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Theorem xpstopnlem1 22414
 Description: The function 𝐹 used in xpsval 16835 is a homeomorphism from the binary product topology to the indexed product topology. (Contributed by Mario Carneiro, 2-Sep-2015.)
Hypotheses
Ref Expression
xpstopnlem1.f 𝐹 = (𝑥𝑋, 𝑦𝑌 ↦ {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩})
xpstopnlem1.j (𝜑𝐽 ∈ (TopOn‘𝑋))
xpstopnlem1.k (𝜑𝐾 ∈ (TopOn‘𝑌))
Assertion
Ref Expression
xpstopnlem1 (𝜑𝐹 ∈ ((𝐽 ×t 𝐾)Homeo(∏t‘{⟨∅, 𝐽⟩, ⟨1o, 𝐾⟩})))
Distinct variable groups:   𝑥,𝑦,𝐽   𝑥,𝐾,𝑦   𝜑,𝑥,𝑦   𝑥,𝑋,𝑦   𝑥,𝑌,𝑦
Allowed substitution hints:   𝐹(𝑥,𝑦)

Proof of Theorem xpstopnlem1
Dummy variable 𝑧 is distinct from all other variables.
StepHypRef Expression
1 xpstopnlem1.f . . 3 𝐹 = (𝑥𝑋, 𝑦𝑌 ↦ {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩})
2 xpstopnlem1.j . . . . . . . . . 10 (𝜑𝐽 ∈ (TopOn‘𝑋))
3 xpstopnlem1.k . . . . . . . . . 10 (𝜑𝐾 ∈ (TopOn‘𝑌))
4 txtopon 22196 . . . . . . . . . 10 ((𝐽 ∈ (TopOn‘𝑋) ∧ 𝐾 ∈ (TopOn‘𝑌)) → (𝐽 ×t 𝐾) ∈ (TopOn‘(𝑋 × 𝑌)))
52, 3, 4syl2anc 587 . . . . . . . . 9 (𝜑 → (𝐽 ×t 𝐾) ∈ (TopOn‘(𝑋 × 𝑌)))
6 eqid 2798 . . . . . . . . . . . . 13 (∏t‘{⟨∅, 𝐽⟩}) = (∏t‘{⟨∅, 𝐽⟩})
7 0ex 5175 . . . . . . . . . . . . . 14 ∅ ∈ V
87a1i 11 . . . . . . . . . . . . 13 (𝜑 → ∅ ∈ V)
96, 8, 2pt1hmeo 22411 . . . . . . . . . . . 12 (𝜑 → (𝑧𝑋 ↦ {⟨∅, 𝑧⟩}) ∈ (𝐽Homeo(∏t‘{⟨∅, 𝐽⟩})))
10 hmeocn 22365 . . . . . . . . . . . 12 ((𝑧𝑋 ↦ {⟨∅, 𝑧⟩}) ∈ (𝐽Homeo(∏t‘{⟨∅, 𝐽⟩})) → (𝑧𝑋 ↦ {⟨∅, 𝑧⟩}) ∈ (𝐽 Cn (∏t‘{⟨∅, 𝐽⟩})))
11 cntop2 21846 . . . . . . . . . . . 12 ((𝑧𝑋 ↦ {⟨∅, 𝑧⟩}) ∈ (𝐽 Cn (∏t‘{⟨∅, 𝐽⟩})) → (∏t‘{⟨∅, 𝐽⟩}) ∈ Top)
129, 10, 113syl 18 . . . . . . . . . . 11 (𝜑 → (∏t‘{⟨∅, 𝐽⟩}) ∈ Top)
13 toptopon2 21523 . . . . . . . . . . 11 ((∏t‘{⟨∅, 𝐽⟩}) ∈ Top ↔ (∏t‘{⟨∅, 𝐽⟩}) ∈ (TopOn‘ (∏t‘{⟨∅, 𝐽⟩})))
1412, 13sylib 221 . . . . . . . . . 10 (𝜑 → (∏t‘{⟨∅, 𝐽⟩}) ∈ (TopOn‘ (∏t‘{⟨∅, 𝐽⟩})))
15 eqid 2798 . . . . . . . . . . . . 13 (∏t‘{⟨1o, 𝐾⟩}) = (∏t‘{⟨1o, 𝐾⟩})
16 1on 8092 . . . . . . . . . . . . . 14 1o ∈ On
1716a1i 11 . . . . . . . . . . . . 13 (𝜑 → 1o ∈ On)
1815, 17, 3pt1hmeo 22411 . . . . . . . . . . . 12 (𝜑 → (𝑧𝑌 ↦ {⟨1o, 𝑧⟩}) ∈ (𝐾Homeo(∏t‘{⟨1o, 𝐾⟩})))
19 hmeocn 22365 . . . . . . . . . . . 12 ((𝑧𝑌 ↦ {⟨1o, 𝑧⟩}) ∈ (𝐾Homeo(∏t‘{⟨1o, 𝐾⟩})) → (𝑧𝑌 ↦ {⟨1o, 𝑧⟩}) ∈ (𝐾 Cn (∏t‘{⟨1o, 𝐾⟩})))
20 cntop2 21846 . . . . . . . . . . . 12 ((𝑧𝑌 ↦ {⟨1o, 𝑧⟩}) ∈ (𝐾 Cn (∏t‘{⟨1o, 𝐾⟩})) → (∏t‘{⟨1o, 𝐾⟩}) ∈ Top)
2118, 19, 203syl 18 . . . . . . . . . . 11 (𝜑 → (∏t‘{⟨1o, 𝐾⟩}) ∈ Top)
22 toptopon2 21523 . . . . . . . . . . 11 ((∏t‘{⟨1o, 𝐾⟩}) ∈ Top ↔ (∏t‘{⟨1o, 𝐾⟩}) ∈ (TopOn‘ (∏t‘{⟨1o, 𝐾⟩})))
2321, 22sylib 221 . . . . . . . . . 10 (𝜑 → (∏t‘{⟨1o, 𝐾⟩}) ∈ (TopOn‘ (∏t‘{⟨1o, 𝐾⟩})))
24 txtopon 22196 . . . . . . . . . 10 (((∏t‘{⟨∅, 𝐽⟩}) ∈ (TopOn‘ (∏t‘{⟨∅, 𝐽⟩})) ∧ (∏t‘{⟨1o, 𝐾⟩}) ∈ (TopOn‘ (∏t‘{⟨1o, 𝐾⟩}))) → ((∏t‘{⟨∅, 𝐽⟩}) ×t (∏t‘{⟨1o, 𝐾⟩})) ∈ (TopOn‘( (∏t‘{⟨∅, 𝐽⟩}) × (∏t‘{⟨1o, 𝐾⟩}))))
2514, 23, 24syl2anc 587 . . . . . . . . 9 (𝜑 → ((∏t‘{⟨∅, 𝐽⟩}) ×t (∏t‘{⟨1o, 𝐾⟩})) ∈ (TopOn‘( (∏t‘{⟨∅, 𝐽⟩}) × (∏t‘{⟨1o, 𝐾⟩}))))
26 opeq2 4765 . . . . . . . . . . . . . . . 16 (𝑧 = 𝑥 → ⟨∅, 𝑧⟩ = ⟨∅, 𝑥⟩)
2726sneqd 4537 . . . . . . . . . . . . . . 15 (𝑧 = 𝑥 → {⟨∅, 𝑧⟩} = {⟨∅, 𝑥⟩})
28 eqid 2798 . . . . . . . . . . . . . . 15 (𝑧𝑋 ↦ {⟨∅, 𝑧⟩}) = (𝑧𝑋 ↦ {⟨∅, 𝑧⟩})
29 snex 5297 . . . . . . . . . . . . . . 15 {⟨∅, 𝑥⟩} ∈ V
3027, 28, 29fvmpt 6745 . . . . . . . . . . . . . 14 (𝑥𝑋 → ((𝑧𝑋 ↦ {⟨∅, 𝑧⟩})‘𝑥) = {⟨∅, 𝑥⟩})
31 opeq2 4765 . . . . . . . . . . . . . . . 16 (𝑧 = 𝑦 → ⟨1o, 𝑧⟩ = ⟨1o, 𝑦⟩)
3231sneqd 4537 . . . . . . . . . . . . . . 15 (𝑧 = 𝑦 → {⟨1o, 𝑧⟩} = {⟨1o, 𝑦⟩})
33 eqid 2798 . . . . . . . . . . . . . . 15 (𝑧𝑌 ↦ {⟨1o, 𝑧⟩}) = (𝑧𝑌 ↦ {⟨1o, 𝑧⟩})
34 snex 5297 . . . . . . . . . . . . . . 15 {⟨1o, 𝑦⟩} ∈ V
3532, 33, 34fvmpt 6745 . . . . . . . . . . . . . 14 (𝑦𝑌 → ((𝑧𝑌 ↦ {⟨1o, 𝑧⟩})‘𝑦) = {⟨1o, 𝑦⟩})
36 opeq12 4767 . . . . . . . . . . . . . 14 ((((𝑧𝑋 ↦ {⟨∅, 𝑧⟩})‘𝑥) = {⟨∅, 𝑥⟩} ∧ ((𝑧𝑌 ↦ {⟨1o, 𝑧⟩})‘𝑦) = {⟨1o, 𝑦⟩}) → ⟨((𝑧𝑋 ↦ {⟨∅, 𝑧⟩})‘𝑥), ((𝑧𝑌 ↦ {⟨1o, 𝑧⟩})‘𝑦)⟩ = ⟨{⟨∅, 𝑥⟩}, {⟨1o, 𝑦⟩}⟩)
3730, 35, 36syl2an 598 . . . . . . . . . . . . 13 ((𝑥𝑋𝑦𝑌) → ⟨((𝑧𝑋 ↦ {⟨∅, 𝑧⟩})‘𝑥), ((𝑧𝑌 ↦ {⟨1o, 𝑧⟩})‘𝑦)⟩ = ⟨{⟨∅, 𝑥⟩}, {⟨1o, 𝑦⟩}⟩)
3837mpoeq3ia 7211 . . . . . . . . . . . 12 (𝑥𝑋, 𝑦𝑌 ↦ ⟨((𝑧𝑋 ↦ {⟨∅, 𝑧⟩})‘𝑥), ((𝑧𝑌 ↦ {⟨1o, 𝑧⟩})‘𝑦)⟩) = (𝑥𝑋, 𝑦𝑌 ↦ ⟨{⟨∅, 𝑥⟩}, {⟨1o, 𝑦⟩}⟩)
39 toponuni 21519 . . . . . . . . . . . . . 14 (𝐽 ∈ (TopOn‘𝑋) → 𝑋 = 𝐽)
402, 39syl 17 . . . . . . . . . . . . 13 (𝜑𝑋 = 𝐽)
41 toponuni 21519 . . . . . . . . . . . . . 14 (𝐾 ∈ (TopOn‘𝑌) → 𝑌 = 𝐾)
423, 41syl 17 . . . . . . . . . . . . 13 (𝜑𝑌 = 𝐾)
43 mpoeq12 7206 . . . . . . . . . . . . 13 ((𝑋 = 𝐽𝑌 = 𝐾) → (𝑥𝑋, 𝑦𝑌 ↦ ⟨((𝑧𝑋 ↦ {⟨∅, 𝑧⟩})‘𝑥), ((𝑧𝑌 ↦ {⟨1o, 𝑧⟩})‘𝑦)⟩) = (𝑥 𝐽, 𝑦 𝐾 ↦ ⟨((𝑧𝑋 ↦ {⟨∅, 𝑧⟩})‘𝑥), ((𝑧𝑌 ↦ {⟨1o, 𝑧⟩})‘𝑦)⟩))
4440, 42, 43syl2anc 587 . . . . . . . . . . . 12 (𝜑 → (𝑥𝑋, 𝑦𝑌 ↦ ⟨((𝑧𝑋 ↦ {⟨∅, 𝑧⟩})‘𝑥), ((𝑧𝑌 ↦ {⟨1o, 𝑧⟩})‘𝑦)⟩) = (𝑥 𝐽, 𝑦 𝐾 ↦ ⟨((𝑧𝑋 ↦ {⟨∅, 𝑧⟩})‘𝑥), ((𝑧𝑌 ↦ {⟨1o, 𝑧⟩})‘𝑦)⟩))
4538, 44syl5eqr 2847 . . . . . . . . . . 11 (𝜑 → (𝑥𝑋, 𝑦𝑌 ↦ ⟨{⟨∅, 𝑥⟩}, {⟨1o, 𝑦⟩}⟩) = (𝑥 𝐽, 𝑦 𝐾 ↦ ⟨((𝑧𝑋 ↦ {⟨∅, 𝑧⟩})‘𝑥), ((𝑧𝑌 ↦ {⟨1o, 𝑧⟩})‘𝑦)⟩))
46 eqid 2798 . . . . . . . . . . . 12 𝐽 = 𝐽
47 eqid 2798 . . . . . . . . . . . 12 𝐾 = 𝐾
4846, 47, 9, 18txhmeo 22408 . . . . . . . . . . 11 (𝜑 → (𝑥 𝐽, 𝑦 𝐾 ↦ ⟨((𝑧𝑋 ↦ {⟨∅, 𝑧⟩})‘𝑥), ((𝑧𝑌 ↦ {⟨1o, 𝑧⟩})‘𝑦)⟩) ∈ ((𝐽 ×t 𝐾)Homeo((∏t‘{⟨∅, 𝐽⟩}) ×t (∏t‘{⟨1o, 𝐾⟩}))))
4945, 48eqeltrd 2890 . . . . . . . . . 10 (𝜑 → (𝑥𝑋, 𝑦𝑌 ↦ ⟨{⟨∅, 𝑥⟩}, {⟨1o, 𝑦⟩}⟩) ∈ ((𝐽 ×t 𝐾)Homeo((∏t‘{⟨∅, 𝐽⟩}) ×t (∏t‘{⟨1o, 𝐾⟩}))))
50 hmeocn 22365 . . . . . . . . . 10 ((𝑥𝑋, 𝑦𝑌 ↦ ⟨{⟨∅, 𝑥⟩}, {⟨1o, 𝑦⟩}⟩) ∈ ((𝐽 ×t 𝐾)Homeo((∏t‘{⟨∅, 𝐽⟩}) ×t (∏t‘{⟨1o, 𝐾⟩}))) → (𝑥𝑋, 𝑦𝑌 ↦ ⟨{⟨∅, 𝑥⟩}, {⟨1o, 𝑦⟩}⟩) ∈ ((𝐽 ×t 𝐾) Cn ((∏t‘{⟨∅, 𝐽⟩}) ×t (∏t‘{⟨1o, 𝐾⟩}))))
5149, 50syl 17 . . . . . . . . 9 (𝜑 → (𝑥𝑋, 𝑦𝑌 ↦ ⟨{⟨∅, 𝑥⟩}, {⟨1o, 𝑦⟩}⟩) ∈ ((𝐽 ×t 𝐾) Cn ((∏t‘{⟨∅, 𝐽⟩}) ×t (∏t‘{⟨1o, 𝐾⟩}))))
52 cnf2 21854 . . . . . . . . 9 (((𝐽 ×t 𝐾) ∈ (TopOn‘(𝑋 × 𝑌)) ∧ ((∏t‘{⟨∅, 𝐽⟩}) ×t (∏t‘{⟨1o, 𝐾⟩})) ∈ (TopOn‘( (∏t‘{⟨∅, 𝐽⟩}) × (∏t‘{⟨1o, 𝐾⟩}))) ∧ (𝑥𝑋, 𝑦𝑌 ↦ ⟨{⟨∅, 𝑥⟩}, {⟨1o, 𝑦⟩}⟩) ∈ ((𝐽 ×t 𝐾) Cn ((∏t‘{⟨∅, 𝐽⟩}) ×t (∏t‘{⟨1o, 𝐾⟩})))) → (𝑥𝑋, 𝑦𝑌 ↦ ⟨{⟨∅, 𝑥⟩}, {⟨1o, 𝑦⟩}⟩):(𝑋 × 𝑌)⟶( (∏t‘{⟨∅, 𝐽⟩}) × (∏t‘{⟨1o, 𝐾⟩})))
535, 25, 51, 52syl3anc 1368 . . . . . . . 8 (𝜑 → (𝑥𝑋, 𝑦𝑌 ↦ ⟨{⟨∅, 𝑥⟩}, {⟨1o, 𝑦⟩}⟩):(𝑋 × 𝑌)⟶( (∏t‘{⟨∅, 𝐽⟩}) × (∏t‘{⟨1o, 𝐾⟩})))
54 eqid 2798 . . . . . . . . 9 (𝑥𝑋, 𝑦𝑌 ↦ ⟨{⟨∅, 𝑥⟩}, {⟨1o, 𝑦⟩}⟩) = (𝑥𝑋, 𝑦𝑌 ↦ ⟨{⟨∅, 𝑥⟩}, {⟨1o, 𝑦⟩}⟩)
5554fmpo 7748 . . . . . . . 8 (∀𝑥𝑋𝑦𝑌 ⟨{⟨∅, 𝑥⟩}, {⟨1o, 𝑦⟩}⟩ ∈ ( (∏t‘{⟨∅, 𝐽⟩}) × (∏t‘{⟨1o, 𝐾⟩})) ↔ (𝑥𝑋, 𝑦𝑌 ↦ ⟨{⟨∅, 𝑥⟩}, {⟨1o, 𝑦⟩}⟩):(𝑋 × 𝑌)⟶( (∏t‘{⟨∅, 𝐽⟩}) × (∏t‘{⟨1o, 𝐾⟩})))
5653, 55sylibr 237 . . . . . . 7 (𝜑 → ∀𝑥𝑋𝑦𝑌 ⟨{⟨∅, 𝑥⟩}, {⟨1o, 𝑦⟩}⟩ ∈ ( (∏t‘{⟨∅, 𝐽⟩}) × (∏t‘{⟨1o, 𝐾⟩})))
5756r19.21bi 3173 . . . . . 6 ((𝜑𝑥𝑋) → ∀𝑦𝑌 ⟨{⟨∅, 𝑥⟩}, {⟨1o, 𝑦⟩}⟩ ∈ ( (∏t‘{⟨∅, 𝐽⟩}) × (∏t‘{⟨1o, 𝐾⟩})))
5857r19.21bi 3173 . . . . 5 (((𝜑𝑥𝑋) ∧ 𝑦𝑌) → ⟨{⟨∅, 𝑥⟩}, {⟨1o, 𝑦⟩}⟩ ∈ ( (∏t‘{⟨∅, 𝐽⟩}) × (∏t‘{⟨1o, 𝐾⟩})))
5958anasss 470 . . . 4 ((𝜑 ∧ (𝑥𝑋𝑦𝑌)) → ⟨{⟨∅, 𝑥⟩}, {⟨1o, 𝑦⟩}⟩ ∈ ( (∏t‘{⟨∅, 𝐽⟩}) × (∏t‘{⟨1o, 𝐾⟩})))
60 eqidd 2799 . . . 4 (𝜑 → (𝑥𝑋, 𝑦𝑌 ↦ ⟨{⟨∅, 𝑥⟩}, {⟨1o, 𝑦⟩}⟩) = (𝑥𝑋, 𝑦𝑌 ↦ ⟨{⟨∅, 𝑥⟩}, {⟨1o, 𝑦⟩}⟩))
61 vex 3444 . . . . . . . . 9 𝑥 ∈ V
62 vex 3444 . . . . . . . . 9 𝑦 ∈ V
6361, 62op1std 7681 . . . . . . . 8 (𝑧 = ⟨𝑥, 𝑦⟩ → (1st𝑧) = 𝑥)
6461, 62op2ndd 7682 . . . . . . . 8 (𝑧 = ⟨𝑥, 𝑦⟩ → (2nd𝑧) = 𝑦)
6563, 64uneq12d 4091 . . . . . . 7 (𝑧 = ⟨𝑥, 𝑦⟩ → ((1st𝑧) ∪ (2nd𝑧)) = (𝑥𝑦))
6665mpompt 7245 . . . . . 6 (𝑧 ∈ ( (∏t‘{⟨∅, 𝐽⟩}) × (∏t‘{⟨1o, 𝐾⟩})) ↦ ((1st𝑧) ∪ (2nd𝑧))) = (𝑥 (∏t‘{⟨∅, 𝐽⟩}), 𝑦 (∏t‘{⟨1o, 𝐾⟩}) ↦ (𝑥𝑦))
6766eqcomi 2807 . . . . 5 (𝑥 (∏t‘{⟨∅, 𝐽⟩}), 𝑦 (∏t‘{⟨1o, 𝐾⟩}) ↦ (𝑥𝑦)) = (𝑧 ∈ ( (∏t‘{⟨∅, 𝐽⟩}) × (∏t‘{⟨1o, 𝐾⟩})) ↦ ((1st𝑧) ∪ (2nd𝑧)))
6867a1i 11 . . . 4 (𝜑 → (𝑥 (∏t‘{⟨∅, 𝐽⟩}), 𝑦 (∏t‘{⟨1o, 𝐾⟩}) ↦ (𝑥𝑦)) = (𝑧 ∈ ( (∏t‘{⟨∅, 𝐽⟩}) × (∏t‘{⟨1o, 𝐾⟩})) ↦ ((1st𝑧) ∪ (2nd𝑧))))
6929, 34op1std 7681 . . . . . 6 (𝑧 = ⟨{⟨∅, 𝑥⟩}, {⟨1o, 𝑦⟩}⟩ → (1st𝑧) = {⟨∅, 𝑥⟩})
7029, 34op2ndd 7682 . . . . . 6 (𝑧 = ⟨{⟨∅, 𝑥⟩}, {⟨1o, 𝑦⟩}⟩ → (2nd𝑧) = {⟨1o, 𝑦⟩})
7169, 70uneq12d 4091 . . . . 5 (𝑧 = ⟨{⟨∅, 𝑥⟩}, {⟨1o, 𝑦⟩}⟩ → ((1st𝑧) ∪ (2nd𝑧)) = ({⟨∅, 𝑥⟩} ∪ {⟨1o, 𝑦⟩}))
72 df-pr 4528 . . . . 5 {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩} = ({⟨∅, 𝑥⟩} ∪ {⟨1o, 𝑦⟩})
7371, 72eqtr4di 2851 . . . 4 (𝑧 = ⟨{⟨∅, 𝑥⟩}, {⟨1o, 𝑦⟩}⟩ → ((1st𝑧) ∪ (2nd𝑧)) = {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩})
7459, 60, 68, 73fmpoco 7773 . . 3 (𝜑 → ((𝑥 (∏t‘{⟨∅, 𝐽⟩}), 𝑦 (∏t‘{⟨1o, 𝐾⟩}) ↦ (𝑥𝑦)) ∘ (𝑥𝑋, 𝑦𝑌 ↦ ⟨{⟨∅, 𝑥⟩}, {⟨1o, 𝑦⟩}⟩)) = (𝑥𝑋, 𝑦𝑌 ↦ {⟨∅, 𝑥⟩, ⟨1o, 𝑦⟩}))
751, 74eqtr4id 2852 . 2 (𝜑𝐹 = ((𝑥 (∏t‘{⟨∅, 𝐽⟩}), 𝑦 (∏t‘{⟨1o, 𝐾⟩}) ↦ (𝑥𝑦)) ∘ (𝑥𝑋, 𝑦𝑌 ↦ ⟨{⟨∅, 𝑥⟩}, {⟨1o, 𝑦⟩}⟩)))
76 eqid 2798 . . . . 5 (∏t‘({⟨∅, 𝐽⟩, ⟨1o, 𝐾⟩} ↾ {∅})) = (∏t‘({⟨∅, 𝐽⟩, ⟨1o, 𝐾⟩} ↾ {∅}))
77 eqid 2798 . . . . 5 (∏t‘({⟨∅, 𝐽⟩, ⟨1o, 𝐾⟩} ↾ {1o})) = (∏t‘({⟨∅, 𝐽⟩, ⟨1o, 𝐾⟩} ↾ {1o}))
78 eqid 2798 . . . . 5 (∏t‘{⟨∅, 𝐽⟩, ⟨1o, 𝐾⟩}) = (∏t‘{⟨∅, 𝐽⟩, ⟨1o, 𝐾⟩})
79 eqid 2798 . . . . 5 (∏t‘({⟨∅, 𝐽⟩, ⟨1o, 𝐾⟩} ↾ {∅})) = (∏t‘({⟨∅, 𝐽⟩, ⟨1o, 𝐾⟩} ↾ {∅}))
80 eqid 2798 . . . . 5 (∏t‘({⟨∅, 𝐽⟩, ⟨1o, 𝐾⟩} ↾ {1o})) = (∏t‘({⟨∅, 𝐽⟩, ⟨1o, 𝐾⟩} ↾ {1o}))
81 eqid 2798 . . . . 5 (𝑥 (∏t‘({⟨∅, 𝐽⟩, ⟨1o, 𝐾⟩} ↾ {∅})), 𝑦 (∏t‘({⟨∅, 𝐽⟩, ⟨1o, 𝐾⟩} ↾ {1o})) ↦ (𝑥𝑦)) = (𝑥 (∏t‘({⟨∅, 𝐽⟩, ⟨1o, 𝐾⟩} ↾ {∅})), 𝑦 (∏t‘({⟨∅, 𝐽⟩, ⟨1o, 𝐾⟩} ↾ {1o})) ↦ (𝑥𝑦))
82 2on 8094 . . . . . 6 2o ∈ On
8382a1i 11 . . . . 5 (𝜑 → 2o ∈ On)
84 topontop 21518 . . . . . . 7 (𝐽 ∈ (TopOn‘𝑋) → 𝐽 ∈ Top)
852, 84syl 17 . . . . . 6 (𝜑𝐽 ∈ Top)
86 topontop 21518 . . . . . . 7 (𝐾 ∈ (TopOn‘𝑌) → 𝐾 ∈ Top)
873, 86syl 17 . . . . . 6 (𝜑𝐾 ∈ Top)
88 xpscf 16830 . . . . . 6 ({⟨∅, 𝐽⟩, ⟨1o, 𝐾⟩}:2o⟶Top ↔ (𝐽 ∈ Top ∧ 𝐾 ∈ Top))
8985, 87, 88sylanbrc 586 . . . . 5 (𝜑 → {⟨∅, 𝐽⟩, ⟨1o, 𝐾⟩}:2o⟶Top)
90 df2o3 8100 . . . . . . 7 2o = {∅, 1o}
91 df-pr 4528 . . . . . . 7 {∅, 1o} = ({∅} ∪ {1o})
9290, 91eqtri 2821 . . . . . 6 2o = ({∅} ∪ {1o})
9392a1i 11 . . . . 5 (𝜑 → 2o = ({∅} ∪ {1o}))
94 1n0 8102 . . . . . . 7 1o ≠ ∅
9594necomi 3041 . . . . . 6 ∅ ≠ 1o
96 disjsn2 4608 . . . . . 6 (∅ ≠ 1o → ({∅} ∩ {1o}) = ∅)
9795, 96mp1i 13 . . . . 5 (𝜑 → ({∅} ∩ {1o}) = ∅)
9876, 77, 78, 79, 80, 81, 83, 89, 93, 97ptunhmeo 22413 . . . 4 (𝜑 → (𝑥 (∏t‘({⟨∅, 𝐽⟩, ⟨1o, 𝐾⟩} ↾ {∅})), 𝑦 (∏t‘({⟨∅, 𝐽⟩, ⟨1o, 𝐾⟩} ↾ {1o})) ↦ (𝑥𝑦)) ∈ (((∏t‘({⟨∅, 𝐽⟩, ⟨1o, 𝐾⟩} ↾ {∅})) ×t (∏t‘({⟨∅, 𝐽⟩, ⟨1o, 𝐾⟩} ↾ {1o})))Homeo(∏t‘{⟨∅, 𝐽⟩, ⟨1o, 𝐾⟩})))
99 fnpr2o 16822 . . . . . . . . . 10 ((𝐽 ∈ (TopOn‘𝑋) ∧ 𝐾 ∈ (TopOn‘𝑌)) → {⟨∅, 𝐽⟩, ⟨1o, 𝐾⟩} Fn 2o)
1002, 3, 99syl2anc 587 . . . . . . . . 9 (𝜑 → {⟨∅, 𝐽⟩, ⟨1o, 𝐾⟩} Fn 2o)
1017prid1 4658 . . . . . . . . . 10 ∅ ∈ {∅, 1o}
102101, 90eleqtrri 2889 . . . . . . . . 9 ∅ ∈ 2o
103 fnressn 6897 . . . . . . . . 9 (({⟨∅, 𝐽⟩, ⟨1o, 𝐾⟩} Fn 2o ∧ ∅ ∈ 2o) → ({⟨∅, 𝐽⟩, ⟨1o, 𝐾⟩} ↾ {∅}) = {⟨∅, ({⟨∅, 𝐽⟩, ⟨1o, 𝐾⟩}‘∅)⟩})
104100, 102, 103sylancl 589 . . . . . . . 8 (𝜑 → ({⟨∅, 𝐽⟩, ⟨1o, 𝐾⟩} ↾ {∅}) = {⟨∅, ({⟨∅, 𝐽⟩, ⟨1o, 𝐾⟩}‘∅)⟩})
105 fvpr0o 16824 . . . . . . . . . . 11 (𝐽 ∈ (TopOn‘𝑋) → ({⟨∅, 𝐽⟩, ⟨1o, 𝐾⟩}‘∅) = 𝐽)
1062, 105syl 17 . . . . . . . . . 10 (𝜑 → ({⟨∅, 𝐽⟩, ⟨1o, 𝐾⟩}‘∅) = 𝐽)
107106opeq2d 4772 . . . . . . . . 9 (𝜑 → ⟨∅, ({⟨∅, 𝐽⟩, ⟨1o, 𝐾⟩}‘∅)⟩ = ⟨∅, 𝐽⟩)
108107sneqd 4537 . . . . . . . 8 (𝜑 → {⟨∅, ({⟨∅, 𝐽⟩, ⟨1o, 𝐾⟩}‘∅)⟩} = {⟨∅, 𝐽⟩})
109104, 108eqtrd 2833 . . . . . . 7 (𝜑 → ({⟨∅, 𝐽⟩, ⟨1o, 𝐾⟩} ↾ {∅}) = {⟨∅, 𝐽⟩})
110109fveq2d 6649 . . . . . 6 (𝜑 → (∏t‘({⟨∅, 𝐽⟩, ⟨1o, 𝐾⟩} ↾ {∅})) = (∏t‘{⟨∅, 𝐽⟩}))
111110unieqd 4814 . . . . 5 (𝜑 (∏t‘({⟨∅, 𝐽⟩, ⟨1o, 𝐾⟩} ↾ {∅})) = (∏t‘{⟨∅, 𝐽⟩}))
112 1oex 8093 . . . . . . . . . . 11 1o ∈ V
113112prid2 4659 . . . . . . . . . 10 1o ∈ {∅, 1o}
114113, 90eleqtrri 2889 . . . . . . . . 9 1o ∈ 2o
115 fnressn 6897 . . . . . . . . 9 (({⟨∅, 𝐽⟩, ⟨1o, 𝐾⟩} Fn 2o ∧ 1o ∈ 2o) → ({⟨∅, 𝐽⟩, ⟨1o, 𝐾⟩} ↾ {1o}) = {⟨1o, ({⟨∅, 𝐽⟩, ⟨1o, 𝐾⟩}‘1o)⟩})
116100, 114, 115sylancl 589 . . . . . . . 8 (𝜑 → ({⟨∅, 𝐽⟩, ⟨1o, 𝐾⟩} ↾ {1o}) = {⟨1o, ({⟨∅, 𝐽⟩, ⟨1o, 𝐾⟩}‘1o)⟩})
117 fvpr1o 16825 . . . . . . . . . . 11 (𝐾 ∈ (TopOn‘𝑌) → ({⟨∅, 𝐽⟩, ⟨1o, 𝐾⟩}‘1o) = 𝐾)
1183, 117syl 17 . . . . . . . . . 10 (𝜑 → ({⟨∅, 𝐽⟩, ⟨1o, 𝐾⟩}‘1o) = 𝐾)
119118opeq2d 4772 . . . . . . . . 9 (𝜑 → ⟨1o, ({⟨∅, 𝐽⟩, ⟨1o, 𝐾⟩}‘1o)⟩ = ⟨1o, 𝐾⟩)
120119sneqd 4537 . . . . . . . 8 (𝜑 → {⟨1o, ({⟨∅, 𝐽⟩, ⟨1o, 𝐾⟩}‘1o)⟩} = {⟨1o, 𝐾⟩})
121116, 120eqtrd 2833 . . . . . . 7 (𝜑 → ({⟨∅, 𝐽⟩, ⟨1o, 𝐾⟩} ↾ {1o}) = {⟨1o, 𝐾⟩})
122121fveq2d 6649 . . . . . 6 (𝜑 → (∏t‘({⟨∅, 𝐽⟩, ⟨1o, 𝐾⟩} ↾ {1o})) = (∏t‘{⟨1o, 𝐾⟩}))
123122unieqd 4814 . . . . 5 (𝜑 (∏t‘({⟨∅, 𝐽⟩, ⟨1o, 𝐾⟩} ↾ {1o})) = (∏t‘{⟨1o, 𝐾⟩}))
124 eqidd 2799 . . . . 5 (𝜑 → (𝑥𝑦) = (𝑥𝑦))
125111, 123, 124mpoeq123dv 7208 . . . 4 (𝜑 → (𝑥 (∏t‘({⟨∅, 𝐽⟩, ⟨1o, 𝐾⟩} ↾ {∅})), 𝑦 (∏t‘({⟨∅, 𝐽⟩, ⟨1o, 𝐾⟩} ↾ {1o})) ↦ (𝑥𝑦)) = (𝑥 (∏t‘{⟨∅, 𝐽⟩}), 𝑦 (∏t‘{⟨1o, 𝐾⟩}) ↦ (𝑥𝑦)))
126110, 122oveq12d 7153 . . . . 5 (𝜑 → ((∏t‘({⟨∅, 𝐽⟩, ⟨1o, 𝐾⟩} ↾ {∅})) ×t (∏t‘({⟨∅, 𝐽⟩, ⟨1o, 𝐾⟩} ↾ {1o}))) = ((∏t‘{⟨∅, 𝐽⟩}) ×t (∏t‘{⟨1o, 𝐾⟩})))
127126oveq1d 7150 . . . 4 (𝜑 → (((∏t‘({⟨∅, 𝐽⟩, ⟨1o, 𝐾⟩} ↾ {∅})) ×t (∏t‘({⟨∅, 𝐽⟩, ⟨1o, 𝐾⟩} ↾ {1o})))Homeo(∏t‘{⟨∅, 𝐽⟩, ⟨1o, 𝐾⟩})) = (((∏t‘{⟨∅, 𝐽⟩}) ×t (∏t‘{⟨1o, 𝐾⟩}))Homeo(∏t‘{⟨∅, 𝐽⟩, ⟨1o, 𝐾⟩})))
12898, 125, 1273eltr3d 2904 . . 3 (𝜑 → (𝑥 (∏t‘{⟨∅, 𝐽⟩}), 𝑦 (∏t‘{⟨1o, 𝐾⟩}) ↦ (𝑥𝑦)) ∈ (((∏t‘{⟨∅, 𝐽⟩}) ×t (∏t‘{⟨1o, 𝐾⟩}))Homeo(∏t‘{⟨∅, 𝐽⟩, ⟨1o, 𝐾⟩})))
129 hmeoco 22377 . . 3 (((𝑥𝑋, 𝑦𝑌 ↦ ⟨{⟨∅, 𝑥⟩}, {⟨1o, 𝑦⟩}⟩) ∈ ((𝐽 ×t 𝐾)Homeo((∏t‘{⟨∅, 𝐽⟩}) ×t (∏t‘{⟨1o, 𝐾⟩}))) ∧ (𝑥 (∏t‘{⟨∅, 𝐽⟩}), 𝑦 (∏t‘{⟨1o, 𝐾⟩}) ↦ (𝑥𝑦)) ∈ (((∏t‘{⟨∅, 𝐽⟩}) ×t (∏t‘{⟨1o, 𝐾⟩}))Homeo(∏t‘{⟨∅, 𝐽⟩, ⟨1o, 𝐾⟩}))) → ((𝑥 (∏t‘{⟨∅, 𝐽⟩}), 𝑦 (∏t‘{⟨1o, 𝐾⟩}) ↦ (𝑥𝑦)) ∘ (𝑥𝑋, 𝑦𝑌 ↦ ⟨{⟨∅, 𝑥⟩}, {⟨1o, 𝑦⟩}⟩)) ∈ ((𝐽 ×t 𝐾)Homeo(∏t‘{⟨∅, 𝐽⟩, ⟨1o, 𝐾⟩})))
13049, 128, 129syl2anc 587 . 2 (𝜑 → ((𝑥 (∏t‘{⟨∅, 𝐽⟩}), 𝑦 (∏t‘{⟨1o, 𝐾⟩}) ↦ (𝑥𝑦)) ∘ (𝑥𝑋, 𝑦𝑌 ↦ ⟨{⟨∅, 𝑥⟩}, {⟨1o, 𝑦⟩}⟩)) ∈ ((𝐽 ×t 𝐾)Homeo(∏t‘{⟨∅, 𝐽⟩, ⟨1o, 𝐾⟩})))
13175, 130eqeltrd 2890 1 (𝜑𝐹 ∈ ((𝐽 ×t 𝐾)Homeo(∏t‘{⟨∅, 𝐽⟩, ⟨1o, 𝐾⟩})))
 Colors of variables: wff setvar class Syntax hints:   → wi 4   ∧ wa 399   = wceq 1538   ∈ wcel 2111   ≠ wne 2987  ∀wral 3106  Vcvv 3441   ∪ cun 3879   ∩ cin 3880  ∅c0 4243  {csn 4525  {cpr 4527  ⟨cop 4531  ∪ cuni 4800   ↦ cmpt 5110   × cxp 5517   ↾ cres 5521   ∘ ccom 5523  Oncon0 6159   Fn wfn 6319  ⟶wf 6320  ‘cfv 6324  (class class class)co 7135   ∈ cmpo 7137  1st c1st 7669  2nd c2nd 7670  1oc1o 8078  2oc2o 8079  ∏tcpt 16704  Topctop 21498  TopOnctopon 21515   Cn ccn 21829   ×t ctx 22165  Homeochmeo 22358 This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1797  ax-4 1811  ax-5 1911  ax-6 1970  ax-7 2015  ax-8 2113  ax-9 2121  ax-10 2142  ax-11 2158  ax-12 2175  ax-ext 2770  ax-rep 5154  ax-sep 5167  ax-nul 5174  ax-pow 5231  ax-pr 5295  ax-un 7441 This theorem depends on definitions:  df-bi 210  df-an 400  df-or 845  df-3or 1085  df-3an 1086  df-tru 1541  df-ex 1782  df-nf 1786  df-sb 2070  df-mo 2598  df-eu 2629  df-clab 2777  df-cleq 2791  df-clel 2870  df-nfc 2938  df-ne 2988  df-ral 3111  df-rex 3112  df-reu 3113  df-rab 3115  df-v 3443  df-sbc 3721  df-csb 3829  df-dif 3884  df-un 3886  df-in 3888  df-ss 3898  df-pss 3900  df-nul 4244  df-if 4426  df-pw 4499  df-sn 4526  df-pr 4528  df-tp 4530  df-op 4532  df-uni 4801  df-int 4839  df-iun 4883  df-iin 4884  df-br 5031  df-opab 5093  df-mpt 5111  df-tr 5137  df-id 5425  df-eprel 5430  df-po 5438  df-so 5439  df-fr 5478  df-we 5480  df-xp 5525  df-rel 5526  df-cnv 5527  df-co 5528  df-dm 5529  df-rn 5530  df-res 5531  df-ima 5532  df-pred 6116  df-ord 6162  df-on 6163  df-lim 6164  df-suc 6165  df-iota 6283  df-fun 6326  df-fn 6327  df-f 6328  df-f1 6329  df-fo 6330  df-f1o 6331  df-fv 6332  df-ov 7138  df-oprab 7139  df-mpo 7140  df-om 7561  df-1st 7671  df-2nd 7672  df-wrecs 7930  df-recs 7991  df-rdg 8029  df-1o 8085  df-2o 8086  df-oadd 8089  df-er 8272  df-map 8391  df-ixp 8445  df-en 8493  df-dom 8494  df-sdom 8495  df-fin 8496  df-fi 8859  df-topgen 16709  df-pt 16710  df-top 21499  df-topon 21516  df-bases 21551  df-cn 21832  df-cnp 21833  df-tx 22167  df-hmeo 22360 This theorem is referenced by:  xpstopnlem2  22416
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