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| Mirrors > Home > MPE Home > Th. List > dvrcn | Structured version Visualization version GIF version | ||
| Description: The division function is continuous in a topological field. (Contributed by Mario Carneiro, 5-Oct-2015.) |
| Ref | Expression |
|---|---|
| dvrcn.j | ⊢ 𝐽 = (TopOpen‘𝑅) |
| dvrcn.d | ⊢ / = (/r‘𝑅) |
| dvrcn.u | ⊢ 𝑈 = (Unit‘𝑅) |
| Ref | Expression |
|---|---|
| dvrcn | ⊢ (𝑅 ∈ TopDRing → / ∈ ((𝐽 ×t (𝐽 ↾t 𝑈)) Cn 𝐽)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eqid 2737 | . . 3 ⊢ (Base‘𝑅) = (Base‘𝑅) | |
| 2 | eqid 2737 | . . 3 ⊢ (.r‘𝑅) = (.r‘𝑅) | |
| 3 | dvrcn.u | . . 3 ⊢ 𝑈 = (Unit‘𝑅) | |
| 4 | eqid 2737 | . . 3 ⊢ (invr‘𝑅) = (invr‘𝑅) | |
| 5 | dvrcn.d | . . 3 ⊢ / = (/r‘𝑅) | |
| 6 | 1, 2, 3, 4, 5 | dvrfval 20350 | . 2 ⊢ / = (𝑥 ∈ (Base‘𝑅), 𝑦 ∈ 𝑈 ↦ (𝑥(.r‘𝑅)((invr‘𝑅)‘𝑦))) |
| 7 | dvrcn.j | . . 3 ⊢ 𝐽 = (TopOpen‘𝑅) | |
| 8 | tdrgtrg 24129 | . . 3 ⊢ (𝑅 ∈ TopDRing → 𝑅 ∈ TopRing) | |
| 9 | tdrgtps 24133 | . . . 4 ⊢ (𝑅 ∈ TopDRing → 𝑅 ∈ TopSp) | |
| 10 | 1, 7 | istps 22890 | . . . 4 ⊢ (𝑅 ∈ TopSp ↔ 𝐽 ∈ (TopOn‘(Base‘𝑅))) |
| 11 | 9, 10 | sylib 218 | . . 3 ⊢ (𝑅 ∈ TopDRing → 𝐽 ∈ (TopOn‘(Base‘𝑅))) |
| 12 | 1, 3 | unitss 20324 | . . . 4 ⊢ 𝑈 ⊆ (Base‘𝑅) |
| 13 | resttopon 23117 | . . . 4 ⊢ ((𝐽 ∈ (TopOn‘(Base‘𝑅)) ∧ 𝑈 ⊆ (Base‘𝑅)) → (𝐽 ↾t 𝑈) ∈ (TopOn‘𝑈)) | |
| 14 | 11, 12, 13 | sylancl 587 | . . 3 ⊢ (𝑅 ∈ TopDRing → (𝐽 ↾t 𝑈) ∈ (TopOn‘𝑈)) |
| 15 | 11, 14 | cnmpt1st 23624 | . . 3 ⊢ (𝑅 ∈ TopDRing → (𝑥 ∈ (Base‘𝑅), 𝑦 ∈ 𝑈 ↦ 𝑥) ∈ ((𝐽 ×t (𝐽 ↾t 𝑈)) Cn 𝐽)) |
| 16 | 11, 14 | cnmpt2nd 23625 | . . . 4 ⊢ (𝑅 ∈ TopDRing → (𝑥 ∈ (Base‘𝑅), 𝑦 ∈ 𝑈 ↦ 𝑦) ∈ ((𝐽 ×t (𝐽 ↾t 𝑈)) Cn (𝐽 ↾t 𝑈))) |
| 17 | 7, 4, 3 | invrcn 24137 | . . . 4 ⊢ (𝑅 ∈ TopDRing → (invr‘𝑅) ∈ ((𝐽 ↾t 𝑈) Cn 𝐽)) |
| 18 | 11, 14, 16, 17 | cnmpt21f 23628 | . . 3 ⊢ (𝑅 ∈ TopDRing → (𝑥 ∈ (Base‘𝑅), 𝑦 ∈ 𝑈 ↦ ((invr‘𝑅)‘𝑦)) ∈ ((𝐽 ×t (𝐽 ↾t 𝑈)) Cn 𝐽)) |
| 19 | 7, 2, 8, 11, 14, 15, 18 | cnmpt2mulr 24139 | . 2 ⊢ (𝑅 ∈ TopDRing → (𝑥 ∈ (Base‘𝑅), 𝑦 ∈ 𝑈 ↦ (𝑥(.r‘𝑅)((invr‘𝑅)‘𝑦))) ∈ ((𝐽 ×t (𝐽 ↾t 𝑈)) Cn 𝐽)) |
| 20 | 6, 19 | eqeltrid 2841 | 1 ⊢ (𝑅 ∈ TopDRing → / ∈ ((𝐽 ×t (𝐽 ↾t 𝑈)) Cn 𝐽)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1542 ∈ wcel 2114 ⊆ wss 3903 ‘cfv 6500 (class class class)co 7368 ∈ cmpo 7370 Basecbs 17148 .rcmulr 17190 ↾t crest 17352 TopOpenctopn 17353 Unitcui 20303 invrcinvr 20335 /rcdvr 20348 TopOnctopon 22866 TopSpctps 22888 Cn ccn 23180 ×t ctx 23516 TopDRingctdrg 24113 |
| 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 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2709 ax-rep 5226 ax-sep 5243 ax-nul 5253 ax-pow 5312 ax-pr 5379 ax-un 7690 ax-cnex 11094 ax-resscn 11095 ax-1cn 11096 ax-icn 11097 ax-addcl 11098 ax-addrcl 11099 ax-mulcl 11100 ax-mulrcl 11101 ax-mulcom 11102 ax-addass 11103 ax-mulass 11104 ax-distr 11105 ax-i2m1 11106 ax-1ne0 11107 ax-1rid 11108 ax-rnegex 11109 ax-rrecex 11110 ax-cnre 11111 ax-pre-lttri 11112 ax-pre-lttrn 11113 ax-pre-ltadd 11114 ax-pre-mulgt0 11115 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-nfc 2886 df-ne 2934 df-nel 3038 df-ral 3053 df-rex 3063 df-reu 3353 df-rab 3402 df-v 3444 df-sbc 3743 df-csb 3852 df-dif 3906 df-un 3908 df-in 3910 df-ss 3920 df-pss 3923 df-nul 4288 df-if 4482 df-pw 4558 df-sn 4583 df-pr 4585 df-op 4589 df-uni 4866 df-int 4905 df-iun 4950 df-br 5101 df-opab 5163 df-mpt 5182 df-tr 5208 df-id 5527 df-eprel 5532 df-po 5540 df-so 5541 df-fr 5585 df-we 5587 df-xp 5638 df-rel 5639 df-cnv 5640 df-co 5641 df-dm 5642 df-rn 5643 df-res 5644 df-ima 5645 df-pred 6267 df-ord 6328 df-on 6329 df-lim 6330 df-suc 6331 df-iota 6456 df-fun 6502 df-fn 6503 df-f 6504 df-f1 6505 df-fo 6506 df-f1o 6507 df-fv 6508 df-riota 7325 df-ov 7371 df-oprab 7372 df-mpo 7373 df-om 7819 df-1st 7943 df-2nd 7944 df-frecs 8233 df-wrecs 8264 df-recs 8313 df-rdg 8351 df-er 8645 df-map 8777 df-en 8896 df-dom 8897 df-sdom 8898 df-fin 8899 df-fi 9326 df-pnf 11180 df-mnf 11181 df-xr 11182 df-ltxr 11183 df-le 11184 df-sub 11378 df-neg 11379 df-nn 12158 df-2 12220 df-3 12221 df-4 12222 df-5 12223 df-6 12224 df-7 12225 df-8 12226 df-9 12227 df-sets 17103 df-slot 17121 df-ndx 17133 df-base 17149 df-ress 17170 df-plusg 17202 df-tset 17208 df-rest 17354 df-topn 17355 df-topgen 17375 df-plusf 18576 df-minusg 18879 df-mgp 20088 df-dvdsr 20305 df-unit 20306 df-invr 20336 df-dvr 20349 df-top 22850 df-topon 22867 df-topsp 22889 df-bases 22902 df-cn 23183 df-tx 23518 df-tmd 24028 df-tgp 24029 df-trg 24116 df-tdrg 24117 |
| This theorem is referenced by: (None) |
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