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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 2761 | . . 3 ⊢ (Base‘𝑅) = (Base‘𝑅) | |
| 2 | eqid 2761 | . . 3 ⊢ (.r‘𝑅) = (.r‘𝑅) | |
| 3 | dvrcn.u | . . 3 ⊢ 𝑈 = (Unit‘𝑅) | |
| 4 | eqid 2761 | . . 3 ⊢ (invr‘𝑅) = (invr‘𝑅) | |
| 5 | dvrcn.d | . . 3 ⊢ / = (/r‘𝑅) | |
| 6 | 1, 2, 3, 4, 5 | dvrfval 20430 | . 2 ⊢ / = (𝑥 ∈ (Base‘𝑅), 𝑦 ∈ 𝑈 ↦ (𝑥(.r‘𝑅)((invr‘𝑅)‘𝑦))) |
| 7 | dvrcn.j | . . 3 ⊢ 𝐽 = (TopOpen‘𝑅) | |
| 8 | tdrgtrg 24213 | . . 3 ⊢ (𝑅 ∈ TopDRing → 𝑅 ∈ TopRing) | |
| 9 | tdrgtps 24217 | . . . 4 ⊢ (𝑅 ∈ TopDRing → 𝑅 ∈ TopSp) | |
| 10 | 1, 7 | istps 22974 | . . . 4 ⊢ (𝑅 ∈ TopSp ↔ 𝐽 ∈ (TopOn‘(Base‘𝑅))) |
| 11 | 9, 10 | sylib 220 | . . 3 ⊢ (𝑅 ∈ TopDRing → 𝐽 ∈ (TopOn‘(Base‘𝑅))) |
| 12 | 1, 3 | unitss 20404 | . . . 4 ⊢ 𝑈 ⊆ (Base‘𝑅) |
| 13 | resttopon 23201 | . . . 4 ⊢ ((𝐽 ∈ (TopOn‘(Base‘𝑅)) ∧ 𝑈 ⊆ (Base‘𝑅)) → (𝐽 ↾t 𝑈) ∈ (TopOn‘𝑈)) | |
| 14 | 11, 12, 13 | sylancl 595 | . . 3 ⊢ (𝑅 ∈ TopDRing → (𝐽 ↾t 𝑈) ∈ (TopOn‘𝑈)) |
| 15 | 11, 14 | cnmpt1st 23708 | . . 3 ⊢ (𝑅 ∈ TopDRing → (𝑥 ∈ (Base‘𝑅), 𝑦 ∈ 𝑈 ↦ 𝑥) ∈ ((𝐽 ×t (𝐽 ↾t 𝑈)) Cn 𝐽)) |
| 16 | 11, 14 | cnmpt2nd 23709 | . . . 4 ⊢ (𝑅 ∈ TopDRing → (𝑥 ∈ (Base‘𝑅), 𝑦 ∈ 𝑈 ↦ 𝑦) ∈ ((𝐽 ×t (𝐽 ↾t 𝑈)) Cn (𝐽 ↾t 𝑈))) |
| 17 | 7, 4, 3 | invrcn 24221 | . . . 4 ⊢ (𝑅 ∈ TopDRing → (invr‘𝑅) ∈ ((𝐽 ↾t 𝑈) Cn 𝐽)) |
| 18 | 11, 14, 16, 17 | cnmpt21f 23712 | . . 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 24223 | . 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 2865 | 1 ⊢ (𝑅 ∈ TopDRing → / ∈ ((𝐽 ×t (𝐽 ↾t 𝑈)) Cn 𝐽)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1559 ∈ wcel 2141 ⊆ wss 3904 ‘cfv 6517 (class class class)co 7392 ∈ cmpo 7394 Basecbs 17228 .rcmulr 17270 ↾t crest 17432 TopOpenctopn 17433 Unitcui 20383 invrcinvr 20415 /rcdvr 20428 TopOnctopon 22950 TopSpctps 22972 Cn ccn 23264 ×t ctx 23600 TopDRingctdrg 24197 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1814 ax-4 1828 ax-5 1929 ax-6 1986 ax-7 2027 ax-8 2143 ax-9 2151 ax-10 2174 ax-11 2190 ax-12 2211 ax-ext 2733 ax-rep 5226 ax-sep 5245 ax-nul 5255 ax-pow 5321 ax-pr 5389 ax-un 7714 ax-cnex 11126 ax-resscn 11127 ax-1cn 11128 ax-icn 11129 ax-addcl 11130 ax-addrcl 11131 ax-mulcl 11132 ax-mulrcl 11133 ax-mulcom 11134 ax-addass 11135 ax-mulass 11136 ax-distr 11137 ax-i2m1 11138 ax-1ne0 11139 ax-1rid 11140 ax-rnegex 11141 ax-rrecex 11142 ax-cnre 11143 ax-pre-lttri 11144 ax-pre-lttrn 11145 ax-pre-ltadd 11146 ax-pre-mulgt0 11147 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3or 1098 df-3an 1099 df-tru 1562 df-fal 1572 df-ex 1799 df-nf 1803 df-sb 2090 df-mo 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ne 2957 df-nel 3061 df-ral 3076 df-rex 3086 df-reu 3367 df-rab 3414 df-v 3455 df-sbc 3745 df-csb 3853 df-dif 3907 df-un 3909 df-in 3911 df-ss 3921 df-pss 3924 df-nul 4286 df-if 4480 df-pw 4556 df-sn 4582 df-pr 4584 df-op 4588 df-uni 4865 df-int 4905 df-iun 4950 df-br 5100 df-opab 5162 df-mpt 5181 df-tr 5207 df-id 5540 df-eprel 5545 df-po 5553 df-so 5554 df-fr 5598 df-we 5600 df-xp 5651 df-rel 5652 df-cnv 5653 df-co 5654 df-dm 5655 df-rn 5656 df-res 5657 df-ima 5658 df-pred 6284 df-ord 6345 df-on 6346 df-lim 6347 df-suc 6348 df-iota 6473 df-fun 6519 df-fn 6520 df-f 6521 df-f1 6522 df-fo 6523 df-f1o 6524 df-fv 6525 df-riota 7349 df-ov 7395 df-oprab 7396 df-mpo 7397 df-om 7843 df-1st 7966 df-2nd 7967 df-frecs 8257 df-wrecs 8288 df-recs 8337 df-rdg 8376 df-er 8673 df-map 8805 df-en 8924 df-dom 8925 df-sdom 8926 df-fin 8927 df-fi 9354 df-pnf 11215 df-mnf 11216 df-xr 11217 df-ltxr 11218 df-le 11219 df-sub 11413 df-neg 11414 df-nn 12208 df-2 12277 df-3 12278 df-4 12279 df-5 12280 df-6 12281 df-7 12282 df-8 12283 df-9 12284 df-sets 17183 df-slot 17201 df-ndx 17213 df-base 17229 df-ress 17250 df-plusg 17282 df-tset 17288 df-rest 17434 df-topn 17435 df-topgen 17455 df-plusf 18656 df-minusg 18962 df-mgp 20170 df-dvdsr 20385 df-unit 20386 df-invr 20416 df-dvr 20429 df-top 22934 df-topon 22951 df-topsp 22973 df-bases 22986 df-cn 23267 df-tx 23602 df-tmd 24112 df-tgp 24113 df-trg 24200 df-tdrg 24201 |
| This theorem is referenced by: (None) |
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