Latex:
No Annotations
\mforall{}[X,Y:Type]. \mforall{}[dX:metric(X)]. \mforall{}[dY:metric(Y)]. \mforall{}[h:homeomorphic(X;dX;Y;dY)]. \mforall{}[A:Type].
homeo-image(A;Y;dY;h) \mmember{} Type supposing A \msubseteq{}r X
By
Latex:
ProveWfLemma
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