Mathbox for Glauco Siliprandi |
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Mirrors > Home > MPE Home > Th. List > Mathboxes > qndenserrn | Structured version Visualization version GIF version |
Description: n-dimensional rational numbers are dense in the space of n-dimensional real numbers, with respect to the n-dimensional standard topology. (Contributed by Glauco Siliprandi, 24-Dec-2020.) |
Ref | Expression |
---|---|
qndenserrn.i | ⊢ (𝜑 → 𝐼 ∈ Fin) |
qndenserrn.j | ⊢ 𝐽 = (TopOpen‘(ℝ^‘𝐼)) |
Ref | Expression |
---|---|
qndenserrn | ⊢ (𝜑 → ((cls‘𝐽)‘(ℚ ↑m 𝐼)) = (ℝ ↑m 𝐼)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | qndenserrn.i | . . . . 5 ⊢ (𝜑 → 𝐼 ∈ Fin) | |
2 | qndenserrn.j | . . . . . 6 ⊢ 𝐽 = (TopOpen‘(ℝ^‘𝐼)) | |
3 | 2 | rrxtop 43830 | . . . . 5 ⊢ (𝐼 ∈ Fin → 𝐽 ∈ Top) |
4 | 1, 3 | syl 17 | . . . 4 ⊢ (𝜑 → 𝐽 ∈ Top) |
5 | reex 10962 | . . . . . . 7 ⊢ ℝ ∈ V | |
6 | qssre 12699 | . . . . . . 7 ⊢ ℚ ⊆ ℝ | |
7 | mapss 8677 | . . . . . . 7 ⊢ ((ℝ ∈ V ∧ ℚ ⊆ ℝ) → (ℚ ↑m 𝐼) ⊆ (ℝ ↑m 𝐼)) | |
8 | 5, 6, 7 | mp2an 689 | . . . . . 6 ⊢ (ℚ ↑m 𝐼) ⊆ (ℝ ↑m 𝐼) |
9 | 8 | a1i 11 | . . . . 5 ⊢ (𝜑 → (ℚ ↑m 𝐼) ⊆ (ℝ ↑m 𝐼)) |
10 | eqid 2738 | . . . . . . . 8 ⊢ (ℝ^‘𝐼) = (ℝ^‘𝐼) | |
11 | eqid 2738 | . . . . . . . 8 ⊢ (Base‘(ℝ^‘𝐼)) = (Base‘(ℝ^‘𝐼)) | |
12 | 1, 10, 11 | rrxbasefi 24574 | . . . . . . 7 ⊢ (𝜑 → (Base‘(ℝ^‘𝐼)) = (ℝ ↑m 𝐼)) |
13 | 12 | eqcomd 2744 | . . . . . 6 ⊢ (𝜑 → (ℝ ↑m 𝐼) = (Base‘(ℝ^‘𝐼))) |
14 | rrxtps 43827 | . . . . . . 7 ⊢ (𝐼 ∈ Fin → (ℝ^‘𝐼) ∈ TopSp) | |
15 | eqid 2738 | . . . . . . . 8 ⊢ (TopOpen‘(ℝ^‘𝐼)) = (TopOpen‘(ℝ^‘𝐼)) | |
16 | 11, 15 | tpsuni 22085 | . . . . . . 7 ⊢ ((ℝ^‘𝐼) ∈ TopSp → (Base‘(ℝ^‘𝐼)) = ∪ (TopOpen‘(ℝ^‘𝐼))) |
17 | 1, 14, 16 | 3syl 18 | . . . . . 6 ⊢ (𝜑 → (Base‘(ℝ^‘𝐼)) = ∪ (TopOpen‘(ℝ^‘𝐼))) |
18 | 2 | unieqi 4852 | . . . . . . . 8 ⊢ ∪ 𝐽 = ∪ (TopOpen‘(ℝ^‘𝐼)) |
19 | 18 | eqcomi 2747 | . . . . . . 7 ⊢ ∪ (TopOpen‘(ℝ^‘𝐼)) = ∪ 𝐽 |
20 | 19 | a1i 11 | . . . . . 6 ⊢ (𝜑 → ∪ (TopOpen‘(ℝ^‘𝐼)) = ∪ 𝐽) |
21 | 13, 17, 20 | 3eqtrd 2782 | . . . . 5 ⊢ (𝜑 → (ℝ ↑m 𝐼) = ∪ 𝐽) |
22 | 9, 21 | sseqtrd 3961 | . . . 4 ⊢ (𝜑 → (ℚ ↑m 𝐼) ⊆ ∪ 𝐽) |
23 | eqid 2738 | . . . . 5 ⊢ ∪ 𝐽 = ∪ 𝐽 | |
24 | 23 | clsss3 22210 | . . . 4 ⊢ ((𝐽 ∈ Top ∧ (ℚ ↑m 𝐼) ⊆ ∪ 𝐽) → ((cls‘𝐽)‘(ℚ ↑m 𝐼)) ⊆ ∪ 𝐽) |
25 | 4, 22, 24 | syl2anc 584 | . . 3 ⊢ (𝜑 → ((cls‘𝐽)‘(ℚ ↑m 𝐼)) ⊆ ∪ 𝐽) |
26 | 21 | eqcomd 2744 | . . 3 ⊢ (𝜑 → ∪ 𝐽 = (ℝ ↑m 𝐼)) |
27 | 25, 26 | sseqtrd 3961 | . 2 ⊢ (𝜑 → ((cls‘𝐽)‘(ℚ ↑m 𝐼)) ⊆ (ℝ ↑m 𝐼)) |
28 | 1 | ad2antrr 723 | . . . . . . . . . 10 ⊢ (((𝜑 ∧ 𝑣 ∈ 𝐽) ∧ 𝑥 ∈ 𝑣) → 𝐼 ∈ Fin) |
29 | id 22 | . . . . . . . . . . . 12 ⊢ (𝑣 ∈ 𝐽 → 𝑣 ∈ 𝐽) | |
30 | 29, 2 | eleqtrdi 2849 | . . . . . . . . . . 11 ⊢ (𝑣 ∈ 𝐽 → 𝑣 ∈ (TopOpen‘(ℝ^‘𝐼))) |
31 | 30 | ad2antlr 724 | . . . . . . . . . 10 ⊢ (((𝜑 ∧ 𝑣 ∈ 𝐽) ∧ 𝑥 ∈ 𝑣) → 𝑣 ∈ (TopOpen‘(ℝ^‘𝐼))) |
32 | ne0i 4268 | . . . . . . . . . . 11 ⊢ (𝑥 ∈ 𝑣 → 𝑣 ≠ ∅) | |
33 | 32 | adantl 482 | . . . . . . . . . 10 ⊢ (((𝜑 ∧ 𝑣 ∈ 𝐽) ∧ 𝑥 ∈ 𝑣) → 𝑣 ≠ ∅) |
34 | 28, 15, 31, 33 | qndenserrnopn 43839 | . . . . . . . . 9 ⊢ (((𝜑 ∧ 𝑣 ∈ 𝐽) ∧ 𝑥 ∈ 𝑣) → ∃𝑦 ∈ (ℚ ↑m 𝐼)𝑦 ∈ 𝑣) |
35 | df-rex 3070 | . . . . . . . . 9 ⊢ (∃𝑦 ∈ (ℚ ↑m 𝐼)𝑦 ∈ 𝑣 ↔ ∃𝑦(𝑦 ∈ (ℚ ↑m 𝐼) ∧ 𝑦 ∈ 𝑣)) | |
36 | 34, 35 | sylib 217 | . . . . . . . 8 ⊢ (((𝜑 ∧ 𝑣 ∈ 𝐽) ∧ 𝑥 ∈ 𝑣) → ∃𝑦(𝑦 ∈ (ℚ ↑m 𝐼) ∧ 𝑦 ∈ 𝑣)) |
37 | simpr 485 | . . . . . . . . . . 11 ⊢ ((𝑦 ∈ (ℚ ↑m 𝐼) ∧ 𝑦 ∈ 𝑣) → 𝑦 ∈ 𝑣) | |
38 | simpl 483 | . . . . . . . . . . 11 ⊢ ((𝑦 ∈ (ℚ ↑m 𝐼) ∧ 𝑦 ∈ 𝑣) → 𝑦 ∈ (ℚ ↑m 𝐼)) | |
39 | 37, 38 | elind 4128 | . . . . . . . . . 10 ⊢ ((𝑦 ∈ (ℚ ↑m 𝐼) ∧ 𝑦 ∈ 𝑣) → 𝑦 ∈ (𝑣 ∩ (ℚ ↑m 𝐼))) |
40 | 39 | a1i 11 | . . . . . . . . 9 ⊢ (((𝜑 ∧ 𝑣 ∈ 𝐽) ∧ 𝑥 ∈ 𝑣) → ((𝑦 ∈ (ℚ ↑m 𝐼) ∧ 𝑦 ∈ 𝑣) → 𝑦 ∈ (𝑣 ∩ (ℚ ↑m 𝐼)))) |
41 | 40 | eximdv 1920 | . . . . . . . 8 ⊢ (((𝜑 ∧ 𝑣 ∈ 𝐽) ∧ 𝑥 ∈ 𝑣) → (∃𝑦(𝑦 ∈ (ℚ ↑m 𝐼) ∧ 𝑦 ∈ 𝑣) → ∃𝑦 𝑦 ∈ (𝑣 ∩ (ℚ ↑m 𝐼)))) |
42 | 36, 41 | mpd 15 | . . . . . . 7 ⊢ (((𝜑 ∧ 𝑣 ∈ 𝐽) ∧ 𝑥 ∈ 𝑣) → ∃𝑦 𝑦 ∈ (𝑣 ∩ (ℚ ↑m 𝐼))) |
43 | n0 4280 | . . . . . . 7 ⊢ ((𝑣 ∩ (ℚ ↑m 𝐼)) ≠ ∅ ↔ ∃𝑦 𝑦 ∈ (𝑣 ∩ (ℚ ↑m 𝐼))) | |
44 | 42, 43 | sylibr 233 | . . . . . 6 ⊢ (((𝜑 ∧ 𝑣 ∈ 𝐽) ∧ 𝑥 ∈ 𝑣) → (𝑣 ∩ (ℚ ↑m 𝐼)) ≠ ∅) |
45 | 44 | ex 413 | . . . . 5 ⊢ ((𝜑 ∧ 𝑣 ∈ 𝐽) → (𝑥 ∈ 𝑣 → (𝑣 ∩ (ℚ ↑m 𝐼)) ≠ ∅)) |
46 | 45 | adantlr 712 | . . . 4 ⊢ (((𝜑 ∧ 𝑥 ∈ (ℝ ↑m 𝐼)) ∧ 𝑣 ∈ 𝐽) → (𝑥 ∈ 𝑣 → (𝑣 ∩ (ℚ ↑m 𝐼)) ≠ ∅)) |
47 | 46 | ralrimiva 3103 | . . 3 ⊢ ((𝜑 ∧ 𝑥 ∈ (ℝ ↑m 𝐼)) → ∀𝑣 ∈ 𝐽 (𝑥 ∈ 𝑣 → (𝑣 ∩ (ℚ ↑m 𝐼)) ≠ ∅)) |
48 | 4 | adantr 481 | . . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ (ℝ ↑m 𝐼)) → 𝐽 ∈ Top) |
49 | 22 | adantr 481 | . . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ (ℝ ↑m 𝐼)) → (ℚ ↑m 𝐼) ⊆ ∪ 𝐽) |
50 | simpr 485 | . . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ (ℝ ↑m 𝐼)) → 𝑥 ∈ (ℝ ↑m 𝐼)) | |
51 | 21 | adantr 481 | . . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ (ℝ ↑m 𝐼)) → (ℝ ↑m 𝐼) = ∪ 𝐽) |
52 | 50, 51 | eleqtrd 2841 | . . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ (ℝ ↑m 𝐼)) → 𝑥 ∈ ∪ 𝐽) |
53 | 23 | elcls 22224 | . . . 4 ⊢ ((𝐽 ∈ Top ∧ (ℚ ↑m 𝐼) ⊆ ∪ 𝐽 ∧ 𝑥 ∈ ∪ 𝐽) → (𝑥 ∈ ((cls‘𝐽)‘(ℚ ↑m 𝐼)) ↔ ∀𝑣 ∈ 𝐽 (𝑥 ∈ 𝑣 → (𝑣 ∩ (ℚ ↑m 𝐼)) ≠ ∅))) |
54 | 48, 49, 52, 53 | syl3anc 1370 | . . 3 ⊢ ((𝜑 ∧ 𝑥 ∈ (ℝ ↑m 𝐼)) → (𝑥 ∈ ((cls‘𝐽)‘(ℚ ↑m 𝐼)) ↔ ∀𝑣 ∈ 𝐽 (𝑥 ∈ 𝑣 → (𝑣 ∩ (ℚ ↑m 𝐼)) ≠ ∅))) |
55 | 47, 54 | mpbird 256 | . 2 ⊢ ((𝜑 ∧ 𝑥 ∈ (ℝ ↑m 𝐼)) → 𝑥 ∈ ((cls‘𝐽)‘(ℚ ↑m 𝐼))) |
56 | 27, 55 | eqelssd 3942 | 1 ⊢ (𝜑 → ((cls‘𝐽)‘(ℚ ↑m 𝐼)) = (ℝ ↑m 𝐼)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 205 ∧ wa 396 = wceq 1539 ∃wex 1782 ∈ wcel 2106 ≠ wne 2943 ∀wral 3064 ∃wrex 3065 Vcvv 3432 ∩ cin 3886 ⊆ wss 3887 ∅c0 4256 ∪ cuni 4839 ‘cfv 6433 (class class class)co 7275 ↑m cmap 8615 Fincfn 8733 ℝcr 10870 ℚcq 12688 Basecbs 16912 TopOpenctopn 17132 Topctop 22042 TopSpctps 22081 clsccl 22169 ℝ^crrx 24547 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 ax-5 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-11 2154 ax-12 2171 ax-ext 2709 ax-rep 5209 ax-sep 5223 ax-nul 5230 ax-pow 5288 ax-pr 5352 ax-un 7588 ax-inf2 9399 ax-cnex 10927 ax-resscn 10928 ax-1cn 10929 ax-icn 10930 ax-addcl 10931 ax-addrcl 10932 ax-mulcl 10933 ax-mulrcl 10934 ax-mulcom 10935 ax-addass 10936 ax-mulass 10937 ax-distr 10938 ax-i2m1 10939 ax-1ne0 10940 ax-1rid 10941 ax-rnegex 10942 ax-rrecex 10943 ax-cnre 10944 ax-pre-lttri 10945 ax-pre-lttrn 10946 ax-pre-ltadd 10947 ax-pre-mulgt0 10948 ax-pre-sup 10949 ax-addf 10950 ax-mulf 10951 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 845 df-3or 1087 df-3an 1088 df-tru 1542 df-fal 1552 df-ex 1783 df-nf 1787 df-sb 2068 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2816 df-nfc 2889 df-ne 2944 df-nel 3050 df-ral 3069 df-rex 3070 df-rmo 3071 df-reu 3072 df-rab 3073 df-v 3434 df-sbc 3717 df-csb 3833 df-dif 3890 df-un 3892 df-in 3894 df-ss 3904 df-pss 3906 df-nul 4257 df-if 4460 df-pw 4535 df-sn 4562 df-pr 4564 df-tp 4566 df-op 4568 df-uni 4840 df-int 4880 df-iun 4926 df-iin 4927 df-br 5075 df-opab 5137 df-mpt 5158 df-tr 5192 df-id 5489 df-eprel 5495 df-po 5503 df-so 5504 df-fr 5544 df-se 5545 df-we 5546 df-xp 5595 df-rel 5596 df-cnv 5597 df-co 5598 df-dm 5599 df-rn 5600 df-res 5601 df-ima 5602 df-pred 6202 df-ord 6269 df-on 6270 df-lim 6271 df-suc 6272 df-iota 6391 df-fun 6435 df-fn 6436 df-f 6437 df-f1 6438 df-fo 6439 df-f1o 6440 df-fv 6441 df-isom 6442 df-riota 7232 df-ov 7278 df-oprab 7279 df-mpo 7280 df-of 7533 df-om 7713 df-1st 7831 df-2nd 7832 df-supp 7978 df-tpos 8042 df-frecs 8097 df-wrecs 8128 df-recs 8202 df-rdg 8241 df-1o 8297 df-er 8498 df-map 8617 df-ixp 8686 df-en 8734 df-dom 8735 df-sdom 8736 df-fin 8737 df-fsupp 9129 df-sup 9201 df-inf 9202 df-oi 9269 df-card 9697 df-pnf 11011 df-mnf 11012 df-xr 11013 df-ltxr 11014 df-le 11015 df-sub 11207 df-neg 11208 df-div 11633 df-nn 11974 df-2 12036 df-3 12037 df-4 12038 df-5 12039 df-6 12040 df-7 12041 df-8 12042 df-9 12043 df-n0 12234 df-z 12320 df-dec 12438 df-uz 12583 df-q 12689 df-rp 12731 df-xneg 12848 df-xadd 12849 df-xmul 12850 df-ioo 13083 df-ico 13085 df-fz 13240 df-fzo 13383 df-seq 13722 df-exp 13783 df-hash 14045 df-cj 14810 df-re 14811 df-im 14812 df-sqrt 14946 df-abs 14947 df-clim 15197 df-sum 15398 df-struct 16848 df-sets 16865 df-slot 16883 df-ndx 16895 df-base 16913 df-ress 16942 df-plusg 16975 df-mulr 16976 df-starv 16977 df-sca 16978 df-vsca 16979 df-ip 16980 df-tset 16981 df-ple 16982 df-ds 16984 df-unif 16985 df-hom 16986 df-cco 16987 df-rest 17133 df-topn 17134 df-0g 17152 df-gsum 17153 df-topgen 17154 df-prds 17158 df-pws 17160 df-mgm 18326 df-sgrp 18375 df-mnd 18386 df-mhm 18430 df-submnd 18431 df-grp 18580 df-minusg 18581 df-sbg 18582 df-subg 18752 df-ghm 18832 df-cntz 18923 df-cmn 19388 df-abl 19389 df-mgp 19721 df-ur 19738 df-ring 19785 df-cring 19786 df-oppr 19862 df-dvdsr 19883 df-unit 19884 df-invr 19914 df-dvr 19925 df-rnghom 19959 df-drng 19993 df-field 19994 df-subrg 20022 df-abv 20077 df-staf 20105 df-srng 20106 df-lmod 20125 df-lss 20194 df-lmhm 20284 df-lvec 20365 df-sra 20434 df-rgmod 20435 df-psmet 20589 df-xmet 20590 df-met 20591 df-bl 20592 df-mopn 20593 df-cnfld 20598 df-refld 20810 df-phl 20831 df-dsmm 20939 df-frlm 20954 df-top 22043 df-topon 22060 df-topsp 22082 df-bases 22096 df-cld 22170 df-ntr 22171 df-cls 22172 df-xms 23473 df-ms 23474 df-nm 23738 df-ngp 23739 df-tng 23740 df-nrg 23741 df-nlm 23742 df-clm 24226 df-cph 24332 df-tcph 24333 df-rrx 24549 |
This theorem is referenced by: (None) |
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