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Theorem qtopeu 22240
Description: Universal property of the quotient topology. If 𝐺 is a function from 𝐽 to 𝐾 which is equal on all equivalent elements under 𝐹, then there is a unique continuous map 𝑓:(𝐽 / 𝐹)⟶𝐾 such that 𝐺 = 𝑓𝐹, and we say that 𝐺 "passes to the quotient". (Contributed by Mario Carneiro, 24-Mar-2015.)
Hypotheses
Ref Expression
qtopeu.1 (𝜑𝐽 ∈ (TopOn‘𝑋))
qtopeu.3 (𝜑𝐹:𝑋onto𝑌)
qtopeu.4 (𝜑𝐺 ∈ (𝐽 Cn 𝐾))
qtopeu.5 ((𝜑 ∧ (𝑥𝑋𝑦𝑋 ∧ (𝐹𝑥) = (𝐹𝑦))) → (𝐺𝑥) = (𝐺𝑦))
Assertion
Ref Expression
qtopeu (𝜑 → ∃!𝑓 ∈ ((𝐽 qTop 𝐹) Cn 𝐾)𝐺 = (𝑓𝐹))
Distinct variable groups:   𝑥,𝑓,𝑦,𝐹   𝑓,𝐽,𝑥   𝑓,𝐾,𝑥   𝑥,𝑋,𝑦   𝑓,𝐺,𝑥,𝑦   𝜑,𝑓,𝑥,𝑦   𝑓,𝑌,𝑥
Allowed substitution hints:   𝐽(𝑦)   𝐾(𝑦)   𝑋(𝑓)   𝑌(𝑦)

Proof of Theorem qtopeu
Dummy variables 𝑔 𝑤 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 qtopeu.3 . . . . . . . . . . . . . . . 16 (𝜑𝐹:𝑋onto𝑌)
2 fofn 6588 . . . . . . . . . . . . . . . 16 (𝐹:𝑋onto𝑌𝐹 Fn 𝑋)
31, 2syl 17 . . . . . . . . . . . . . . 15 (𝜑𝐹 Fn 𝑋)
43adantr 481 . . . . . . . . . . . . . 14 ((𝜑𝑥𝑋) → 𝐹 Fn 𝑋)
5 fniniseg 6825 . . . . . . . . . . . . . 14 (𝐹 Fn 𝑋 → (𝑦 ∈ (𝐹 “ {(𝐹𝑥)}) ↔ (𝑦𝑋 ∧ (𝐹𝑦) = (𝐹𝑥))))
64, 5syl 17 . . . . . . . . . . . . 13 ((𝜑𝑥𝑋) → (𝑦 ∈ (𝐹 “ {(𝐹𝑥)}) ↔ (𝑦𝑋 ∧ (𝐹𝑦) = (𝐹𝑥))))
7 eqcom 2831 . . . . . . . . . . . . . . . . . 18 ((𝐹𝑥) = (𝐹𝑦) ↔ (𝐹𝑦) = (𝐹𝑥))
873anbi3i 1153 . . . . . . . . . . . . . . . . 17 ((𝑥𝑋𝑦𝑋 ∧ (𝐹𝑥) = (𝐹𝑦)) ↔ (𝑥𝑋𝑦𝑋 ∧ (𝐹𝑦) = (𝐹𝑥)))
9 3anass 1089 . . . . . . . . . . . . . . . . 17 ((𝑥𝑋𝑦𝑋 ∧ (𝐹𝑦) = (𝐹𝑥)) ↔ (𝑥𝑋 ∧ (𝑦𝑋 ∧ (𝐹𝑦) = (𝐹𝑥))))
108, 9bitri 276 . . . . . . . . . . . . . . . 16 ((𝑥𝑋𝑦𝑋 ∧ (𝐹𝑥) = (𝐹𝑦)) ↔ (𝑥𝑋 ∧ (𝑦𝑋 ∧ (𝐹𝑦) = (𝐹𝑥))))
11 qtopeu.5 . . . . . . . . . . . . . . . 16 ((𝜑 ∧ (𝑥𝑋𝑦𝑋 ∧ (𝐹𝑥) = (𝐹𝑦))) → (𝐺𝑥) = (𝐺𝑦))
1210, 11sylan2br 594 . . . . . . . . . . . . . . 15 ((𝜑 ∧ (𝑥𝑋 ∧ (𝑦𝑋 ∧ (𝐹𝑦) = (𝐹𝑥)))) → (𝐺𝑥) = (𝐺𝑦))
1312eqcomd 2830 . . . . . . . . . . . . . 14 ((𝜑 ∧ (𝑥𝑋 ∧ (𝑦𝑋 ∧ (𝐹𝑦) = (𝐹𝑥)))) → (𝐺𝑦) = (𝐺𝑥))
1413expr 457 . . . . . . . . . . . . 13 ((𝜑𝑥𝑋) → ((𝑦𝑋 ∧ (𝐹𝑦) = (𝐹𝑥)) → (𝐺𝑦) = (𝐺𝑥)))
156, 14sylbid 241 . . . . . . . . . . . 12 ((𝜑𝑥𝑋) → (𝑦 ∈ (𝐹 “ {(𝐹𝑥)}) → (𝐺𝑦) = (𝐺𝑥)))
1615ralrimiv 3185 . . . . . . . . . . 11 ((𝜑𝑥𝑋) → ∀𝑦 ∈ (𝐹 “ {(𝐹𝑥)})(𝐺𝑦) = (𝐺𝑥))
17 qtopeu.1 . . . . . . . . . . . . . . 15 (𝜑𝐽 ∈ (TopOn‘𝑋))
18 qtopeu.4 . . . . . . . . . . . . . . . . 17 (𝜑𝐺 ∈ (𝐽 Cn 𝐾))
19 cntop2 21765 . . . . . . . . . . . . . . . . 17 (𝐺 ∈ (𝐽 Cn 𝐾) → 𝐾 ∈ Top)
2018, 19syl 17 . . . . . . . . . . . . . . . 16 (𝜑𝐾 ∈ Top)
21 toptopon2 21442 . . . . . . . . . . . . . . . 16 (𝐾 ∈ Top ↔ 𝐾 ∈ (TopOn‘ 𝐾))
2220, 21sylib 219 . . . . . . . . . . . . . . 15 (𝜑𝐾 ∈ (TopOn‘ 𝐾))
23 cnf2 21773 . . . . . . . . . . . . . . 15 ((𝐽 ∈ (TopOn‘𝑋) ∧ 𝐾 ∈ (TopOn‘ 𝐾) ∧ 𝐺 ∈ (𝐽 Cn 𝐾)) → 𝐺:𝑋 𝐾)
2417, 22, 18, 23syl3anc 1365 . . . . . . . . . . . . . 14 (𝜑𝐺:𝑋 𝐾)
2524ffnd 6511 . . . . . . . . . . . . 13 (𝜑𝐺 Fn 𝑋)
2625adantr 481 . . . . . . . . . . . 12 ((𝜑𝑥𝑋) → 𝐺 Fn 𝑋)
27 cnvimass 5946 . . . . . . . . . . . . 13 (𝐹 “ {(𝐹𝑥)}) ⊆ dom 𝐹
28 fof 6586 . . . . . . . . . . . . . . . 16 (𝐹:𝑋onto𝑌𝐹:𝑋𝑌)
291, 28syl 17 . . . . . . . . . . . . . . 15 (𝜑𝐹:𝑋𝑌)
3029fdmd 6519 . . . . . . . . . . . . . 14 (𝜑 → dom 𝐹 = 𝑋)
3130adantr 481 . . . . . . . . . . . . 13 ((𝜑𝑥𝑋) → dom 𝐹 = 𝑋)
3227, 31sseqtrid 4022 . . . . . . . . . . . 12 ((𝜑𝑥𝑋) → (𝐹 “ {(𝐹𝑥)}) ⊆ 𝑋)
33 eqeq1 2828 . . . . . . . . . . . . 13 (𝑤 = (𝐺𝑦) → (𝑤 = (𝐺𝑥) ↔ (𝐺𝑦) = (𝐺𝑥)))
3433ralima 6997 . . . . . . . . . . . 12 ((𝐺 Fn 𝑋 ∧ (𝐹 “ {(𝐹𝑥)}) ⊆ 𝑋) → (∀𝑤 ∈ (𝐺 “ (𝐹 “ {(𝐹𝑥)}))𝑤 = (𝐺𝑥) ↔ ∀𝑦 ∈ (𝐹 “ {(𝐹𝑥)})(𝐺𝑦) = (𝐺𝑥)))
3526, 32, 34syl2anc 584 . . . . . . . . . . 11 ((𝜑𝑥𝑋) → (∀𝑤 ∈ (𝐺 “ (𝐹 “ {(𝐹𝑥)}))𝑤 = (𝐺𝑥) ↔ ∀𝑦 ∈ (𝐹 “ {(𝐹𝑥)})(𝐺𝑦) = (𝐺𝑥)))
3616, 35mpbird 258 . . . . . . . . . 10 ((𝜑𝑥𝑋) → ∀𝑤 ∈ (𝐺 “ (𝐹 “ {(𝐹𝑥)}))𝑤 = (𝐺𝑥))
3724fdmd 6519 . . . . . . . . . . . . . . 15 (𝜑 → dom 𝐺 = 𝑋)
3837eleq2d 2902 . . . . . . . . . . . . . 14 (𝜑 → (𝑥 ∈ dom 𝐺𝑥𝑋))
3938biimpar 478 . . . . . . . . . . . . 13 ((𝜑𝑥𝑋) → 𝑥 ∈ dom 𝐺)
40 simpr 485 . . . . . . . . . . . . . 14 ((𝜑𝑥𝑋) → 𝑥𝑋)
41 eqidd 2825 . . . . . . . . . . . . . 14 ((𝜑𝑥𝑋) → (𝐹𝑥) = (𝐹𝑥))
42 fniniseg 6825 . . . . . . . . . . . . . . 15 (𝐹 Fn 𝑋 → (𝑥 ∈ (𝐹 “ {(𝐹𝑥)}) ↔ (𝑥𝑋 ∧ (𝐹𝑥) = (𝐹𝑥))))
434, 42syl 17 . . . . . . . . . . . . . 14 ((𝜑𝑥𝑋) → (𝑥 ∈ (𝐹 “ {(𝐹𝑥)}) ↔ (𝑥𝑋 ∧ (𝐹𝑥) = (𝐹𝑥))))
4440, 41, 43mpbir2and 709 . . . . . . . . . . . . 13 ((𝜑𝑥𝑋) → 𝑥 ∈ (𝐹 “ {(𝐹𝑥)}))
45 inelcm 4416 . . . . . . . . . . . . 13 ((𝑥 ∈ dom 𝐺𝑥 ∈ (𝐹 “ {(𝐹𝑥)})) → (dom 𝐺 ∩ (𝐹 “ {(𝐹𝑥)})) ≠ ∅)
4639, 44, 45syl2anc 584 . . . . . . . . . . . 12 ((𝜑𝑥𝑋) → (dom 𝐺 ∩ (𝐹 “ {(𝐹𝑥)})) ≠ ∅)
47 imadisj 5945 . . . . . . . . . . . . 13 ((𝐺 “ (𝐹 “ {(𝐹𝑥)})) = ∅ ↔ (dom 𝐺 ∩ (𝐹 “ {(𝐹𝑥)})) = ∅)
4847necon3bii 3072 . . . . . . . . . . . 12 ((𝐺 “ (𝐹 “ {(𝐹𝑥)})) ≠ ∅ ↔ (dom 𝐺 ∩ (𝐹 “ {(𝐹𝑥)})) ≠ ∅)
4946, 48sylibr 235 . . . . . . . . . . 11 ((𝜑𝑥𝑋) → (𝐺 “ (𝐹 “ {(𝐹𝑥)})) ≠ ∅)
50 eqsn 4760 . . . . . . . . . . 11 ((𝐺 “ (𝐹 “ {(𝐹𝑥)})) ≠ ∅ → ((𝐺 “ (𝐹 “ {(𝐹𝑥)})) = {(𝐺𝑥)} ↔ ∀𝑤 ∈ (𝐺 “ (𝐹 “ {(𝐹𝑥)}))𝑤 = (𝐺𝑥)))
5149, 50syl 17 . . . . . . . . . 10 ((𝜑𝑥𝑋) → ((𝐺 “ (𝐹 “ {(𝐹𝑥)})) = {(𝐺𝑥)} ↔ ∀𝑤 ∈ (𝐺 “ (𝐹 “ {(𝐹𝑥)}))𝑤 = (𝐺𝑥)))
5236, 51mpbird 258 . . . . . . . . 9 ((𝜑𝑥𝑋) → (𝐺 “ (𝐹 “ {(𝐹𝑥)})) = {(𝐺𝑥)})
5352unieqd 4846 . . . . . . . 8 ((𝜑𝑥𝑋) → (𝐺 “ (𝐹 “ {(𝐹𝑥)})) = {(𝐺𝑥)})
54 fvex 6679 . . . . . . . . 9 (𝐺𝑥) ∈ V
5554unisn 4852 . . . . . . . 8 {(𝐺𝑥)} = (𝐺𝑥)
5653, 55syl6req 2877 . . . . . . 7 ((𝜑𝑥𝑋) → (𝐺𝑥) = (𝐺 “ (𝐹 “ {(𝐹𝑥)})))
5756mpteq2dva 5157 . . . . . 6 (𝜑 → (𝑥𝑋 ↦ (𝐺𝑥)) = (𝑥𝑋 (𝐺 “ (𝐹 “ {(𝐹𝑥)}))))
5824feqmptd 6729 . . . . . 6 (𝜑𝐺 = (𝑥𝑋 ↦ (𝐺𝑥)))
5929ffvelrnda 6846 . . . . . . 7 ((𝜑𝑥𝑋) → (𝐹𝑥) ∈ 𝑌)
6029feqmptd 6729 . . . . . . 7 (𝜑𝐹 = (𝑥𝑋 ↦ (𝐹𝑥)))
61 eqidd 2825 . . . . . . 7 (𝜑 → (𝑤𝑌 (𝐺 “ (𝐹 “ {𝑤}))) = (𝑤𝑌 (𝐺 “ (𝐹 “ {𝑤}))))
62 sneq 4573 . . . . . . . . . 10 (𝑤 = (𝐹𝑥) → {𝑤} = {(𝐹𝑥)})
6362imaeq2d 5926 . . . . . . . . 9 (𝑤 = (𝐹𝑥) → (𝐹 “ {𝑤}) = (𝐹 “ {(𝐹𝑥)}))
6463imaeq2d 5926 . . . . . . . 8 (𝑤 = (𝐹𝑥) → (𝐺 “ (𝐹 “ {𝑤})) = (𝐺 “ (𝐹 “ {(𝐹𝑥)})))
6564unieqd 4846 . . . . . . 7 (𝑤 = (𝐹𝑥) → (𝐺 “ (𝐹 “ {𝑤})) = (𝐺 “ (𝐹 “ {(𝐹𝑥)})))
6659, 60, 61, 65fmptco 6886 . . . . . 6 (𝜑 → ((𝑤𝑌 (𝐺 “ (𝐹 “ {𝑤}))) ∘ 𝐹) = (𝑥𝑋 (𝐺 “ (𝐹 “ {(𝐹𝑥)}))))
6757, 58, 663eqtr4d 2870 . . . . 5 (𝜑𝐺 = ((𝑤𝑌 (𝐺 “ (𝐹 “ {𝑤}))) ∘ 𝐹))
6867, 18eqeltrrd 2918 . . . 4 (𝜑 → ((𝑤𝑌 (𝐺 “ (𝐹 “ {𝑤}))) ∘ 𝐹) ∈ (𝐽 Cn 𝐾))
6924ffvelrnda 6846 . . . . . . . . 9 ((𝜑𝑥𝑋) → (𝐺𝑥) ∈ 𝐾)
7056, 69eqeltrrd 2918 . . . . . . . 8 ((𝜑𝑥𝑋) → (𝐺 “ (𝐹 “ {(𝐹𝑥)})) ∈ 𝐾)
7170ralrimiva 3186 . . . . . . 7 (𝜑 → ∀𝑥𝑋 (𝐺 “ (𝐹 “ {(𝐹𝑥)})) ∈ 𝐾)
7265eqcomd 2830 . . . . . . . . . . 11 (𝑤 = (𝐹𝑥) → (𝐺 “ (𝐹 “ {(𝐹𝑥)})) = (𝐺 “ (𝐹 “ {𝑤})))
7372eqcoms 2832 . . . . . . . . . 10 ((𝐹𝑥) = 𝑤 (𝐺 “ (𝐹 “ {(𝐹𝑥)})) = (𝐺 “ (𝐹 “ {𝑤})))
7473eleq1d 2901 . . . . . . . . 9 ((𝐹𝑥) = 𝑤 → ( (𝐺 “ (𝐹 “ {(𝐹𝑥)})) ∈ 𝐾 (𝐺 “ (𝐹 “ {𝑤})) ∈ 𝐾))
7574cbvfo 7042 . . . . . . . 8 (𝐹:𝑋onto𝑌 → (∀𝑥𝑋 (𝐺 “ (𝐹 “ {(𝐹𝑥)})) ∈ 𝐾 ↔ ∀𝑤𝑌 (𝐺 “ (𝐹 “ {𝑤})) ∈ 𝐾))
761, 75syl 17 . . . . . . 7 (𝜑 → (∀𝑥𝑋 (𝐺 “ (𝐹 “ {(𝐹𝑥)})) ∈ 𝐾 ↔ ∀𝑤𝑌 (𝐺 “ (𝐹 “ {𝑤})) ∈ 𝐾))
7771, 76mpbid 233 . . . . . 6 (𝜑 → ∀𝑤𝑌 (𝐺 “ (𝐹 “ {𝑤})) ∈ 𝐾)
78 eqid 2824 . . . . . . 7 (𝑤𝑌 (𝐺 “ (𝐹 “ {𝑤}))) = (𝑤𝑌 (𝐺 “ (𝐹 “ {𝑤})))
7978fmpt 6869 . . . . . 6 (∀𝑤𝑌 (𝐺 “ (𝐹 “ {𝑤})) ∈ 𝐾 ↔ (𝑤𝑌 (𝐺 “ (𝐹 “ {𝑤}))):𝑌 𝐾)
8077, 79sylib 219 . . . . 5 (𝜑 → (𝑤𝑌 (𝐺 “ (𝐹 “ {𝑤}))):𝑌 𝐾)
81 qtopcn 22238 . . . . 5 (((𝐽 ∈ (TopOn‘𝑋) ∧ 𝐾 ∈ (TopOn‘ 𝐾)) ∧ (𝐹:𝑋onto𝑌 ∧ (𝑤𝑌 (𝐺 “ (𝐹 “ {𝑤}))):𝑌 𝐾)) → ((𝑤𝑌 (𝐺 “ (𝐹 “ {𝑤}))) ∈ ((𝐽 qTop 𝐹) Cn 𝐾) ↔ ((𝑤𝑌 (𝐺 “ (𝐹 “ {𝑤}))) ∘ 𝐹) ∈ (𝐽 Cn 𝐾)))
8217, 22, 1, 80, 81syl22anc 836 . . . 4 (𝜑 → ((𝑤𝑌 (𝐺 “ (𝐹 “ {𝑤}))) ∈ ((𝐽 qTop 𝐹) Cn 𝐾) ↔ ((𝑤𝑌 (𝐺 “ (𝐹 “ {𝑤}))) ∘ 𝐹) ∈ (𝐽 Cn 𝐾)))
8368, 82mpbird 258 . . 3 (𝜑 → (𝑤𝑌 (𝐺 “ (𝐹 “ {𝑤}))) ∈ ((𝐽 qTop 𝐹) Cn 𝐾))
84 coeq1 5726 . . . 4 (𝑓 = (𝑤𝑌 (𝐺 “ (𝐹 “ {𝑤}))) → (𝑓𝐹) = ((𝑤𝑌 (𝐺 “ (𝐹 “ {𝑤}))) ∘ 𝐹))
8584rspceeqv 3641 . . 3 (((𝑤𝑌 (𝐺 “ (𝐹 “ {𝑤}))) ∈ ((𝐽 qTop 𝐹) Cn 𝐾) ∧ 𝐺 = ((𝑤𝑌 (𝐺 “ (𝐹 “ {𝑤}))) ∘ 𝐹)) → ∃𝑓 ∈ ((𝐽 qTop 𝐹) Cn 𝐾)𝐺 = (𝑓𝐹))
8683, 67, 85syl2anc 584 . 2 (𝜑 → ∃𝑓 ∈ ((𝐽 qTop 𝐹) Cn 𝐾)𝐺 = (𝑓𝐹))
87 eqtr2 2846 . . . 4 ((𝐺 = (𝑓𝐹) ∧ 𝐺 = (𝑔𝐹)) → (𝑓𝐹) = (𝑔𝐹))
881adantr 481 . . . . 5 ((𝜑 ∧ (𝑓 ∈ ((𝐽 qTop 𝐹) Cn 𝐾) ∧ 𝑔 ∈ ((𝐽 qTop 𝐹) Cn 𝐾))) → 𝐹:𝑋onto𝑌)
89 qtoptopon 22228 . . . . . . . . 9 ((𝐽 ∈ (TopOn‘𝑋) ∧ 𝐹:𝑋onto𝑌) → (𝐽 qTop 𝐹) ∈ (TopOn‘𝑌))
9017, 1, 89syl2anc 584 . . . . . . . 8 (𝜑 → (𝐽 qTop 𝐹) ∈ (TopOn‘𝑌))
9190adantr 481 . . . . . . 7 ((𝜑 ∧ (𝑓 ∈ ((𝐽 qTop 𝐹) Cn 𝐾) ∧ 𝑔 ∈ ((𝐽 qTop 𝐹) Cn 𝐾))) → (𝐽 qTop 𝐹) ∈ (TopOn‘𝑌))
9222adantr 481 . . . . . . 7 ((𝜑 ∧ (𝑓 ∈ ((𝐽 qTop 𝐹) Cn 𝐾) ∧ 𝑔 ∈ ((𝐽 qTop 𝐹) Cn 𝐾))) → 𝐾 ∈ (TopOn‘ 𝐾))
93 simprl 767 . . . . . . 7 ((𝜑 ∧ (𝑓 ∈ ((𝐽 qTop 𝐹) Cn 𝐾) ∧ 𝑔 ∈ ((𝐽 qTop 𝐹) Cn 𝐾))) → 𝑓 ∈ ((𝐽 qTop 𝐹) Cn 𝐾))
94 cnf2 21773 . . . . . . 7 (((𝐽 qTop 𝐹) ∈ (TopOn‘𝑌) ∧ 𝐾 ∈ (TopOn‘ 𝐾) ∧ 𝑓 ∈ ((𝐽 qTop 𝐹) Cn 𝐾)) → 𝑓:𝑌 𝐾)
9591, 92, 93, 94syl3anc 1365 . . . . . 6 ((𝜑 ∧ (𝑓 ∈ ((𝐽 qTop 𝐹) Cn 𝐾) ∧ 𝑔 ∈ ((𝐽 qTop 𝐹) Cn 𝐾))) → 𝑓:𝑌 𝐾)
9695ffnd 6511 . . . . 5 ((𝜑 ∧ (𝑓 ∈ ((𝐽 qTop 𝐹) Cn 𝐾) ∧ 𝑔 ∈ ((𝐽 qTop 𝐹) Cn 𝐾))) → 𝑓 Fn 𝑌)
97 simprr 769 . . . . . . 7 ((𝜑 ∧ (𝑓 ∈ ((𝐽 qTop 𝐹) Cn 𝐾) ∧ 𝑔 ∈ ((𝐽 qTop 𝐹) Cn 𝐾))) → 𝑔 ∈ ((𝐽 qTop 𝐹) Cn 𝐾))
98 cnf2 21773 . . . . . . 7 (((𝐽 qTop 𝐹) ∈ (TopOn‘𝑌) ∧ 𝐾 ∈ (TopOn‘ 𝐾) ∧ 𝑔 ∈ ((𝐽 qTop 𝐹) Cn 𝐾)) → 𝑔:𝑌 𝐾)
9991, 92, 97, 98syl3anc 1365 . . . . . 6 ((𝜑 ∧ (𝑓 ∈ ((𝐽 qTop 𝐹) Cn 𝐾) ∧ 𝑔 ∈ ((𝐽 qTop 𝐹) Cn 𝐾))) → 𝑔:𝑌 𝐾)
10099ffnd 6511 . . . . 5 ((𝜑 ∧ (𝑓 ∈ ((𝐽 qTop 𝐹) Cn 𝐾) ∧ 𝑔 ∈ ((𝐽 qTop 𝐹) Cn 𝐾))) → 𝑔 Fn 𝑌)
101 cocan2 7045 . . . . 5 ((𝐹:𝑋onto𝑌𝑓 Fn 𝑌𝑔 Fn 𝑌) → ((𝑓𝐹) = (𝑔𝐹) ↔ 𝑓 = 𝑔))
10288, 96, 100, 101syl3anc 1365 . . . 4 ((𝜑 ∧ (𝑓 ∈ ((𝐽 qTop 𝐹) Cn 𝐾) ∧ 𝑔 ∈ ((𝐽 qTop 𝐹) Cn 𝐾))) → ((𝑓𝐹) = (𝑔𝐹) ↔ 𝑓 = 𝑔))
10387, 102syl5ib 245 . . 3 ((𝜑 ∧ (𝑓 ∈ ((𝐽 qTop 𝐹) Cn 𝐾) ∧ 𝑔 ∈ ((𝐽 qTop 𝐹) Cn 𝐾))) → ((𝐺 = (𝑓𝐹) ∧ 𝐺 = (𝑔𝐹)) → 𝑓 = 𝑔))
104103ralrimivva 3195 . 2 (𝜑 → ∀𝑓 ∈ ((𝐽 qTop 𝐹) Cn 𝐾)∀𝑔 ∈ ((𝐽 qTop 𝐹) Cn 𝐾)((𝐺 = (𝑓𝐹) ∧ 𝐺 = (𝑔𝐹)) → 𝑓 = 𝑔))
105 coeq1 5726 . . . 4 (𝑓 = 𝑔 → (𝑓𝐹) = (𝑔𝐹))
106105eqeq2d 2835 . . 3 (𝑓 = 𝑔 → (𝐺 = (𝑓𝐹) ↔ 𝐺 = (𝑔𝐹)))
107106reu4 3725 . 2 (∃!𝑓 ∈ ((𝐽 qTop 𝐹) Cn 𝐾)𝐺 = (𝑓𝐹) ↔ (∃𝑓 ∈ ((𝐽 qTop 𝐹) Cn 𝐾)𝐺 = (𝑓𝐹) ∧ ∀𝑓 ∈ ((𝐽 qTop 𝐹) Cn 𝐾)∀𝑔 ∈ ((𝐽 qTop 𝐹) Cn 𝐾)((𝐺 = (𝑓𝐹) ∧ 𝐺 = (𝑔𝐹)) → 𝑓 = 𝑔)))
10886, 104, 107sylanbrc 583 1 (𝜑 → ∃!𝑓 ∈ ((𝐽 qTop 𝐹) Cn 𝐾)𝐺 = (𝑓𝐹))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 207  wa 396  w3a 1081   = wceq 1530  wcel 2106  wne 3020  wral 3142  wrex 3143  ∃!wreu 3144  cin 3938  wss 3939  c0 4294  {csn 4563   cuni 4836  cmpt 5142  ccnv 5552  dom cdm 5553  cima 5556  ccom 5557   Fn wfn 6346  wf 6347  ontowfo 6349  cfv 6351  (class class class)co 7151   qTop cqtop 16768  Topctop 21417  TopOnctopon 21434   Cn ccn 21748
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1789  ax-4 1803  ax-5 1904  ax-6 1963  ax-7 2008  ax-8 2108  ax-9 2116  ax-10 2137  ax-11 2152  ax-12 2167  ax-ext 2796  ax-rep 5186  ax-sep 5199  ax-nul 5206  ax-pow 5262  ax-pr 5325  ax-un 7454
This theorem depends on definitions:  df-bi 208  df-an 397  df-or 844  df-3an 1083  df-tru 1533  df-ex 1774  df-nf 1778  df-sb 2063  df-mo 2615  df-eu 2649  df-clab 2803  df-cleq 2817  df-clel 2897  df-nfc 2967  df-ne 3021  df-ral 3147  df-rex 3148  df-reu 3149  df-rmo 3150  df-rab 3151  df-v 3501  df-sbc 3776  df-csb 3887  df-dif 3942  df-un 3944  df-in 3946  df-ss 3955  df-nul 4295  df-if 4470  df-pw 4543  df-sn 4564  df-pr 4566  df-op 4570  df-uni 4837  df-iun 4918  df-br 5063  df-opab 5125  df-mpt 5143  df-id 5458  df-xp 5559  df-rel 5560  df-cnv 5561  df-co 5562  df-dm 5563  df-rn 5564  df-res 5565  df-ima 5566  df-iota 6311  df-fun 6353  df-fn 6354  df-f 6355  df-f1 6356  df-fo 6357  df-f1o 6358  df-fv 6359  df-ov 7154  df-oprab 7155  df-mpo 7156  df-map 8401  df-qtop 16772  df-top 21418  df-topon 21435  df-cn 21751
This theorem is referenced by:  qtophmeo  22341
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