Step
*
1
1
of Lemma
ss-homeo_transitivity
1. X : SeparationSpace
2. Y : SeparationSpace
3. Z : SeparationSpace
4. f1 : Point(X ⟶ Y)@i
5. g1 : Point(Y ⟶ X)@i
6. ∀x:Point(X). g1(f1(x)) ≡ x
7. ∀y:Point(Y). f1(g1(y)) ≡ y
8. f : Point(Y ⟶ Z)@i
9. g : Point(Z ⟶ Y)@i
10. ∀x:Point(Y). g(f(x)) ≡ x
11. ∀y:Point(Z). f(g(y)) ≡ y
12. x : Point(X)@i
⊢ g1(g(f(f1(x)))) ≡ x
BY
{ (RWO "10" 0 THEN Auto) }
Latex:
Latex:
1. X : SeparationSpace
2. Y : SeparationSpace
3. Z : SeparationSpace
4. f1 : Point(X {}\mrightarrow{} Y)@i
5. g1 : Point(Y {}\mrightarrow{} X)@i
6. \mforall{}x:Point(X). g1(f1(x)) \mequiv{} x
7. \mforall{}y:Point(Y). f1(g1(y)) \mequiv{} y
8. f : Point(Y {}\mrightarrow{} Z)@i
9. g : Point(Z {}\mrightarrow{} Y)@i
10. \mforall{}x:Point(Y). g(f(x)) \mequiv{} x
11. \mforall{}y:Point(Z). f(g(y)) \mequiv{} y
12. x : Point(X)@i
\mvdash{} g1(g(f(f1(x)))) \mequiv{} x
By
Latex:
(RWO "10" 0 THEN Auto)
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