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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 20612 | . 2 ⊢ / = (𝑥 ∈ (Base‘𝑅), 𝑦 ∈ 𝑈 ↦ (𝑥(.r‘𝑅)((invr‘𝑅)‘𝑦))) |
| 7 | dvrcn.j | . . 3 ⊢ 𝐽 = (TopOpen‘𝑅) | |
| 8 | tdrgtrg 24472 | . . 3 ⊢ (𝑅 ∈ TopDRing → 𝑅 ∈ TopRing) | |
| 9 | tdrgtps 24476 | . . . 4 ⊢ (𝑅 ∈ TopDRing → 𝑅 ∈ TopSp) | |
| 10 | 1, 7 | istps 23232 | . . . 4 ⊢ (𝑅 ∈ TopSp ↔ 𝐽 ∈ (TopOn‘(Base‘𝑅))) |
| 11 | 9, 10 | sylib 221 | . . 3 ⊢ (𝑅 ∈ TopDRing → 𝐽 ∈ (TopOn‘(Base‘𝑅))) |
| 12 | 1, 3 | unitss 20586 | . . . 4 ⊢ 𝑈 ⊆ (Base‘𝑅) |
| 13 | resttopon 23459 | . . . 4 ⊢ ((𝐽 ∈ (TopOn‘(Base‘𝑅)) ∧ 𝑈 ⊆ (Base‘𝑅)) → (𝐽 ↾t 𝑈) ∈ (TopOn‘𝑈)) | |
| 14 | 11, 12, 13 | sylancl 598 | . . 3 ⊢ (𝑅 ∈ TopDRing → (𝐽 ↾t 𝑈) ∈ (TopOn‘𝑈)) |
| 15 | 11, 14 | cnmpt1st 23967 | . . 3 ⊢ (𝑅 ∈ TopDRing → (𝑥 ∈ (Base‘𝑅), 𝑦 ∈ 𝑈 ↦ 𝑥) ∈ ((𝐽 ×t (𝐽 ↾t 𝑈)) Cn 𝐽)) |
| 16 | 11, 14 | cnmpt2nd 23968 | . . . 4 ⊢ (𝑅 ∈ TopDRing → (𝑥 ∈ (Base‘𝑅), 𝑦 ∈ 𝑈 ↦ 𝑦) ∈ ((𝐽 ×t (𝐽 ↾t 𝑈)) Cn (𝐽 ↾t 𝑈))) |
| 17 | 7, 4, 3 | invrcn 24480 | . . . 4 ⊢ (𝑅 ∈ TopDRing → (invr‘𝑅) ∈ ((𝐽 ↾t 𝑈) Cn 𝐽)) |
| 18 | 11, 14, 16, 17 | cnmpt21f 23971 | . . 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 24482 | . 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 |
| This proof depends on syntax axioms: → wi 4 = wceq 1570 ∈ wcel 2145 ⊆ wss 3899 ‘cfv 6531 (class class class)co 7412 ∈ cmpo 7414 Basecbs 17367 .rcmulr 17409 ↾t crest 17571 TopOpenctopn 17572 Unitcui 20565 invrcinvr 20597 /rcdvr 20610 TopOnctopon 23208 TopSpctps 23230 Cn ccn 23522 ×t ctx 23859 TopDRingctdrg 24456 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2213 ax-ext 2733 ax-rep 5232 ax-sep 5249 ax-nul 5260 ax-pow 5327 ax-pr 5391 ax-un 7740 ax-cnex 11237 ax-resscn 11238 ax-1cn 11239 ax-icn 11240 ax-addcl 11241 ax-addrcl 11242 ax-mulcl 11243 ax-mulrcl 11244 ax-mulcom 11245 ax-addass 11246 ax-mulass 11247 ax-distr 11248 ax-i2m1 11249 ax-1ne0 11250 ax-1rid 11251 ax-rnegex 11252 ax-rrecex 11253 ax-cnre 11254 ax-pre-lttri 11255 ax-pre-lttrn 11256 ax-pre-ltadd 11257 ax-pre-mulgt0 11258 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ne 2957 df-nel 3063 df-ral 3078 df-rex 3088 df-reu 3367 df-rab 3414 df-v 3453 df-sbc 3740 df-csb 3848 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-pss 3919 df-nul 4280 df-if 4483 df-pw 4559 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4868 df-int 4908 df-iun 4953 df-br 5104 df-opab 5168 df-mpt 5187 df-tr 5213 df-id 5546 df-eprel 5551 df-po 5559 df-so 5560 df-fr 5604 df-we 5606 df-xp 5657 df-rel 5658 df-cnv 5659 df-co 5660 df-dm 5661 df-rn 5662 df-res 5663 df-ima 5664 df-pred 6297 df-ord 6358 df-on 6359 df-lim 6360 df-suc 6361 df-iota 6487 df-fun 6533 df-fn 6534 df-f 6535 df-f1 6536 df-fo 6537 df-f1o 6538 df-fv 6539 df-riota 7369 df-ov 7415 df-oprab 7416 df-mpo 7417 df-om 7867 df-1st 7990 df-2nd 7991 df-frecs 8283 df-wrecs 8314 df-recs 8363 df-rdg 8402 df-er 8701 df-map 8833 df-en 8958 df-dom 8959 df-sdom 8960 df-fin 8961 df-fi 9387 df-pnf 11326 df-mnf 11327 df-xr 11328 df-ltxr 11329 df-le 11330 df-sub 11524 df-neg 11525 df-nn 12317 df-2 12386 df-3 12387 df-4 12388 df-5 12389 df-6 12390 df-7 12391 df-8 12392 df-9 12393 df-sets 17322 df-slot 17340 df-ndx 17352 df-base 17368 df-ress 17389 df-plusg 17421 df-tset 17427 df-rest 17573 df-topn 17574 df-topgen 17594 df-plusf 18795 df-minusg 19128 df-mgp 20341 df-dvdsr 20567 df-unit 20568 df-invr 20598 df-dvr 20611 df-top 23192 df-topon 23209 df-topsp 23231 df-bases 23244 df-cn 23525 df-tx 23861 df-tmd 24371 df-tgp 24372 df-trg 24459 df-tdrg 24460 |
| This theorem is used by: (None) |
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