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Theorem pt1hmeo 24125
Description: The canonical homeomorphism from a topological product on a singleton to the topology of the factor. (Contributed by Mario Carneiro, 3-Feb-2015.) (Proof shortened by AV, 18-Apr-2021.)
Hypotheses
Ref Expression
pt1hmeo.j 𝐾 = (∏t‘{⟨𝐴, 𝐽⟩})
pt1hmeo.a (𝜑 → 𝐴 ∈ 𝑉)
pt1hmeo.r (𝜑 → 𝐽 ∈ (TopOn‘𝑋))
Assertion
Ref Expression
pt1hmeo (𝜑 → (𝑥 ∈ 𝑋 ↦ {⟨𝐴, 𝑥⟩}) ∈ (𝐽Homeo𝐾))
Distinct variable groups:   𝑥,𝐴   𝑥,𝐽   𝑥,𝐾   𝜑,𝑥   𝑥,𝑋
Allowed substitution hint:   𝑉(𝑥)

Proof of Theorem pt1hmeo
Dummy variables 𝑘 𝑦 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 fconstmpt 5712 . . . . 5 ({𝐴} × {𝑥}) = (𝑘 ∈ {𝐴} ↦ 𝑥)
2 pt1hmeo.a . . . . . . 7 (𝜑 → 𝐴 ∈ 𝑉)
32adantr 486 . . . . . 6 ((𝜑 ∧ 𝑥 ∈ 𝑋) → 𝐴 ∈ 𝑉)
4 sneq 4593 . . . . . . . . 9 (𝑘 = 𝐴 → {𝑘} = {𝐴})
54xpeq1d 5679 . . . . . . . 8 (𝑘 = 𝐴 → ({𝑘} × {𝑥}) = ({𝐴} × {𝑥}))
6 opeq1 4832 . . . . . . . . 9 (𝑘 = 𝐴 → ⟨𝑘, 𝑥⟩ = ⟨𝐴, 𝑥⟩)
76sneqd 4595 . . . . . . . 8 (𝑘 = 𝐴 → {⟨𝑘, 𝑥⟩} = {⟨𝐴, 𝑥⟩})
85, 7eqeq12d 2776 . . . . . . 7 (𝑘 = 𝐴 → (({𝑘} × {𝑥}) = {⟨𝑘, 𝑥⟩} ↔ ({𝐴} × {𝑥}) = {⟨𝐴, 𝑥⟩}))
9 vex 3454 . . . . . . . 8 𝑘 ∈ V
10 vex 3454 . . . . . . . 8 𝑥 ∈ V
119, 10xpsn 7141 . . . . . . 7 ({𝑘} × {𝑥}) = {⟨𝑘, 𝑥⟩}
128, 11vtoclg 3517 . . . . . 6 (𝐴 ∈ 𝑉 → ({𝐴} × {𝑥}) = {⟨𝐴, 𝑥⟩})
133, 12syl 18 . . . . 5 ((𝜑 ∧ 𝑥 ∈ 𝑋) → ({𝐴} × {𝑥}) = {⟨𝐴, 𝑥⟩})
141, 13eqtr3id 2809 . . . 4 ((𝜑 ∧ 𝑥 ∈ 𝑋) → (𝑘 ∈ {𝐴} ↦ 𝑥) = {⟨𝐴, 𝑥⟩})
1514mpteq2dva 5197 . . 3 (𝜑 → (𝑥 ∈ 𝑋 ↦ (𝑘 ∈ {𝐴} ↦ 𝑥)) = (𝑥 ∈ 𝑋 ↦ {⟨𝐴, 𝑥⟩}))
16 pt1hmeo.j . . . 4 𝐾 = (∏t‘{⟨𝐴, 𝐽⟩})
17 pt1hmeo.r . . . 4 (𝜑 → 𝐽 ∈ (TopOn‘𝑋))
18 snex 5396 . . . . 5 {𝐴} ∈ V
1918a1i 11 . . . 4 (𝜑 → {𝐴} ∈ V)
20 topontop 23231 . . . . . 6 (𝐽 ∈ (TopOn‘𝑋) → 𝐽 ∈ Top)
2117, 20syl 18 . . . . 5 (𝜑 → 𝐽 ∈ Top)
222, 21fsnd 6869 . . . 4 (𝜑 → {⟨𝐴, 𝐽⟩}:{𝐴}⟶Top)
2317cnmptid 23980 . . . . . 6 (𝜑 → (𝑥 ∈ 𝑋 ↦ 𝑥) ∈ (𝐽 Cn 𝐽))
2423adantr 486 . . . . 5 ((𝜑 ∧ 𝑘 ∈ {𝐴}) → (𝑥 ∈ 𝑋 ↦ 𝑥) ∈ (𝐽 Cn 𝐽))
25 elsni 4600 . . . . . . . 8 (𝑘 ∈ {𝐴} → 𝑘 = 𝐴)
2625fveq2d 6889 . . . . . . 7 (𝑘 ∈ {𝐴} → ({⟨𝐴, 𝐽⟩}‘𝑘) = ({⟨𝐴, 𝐽⟩}‘𝐴))
27 fvsng 7185 . . . . . . . 8 ((𝐴 ∈ 𝑉 ∧ 𝐽 ∈ (TopOn‘𝑋)) → ({⟨𝐴, 𝐽⟩}‘𝐴) = 𝐽)
282, 17, 27syl2anc 596 . . . . . . 7 (𝜑 → ({⟨𝐴, 𝐽⟩}‘𝐴) = 𝐽)
2926, 28sylan9eqr 2817 . . . . . 6 ((𝜑 ∧ 𝑘 ∈ {𝐴}) → ({⟨𝐴, 𝐽⟩}‘𝑘) = 𝐽)
3029oveq2d 7436 . . . . 5 ((𝜑 ∧ 𝑘 ∈ {𝐴}) → (𝐽 Cn ({⟨𝐴, 𝐽⟩}‘𝑘)) = (𝐽 Cn 𝐽))
3124, 30eleqtrrd 2863 . . . 4 ((𝜑 ∧ 𝑘 ∈ {𝐴}) → (𝑥 ∈ 𝑋 ↦ 𝑥) ∈ (𝐽 Cn ({⟨𝐴, 𝐽⟩}‘𝑘)))
3216, 17, 19, 22, 31ptcn 23946 . . 3 (𝜑 → (𝑥 ∈ 𝑋 ↦ (𝑘 ∈ {𝐴} ↦ 𝑥)) ∈ (𝐽 Cn 𝐾))
3315, 32eqeltrrd 2861 . 2 (𝜑 → (𝑥 ∈ 𝑋 ↦ {⟨𝐴, 𝑥⟩}) ∈ (𝐽 Cn 𝐾))
34 simprr 785 . . . . . . . . 9 ((𝜑 ∧ (𝑥 ∈ 𝑋 ∧ 𝑦 = {⟨𝐴, 𝑥⟩})) → 𝑦 = {⟨𝐴, 𝑥⟩})
3514adantrr 730 . . . . . . . . 9 ((𝜑 ∧ (𝑥 ∈ 𝑋 ∧ 𝑦 = {⟨𝐴, 𝑥⟩})) → (𝑘 ∈ {𝐴} ↦ 𝑥) = {⟨𝐴, 𝑥⟩})
3634, 35eqtr4d 2798 . . . . . . . 8 ((𝜑 ∧ (𝑥 ∈ 𝑋 ∧ 𝑦 = {⟨𝐴, 𝑥⟩})) → 𝑦 = (𝑘 ∈ {𝐴} ↦ 𝑥))
37 simprl 783 . . . . . . . . . . 11 ((𝜑 ∧ (𝑥 ∈ 𝑋 ∧ 𝑦 = {⟨𝐴, 𝑥⟩})) → 𝑥 ∈ 𝑋)
3837adantr 486 . . . . . . . . . 10 (((𝜑 ∧ (𝑥 ∈ 𝑋 ∧ 𝑦 = {⟨𝐴, 𝑥⟩})) ∧ 𝑘 ∈ {𝐴}) → 𝑥 ∈ 𝑋)
3938fmpttd 7115 . . . . . . . . 9 ((𝜑 ∧ (𝑥 ∈ 𝑋 ∧ 𝑦 = {⟨𝐴, 𝑥⟩})) → (𝑘 ∈ {𝐴} ↦ 𝑥):{𝐴}⟶𝑋)
40 toponmax 23244 . . . . . . . . . . . 12 (𝐽 ∈ (TopOn‘𝑋) → 𝑋 ∈ 𝐽)
4117, 40syl 18 . . . . . . . . . . 11 (𝜑 → 𝑋 ∈ 𝐽)
4241adantr 486 . . . . . . . . . 10 ((𝜑 ∧ (𝑥 ∈ 𝑋 ∧ 𝑦 = {⟨𝐴, 𝑥⟩})) → 𝑋 ∈ 𝐽)
43 elmapg 8859 . . . . . . . . . 10 ((𝑋 ∈ 𝐽 ∧ {𝐴} ∈ V) → ((𝑘 ∈ {𝐴} ↦ 𝑥) ∈ (𝑋 ↑m {𝐴}) ↔ (𝑘 ∈ {𝐴} ↦ 𝑥):{𝐴}⟶𝑋))
4442, 18, 43sylancl 598 . . . . . . . . 9 ((𝜑 ∧ (𝑥 ∈ 𝑋 ∧ 𝑦 = {⟨𝐴, 𝑥⟩})) → ((𝑘 ∈ {𝐴} ↦ 𝑥) ∈ (𝑋 ↑m {𝐴}) ↔ (𝑘 ∈ {𝐴} ↦ 𝑥):{𝐴}⟶𝑋))
4539, 44mpbird 260 . . . . . . . 8 ((𝜑 ∧ (𝑥 ∈ 𝑋 ∧ 𝑦 = {⟨𝐴, 𝑥⟩})) → (𝑘 ∈ {𝐴} ↦ 𝑥) ∈ (𝑋 ↑m {𝐴}))
4636, 45eqeltrd 2860 . . . . . . 7 ((𝜑 ∧ (𝑥 ∈ 𝑋 ∧ 𝑦 = {⟨𝐴, 𝑥⟩})) → 𝑦 ∈ (𝑋 ↑m {𝐴}))
4734fveq1d 6887 . . . . . . . 8 ((𝜑 ∧ (𝑥 ∈ 𝑋 ∧ 𝑦 = {⟨𝐴, 𝑥⟩})) → (𝑦‘𝐴) = ({⟨𝐴, 𝑥⟩}‘𝐴))
482adantr 486 . . . . . . . . 9 ((𝜑 ∧ (𝑥 ∈ 𝑋 ∧ 𝑦 = {⟨𝐴, 𝑥⟩})) → 𝐴 ∈ 𝑉)
49 fvsng 7185 . . . . . . . . 9 ((𝐴 ∈ 𝑉 ∧ 𝑥 ∈ 𝑋) → ({⟨𝐴, 𝑥⟩}‘𝐴) = 𝑥)
5048, 37, 49syl2anc 596 . . . . . . . 8 ((𝜑 ∧ (𝑥 ∈ 𝑋 ∧ 𝑦 = {⟨𝐴, 𝑥⟩})) → ({⟨𝐴, 𝑥⟩}‘𝐴) = 𝑥)
5147, 50eqtr2d 2796 . . . . . . 7 ((𝜑 ∧ (𝑥 ∈ 𝑋 ∧ 𝑦 = {⟨𝐴, 𝑥⟩})) → 𝑥 = (𝑦‘𝐴))
5246, 51jca 521 . . . . . 6 ((𝜑 ∧ (𝑥 ∈ 𝑋 ∧ 𝑦 = {⟨𝐴, 𝑥⟩})) → (𝑦 ∈ (𝑋 ↑m {𝐴}) ∧ 𝑥 = (𝑦‘𝐴)))
53 simprr 785 . . . . . . . 8 ((𝜑 ∧ (𝑦 ∈ (𝑋 ↑m {𝐴}) ∧ 𝑥 = (𝑦‘𝐴))) → 𝑥 = (𝑦‘𝐴))
54 simprl 783 . . . . . . . . . 10 ((𝜑 ∧ (𝑦 ∈ (𝑋 ↑m {𝐴}) ∧ 𝑥 = (𝑦‘𝐴))) → 𝑦 ∈ (𝑋 ↑m {𝐴}))
5541adantr 486 . . . . . . . . . . 11 ((𝜑 ∧ (𝑦 ∈ (𝑋 ↑m {𝐴}) ∧ 𝑥 = (𝑦‘𝐴))) → 𝑋 ∈ 𝐽)
56 elmapg 8859 . . . . . . . . . . 11 ((𝑋 ∈ 𝐽 ∧ {𝐴} ∈ V) → (𝑦 ∈ (𝑋 ↑m {𝐴}) ↔ 𝑦:{𝐴}⟶𝑋))
5755, 18, 56sylancl 598 . . . . . . . . . 10 ((𝜑 ∧ (𝑦 ∈ (𝑋 ↑m {𝐴}) ∧ 𝑥 = (𝑦‘𝐴))) → (𝑦 ∈ (𝑋 ↑m {𝐴}) ↔ 𝑦:{𝐴}⟶𝑋))
5854, 57mpbid 235 . . . . . . . . 9 ((𝜑 ∧ (𝑦 ∈ (𝑋 ↑m {𝐴}) ∧ 𝑥 = (𝑦‘𝐴))) → 𝑦:{𝐴}⟶𝑋)
59 snidg 4620 . . . . . . . . . . 11 (𝐴 ∈ 𝑉 → 𝐴 ∈ {𝐴})
602, 59syl 18 . . . . . . . . . 10 (𝜑 → 𝐴 ∈ {𝐴})
6160adantr 486 . . . . . . . . 9 ((𝜑 ∧ (𝑦 ∈ (𝑋 ↑m {𝐴}) ∧ 𝑥 = (𝑦‘𝐴))) → 𝐴 ∈ {𝐴})
6258, 61ffvelcdmd 7085 . . . . . . . 8 ((𝜑 ∧ (𝑦 ∈ (𝑋 ↑m {𝐴}) ∧ 𝑥 = (𝑦‘𝐴))) → (𝑦‘𝐴) ∈ 𝑋)
6353, 62eqeltrd 2860 . . . . . . 7 ((𝜑 ∧ (𝑦 ∈ (𝑋 ↑m {𝐴}) ∧ 𝑥 = (𝑦‘𝐴))) → 𝑥 ∈ 𝑋)
642adantr 486 . . . . . . . . . . 11 ((𝜑 ∧ (𝑦 ∈ (𝑋 ↑m {𝐴}) ∧ 𝑥 = (𝑦‘𝐴))) → 𝐴 ∈ 𝑉)
65 fsn2g 7139 . . . . . . . . . . 11 (𝐴 ∈ 𝑉 → (𝑦:{𝐴}⟶𝑋 ↔ ((𝑦‘𝐴) ∈ 𝑋 ∧ 𝑦 = {⟨𝐴, (𝑦‘𝐴)⟩})))
6664, 65syl 18 . . . . . . . . . 10 ((𝜑 ∧ (𝑦 ∈ (𝑋 ↑m {𝐴}) ∧ 𝑥 = (𝑦‘𝐴))) → (𝑦:{𝐴}⟶𝑋 ↔ ((𝑦‘𝐴) ∈ 𝑋 ∧ 𝑦 = {⟨𝐴, (𝑦‘𝐴)⟩})))
6758, 66mpbid 235 . . . . . . . . 9 ((𝜑 ∧ (𝑦 ∈ (𝑋 ↑m {𝐴}) ∧ 𝑥 = (𝑦‘𝐴))) → ((𝑦‘𝐴) ∈ 𝑋 ∧ 𝑦 = {⟨𝐴, (𝑦‘𝐴)⟩}))
6867simprd 501 . . . . . . . 8 ((𝜑 ∧ (𝑦 ∈ (𝑋 ↑m {𝐴}) ∧ 𝑥 = (𝑦‘𝐴))) → 𝑦 = {⟨𝐴, (𝑦‘𝐴)⟩})
6953opeq2d 4839 . . . . . . . . 9 ((𝜑 ∧ (𝑦 ∈ (𝑋 ↑m {𝐴}) ∧ 𝑥 = (𝑦‘𝐴))) → ⟨𝐴, 𝑥⟩ = ⟨𝐴, (𝑦‘𝐴)⟩)
7069sneqd 4595 . . . . . . . 8 ((𝜑 ∧ (𝑦 ∈ (𝑋 ↑m {𝐴}) ∧ 𝑥 = (𝑦‘𝐴))) → {⟨𝐴, 𝑥⟩} = {⟨𝐴, (𝑦‘𝐴)⟩})
7168, 70eqtr4d 2798 . . . . . . 7 ((𝜑 ∧ (𝑦 ∈ (𝑋 ↑m {𝐴}) ∧ 𝑥 = (𝑦‘𝐴))) → 𝑦 = {⟨𝐴, 𝑥⟩})
7263, 71jca 521 . . . . . 6 ((𝜑 ∧ (𝑦 ∈ (𝑋 ↑m {𝐴}) ∧ 𝑥 = (𝑦‘𝐴))) → (𝑥 ∈ 𝑋 ∧ 𝑦 = {⟨𝐴, 𝑥⟩}))
7352, 72impbida 813 . . . . 5 (𝜑 → ((𝑥 ∈ 𝑋 ∧ 𝑦 = {⟨𝐴, 𝑥⟩}) ↔ (𝑦 ∈ (𝑋 ↑m {𝐴}) ∧ 𝑥 = (𝑦‘𝐴))))
7473mptcnv 6131 . . . 4 (𝜑 → ◡(𝑥 ∈ 𝑋 ↦ {⟨𝐴, 𝑥⟩}) = (𝑦 ∈ (𝑋 ↑m {𝐴}) ↦ (𝑦‘𝐴)))
75 xpsng 7140 . . . . . . . . . . 11 ((𝐴 ∈ 𝑉 ∧ 𝐽 ∈ (TopOn‘𝑋)) → ({𝐴} × {𝐽}) = {⟨𝐴, 𝐽⟩})
762, 17, 75syl2anc 596 . . . . . . . . . 10 (𝜑 → ({𝐴} × {𝐽}) = {⟨𝐴, 𝐽⟩})
7776eqcomd 2766 . . . . . . . . 9 (𝜑 → {⟨𝐴, 𝐽⟩} = ({𝐴} × {𝐽}))
7877fveq2d 6889 . . . . . . . 8 (𝜑 → (∏t‘{⟨𝐴, 𝐽⟩}) = (∏t‘({𝐴} × {𝐽})))
7916, 78eqtrid 2807 . . . . . . 7 (𝜑 → 𝐾 = (∏t‘({𝐴} × {𝐽})))
80 eqid 2760 . . . . . . . . 9 (∏t‘({𝐴} × {𝐽})) = (∏t‘({𝐴} × {𝐽}))
8180pttoponconst 23916 . . . . . . . 8 (({𝐴} ∈ V ∧ 𝐽 ∈ (TopOn‘𝑋)) → (∏t‘({𝐴} × {𝐽})) ∈ (TopOn‘(𝑋 ↑m {𝐴})))
8219, 17, 81syl2anc 596 . . . . . . 7 (𝜑 → (∏t‘({𝐴} × {𝐽})) ∈ (TopOn‘(𝑋 ↑m {𝐴})))
8379, 82eqeltrd 2860 . . . . . 6 (𝜑 → 𝐾 ∈ (TopOn‘(𝑋 ↑m {𝐴})))
84 toponuni 23232 . . . . . 6 (𝐾 ∈ (TopOn‘(𝑋 ↑m {𝐴})) → (𝑋 ↑m {𝐴}) = ∪ 𝐾)
8583, 84syl 18 . . . . 5 (𝜑 → (𝑋 ↑m {𝐴}) = ∪ 𝐾)
8685mpteq1d 5194 . . . 4 (𝜑 → (𝑦 ∈ (𝑋 ↑m {𝐴}) ↦ (𝑦‘𝐴)) = (𝑦 ∈ ∪ 𝐾 ↦ (𝑦‘𝐴)))
8774, 86eqtrd 2795 . . 3 (𝜑 → ◡(𝑥 ∈ 𝑋 ↦ {⟨𝐴, 𝑥⟩}) = (𝑦 ∈ ∪ 𝐾 ↦ (𝑦‘𝐴)))
88 eqid 2760 . . . . . 6 ∪ 𝐾 = ∪ 𝐾
8988, 16ptpjcn 23930 . . . . 5 (({𝐴} ∈ V ∧ {⟨𝐴, 𝐽⟩}:{𝐴}⟶Top ∧ 𝐴 ∈ {𝐴}) → (𝑦 ∈ ∪ 𝐾 ↦ (𝑦‘𝐴)) ∈ (𝐾 Cn ({⟨𝐴, 𝐽⟩}‘𝐴)))
9018, 22, 60, 89mp3an2i 1495 . . . 4 (𝜑 → (𝑦 ∈ ∪ 𝐾 ↦ (𝑦‘𝐴)) ∈ (𝐾 Cn ({⟨𝐴, 𝐽⟩}‘𝐴)))
9128oveq2d 7436 . . . 4 (𝜑 → (𝐾 Cn ({⟨𝐴, 𝐽⟩}‘𝐴)) = (𝐾 Cn 𝐽))
9290, 91eleqtrd 2862 . . 3 (𝜑 → (𝑦 ∈ ∪ 𝐾 ↦ (𝑦‘𝐴)) ∈ (𝐾 Cn 𝐽))
9387, 92eqeltrd 2860 . 2 (𝜑 → ◡(𝑥 ∈ 𝑋 ↦ {⟨𝐴, 𝑥⟩}) ∈ (𝐾 Cn 𝐽))
94 ishmeo 24078 . 2 ((𝑥 ∈ 𝑋 ↦ {⟨𝐴, 𝑥⟩}) ∈ (𝐽Homeo𝐾) ↔ ((𝑥 ∈ 𝑋 ↦ {⟨𝐴, 𝑥⟩}) ∈ (𝐽 Cn 𝐾) ∧ ◡(𝑥 ∈ 𝑋 ↦ {⟨𝐴, 𝑥⟩}) ∈ (𝐾 Cn 𝐽)))
9533, 93, 94sylanbrc 595 1 (𝜑 → (𝑥 ∈ 𝑋 ↦ {⟨𝐴, 𝑥⟩}) ∈ (𝐽Homeo𝐾))
Colors of variables:    wff setvar class
This proof depends on syntax axioms:   → wi 4   ↔ wb 209   ∧ wa 401   = wceq 1569   ∈ wcel 2144  Vcvv 3450  {csn 4583  ⟨cop 4589  ∪ cuni 4866   ↦ cmpt 5185   × cxp 5648  ◡ccnv 5649  ⟶wf 6534  ‘cfv 6538  (class class class)co 7420   ↑m cmap 8847  ∏tcpt 17609  Topctop 23211  TopOnctopon 23228   Cn ccn 23542  Homeochmeo 24072
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1827  ax-4 1841  ax-5 1942  ax-6 1999  ax-7 2040  ax-8 2146  ax-9 2154  ax-10 2177  ax-11 2193  ax-12 2212  ax-ext 2732  ax-rep 5231  ax-sep 5248  ax-nul 5259  ax-pow 5326  ax-pr 5390  ax-un 7751
This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3or 1104  df-3an 1105  df-tru 1572  df-fal 1582  df-ex 1812  df-nf 1816  df-sb 2099  df-mo 2564  df-eu 2594  df-clab 2739  df-cleq 2752  df-clel 2835  df-nfc 2909  df-ne 2956  df-ral 3077  df-rex 3087  df-reu 3366  df-rab 3413  df-v 3452  df-sbc 3739  df-csb 3847  df-ss 3896  df-pss 4014  df-dif 4047  df-in 4091  df-un 4151  df-nul 4279  df-if 4482  df-pw 4558  df-sn 4584  df-pr 4586  df-op 4590  df-uni 4867  df-int 4907  df-iun 4952  df-iin 4953  df-br 5103  df-opab 5167  df-mpt 5186  df-tr 5212  df-id 5545  df-eprel 5550  df-po 5558  df-so 5559  df-fr 5603  df-we 5605  df-xp 5656  df-rel 5657  df-cnv 5658  df-co 5659  df-dm 5660  df-rn 5661  df-res 5662  df-ima 5663  df-ord 6365  df-on 6366  df-lim 6367  df-suc 6368  df-iota 6494  df-fun 6540  df-fn 6541  df-f 6542  df-f1 6543  df-fo 6544  df-f1o 6545  df-fv 6546  df-ov 7423  df-oprab 7424  df-mpo 7425  df-om 7878  df-1st 8001  df-2nd 8002  df-1o 8476  df-2o 8477  df-map 8849  df-ixp 8926  df-en 8974  df-dom 8975  df-fin 8977  df-fi 9403  df-topgen 17614  df-pt 17615  df-top 23212  df-topon 23229  df-bases 23264  df-cn 23545  df-cnp 23546  df-hmeo 24074
This theorem is used by:  xpstopnlem1  24128  ptcmpfi  24132
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