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Theorem xkoinjcn 21710
 Description: Continuity of "injection", i.e. currying, as a function on continuous function spaces. (Contributed by Mario Carneiro, 23-Mar-2015.)
Hypothesis
Ref Expression
xkoinjcn.3 𝐹 = (𝑥𝑋 ↦ (𝑦𝑌 ↦ ⟨𝑦, 𝑥⟩))
Assertion
Ref Expression
xkoinjcn ((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) → 𝐹 ∈ (𝑅 Cn ((𝑆 ×t 𝑅) ^ko 𝑆)))
Distinct variable groups:   𝑥,𝑦,𝑅   𝑥,𝑆,𝑦   𝑥,𝑌,𝑦   𝑥,𝑋,𝑦
Allowed substitution hints:   𝐹(𝑥,𝑦)

Proof of Theorem xkoinjcn
Dummy variables 𝑓 𝑘 𝑟 𝑣 𝑤 𝑧 𝑡 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 simplr 744 . . . 4 (((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) ∧ 𝑥𝑋) → 𝑆 ∈ (TopOn‘𝑌))
21cnmptid 21684 . . . 4 (((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) ∧ 𝑥𝑋) → (𝑦𝑌𝑦) ∈ (𝑆 Cn 𝑆))
3 simpll 742 . . . . 5 (((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) ∧ 𝑥𝑋) → 𝑅 ∈ (TopOn‘𝑋))
4 simpr 471 . . . . 5 (((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) ∧ 𝑥𝑋) → 𝑥𝑋)
51, 3, 4cnmptc 21685 . . . 4 (((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) ∧ 𝑥𝑋) → (𝑦𝑌𝑥) ∈ (𝑆 Cn 𝑅))
61, 2, 5cnmpt1t 21688 . . 3 (((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) ∧ 𝑥𝑋) → (𝑦𝑌 ↦ ⟨𝑦, 𝑥⟩) ∈ (𝑆 Cn (𝑆 ×t 𝑅)))
7 xkoinjcn.3 . . 3 𝐹 = (𝑥𝑋 ↦ (𝑦𝑌 ↦ ⟨𝑦, 𝑥⟩))
86, 7fmptd 6527 . 2 ((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) → 𝐹:𝑋⟶(𝑆 Cn (𝑆 ×t 𝑅)))
9 eqid 2770 . . . . . 6 𝑆 = 𝑆
10 eqid 2770 . . . . . 6 {𝑤 ∈ 𝒫 𝑆 ∣ (𝑆t 𝑤) ∈ Comp} = {𝑤 ∈ 𝒫 𝑆 ∣ (𝑆t 𝑤) ∈ Comp}
11 eqid 2770 . . . . . 6 (𝑘 ∈ {𝑤 ∈ 𝒫 𝑆 ∣ (𝑆t 𝑤) ∈ Comp}, 𝑣 ∈ (𝑆 ×t 𝑅) ↦ {𝑓 ∈ (𝑆 Cn (𝑆 ×t 𝑅)) ∣ (𝑓𝑘) ⊆ 𝑣}) = (𝑘 ∈ {𝑤 ∈ 𝒫 𝑆 ∣ (𝑆t 𝑤) ∈ Comp}, 𝑣 ∈ (𝑆 ×t 𝑅) ↦ {𝑓 ∈ (𝑆 Cn (𝑆 ×t 𝑅)) ∣ (𝑓𝑘) ⊆ 𝑣})
129, 10, 11xkobval 21609 . . . . 5 ran (𝑘 ∈ {𝑤 ∈ 𝒫 𝑆 ∣ (𝑆t 𝑤) ∈ Comp}, 𝑣 ∈ (𝑆 ×t 𝑅) ↦ {𝑓 ∈ (𝑆 Cn (𝑆 ×t 𝑅)) ∣ (𝑓𝑘) ⊆ 𝑣}) = {𝑧 ∣ ∃𝑘 ∈ 𝒫 𝑆𝑣 ∈ (𝑆 ×t 𝑅)((𝑆t 𝑘) ∈ Comp ∧ 𝑧 = {𝑓 ∈ (𝑆 Cn (𝑆 ×t 𝑅)) ∣ (𝑓𝑘) ⊆ 𝑣})}
1312abeq2i 2883 . . . 4 (𝑧 ∈ ran (𝑘 ∈ {𝑤 ∈ 𝒫 𝑆 ∣ (𝑆t 𝑤) ∈ Comp}, 𝑣 ∈ (𝑆 ×t 𝑅) ↦ {𝑓 ∈ (𝑆 Cn (𝑆 ×t 𝑅)) ∣ (𝑓𝑘) ⊆ 𝑣}) ↔ ∃𝑘 ∈ 𝒫 𝑆𝑣 ∈ (𝑆 ×t 𝑅)((𝑆t 𝑘) ∈ Comp ∧ 𝑧 = {𝑓 ∈ (𝑆 Cn (𝑆 ×t 𝑅)) ∣ (𝑓𝑘) ⊆ 𝑣}))
14 simpll 742 . . . . . . . . . . . 12 ((((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) ∧ (𝑘 ∈ 𝒫 𝑆𝑣 ∈ (𝑆 ×t 𝑅))) ∧ (𝑆t 𝑘) ∈ Comp) → (𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)))
1514, 6sylan 561 . . . . . . . . . . 11 (((((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) ∧ (𝑘 ∈ 𝒫 𝑆𝑣 ∈ (𝑆 ×t 𝑅))) ∧ (𝑆t 𝑘) ∈ Comp) ∧ 𝑥𝑋) → (𝑦𝑌 ↦ ⟨𝑦, 𝑥⟩) ∈ (𝑆 Cn (𝑆 ×t 𝑅)))
16 imaeq1 5602 . . . . . . . . . . . . 13 (𝑓 = (𝑦𝑌 ↦ ⟨𝑦, 𝑥⟩) → (𝑓𝑘) = ((𝑦𝑌 ↦ ⟨𝑦, 𝑥⟩) “ 𝑘))
1716sseq1d 3779 . . . . . . . . . . . 12 (𝑓 = (𝑦𝑌 ↦ ⟨𝑦, 𝑥⟩) → ((𝑓𝑘) ⊆ 𝑣 ↔ ((𝑦𝑌 ↦ ⟨𝑦, 𝑥⟩) “ 𝑘) ⊆ 𝑣))
1817elrab3 3514 . . . . . . . . . . 11 ((𝑦𝑌 ↦ ⟨𝑦, 𝑥⟩) ∈ (𝑆 Cn (𝑆 ×t 𝑅)) → ((𝑦𝑌 ↦ ⟨𝑦, 𝑥⟩) ∈ {𝑓 ∈ (𝑆 Cn (𝑆 ×t 𝑅)) ∣ (𝑓𝑘) ⊆ 𝑣} ↔ ((𝑦𝑌 ↦ ⟨𝑦, 𝑥⟩) “ 𝑘) ⊆ 𝑣))
1915, 18syl 17 . . . . . . . . . 10 (((((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) ∧ (𝑘 ∈ 𝒫 𝑆𝑣 ∈ (𝑆 ×t 𝑅))) ∧ (𝑆t 𝑘) ∈ Comp) ∧ 𝑥𝑋) → ((𝑦𝑌 ↦ ⟨𝑦, 𝑥⟩) ∈ {𝑓 ∈ (𝑆 Cn (𝑆 ×t 𝑅)) ∣ (𝑓𝑘) ⊆ 𝑣} ↔ ((𝑦𝑌 ↦ ⟨𝑦, 𝑥⟩) “ 𝑘) ⊆ 𝑣))
20 funmpt 6069 . . . . . . . . . . 11 Fun (𝑦𝑌 ↦ ⟨𝑦, 𝑥⟩)
21 simplrl 754 . . . . . . . . . . . . . . 15 ((((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) ∧ (𝑘 ∈ 𝒫 𝑆𝑣 ∈ (𝑆 ×t 𝑅))) ∧ (𝑆t 𝑘) ∈ Comp) → 𝑘 ∈ 𝒫 𝑆)
2221elpwid 4307 . . . . . . . . . . . . . 14 ((((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) ∧ (𝑘 ∈ 𝒫 𝑆𝑣 ∈ (𝑆 ×t 𝑅))) ∧ (𝑆t 𝑘) ∈ Comp) → 𝑘 𝑆)
2314simprd 477 . . . . . . . . . . . . . . 15 ((((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) ∧ (𝑘 ∈ 𝒫 𝑆𝑣 ∈ (𝑆 ×t 𝑅))) ∧ (𝑆t 𝑘) ∈ Comp) → 𝑆 ∈ (TopOn‘𝑌))
24 toponuni 20938 . . . . . . . . . . . . . . 15 (𝑆 ∈ (TopOn‘𝑌) → 𝑌 = 𝑆)
2523, 24syl 17 . . . . . . . . . . . . . 14 ((((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) ∧ (𝑘 ∈ 𝒫 𝑆𝑣 ∈ (𝑆 ×t 𝑅))) ∧ (𝑆t 𝑘) ∈ Comp) → 𝑌 = 𝑆)
2622, 25sseqtr4d 3789 . . . . . . . . . . . . 13 ((((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) ∧ (𝑘 ∈ 𝒫 𝑆𝑣 ∈ (𝑆 ×t 𝑅))) ∧ (𝑆t 𝑘) ∈ Comp) → 𝑘𝑌)
2726adantr 466 . . . . . . . . . . . 12 (((((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) ∧ (𝑘 ∈ 𝒫 𝑆𝑣 ∈ (𝑆 ×t 𝑅))) ∧ (𝑆t 𝑘) ∈ Comp) ∧ 𝑥𝑋) → 𝑘𝑌)
28 dmmptg 5776 . . . . . . . . . . . . 13 (∀𝑦𝑌𝑦, 𝑥⟩ ∈ V → dom (𝑦𝑌 ↦ ⟨𝑦, 𝑥⟩) = 𝑌)
29 opex 5060 . . . . . . . . . . . . . 14 𝑦, 𝑥⟩ ∈ V
3029a1i 11 . . . . . . . . . . . . 13 (𝑦𝑌 → ⟨𝑦, 𝑥⟩ ∈ V)
3128, 30mprg 3074 . . . . . . . . . . . 12 dom (𝑦𝑌 ↦ ⟨𝑦, 𝑥⟩) = 𝑌
3227, 31syl6sseqr 3799 . . . . . . . . . . 11 (((((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) ∧ (𝑘 ∈ 𝒫 𝑆𝑣 ∈ (𝑆 ×t 𝑅))) ∧ (𝑆t 𝑘) ∈ Comp) ∧ 𝑥𝑋) → 𝑘 ⊆ dom (𝑦𝑌 ↦ ⟨𝑦, 𝑥⟩))
33 funimass4 6389 . . . . . . . . . . 11 ((Fun (𝑦𝑌 ↦ ⟨𝑦, 𝑥⟩) ∧ 𝑘 ⊆ dom (𝑦𝑌 ↦ ⟨𝑦, 𝑥⟩)) → (((𝑦𝑌 ↦ ⟨𝑦, 𝑥⟩) “ 𝑘) ⊆ 𝑣 ↔ ∀𝑧𝑘 ((𝑦𝑌 ↦ ⟨𝑦, 𝑥⟩)‘𝑧) ∈ 𝑣))
3420, 32, 33sylancr 567 . . . . . . . . . 10 (((((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) ∧ (𝑘 ∈ 𝒫 𝑆𝑣 ∈ (𝑆 ×t 𝑅))) ∧ (𝑆t 𝑘) ∈ Comp) ∧ 𝑥𝑋) → (((𝑦𝑌 ↦ ⟨𝑦, 𝑥⟩) “ 𝑘) ⊆ 𝑣 ↔ ∀𝑧𝑘 ((𝑦𝑌 ↦ ⟨𝑦, 𝑥⟩)‘𝑧) ∈ 𝑣))
3527sselda 3750 . . . . . . . . . . . . . . 15 ((((((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) ∧ (𝑘 ∈ 𝒫 𝑆𝑣 ∈ (𝑆 ×t 𝑅))) ∧ (𝑆t 𝑘) ∈ Comp) ∧ 𝑥𝑋) ∧ 𝑧𝑘) → 𝑧𝑌)
36 opeq1 4537 . . . . . . . . . . . . . . . 16 (𝑦 = 𝑧 → ⟨𝑦, 𝑥⟩ = ⟨𝑧, 𝑥⟩)
37 eqid 2770 . . . . . . . . . . . . . . . 16 (𝑦𝑌 ↦ ⟨𝑦, 𝑥⟩) = (𝑦𝑌 ↦ ⟨𝑦, 𝑥⟩)
38 opex 5060 . . . . . . . . . . . . . . . 16 𝑧, 𝑥⟩ ∈ V
3936, 37, 38fvmpt 6424 . . . . . . . . . . . . . . 15 (𝑧𝑌 → ((𝑦𝑌 ↦ ⟨𝑦, 𝑥⟩)‘𝑧) = ⟨𝑧, 𝑥⟩)
4035, 39syl 17 . . . . . . . . . . . . . 14 ((((((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) ∧ (𝑘 ∈ 𝒫 𝑆𝑣 ∈ (𝑆 ×t 𝑅))) ∧ (𝑆t 𝑘) ∈ Comp) ∧ 𝑥𝑋) ∧ 𝑧𝑘) → ((𝑦𝑌 ↦ ⟨𝑦, 𝑥⟩)‘𝑧) = ⟨𝑧, 𝑥⟩)
4140eleq1d 2834 . . . . . . . . . . . . 13 ((((((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) ∧ (𝑘 ∈ 𝒫 𝑆𝑣 ∈ (𝑆 ×t 𝑅))) ∧ (𝑆t 𝑘) ∈ Comp) ∧ 𝑥𝑋) ∧ 𝑧𝑘) → (((𝑦𝑌 ↦ ⟨𝑦, 𝑥⟩)‘𝑧) ∈ 𝑣 ↔ ⟨𝑧, 𝑥⟩ ∈ 𝑣))
42 vex 3352 . . . . . . . . . . . . . 14 𝑥 ∈ V
43 opeq2 4538 . . . . . . . . . . . . . . 15 (𝑤 = 𝑥 → ⟨𝑧, 𝑤⟩ = ⟨𝑧, 𝑥⟩)
4443eleq1d 2834 . . . . . . . . . . . . . 14 (𝑤 = 𝑥 → (⟨𝑧, 𝑤⟩ ∈ 𝑣 ↔ ⟨𝑧, 𝑥⟩ ∈ 𝑣))
4542, 44ralsn 4358 . . . . . . . . . . . . 13 (∀𝑤 ∈ {𝑥}⟨𝑧, 𝑤⟩ ∈ 𝑣 ↔ ⟨𝑧, 𝑥⟩ ∈ 𝑣)
4641, 45syl6bbr 278 . . . . . . . . . . . 12 ((((((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) ∧ (𝑘 ∈ 𝒫 𝑆𝑣 ∈ (𝑆 ×t 𝑅))) ∧ (𝑆t 𝑘) ∈ Comp) ∧ 𝑥𝑋) ∧ 𝑧𝑘) → (((𝑦𝑌 ↦ ⟨𝑦, 𝑥⟩)‘𝑧) ∈ 𝑣 ↔ ∀𝑤 ∈ {𝑥}⟨𝑧, 𝑤⟩ ∈ 𝑣))
4746ralbidva 3133 . . . . . . . . . . 11 (((((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) ∧ (𝑘 ∈ 𝒫 𝑆𝑣 ∈ (𝑆 ×t 𝑅))) ∧ (𝑆t 𝑘) ∈ Comp) ∧ 𝑥𝑋) → (∀𝑧𝑘 ((𝑦𝑌 ↦ ⟨𝑦, 𝑥⟩)‘𝑧) ∈ 𝑣 ↔ ∀𝑧𝑘𝑤 ∈ {𝑥}⟨𝑧, 𝑤⟩ ∈ 𝑣))
48 dfss3 3739 . . . . . . . . . . . 12 ((𝑘 × {𝑥}) ⊆ 𝑣 ↔ ∀𝑡 ∈ (𝑘 × {𝑥})𝑡𝑣)
49 eleq1 2837 . . . . . . . . . . . . 13 (𝑡 = ⟨𝑧, 𝑤⟩ → (𝑡𝑣 ↔ ⟨𝑧, 𝑤⟩ ∈ 𝑣))
5049ralxp 5402 . . . . . . . . . . . 12 (∀𝑡 ∈ (𝑘 × {𝑥})𝑡𝑣 ↔ ∀𝑧𝑘𝑤 ∈ {𝑥}⟨𝑧, 𝑤⟩ ∈ 𝑣)
5148, 50bitri 264 . . . . . . . . . . 11 ((𝑘 × {𝑥}) ⊆ 𝑣 ↔ ∀𝑧𝑘𝑤 ∈ {𝑥}⟨𝑧, 𝑤⟩ ∈ 𝑣)
5247, 51syl6bbr 278 . . . . . . . . . 10 (((((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) ∧ (𝑘 ∈ 𝒫 𝑆𝑣 ∈ (𝑆 ×t 𝑅))) ∧ (𝑆t 𝑘) ∈ Comp) ∧ 𝑥𝑋) → (∀𝑧𝑘 ((𝑦𝑌 ↦ ⟨𝑦, 𝑥⟩)‘𝑧) ∈ 𝑣 ↔ (𝑘 × {𝑥}) ⊆ 𝑣))
5319, 34, 523bitrd 294 . . . . . . . . 9 (((((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) ∧ (𝑘 ∈ 𝒫 𝑆𝑣 ∈ (𝑆 ×t 𝑅))) ∧ (𝑆t 𝑘) ∈ Comp) ∧ 𝑥𝑋) → ((𝑦𝑌 ↦ ⟨𝑦, 𝑥⟩) ∈ {𝑓 ∈ (𝑆 Cn (𝑆 ×t 𝑅)) ∣ (𝑓𝑘) ⊆ 𝑣} ↔ (𝑘 × {𝑥}) ⊆ 𝑣))
5453rabbidva 3337 . . . . . . . 8 ((((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) ∧ (𝑘 ∈ 𝒫 𝑆𝑣 ∈ (𝑆 ×t 𝑅))) ∧ (𝑆t 𝑘) ∈ Comp) → {𝑥𝑋 ∣ (𝑦𝑌 ↦ ⟨𝑦, 𝑥⟩) ∈ {𝑓 ∈ (𝑆 Cn (𝑆 ×t 𝑅)) ∣ (𝑓𝑘) ⊆ 𝑣}} = {𝑥𝑋 ∣ (𝑘 × {𝑥}) ⊆ 𝑣})
55 sneq 4324 . . . . . . . . . . . . . 14 (𝑥 = 𝑤 → {𝑥} = {𝑤})
5655xpeq2d 5279 . . . . . . . . . . . . 13 (𝑥 = 𝑤 → (𝑘 × {𝑥}) = (𝑘 × {𝑤}))
5756sseq1d 3779 . . . . . . . . . . . 12 (𝑥 = 𝑤 → ((𝑘 × {𝑥}) ⊆ 𝑣 ↔ (𝑘 × {𝑤}) ⊆ 𝑣))
5857elrab 3513 . . . . . . . . . . 11 (𝑤 ∈ {𝑥𝑋 ∣ (𝑘 × {𝑥}) ⊆ 𝑣} ↔ (𝑤𝑋 ∧ (𝑘 × {𝑤}) ⊆ 𝑣))
59 eqid 2770 . . . . . . . . . . . . 13 (𝑆t 𝑘) = (𝑆t 𝑘)
60 eqid 2770 . . . . . . . . . . . . 13 𝑅 = 𝑅
61 simplr 744 . . . . . . . . . . . . 13 (((((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) ∧ (𝑘 ∈ 𝒫 𝑆𝑣 ∈ (𝑆 ×t 𝑅))) ∧ (𝑆t 𝑘) ∈ Comp) ∧ (𝑤𝑋 ∧ (𝑘 × {𝑤}) ⊆ 𝑣)) → (𝑆t 𝑘) ∈ Comp)
62 simpll 742 . . . . . . . . . . . . . . 15 (((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) ∧ (𝑘 ∈ 𝒫 𝑆𝑣 ∈ (𝑆 ×t 𝑅))) → 𝑅 ∈ (TopOn‘𝑋))
6362ad2antrr 697 . . . . . . . . . . . . . 14 (((((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) ∧ (𝑘 ∈ 𝒫 𝑆𝑣 ∈ (𝑆 ×t 𝑅))) ∧ (𝑆t 𝑘) ∈ Comp) ∧ (𝑤𝑋 ∧ (𝑘 × {𝑤}) ⊆ 𝑣)) → 𝑅 ∈ (TopOn‘𝑋))
64 topontop 20937 . . . . . . . . . . . . . 14 (𝑅 ∈ (TopOn‘𝑋) → 𝑅 ∈ Top)
6563, 64syl 17 . . . . . . . . . . . . 13 (((((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) ∧ (𝑘 ∈ 𝒫 𝑆𝑣 ∈ (𝑆 ×t 𝑅))) ∧ (𝑆t 𝑘) ∈ Comp) ∧ (𝑤𝑋 ∧ (𝑘 × {𝑤}) ⊆ 𝑣)) → 𝑅 ∈ Top)
66 topontop 20937 . . . . . . . . . . . . . . . . . 18 (𝑆 ∈ (TopOn‘𝑌) → 𝑆 ∈ Top)
6766adantl 467 . . . . . . . . . . . . . . . . 17 ((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) → 𝑆 ∈ Top)
6864adantr 466 . . . . . . . . . . . . . . . . 17 ((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) → 𝑅 ∈ Top)
69 txtop 21592 . . . . . . . . . . . . . . . . 17 ((𝑆 ∈ Top ∧ 𝑅 ∈ Top) → (𝑆 ×t 𝑅) ∈ Top)
7067, 68, 69syl2anc 565 . . . . . . . . . . . . . . . 16 ((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) → (𝑆 ×t 𝑅) ∈ Top)
7170ad3antrrr 701 . . . . . . . . . . . . . . 15 (((((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) ∧ (𝑘 ∈ 𝒫 𝑆𝑣 ∈ (𝑆 ×t 𝑅))) ∧ (𝑆t 𝑘) ∈ Comp) ∧ (𝑤𝑋 ∧ (𝑘 × {𝑤}) ⊆ 𝑣)) → (𝑆 ×t 𝑅) ∈ Top)
72 vex 3352 . . . . . . . . . . . . . . . 16 𝑘 ∈ V
73 toponmax 20950 . . . . . . . . . . . . . . . . 17 (𝑅 ∈ (TopOn‘𝑋) → 𝑋𝑅)
7463, 73syl 17 . . . . . . . . . . . . . . . 16 (((((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) ∧ (𝑘 ∈ 𝒫 𝑆𝑣 ∈ (𝑆 ×t 𝑅))) ∧ (𝑆t 𝑘) ∈ Comp) ∧ (𝑤𝑋 ∧ (𝑘 × {𝑤}) ⊆ 𝑣)) → 𝑋𝑅)
75 xpexg 7106 . . . . . . . . . . . . . . . 16 ((𝑘 ∈ V ∧ 𝑋𝑅) → (𝑘 × 𝑋) ∈ V)
7672, 74, 75sylancr 567 . . . . . . . . . . . . . . 15 (((((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) ∧ (𝑘 ∈ 𝒫 𝑆𝑣 ∈ (𝑆 ×t 𝑅))) ∧ (𝑆t 𝑘) ∈ Comp) ∧ (𝑤𝑋 ∧ (𝑘 × {𝑤}) ⊆ 𝑣)) → (𝑘 × 𝑋) ∈ V)
77 simprr 748 . . . . . . . . . . . . . . . 16 (((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) ∧ (𝑘 ∈ 𝒫 𝑆𝑣 ∈ (𝑆 ×t 𝑅))) → 𝑣 ∈ (𝑆 ×t 𝑅))
7877ad2antrr 697 . . . . . . . . . . . . . . 15 (((((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) ∧ (𝑘 ∈ 𝒫 𝑆𝑣 ∈ (𝑆 ×t 𝑅))) ∧ (𝑆t 𝑘) ∈ Comp) ∧ (𝑤𝑋 ∧ (𝑘 × {𝑤}) ⊆ 𝑣)) → 𝑣 ∈ (𝑆 ×t 𝑅))
79 elrestr 16296 . . . . . . . . . . . . . . 15 (((𝑆 ×t 𝑅) ∈ Top ∧ (𝑘 × 𝑋) ∈ V ∧ 𝑣 ∈ (𝑆 ×t 𝑅)) → (𝑣 ∩ (𝑘 × 𝑋)) ∈ ((𝑆 ×t 𝑅) ↾t (𝑘 × 𝑋)))
8071, 76, 78, 79syl3anc 1475 . . . . . . . . . . . . . 14 (((((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) ∧ (𝑘 ∈ 𝒫 𝑆𝑣 ∈ (𝑆 ×t 𝑅))) ∧ (𝑆t 𝑘) ∈ Comp) ∧ (𝑤𝑋 ∧ (𝑘 × {𝑤}) ⊆ 𝑣)) → (𝑣 ∩ (𝑘 × 𝑋)) ∈ ((𝑆 ×t 𝑅) ↾t (𝑘 × 𝑋)))
8167ad3antrrr 701 . . . . . . . . . . . . . . . 16 (((((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) ∧ (𝑘 ∈ 𝒫 𝑆𝑣 ∈ (𝑆 ×t 𝑅))) ∧ (𝑆t 𝑘) ∈ Comp) ∧ (𝑤𝑋 ∧ (𝑘 × {𝑤}) ⊆ 𝑣)) → 𝑆 ∈ Top)
8272a1i 11 . . . . . . . . . . . . . . . 16 (((((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) ∧ (𝑘 ∈ 𝒫 𝑆𝑣 ∈ (𝑆 ×t 𝑅))) ∧ (𝑆t 𝑘) ∈ Comp) ∧ (𝑤𝑋 ∧ (𝑘 × {𝑤}) ⊆ 𝑣)) → 𝑘 ∈ V)
83 txrest 21654 . . . . . . . . . . . . . . . 16 (((𝑆 ∈ Top ∧ 𝑅 ∈ Top) ∧ (𝑘 ∈ V ∧ 𝑋𝑅)) → ((𝑆 ×t 𝑅) ↾t (𝑘 × 𝑋)) = ((𝑆t 𝑘) ×t (𝑅t 𝑋)))
8481, 65, 82, 74, 83syl22anc 1476 . . . . . . . . . . . . . . 15 (((((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) ∧ (𝑘 ∈ 𝒫 𝑆𝑣 ∈ (𝑆 ×t 𝑅))) ∧ (𝑆t 𝑘) ∈ Comp) ∧ (𝑤𝑋 ∧ (𝑘 × {𝑤}) ⊆ 𝑣)) → ((𝑆 ×t 𝑅) ↾t (𝑘 × 𝑋)) = ((𝑆t 𝑘) ×t (𝑅t 𝑋)))
85 toponuni 20938 . . . . . . . . . . . . . . . . . . 19 (𝑅 ∈ (TopOn‘𝑋) → 𝑋 = 𝑅)
8663, 85syl 17 . . . . . . . . . . . . . . . . . 18 (((((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) ∧ (𝑘 ∈ 𝒫 𝑆𝑣 ∈ (𝑆 ×t 𝑅))) ∧ (𝑆t 𝑘) ∈ Comp) ∧ (𝑤𝑋 ∧ (𝑘 × {𝑤}) ⊆ 𝑣)) → 𝑋 = 𝑅)
8786oveq2d 6808 . . . . . . . . . . . . . . . . 17 (((((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) ∧ (𝑘 ∈ 𝒫 𝑆𝑣 ∈ (𝑆 ×t 𝑅))) ∧ (𝑆t 𝑘) ∈ Comp) ∧ (𝑤𝑋 ∧ (𝑘 × {𝑤}) ⊆ 𝑣)) → (𝑅t 𝑋) = (𝑅t 𝑅))
8860restid 16301 . . . . . . . . . . . . . . . . . 18 (𝑅 ∈ (TopOn‘𝑋) → (𝑅t 𝑅) = 𝑅)
8963, 88syl 17 . . . . . . . . . . . . . . . . 17 (((((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) ∧ (𝑘 ∈ 𝒫 𝑆𝑣 ∈ (𝑆 ×t 𝑅))) ∧ (𝑆t 𝑘) ∈ Comp) ∧ (𝑤𝑋 ∧ (𝑘 × {𝑤}) ⊆ 𝑣)) → (𝑅t 𝑅) = 𝑅)
9087, 89eqtrd 2804 . . . . . . . . . . . . . . . 16 (((((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) ∧ (𝑘 ∈ 𝒫 𝑆𝑣 ∈ (𝑆 ×t 𝑅))) ∧ (𝑆t 𝑘) ∈ Comp) ∧ (𝑤𝑋 ∧ (𝑘 × {𝑤}) ⊆ 𝑣)) → (𝑅t 𝑋) = 𝑅)
9190oveq2d 6808 . . . . . . . . . . . . . . 15 (((((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) ∧ (𝑘 ∈ 𝒫 𝑆𝑣 ∈ (𝑆 ×t 𝑅))) ∧ (𝑆t 𝑘) ∈ Comp) ∧ (𝑤𝑋 ∧ (𝑘 × {𝑤}) ⊆ 𝑣)) → ((𝑆t 𝑘) ×t (𝑅t 𝑋)) = ((𝑆t 𝑘) ×t 𝑅))
9284, 91eqtrd 2804 . . . . . . . . . . . . . 14 (((((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) ∧ (𝑘 ∈ 𝒫 𝑆𝑣 ∈ (𝑆 ×t 𝑅))) ∧ (𝑆t 𝑘) ∈ Comp) ∧ (𝑤𝑋 ∧ (𝑘 × {𝑤}) ⊆ 𝑣)) → ((𝑆 ×t 𝑅) ↾t (𝑘 × 𝑋)) = ((𝑆t 𝑘) ×t 𝑅))
9380, 92eleqtrd 2851 . . . . . . . . . . . . 13 (((((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) ∧ (𝑘 ∈ 𝒫 𝑆𝑣 ∈ (𝑆 ×t 𝑅))) ∧ (𝑆t 𝑘) ∈ Comp) ∧ (𝑤𝑋 ∧ (𝑘 × {𝑤}) ⊆ 𝑣)) → (𝑣 ∩ (𝑘 × 𝑋)) ∈ ((𝑆t 𝑘) ×t 𝑅))
9423adantr 466 . . . . . . . . . . . . . . . . 17 (((((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) ∧ (𝑘 ∈ 𝒫 𝑆𝑣 ∈ (𝑆 ×t 𝑅))) ∧ (𝑆t 𝑘) ∈ Comp) ∧ (𝑤𝑋 ∧ (𝑘 × {𝑤}) ⊆ 𝑣)) → 𝑆 ∈ (TopOn‘𝑌))
9526adantr 466 . . . . . . . . . . . . . . . . 17 (((((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) ∧ (𝑘 ∈ 𝒫 𝑆𝑣 ∈ (𝑆 ×t 𝑅))) ∧ (𝑆t 𝑘) ∈ Comp) ∧ (𝑤𝑋 ∧ (𝑘 × {𝑤}) ⊆ 𝑣)) → 𝑘𝑌)
96 resttopon 21185 . . . . . . . . . . . . . . . . 17 ((𝑆 ∈ (TopOn‘𝑌) ∧ 𝑘𝑌) → (𝑆t 𝑘) ∈ (TopOn‘𝑘))
9794, 95, 96syl2anc 565 . . . . . . . . . . . . . . . 16 (((((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) ∧ (𝑘 ∈ 𝒫 𝑆𝑣 ∈ (𝑆 ×t 𝑅))) ∧ (𝑆t 𝑘) ∈ Comp) ∧ (𝑤𝑋 ∧ (𝑘 × {𝑤}) ⊆ 𝑣)) → (𝑆t 𝑘) ∈ (TopOn‘𝑘))
98 toponuni 20938 . . . . . . . . . . . . . . . 16 ((𝑆t 𝑘) ∈ (TopOn‘𝑘) → 𝑘 = (𝑆t 𝑘))
9997, 98syl 17 . . . . . . . . . . . . . . 15 (((((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) ∧ (𝑘 ∈ 𝒫 𝑆𝑣 ∈ (𝑆 ×t 𝑅))) ∧ (𝑆t 𝑘) ∈ Comp) ∧ (𝑤𝑋 ∧ (𝑘 × {𝑤}) ⊆ 𝑣)) → 𝑘 = (𝑆t 𝑘))
10099xpeq1d 5278 . . . . . . . . . . . . . 14 (((((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) ∧ (𝑘 ∈ 𝒫 𝑆𝑣 ∈ (𝑆 ×t 𝑅))) ∧ (𝑆t 𝑘) ∈ Comp) ∧ (𝑤𝑋 ∧ (𝑘 × {𝑤}) ⊆ 𝑣)) → (𝑘 × {𝑤}) = ( (𝑆t 𝑘) × {𝑤}))
101 simprr 748 . . . . . . . . . . . . . . 15 (((((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) ∧ (𝑘 ∈ 𝒫 𝑆𝑣 ∈ (𝑆 ×t 𝑅))) ∧ (𝑆t 𝑘) ∈ Comp) ∧ (𝑤𝑋 ∧ (𝑘 × {𝑤}) ⊆ 𝑣)) → (𝑘 × {𝑤}) ⊆ 𝑣)
102 simprl 746 . . . . . . . . . . . . . . . . 17 (((((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) ∧ (𝑘 ∈ 𝒫 𝑆𝑣 ∈ (𝑆 ×t 𝑅))) ∧ (𝑆t 𝑘) ∈ Comp) ∧ (𝑤𝑋 ∧ (𝑘 × {𝑤}) ⊆ 𝑣)) → 𝑤𝑋)
103102snssd 4473 . . . . . . . . . . . . . . . 16 (((((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) ∧ (𝑘 ∈ 𝒫 𝑆𝑣 ∈ (𝑆 ×t 𝑅))) ∧ (𝑆t 𝑘) ∈ Comp) ∧ (𝑤𝑋 ∧ (𝑘 × {𝑤}) ⊆ 𝑣)) → {𝑤} ⊆ 𝑋)
104 xpss2 5268 . . . . . . . . . . . . . . . 16 ({𝑤} ⊆ 𝑋 → (𝑘 × {𝑤}) ⊆ (𝑘 × 𝑋))
105103, 104syl 17 . . . . . . . . . . . . . . 15 (((((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) ∧ (𝑘 ∈ 𝒫 𝑆𝑣 ∈ (𝑆 ×t 𝑅))) ∧ (𝑆t 𝑘) ∈ Comp) ∧ (𝑤𝑋 ∧ (𝑘 × {𝑤}) ⊆ 𝑣)) → (𝑘 × {𝑤}) ⊆ (𝑘 × 𝑋))
106101, 105ssind 3983 . . . . . . . . . . . . . 14 (((((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) ∧ (𝑘 ∈ 𝒫 𝑆𝑣 ∈ (𝑆 ×t 𝑅))) ∧ (𝑆t 𝑘) ∈ Comp) ∧ (𝑤𝑋 ∧ (𝑘 × {𝑤}) ⊆ 𝑣)) → (𝑘 × {𝑤}) ⊆ (𝑣 ∩ (𝑘 × 𝑋)))
107100, 106eqsstr3d 3787 . . . . . . . . . . . . 13 (((((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) ∧ (𝑘 ∈ 𝒫 𝑆𝑣 ∈ (𝑆 ×t 𝑅))) ∧ (𝑆t 𝑘) ∈ Comp) ∧ (𝑤𝑋 ∧ (𝑘 × {𝑤}) ⊆ 𝑣)) → ( (𝑆t 𝑘) × {𝑤}) ⊆ (𝑣 ∩ (𝑘 × 𝑋)))
108102, 86eleqtrd 2851 . . . . . . . . . . . . 13 (((((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) ∧ (𝑘 ∈ 𝒫 𝑆𝑣 ∈ (𝑆 ×t 𝑅))) ∧ (𝑆t 𝑘) ∈ Comp) ∧ (𝑤𝑋 ∧ (𝑘 × {𝑤}) ⊆ 𝑣)) → 𝑤 𝑅)
10959, 60, 61, 65, 93, 107, 108txtube 21663 . . . . . . . . . . . 12 (((((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) ∧ (𝑘 ∈ 𝒫 𝑆𝑣 ∈ (𝑆 ×t 𝑅))) ∧ (𝑆t 𝑘) ∈ Comp) ∧ (𝑤𝑋 ∧ (𝑘 × {𝑤}) ⊆ 𝑣)) → ∃𝑟𝑅 (𝑤𝑟 ∧ ( (𝑆t 𝑘) × 𝑟) ⊆ (𝑣 ∩ (𝑘 × 𝑋))))
110 toponss 20951 . . . . . . . . . . . . . . . . 17 ((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑟𝑅) → 𝑟𝑋)
11163, 110sylan 561 . . . . . . . . . . . . . . . 16 ((((((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) ∧ (𝑘 ∈ 𝒫 𝑆𝑣 ∈ (𝑆 ×t 𝑅))) ∧ (𝑆t 𝑘) ∈ Comp) ∧ (𝑤𝑋 ∧ (𝑘 × {𝑤}) ⊆ 𝑣)) ∧ 𝑟𝑅) → 𝑟𝑋)
112 ssrab 3827 . . . . . . . . . . . . . . . . 17 (𝑟 ⊆ {𝑥𝑋 ∣ (𝑘 × {𝑥}) ⊆ 𝑣} ↔ (𝑟𝑋 ∧ ∀𝑥𝑟 (𝑘 × {𝑥}) ⊆ 𝑣))
113112baib 517 . . . . . . . . . . . . . . . 16 (𝑟𝑋 → (𝑟 ⊆ {𝑥𝑋 ∣ (𝑘 × {𝑥}) ⊆ 𝑣} ↔ ∀𝑥𝑟 (𝑘 × {𝑥}) ⊆ 𝑣))
114111, 113syl 17 . . . . . . . . . . . . . . 15 ((((((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) ∧ (𝑘 ∈ 𝒫 𝑆𝑣 ∈ (𝑆 ×t 𝑅))) ∧ (𝑆t 𝑘) ∈ Comp) ∧ (𝑤𝑋 ∧ (𝑘 × {𝑤}) ⊆ 𝑣)) ∧ 𝑟𝑅) → (𝑟 ⊆ {𝑥𝑋 ∣ (𝑘 × {𝑥}) ⊆ 𝑣} ↔ ∀𝑥𝑟 (𝑘 × {𝑥}) ⊆ 𝑣))
115 xpss2 5268 . . . . . . . . . . . . . . . . . 18 (𝑟𝑋 → (𝑘 × 𝑟) ⊆ (𝑘 × 𝑋))
116111, 115syl 17 . . . . . . . . . . . . . . . . 17 ((((((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) ∧ (𝑘 ∈ 𝒫 𝑆𝑣 ∈ (𝑆 ×t 𝑅))) ∧ (𝑆t 𝑘) ∈ Comp) ∧ (𝑤𝑋 ∧ (𝑘 × {𝑤}) ⊆ 𝑣)) ∧ 𝑟𝑅) → (𝑘 × 𝑟) ⊆ (𝑘 × 𝑋))
117116biantrud 515 . . . . . . . . . . . . . . . 16 ((((((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) ∧ (𝑘 ∈ 𝒫 𝑆𝑣 ∈ (𝑆 ×t 𝑅))) ∧ (𝑆t 𝑘) ∈ Comp) ∧ (𝑤𝑋 ∧ (𝑘 × {𝑤}) ⊆ 𝑣)) ∧ 𝑟𝑅) → ((𝑘 × 𝑟) ⊆ 𝑣 ↔ ((𝑘 × 𝑟) ⊆ 𝑣 ∧ (𝑘 × 𝑟) ⊆ (𝑘 × 𝑋))))
118 iunid 4707 . . . . . . . . . . . . . . . . . . . 20 𝑥𝑟 {𝑥} = 𝑟
119118xpeq2i 5276 . . . . . . . . . . . . . . . . . . 19 (𝑘 × 𝑥𝑟 {𝑥}) = (𝑘 × 𝑟)
120 xpiundi 5313 . . . . . . . . . . . . . . . . . . 19 (𝑘 × 𝑥𝑟 {𝑥}) = 𝑥𝑟 (𝑘 × {𝑥})
121119, 120eqtr3i 2794 . . . . . . . . . . . . . . . . . 18 (𝑘 × 𝑟) = 𝑥𝑟 (𝑘 × {𝑥})
122121sseq1i 3776 . . . . . . . . . . . . . . . . 17 ((𝑘 × 𝑟) ⊆ 𝑣 𝑥𝑟 (𝑘 × {𝑥}) ⊆ 𝑣)
123 iunss 4693 . . . . . . . . . . . . . . . . 17 ( 𝑥𝑟 (𝑘 × {𝑥}) ⊆ 𝑣 ↔ ∀𝑥𝑟 (𝑘 × {𝑥}) ⊆ 𝑣)
124122, 123bitri 264 . . . . . . . . . . . . . . . 16 ((𝑘 × 𝑟) ⊆ 𝑣 ↔ ∀𝑥𝑟 (𝑘 × {𝑥}) ⊆ 𝑣)
125 ssin 3981 . . . . . . . . . . . . . . . 16 (((𝑘 × 𝑟) ⊆ 𝑣 ∧ (𝑘 × 𝑟) ⊆ (𝑘 × 𝑋)) ↔ (𝑘 × 𝑟) ⊆ (𝑣 ∩ (𝑘 × 𝑋)))
126117, 124, 1253bitr3g 302 . . . . . . . . . . . . . . 15 ((((((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) ∧ (𝑘 ∈ 𝒫 𝑆𝑣 ∈ (𝑆 ×t 𝑅))) ∧ (𝑆t 𝑘) ∈ Comp) ∧ (𝑤𝑋 ∧ (𝑘 × {𝑤}) ⊆ 𝑣)) ∧ 𝑟𝑅) → (∀𝑥𝑟 (𝑘 × {𝑥}) ⊆ 𝑣 ↔ (𝑘 × 𝑟) ⊆ (𝑣 ∩ (𝑘 × 𝑋))))
12799adantr 466 . . . . . . . . . . . . . . . . 17 ((((((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) ∧ (𝑘 ∈ 𝒫 𝑆𝑣 ∈ (𝑆 ×t 𝑅))) ∧ (𝑆t 𝑘) ∈ Comp) ∧ (𝑤𝑋 ∧ (𝑘 × {𝑤}) ⊆ 𝑣)) ∧ 𝑟𝑅) → 𝑘 = (𝑆t 𝑘))
128127xpeq1d 5278 . . . . . . . . . . . . . . . 16 ((((((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) ∧ (𝑘 ∈ 𝒫 𝑆𝑣 ∈ (𝑆 ×t 𝑅))) ∧ (𝑆t 𝑘) ∈ Comp) ∧ (𝑤𝑋 ∧ (𝑘 × {𝑤}) ⊆ 𝑣)) ∧ 𝑟𝑅) → (𝑘 × 𝑟) = ( (𝑆t 𝑘) × 𝑟))
129128sseq1d 3779 . . . . . . . . . . . . . . 15 ((((((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) ∧ (𝑘 ∈ 𝒫 𝑆𝑣 ∈ (𝑆 ×t 𝑅))) ∧ (𝑆t 𝑘) ∈ Comp) ∧ (𝑤𝑋 ∧ (𝑘 × {𝑤}) ⊆ 𝑣)) ∧ 𝑟𝑅) → ((𝑘 × 𝑟) ⊆ (𝑣 ∩ (𝑘 × 𝑋)) ↔ ( (𝑆t 𝑘) × 𝑟) ⊆ (𝑣 ∩ (𝑘 × 𝑋))))
130114, 126, 1293bitrd 294 . . . . . . . . . . . . . 14 ((((((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) ∧ (𝑘 ∈ 𝒫 𝑆𝑣 ∈ (𝑆 ×t 𝑅))) ∧ (𝑆t 𝑘) ∈ Comp) ∧ (𝑤𝑋 ∧ (𝑘 × {𝑤}) ⊆ 𝑣)) ∧ 𝑟𝑅) → (𝑟 ⊆ {𝑥𝑋 ∣ (𝑘 × {𝑥}) ⊆ 𝑣} ↔ ( (𝑆t 𝑘) × 𝑟) ⊆ (𝑣 ∩ (𝑘 × 𝑋))))
131130anbi2d 606 . . . . . . . . . . . . 13 ((((((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) ∧ (𝑘 ∈ 𝒫 𝑆𝑣 ∈ (𝑆 ×t 𝑅))) ∧ (𝑆t 𝑘) ∈ Comp) ∧ (𝑤𝑋 ∧ (𝑘 × {𝑤}) ⊆ 𝑣)) ∧ 𝑟𝑅) → ((𝑤𝑟𝑟 ⊆ {𝑥𝑋 ∣ (𝑘 × {𝑥}) ⊆ 𝑣}) ↔ (𝑤𝑟 ∧ ( (𝑆t 𝑘) × 𝑟) ⊆ (𝑣 ∩ (𝑘 × 𝑋)))))
132131rexbidva 3196 . . . . . . . . . . . 12 (((((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) ∧ (𝑘 ∈ 𝒫 𝑆𝑣 ∈ (𝑆 ×t 𝑅))) ∧ (𝑆t 𝑘) ∈ Comp) ∧ (𝑤𝑋 ∧ (𝑘 × {𝑤}) ⊆ 𝑣)) → (∃𝑟𝑅 (𝑤𝑟𝑟 ⊆ {𝑥𝑋 ∣ (𝑘 × {𝑥}) ⊆ 𝑣}) ↔ ∃𝑟𝑅 (𝑤𝑟 ∧ ( (𝑆t 𝑘) × 𝑟) ⊆ (𝑣 ∩ (𝑘 × 𝑋)))))
133109, 132mpbird 247 . . . . . . . . . . 11 (((((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) ∧ (𝑘 ∈ 𝒫 𝑆𝑣 ∈ (𝑆 ×t 𝑅))) ∧ (𝑆t 𝑘) ∈ Comp) ∧ (𝑤𝑋 ∧ (𝑘 × {𝑤}) ⊆ 𝑣)) → ∃𝑟𝑅 (𝑤𝑟𝑟 ⊆ {𝑥𝑋 ∣ (𝑘 × {𝑥}) ⊆ 𝑣}))
13458, 133sylan2b 573 . . . . . . . . . 10 (((((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) ∧ (𝑘 ∈ 𝒫 𝑆𝑣 ∈ (𝑆 ×t 𝑅))) ∧ (𝑆t 𝑘) ∈ Comp) ∧ 𝑤 ∈ {𝑥𝑋 ∣ (𝑘 × {𝑥}) ⊆ 𝑣}) → ∃𝑟𝑅 (𝑤𝑟𝑟 ⊆ {𝑥𝑋 ∣ (𝑘 × {𝑥}) ⊆ 𝑣}))
135134ralrimiva 3114 . . . . . . . . 9 ((((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) ∧ (𝑘 ∈ 𝒫 𝑆𝑣 ∈ (𝑆 ×t 𝑅))) ∧ (𝑆t 𝑘) ∈ Comp) → ∀𝑤 ∈ {𝑥𝑋 ∣ (𝑘 × {𝑥}) ⊆ 𝑣}∃𝑟𝑅 (𝑤𝑟𝑟 ⊆ {𝑥𝑋 ∣ (𝑘 × {𝑥}) ⊆ 𝑣}))
136 eltop2 20999 . . . . . . . . . 10 (𝑅 ∈ Top → ({𝑥𝑋 ∣ (𝑘 × {𝑥}) ⊆ 𝑣} ∈ 𝑅 ↔ ∀𝑤 ∈ {𝑥𝑋 ∣ (𝑘 × {𝑥}) ⊆ 𝑣}∃𝑟𝑅 (𝑤𝑟𝑟 ⊆ {𝑥𝑋 ∣ (𝑘 × {𝑥}) ⊆ 𝑣})))
13714, 68, 1363syl 18 . . . . . . . . 9 ((((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) ∧ (𝑘 ∈ 𝒫 𝑆𝑣 ∈ (𝑆 ×t 𝑅))) ∧ (𝑆t 𝑘) ∈ Comp) → ({𝑥𝑋 ∣ (𝑘 × {𝑥}) ⊆ 𝑣} ∈ 𝑅 ↔ ∀𝑤 ∈ {𝑥𝑋 ∣ (𝑘 × {𝑥}) ⊆ 𝑣}∃𝑟𝑅 (𝑤𝑟𝑟 ⊆ {𝑥𝑋 ∣ (𝑘 × {𝑥}) ⊆ 𝑣})))
138135, 137mpbird 247 . . . . . . . 8 ((((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) ∧ (𝑘 ∈ 𝒫 𝑆𝑣 ∈ (𝑆 ×t 𝑅))) ∧ (𝑆t 𝑘) ∈ Comp) → {𝑥𝑋 ∣ (𝑘 × {𝑥}) ⊆ 𝑣} ∈ 𝑅)
13954, 138eqeltrd 2849 . . . . . . 7 ((((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) ∧ (𝑘 ∈ 𝒫 𝑆𝑣 ∈ (𝑆 ×t 𝑅))) ∧ (𝑆t 𝑘) ∈ Comp) → {𝑥𝑋 ∣ (𝑦𝑌 ↦ ⟨𝑦, 𝑥⟩) ∈ {𝑓 ∈ (𝑆 Cn (𝑆 ×t 𝑅)) ∣ (𝑓𝑘) ⊆ 𝑣}} ∈ 𝑅)
140 imaeq2 5603 . . . . . . . . 9 (𝑧 = {𝑓 ∈ (𝑆 Cn (𝑆 ×t 𝑅)) ∣ (𝑓𝑘) ⊆ 𝑣} → (𝐹𝑧) = (𝐹 “ {𝑓 ∈ (𝑆 Cn (𝑆 ×t 𝑅)) ∣ (𝑓𝑘) ⊆ 𝑣}))
1417mptpreima 5772 . . . . . . . . 9 (𝐹 “ {𝑓 ∈ (𝑆 Cn (𝑆 ×t 𝑅)) ∣ (𝑓𝑘) ⊆ 𝑣}) = {𝑥𝑋 ∣ (𝑦𝑌 ↦ ⟨𝑦, 𝑥⟩) ∈ {𝑓 ∈ (𝑆 Cn (𝑆 ×t 𝑅)) ∣ (𝑓𝑘) ⊆ 𝑣}}
142140, 141syl6eq 2820 . . . . . . . 8 (𝑧 = {𝑓 ∈ (𝑆 Cn (𝑆 ×t 𝑅)) ∣ (𝑓𝑘) ⊆ 𝑣} → (𝐹𝑧) = {𝑥𝑋 ∣ (𝑦𝑌 ↦ ⟨𝑦, 𝑥⟩) ∈ {𝑓 ∈ (𝑆 Cn (𝑆 ×t 𝑅)) ∣ (𝑓𝑘) ⊆ 𝑣}})
143142eleq1d 2834 . . . . . . 7 (𝑧 = {𝑓 ∈ (𝑆 Cn (𝑆 ×t 𝑅)) ∣ (𝑓𝑘) ⊆ 𝑣} → ((𝐹𝑧) ∈ 𝑅 ↔ {𝑥𝑋 ∣ (𝑦𝑌 ↦ ⟨𝑦, 𝑥⟩) ∈ {𝑓 ∈ (𝑆 Cn (𝑆 ×t 𝑅)) ∣ (𝑓𝑘) ⊆ 𝑣}} ∈ 𝑅))
144139, 143syl5ibrcom 237 . . . . . 6 ((((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) ∧ (𝑘 ∈ 𝒫 𝑆𝑣 ∈ (𝑆 ×t 𝑅))) ∧ (𝑆t 𝑘) ∈ Comp) → (𝑧 = {𝑓 ∈ (𝑆 Cn (𝑆 ×t 𝑅)) ∣ (𝑓𝑘) ⊆ 𝑣} → (𝐹𝑧) ∈ 𝑅))
145144expimpd 441 . . . . 5 (((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) ∧ (𝑘 ∈ 𝒫 𝑆𝑣 ∈ (𝑆 ×t 𝑅))) → (((𝑆t 𝑘) ∈ Comp ∧ 𝑧 = {𝑓 ∈ (𝑆 Cn (𝑆 ×t 𝑅)) ∣ (𝑓𝑘) ⊆ 𝑣}) → (𝐹𝑧) ∈ 𝑅))
146145rexlimdvva 3185 . . . 4 ((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) → (∃𝑘 ∈ 𝒫 𝑆𝑣 ∈ (𝑆 ×t 𝑅)((𝑆t 𝑘) ∈ Comp ∧ 𝑧 = {𝑓 ∈ (𝑆 Cn (𝑆 ×t 𝑅)) ∣ (𝑓𝑘) ⊆ 𝑣}) → (𝐹𝑧) ∈ 𝑅))
14713, 146syl5bi 232 . . 3 ((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) → (𝑧 ∈ ran (𝑘 ∈ {𝑤 ∈ 𝒫 𝑆 ∣ (𝑆t 𝑤) ∈ Comp}, 𝑣 ∈ (𝑆 ×t 𝑅) ↦ {𝑓 ∈ (𝑆 Cn (𝑆 ×t 𝑅)) ∣ (𝑓𝑘) ⊆ 𝑣}) → (𝐹𝑧) ∈ 𝑅))
148147ralrimiv 3113 . 2 ((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) → ∀𝑧 ∈ ran (𝑘 ∈ {𝑤 ∈ 𝒫 𝑆 ∣ (𝑆t 𝑤) ∈ Comp}, 𝑣 ∈ (𝑆 ×t 𝑅) ↦ {𝑓 ∈ (𝑆 Cn (𝑆 ×t 𝑅)) ∣ (𝑓𝑘) ⊆ 𝑣})(𝐹𝑧) ∈ 𝑅)
149 simpl 468 . . 3 ((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) → 𝑅 ∈ (TopOn‘𝑋))
150 ovex 6822 . . . . . 6 (𝑆 Cn (𝑆 ×t 𝑅)) ∈ V
151150pwex 4976 . . . . 5 𝒫 (𝑆 Cn (𝑆 ×t 𝑅)) ∈ V
1529, 10, 11xkotf 21608 . . . . . 6 (𝑘 ∈ {𝑤 ∈ 𝒫 𝑆 ∣ (𝑆t 𝑤) ∈ Comp}, 𝑣 ∈ (𝑆 ×t 𝑅) ↦ {𝑓 ∈ (𝑆 Cn (𝑆 ×t 𝑅)) ∣ (𝑓𝑘) ⊆ 𝑣}):({𝑤 ∈ 𝒫 𝑆 ∣ (𝑆t 𝑤) ∈ Comp} × (𝑆 ×t 𝑅))⟶𝒫 (𝑆 Cn (𝑆 ×t 𝑅))
153 frn 6193 . . . . . 6 ((𝑘 ∈ {𝑤 ∈ 𝒫 𝑆 ∣ (𝑆t 𝑤) ∈ Comp}, 𝑣 ∈ (𝑆 ×t 𝑅) ↦ {𝑓 ∈ (𝑆 Cn (𝑆 ×t 𝑅)) ∣ (𝑓𝑘) ⊆ 𝑣}):({𝑤 ∈ 𝒫 𝑆 ∣ (𝑆t 𝑤) ∈ Comp} × (𝑆 ×t 𝑅))⟶𝒫 (𝑆 Cn (𝑆 ×t 𝑅)) → ran (𝑘 ∈ {𝑤 ∈ 𝒫 𝑆 ∣ (𝑆t 𝑤) ∈ Comp}, 𝑣 ∈ (𝑆 ×t 𝑅) ↦ {𝑓 ∈ (𝑆 Cn (𝑆 ×t 𝑅)) ∣ (𝑓𝑘) ⊆ 𝑣}) ⊆ 𝒫 (𝑆 Cn (𝑆 ×t 𝑅)))
154152, 153ax-mp 5 . . . . 5 ran (𝑘 ∈ {𝑤 ∈ 𝒫 𝑆 ∣ (𝑆t 𝑤) ∈ Comp}, 𝑣 ∈ (𝑆 ×t 𝑅) ↦ {𝑓 ∈ (𝑆 Cn (𝑆 ×t 𝑅)) ∣ (𝑓𝑘) ⊆ 𝑣}) ⊆ 𝒫 (𝑆 Cn (𝑆 ×t 𝑅))
155151, 154ssexi 4934 . . . 4 ran (𝑘 ∈ {𝑤 ∈ 𝒫 𝑆 ∣ (𝑆t 𝑤) ∈ Comp}, 𝑣 ∈ (𝑆 ×t 𝑅) ↦ {𝑓 ∈ (𝑆 Cn (𝑆 ×t 𝑅)) ∣ (𝑓𝑘) ⊆ 𝑣}) ∈ V
156155a1i 11 . . 3 ((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) → ran (𝑘 ∈ {𝑤 ∈ 𝒫 𝑆 ∣ (𝑆t 𝑤) ∈ Comp}, 𝑣 ∈ (𝑆 ×t 𝑅) ↦ {𝑓 ∈ (𝑆 Cn (𝑆 ×t 𝑅)) ∣ (𝑓𝑘) ⊆ 𝑣}) ∈ V)
1579, 10, 11xkoval 21610 . . . 4 ((𝑆 ∈ Top ∧ (𝑆 ×t 𝑅) ∈ Top) → ((𝑆 ×t 𝑅) ^ko 𝑆) = (topGen‘(fi‘ran (𝑘 ∈ {𝑤 ∈ 𝒫 𝑆 ∣ (𝑆t 𝑤) ∈ Comp}, 𝑣 ∈ (𝑆 ×t 𝑅) ↦ {𝑓 ∈ (𝑆 Cn (𝑆 ×t 𝑅)) ∣ (𝑓𝑘) ⊆ 𝑣}))))
15867, 70, 157syl2anc 565 . . 3 ((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) → ((𝑆 ×t 𝑅) ^ko 𝑆) = (topGen‘(fi‘ran (𝑘 ∈ {𝑤 ∈ 𝒫 𝑆 ∣ (𝑆t 𝑤) ∈ Comp}, 𝑣 ∈ (𝑆 ×t 𝑅) ↦ {𝑓 ∈ (𝑆 Cn (𝑆 ×t 𝑅)) ∣ (𝑓𝑘) ⊆ 𝑣}))))
159 eqid 2770 . . . . 5 ((𝑆 ×t 𝑅) ^ko 𝑆) = ((𝑆 ×t 𝑅) ^ko 𝑆)
160159xkotopon 21623 . . . 4 ((𝑆 ∈ Top ∧ (𝑆 ×t 𝑅) ∈ Top) → ((𝑆 ×t 𝑅) ^ko 𝑆) ∈ (TopOn‘(𝑆 Cn (𝑆 ×t 𝑅))))
16167, 70, 160syl2anc 565 . . 3 ((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) → ((𝑆 ×t 𝑅) ^ko 𝑆) ∈ (TopOn‘(𝑆 Cn (𝑆 ×t 𝑅))))
162149, 156, 158, 161subbascn 21278 . 2 ((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) → (𝐹 ∈ (𝑅 Cn ((𝑆 ×t 𝑅) ^ko 𝑆)) ↔ (𝐹:𝑋⟶(𝑆 Cn (𝑆 ×t 𝑅)) ∧ ∀𝑧 ∈ ran (𝑘 ∈ {𝑤 ∈ 𝒫 𝑆 ∣ (𝑆t 𝑤) ∈ Comp}, 𝑣 ∈ (𝑆 ×t 𝑅) ↦ {𝑓 ∈ (𝑆 Cn (𝑆 ×t 𝑅)) ∣ (𝑓𝑘) ⊆ 𝑣})(𝐹𝑧) ∈ 𝑅)))
1638, 148, 162mpbir2and 684 1 ((𝑅 ∈ (TopOn‘𝑋) ∧ 𝑆 ∈ (TopOn‘𝑌)) → 𝐹 ∈ (𝑅 Cn ((𝑆 ×t 𝑅) ^ko 𝑆)))
 Colors of variables: wff setvar class Syntax hints:   → wi 4   ↔ wb 196   ∧ wa 382   = wceq 1630   ∈ wcel 2144  ∀wral 3060  ∃wrex 3061  {crab 3064  Vcvv 3349   ∩ cin 3720   ⊆ wss 3721  𝒫 cpw 4295  {csn 4314  ⟨cop 4320  ∪ cuni 4572  ∪ ciun 4652   ↦ cmpt 4861   × cxp 5247  ◡ccnv 5248  dom cdm 5249  ran crn 5250   “ cima 5252  Fun wfun 6025  ⟶wf 6027  ‘cfv 6031  (class class class)co 6792   ↦ cmpt2 6794  ficfi 8471   ↾t crest 16288  topGenctg 16305  Topctop 20917  TopOnctopon 20934   Cn ccn 21248  Compccmp 21409   ×t ctx 21583   ^ko cxko 21584 This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1869  ax-4 1884  ax-5 1990  ax-6 2056  ax-7 2092  ax-8 2146  ax-9 2153  ax-10 2173  ax-11 2189  ax-12 2202  ax-13 2407  ax-ext 2750  ax-rep 4902  ax-sep 4912  ax-nul 4920  ax-pow 4971  ax-pr 5034  ax-un 7095 This theorem depends on definitions:  df-bi 197  df-an 383  df-or 827  df-3or 1071  df-3an 1072  df-tru 1633  df-ex 1852  df-nf 1857  df-sb 2049  df-eu 2621  df-mo 2622  df-clab 2757  df-cleq 2763  df-clel 2766  df-nfc 2901  df-ne 2943  df-ral 3065  df-rex 3066  df-reu 3067  df-rab 3069  df-v 3351  df-sbc 3586  df-csb 3681  df-dif 3724  df-un 3726  df-in 3728  df-ss 3735  df-pss 3737  df-nul 4062  df-if 4224  df-pw 4297  df-sn 4315  df-pr 4317  df-tp 4319  df-op 4321  df-uni 4573  df-int 4610  df-iun 4654  df-iin 4655  df-br 4785  df-opab 4845  df-mpt 4862  df-tr 4885  df-id 5157  df-eprel 5162  df-po 5170  df-so 5171  df-fr 5208  df-we 5210  df-xp 5255  df-rel 5256  df-cnv 5257  df-co 5258  df-dm 5259  df-rn 5260  df-res 5261  df-ima 5262  df-pred 5823  df-ord 5869  df-on 5870  df-lim 5871  df-suc 5872  df-iota 5994  df-fun 6033  df-fn 6034  df-f 6035  df-f1 6036  df-fo 6037  df-f1o 6038  df-fv 6039  df-ov 6795  df-oprab 6796  df-mpt2 6797  df-om 7212  df-1st 7314  df-2nd 7315  df-wrecs 7558  df-recs 7620  df-rdg 7658  df-1o 7712  df-oadd 7716  df-er 7895  df-map 8010  df-en 8109  df-dom 8110  df-fin 8112  df-fi 8472  df-rest 16290  df-topgen 16311  df-top 20918  df-topon 20935  df-bases 20970  df-cn 21251  df-cnp 21252  df-cmp 21410  df-tx 21585  df-xko 21586 This theorem is referenced by:  cnmpt2k  21711
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