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Mirrors > Home > MPE Home > Th. List > prdstps | Structured version Visualization version GIF version |
Description: A structure product of topological spaces is a topological space. (Contributed by Mario Carneiro, 27-Aug-2015.) |
Ref | Expression |
---|---|
prdstopn.y | ⊢ 𝑌 = (𝑆Xs𝑅) |
prdstopn.s | ⊢ (𝜑 → 𝑆 ∈ 𝑉) |
prdstopn.i | ⊢ (𝜑 → 𝐼 ∈ 𝑊) |
prdstps.r | ⊢ (𝜑 → 𝑅:𝐼⟶TopSp) |
Ref | Expression |
---|---|
prdstps | ⊢ (𝜑 → 𝑌 ∈ TopSp) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | prdstopn.i | . . . 4 ⊢ (𝜑 → 𝐼 ∈ 𝑊) | |
2 | prdstps.r | . . . . . . 7 ⊢ (𝜑 → 𝑅:𝐼⟶TopSp) | |
3 | 2 | ffvelrnda 6853 | . . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐼) → (𝑅‘𝑥) ∈ TopSp) |
4 | eqid 2823 | . . . . . . 7 ⊢ (Base‘(𝑅‘𝑥)) = (Base‘(𝑅‘𝑥)) | |
5 | eqid 2823 | . . . . . . 7 ⊢ (TopOpen‘(𝑅‘𝑥)) = (TopOpen‘(𝑅‘𝑥)) | |
6 | 4, 5 | istps 21544 | . . . . . 6 ⊢ ((𝑅‘𝑥) ∈ TopSp ↔ (TopOpen‘(𝑅‘𝑥)) ∈ (TopOn‘(Base‘(𝑅‘𝑥)))) |
7 | 3, 6 | sylib 220 | . . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐼) → (TopOpen‘(𝑅‘𝑥)) ∈ (TopOn‘(Base‘(𝑅‘𝑥)))) |
8 | 7 | ralrimiva 3184 | . . . 4 ⊢ (𝜑 → ∀𝑥 ∈ 𝐼 (TopOpen‘(𝑅‘𝑥)) ∈ (TopOn‘(Base‘(𝑅‘𝑥)))) |
9 | eqid 2823 | . . . . 5 ⊢ (∏t‘(𝑥 ∈ 𝐼 ↦ (TopOpen‘(𝑅‘𝑥)))) = (∏t‘(𝑥 ∈ 𝐼 ↦ (TopOpen‘(𝑅‘𝑥)))) | |
10 | 9 | pttopon 22206 | . . . 4 ⊢ ((𝐼 ∈ 𝑊 ∧ ∀𝑥 ∈ 𝐼 (TopOpen‘(𝑅‘𝑥)) ∈ (TopOn‘(Base‘(𝑅‘𝑥)))) → (∏t‘(𝑥 ∈ 𝐼 ↦ (TopOpen‘(𝑅‘𝑥)))) ∈ (TopOn‘X𝑥 ∈ 𝐼 (Base‘(𝑅‘𝑥)))) |
11 | 1, 8, 10 | syl2anc 586 | . . 3 ⊢ (𝜑 → (∏t‘(𝑥 ∈ 𝐼 ↦ (TopOpen‘(𝑅‘𝑥)))) ∈ (TopOn‘X𝑥 ∈ 𝐼 (Base‘(𝑅‘𝑥)))) |
12 | prdstopn.y | . . . . 5 ⊢ 𝑌 = (𝑆Xs𝑅) | |
13 | prdstopn.s | . . . . 5 ⊢ (𝜑 → 𝑆 ∈ 𝑉) | |
14 | fex 6991 | . . . . . 6 ⊢ ((𝑅:𝐼⟶TopSp ∧ 𝐼 ∈ 𝑊) → 𝑅 ∈ V) | |
15 | 2, 1, 14 | syl2anc 586 | . . . . 5 ⊢ (𝜑 → 𝑅 ∈ V) |
16 | eqid 2823 | . . . . 5 ⊢ (Base‘𝑌) = (Base‘𝑌) | |
17 | 2 | fdmd 6525 | . . . . 5 ⊢ (𝜑 → dom 𝑅 = 𝐼) |
18 | eqid 2823 | . . . . 5 ⊢ (TopSet‘𝑌) = (TopSet‘𝑌) | |
19 | 12, 13, 15, 16, 17, 18 | prdstset 16741 | . . . 4 ⊢ (𝜑 → (TopSet‘𝑌) = (∏t‘(TopOpen ∘ 𝑅))) |
20 | topnfn 16701 | . . . . . . 7 ⊢ TopOpen Fn V | |
21 | dffn2 6518 | . . . . . . 7 ⊢ (TopOpen Fn V ↔ TopOpen:V⟶V) | |
22 | 20, 21 | mpbi 232 | . . . . . 6 ⊢ TopOpen:V⟶V |
23 | ssv 3993 | . . . . . . 7 ⊢ TopSp ⊆ V | |
24 | fss 6529 | . . . . . . 7 ⊢ ((𝑅:𝐼⟶TopSp ∧ TopSp ⊆ V) → 𝑅:𝐼⟶V) | |
25 | 2, 23, 24 | sylancl 588 | . . . . . 6 ⊢ (𝜑 → 𝑅:𝐼⟶V) |
26 | fcompt 6897 | . . . . . 6 ⊢ ((TopOpen:V⟶V ∧ 𝑅:𝐼⟶V) → (TopOpen ∘ 𝑅) = (𝑥 ∈ 𝐼 ↦ (TopOpen‘(𝑅‘𝑥)))) | |
27 | 22, 25, 26 | sylancr 589 | . . . . 5 ⊢ (𝜑 → (TopOpen ∘ 𝑅) = (𝑥 ∈ 𝐼 ↦ (TopOpen‘(𝑅‘𝑥)))) |
28 | 27 | fveq2d 6676 | . . . 4 ⊢ (𝜑 → (∏t‘(TopOpen ∘ 𝑅)) = (∏t‘(𝑥 ∈ 𝐼 ↦ (TopOpen‘(𝑅‘𝑥))))) |
29 | 19, 28 | eqtrd 2858 | . . 3 ⊢ (𝜑 → (TopSet‘𝑌) = (∏t‘(𝑥 ∈ 𝐼 ↦ (TopOpen‘(𝑅‘𝑥))))) |
30 | 12, 13, 15, 16, 17 | prdsbas 16732 | . . . 4 ⊢ (𝜑 → (Base‘𝑌) = X𝑥 ∈ 𝐼 (Base‘(𝑅‘𝑥))) |
31 | 30 | fveq2d 6676 | . . 3 ⊢ (𝜑 → (TopOn‘(Base‘𝑌)) = (TopOn‘X𝑥 ∈ 𝐼 (Base‘(𝑅‘𝑥)))) |
32 | 11, 29, 31 | 3eltr4d 2930 | . 2 ⊢ (𝜑 → (TopSet‘𝑌) ∈ (TopOn‘(Base‘𝑌))) |
33 | 16, 18 | tsettps 21551 | . 2 ⊢ ((TopSet‘𝑌) ∈ (TopOn‘(Base‘𝑌)) → 𝑌 ∈ TopSp) |
34 | 32, 33 | syl 17 | 1 ⊢ (𝜑 → 𝑌 ∈ TopSp) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 398 = wceq 1537 ∈ wcel 2114 ∀wral 3140 Vcvv 3496 ⊆ wss 3938 ↦ cmpt 5148 ∘ ccom 5561 Fn wfn 6352 ⟶wf 6353 ‘cfv 6357 (class class class)co 7158 Xcixp 8463 Basecbs 16485 TopSetcts 16573 TopOpenctopn 16697 ∏tcpt 16714 Xscprds 16721 TopOnctopon 21520 TopSpctps 21542 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2116 ax-9 2124 ax-10 2145 ax-11 2161 ax-12 2177 ax-ext 2795 ax-rep 5192 ax-sep 5205 ax-nul 5212 ax-pow 5268 ax-pr 5332 ax-un 7463 ax-cnex 10595 ax-resscn 10596 ax-1cn 10597 ax-icn 10598 ax-addcl 10599 ax-addrcl 10600 ax-mulcl 10601 ax-mulrcl 10602 ax-mulcom 10603 ax-addass 10604 ax-mulass 10605 ax-distr 10606 ax-i2m1 10607 ax-1ne0 10608 ax-1rid 10609 ax-rnegex 10610 ax-rrecex 10611 ax-cnre 10612 ax-pre-lttri 10613 ax-pre-lttrn 10614 ax-pre-ltadd 10615 ax-pre-mulgt0 10616 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3or 1084 df-3an 1085 df-tru 1540 df-ex 1781 df-nf 1785 df-sb 2070 df-mo 2622 df-eu 2654 df-clab 2802 df-cleq 2816 df-clel 2895 df-nfc 2965 df-ne 3019 df-nel 3126 df-ral 3145 df-rex 3146 df-reu 3147 df-rab 3149 df-v 3498 df-sbc 3775 df-csb 3886 df-dif 3941 df-un 3943 df-in 3945 df-ss 3954 df-pss 3956 df-nul 4294 df-if 4470 df-pw 4543 df-sn 4570 df-pr 4572 df-tp 4574 df-op 4576 df-uni 4841 df-int 4879 df-iun 4923 df-br 5069 df-opab 5131 df-mpt 5149 df-tr 5175 df-id 5462 df-eprel 5467 df-po 5476 df-so 5477 df-fr 5516 df-we 5518 df-xp 5563 df-rel 5564 df-cnv 5565 df-co 5566 df-dm 5567 df-rn 5568 df-res 5569 df-ima 5570 df-pred 6150 df-ord 6196 df-on 6197 df-lim 6198 df-suc 6199 df-iota 6316 df-fun 6359 df-fn 6360 df-f 6361 df-f1 6362 df-fo 6363 df-f1o 6364 df-fv 6365 df-riota 7116 df-ov 7161 df-oprab 7162 df-mpo 7163 df-om 7583 df-1st 7691 df-2nd 7692 df-wrecs 7949 df-recs 8010 df-rdg 8048 df-1o 8104 df-oadd 8108 df-er 8291 df-map 8410 df-ixp 8464 df-en 8512 df-dom 8513 df-sdom 8514 df-fin 8515 df-fi 8877 df-sup 8908 df-pnf 10679 df-mnf 10680 df-xr 10681 df-ltxr 10682 df-le 10683 df-sub 10874 df-neg 10875 df-nn 11641 df-2 11703 df-3 11704 df-4 11705 df-5 11706 df-6 11707 df-7 11708 df-8 11709 df-9 11710 df-n0 11901 df-z 11985 df-dec 12102 df-uz 12247 df-fz 12896 df-struct 16487 df-ndx 16488 df-slot 16489 df-base 16491 df-plusg 16580 df-mulr 16581 df-sca 16583 df-vsca 16584 df-ip 16585 df-tset 16586 df-ple 16587 df-ds 16589 df-hom 16591 df-cco 16592 df-rest 16698 df-topn 16699 df-topgen 16719 df-pt 16720 df-prds 16723 df-top 21504 df-topon 21521 df-topsp 21543 df-bases 21556 |
This theorem is referenced by: pwstps 22240 xpstps 22420 prdstmdd 22734 |
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