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| Mirrors > Home > MPE Home > Th. List > invrcn | Structured version Visualization version GIF version | ||
| Description: The multiplicative inverse function is a continuous function from the unit group (that is, the nonzero numbers) to the field. (Contributed by Mario Carneiro, 5-Oct-2015.) |
| Ref | Expression |
|---|---|
| mulrcn.j | ⊢ 𝐽 = (TopOpen‘𝑅) |
| invrcn.i | ⊢ 𝐼 = (invr‘𝑅) |
| invrcn.u | ⊢ 𝑈 = (Unit‘𝑅) |
| Ref | Expression |
|---|---|
| invrcn | ⊢ (𝑅 ∈ TopDRing → 𝐼 ∈ ((𝐽 ↾t 𝑈) Cn 𝐽)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | tdrgtps 24315 | . . 3 ⊢ (𝑅 ∈ TopDRing → 𝑅 ∈ TopSp) | |
| 2 | mulrcn.j | . . . 4 ⊢ 𝐽 = (TopOpen‘𝑅) | |
| 3 | 2 | tpstop 23075 | . . 3 ⊢ (𝑅 ∈ TopSp → 𝐽 ∈ Top) |
| 4 | cnrest2r 23425 | . . 3 ⊢ (𝐽 ∈ Top → ((𝐽 ↾t 𝑈) Cn (𝐽 ↾t 𝑈)) ⊆ ((𝐽 ↾t 𝑈) Cn 𝐽)) | |
| 5 | 1, 3, 4 | 3syl 19 | . 2 ⊢ (𝑅 ∈ TopDRing → ((𝐽 ↾t 𝑈) Cn (𝐽 ↾t 𝑈)) ⊆ ((𝐽 ↾t 𝑈) Cn 𝐽)) |
| 6 | invrcn.i | . . 3 ⊢ 𝐼 = (invr‘𝑅) | |
| 7 | invrcn.u | . . 3 ⊢ 𝑈 = (Unit‘𝑅) | |
| 8 | 2, 6, 7 | invrcn2 24318 | . 2 ⊢ (𝑅 ∈ TopDRing → 𝐼 ∈ ((𝐽 ↾t 𝑈) Cn (𝐽 ↾t 𝑈))) |
| 9 | 5, 8 | sseldd 3939 | 1 ⊢ (𝑅 ∈ TopDRing → 𝐼 ∈ ((𝐽 ↾t 𝑈) Cn 𝐽)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1570 ∈ wcel 2143 ⊆ wss 3906 ‘cfv 6538 (class class class)co 7412 ↾t crest 17474 TopOpenctopn 17475 Unitcui 20438 invrcinvr 20470 Topctop 23031 TopSpctps 23070 Cn ccn 23362 TopDRingctdrg 24295 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1825 ax-4 1839 ax-5 1940 ax-6 1997 ax-7 2038 ax-8 2145 ax-9 2153 ax-10 2176 ax-11 2192 ax-12 2213 ax-ext 2735 ax-rep 5239 ax-sep 5258 ax-nul 5270 ax-pow 5338 ax-pr 5406 ax-un 7734 ax-cnex 11157 ax-resscn 11158 ax-1cn 11159 ax-icn 11160 ax-addcl 11161 ax-addrcl 11162 ax-mulcl 11163 ax-mulrcl 11164 ax-mulcom 11165 ax-addass 11166 ax-mulass 11167 ax-distr 11168 ax-i2m1 11169 ax-1ne0 11170 ax-1rid 11171 ax-rnegex 11172 ax-rrecex 11173 ax-cnre 11174 ax-pre-lttri 11175 ax-pre-lttrn 11176 ax-pre-ltadd 11177 ax-pre-mulgt0 11178 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1810 df-nf 1814 df-sb 2097 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2838 df-nfc 2912 df-ne 2959 df-nel 3065 df-ral 3080 df-rex 3090 df-reu 3370 df-rab 3417 df-v 3457 df-sbc 3746 df-csb 3855 df-dif 3909 df-un 3911 df-in 3913 df-ss 3923 df-pss 3926 df-nul 4288 df-if 4489 df-pw 4565 df-sn 4591 df-pr 4593 df-op 4597 df-uni 4874 df-int 4914 df-iun 4959 df-br 5111 df-opab 5175 df-mpt 5194 df-tr 5220 df-id 5558 df-eprel 5563 df-po 5571 df-so 5572 df-fr 5616 df-we 5618 df-xp 5669 df-rel 5670 df-cnv 5671 df-co 5672 df-dm 5673 df-rn 5674 df-res 5675 df-ima 5676 df-pred 6304 df-ord 6365 df-on 6366 df-lim 6367 df-suc 6368 df-iota 6494 df-fun 6540 df-fn 6541 df-f 6542 df-f1 6543 df-fo 6544 df-f1o 6545 df-fv 6546 df-riota 7369 df-ov 7415 df-oprab 7416 df-mpo 7417 df-om 7864 df-1st 7987 df-2nd 7988 df-frecs 8279 df-wrecs 8310 df-recs 8359 df-rdg 8398 df-er 8695 df-map 8827 df-en 8945 df-dom 8946 df-sdom 8947 df-fin 8948 df-fi 9372 df-pnf 11246 df-mnf 11247 df-xr 11248 df-ltxr 11249 df-le 11250 df-sub 11444 df-neg 11445 df-nn 12235 df-2 12304 df-3 12305 df-4 12306 df-5 12307 df-6 12308 df-7 12309 df-8 12310 df-9 12311 df-sets 17225 df-slot 17243 df-ndx 17255 df-base 17271 df-ress 17292 df-plusg 17324 df-tset 17330 df-rest 17476 df-topn 17477 df-topgen 17497 df-minusg 19005 df-mgp 20218 df-invr 20471 df-top 23032 df-topon 23049 df-topsp 23071 df-bases 23084 df-cn 23365 df-tmd 24210 df-tgp 24211 df-trg 24298 df-tdrg 24299 |
| This theorem is referenced by: dvrcn 24322 |
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