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| Mirrors > Home > ILE Home > Th. List > cnsubglem | GIF version | ||
| Description: Lemma for cnsubrglem 14889 and friends. (Contributed by Mario Carneiro, 4-Dec-2014.) |
| Ref | Expression |
|---|---|
| cnsubglem.1 | ⊢ (𝑥 ∈ 𝐴 → 𝑥 ∈ ℂ) |
| cnsubglem.2 | ⊢ ((𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴) → (𝑥 + 𝑦) ∈ 𝐴) |
| cnsubglem.3 | ⊢ (𝑥 ∈ 𝐴 → -𝑥 ∈ 𝐴) |
| cnsubglem.4 | ⊢ 𝐵 ∈ 𝐴 |
| Ref | Expression |
|---|---|
| cnsubglem | ⊢ 𝐴 ∈ (SubGrp‘ℂfld) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | cnsubglem.1 | . . 3 ⊢ (𝑥 ∈ 𝐴 → 𝑥 ∈ ℂ) | |
| 2 | 1 | ssriv 3252 | . 2 ⊢ 𝐴 ⊆ ℂ |
| 3 | cnsubglem.4 | . . 3 ⊢ 𝐵 ∈ 𝐴 | |
| 4 | elex2 2838 | . . 3 ⊢ (𝐵 ∈ 𝐴 → ∃𝑤 𝑤 ∈ 𝐴) | |
| 5 | 3, 4 | ax-mp 5 | . 2 ⊢ ∃𝑤 𝑤 ∈ 𝐴 |
| 6 | cnsubglem.2 | . . . . 5 ⊢ ((𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴) → (𝑥 + 𝑦) ∈ 𝐴) | |
| 7 | 6 | ralrimiva 2623 | . . . 4 ⊢ (𝑥 ∈ 𝐴 → ∀𝑦 ∈ 𝐴 (𝑥 + 𝑦) ∈ 𝐴) |
| 8 | cnfldneg 14882 | . . . . . 6 ⊢ (𝑥 ∈ ℂ → ((invg‘ℂfld)‘𝑥) = -𝑥) | |
| 9 | 1, 8 | syl 14 | . . . . 5 ⊢ (𝑥 ∈ 𝐴 → ((invg‘ℂfld)‘𝑥) = -𝑥) |
| 10 | cnsubglem.3 | . . . . 5 ⊢ (𝑥 ∈ 𝐴 → -𝑥 ∈ 𝐴) | |
| 11 | 9, 10 | eqeltrd 2315 | . . . 4 ⊢ (𝑥 ∈ 𝐴 → ((invg‘ℂfld)‘𝑥) ∈ 𝐴) |
| 12 | 7, 11 | jca 306 | . . 3 ⊢ (𝑥 ∈ 𝐴 → (∀𝑦 ∈ 𝐴 (𝑥 + 𝑦) ∈ 𝐴 ∧ ((invg‘ℂfld)‘𝑥) ∈ 𝐴)) |
| 13 | 12 | rgen 2603 | . 2 ⊢ ∀𝑥 ∈ 𝐴 (∀𝑦 ∈ 𝐴 (𝑥 + 𝑦) ∈ 𝐴 ∧ ((invg‘ℂfld)‘𝑥) ∈ 𝐴) |
| 14 | cnring 14879 | . . 3 ⊢ ℂfld ∈ Ring | |
| 15 | ringgrp 14279 | . . 3 ⊢ (ℂfld ∈ Ring → ℂfld ∈ Grp) | |
| 16 | cnfldbas 14869 | . . . 4 ⊢ ℂ = (Base‘ℂfld) | |
| 17 | cnfldadd 14871 | . . . 4 ⊢ + = (+g‘ℂfld) | |
| 18 | eqid 2238 | . . . 4 ⊢ (invg‘ℂfld) = (invg‘ℂfld) | |
| 19 | 16, 17, 18 | issubg2m 13969 | . . 3 ⊢ (ℂfld ∈ Grp → (𝐴 ∈ (SubGrp‘ℂfld) ↔ (𝐴 ⊆ ℂ ∧ ∃𝑤 𝑤 ∈ 𝐴 ∧ ∀𝑥 ∈ 𝐴 (∀𝑦 ∈ 𝐴 (𝑥 + 𝑦) ∈ 𝐴 ∧ ((invg‘ℂfld)‘𝑥) ∈ 𝐴)))) |
| 20 | 14, 15, 19 | mp2b 8 | . 2 ⊢ (𝐴 ∈ (SubGrp‘ℂfld) ↔ (𝐴 ⊆ ℂ ∧ ∃𝑤 𝑤 ∈ 𝐴 ∧ ∀𝑥 ∈ 𝐴 (∀𝑦 ∈ 𝐴 (𝑥 + 𝑦) ∈ 𝐴 ∧ ((invg‘ℂfld)‘𝑥) ∈ 𝐴))) |
| 21 | 2, 5, 13, 20 | mpbir3an 1210 | 1 ⊢ 𝐴 ∈ (SubGrp‘ℂfld) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∧ wa 104 ↔ wb 105 ∧ w3a 1009 = wceq 1402 ∃wex 1545 ∈ wcel 2209 ∀wral 2528 ⊆ wss 3220 ‘cfv 5372 (class class class)co 6075 ℂcc 8167 + caddc 8172 -cneg 8488 Grpcgrp 13782 invgcminusg 13783 SubGrpcsubg 13947 Ringcrg 14274 ℂfldccnfld 14865 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 623 ax-in2 624 ax-io 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-14 2212 ax-ext 2220 ax-coll 4241 ax-sep 4244 ax-pow 4306 ax-pr 4341 ax-un 4573 ax-setind 4679 ax-cnex 8260 ax-resscn 8261 ax-1cn 8262 ax-1re 8263 ax-icn 8264 ax-addcl 8265 ax-addrcl 8266 ax-mulcl 8267 ax-mulrcl 8268 ax-addcom 8269 ax-mulcom 8270 ax-addass 8271 ax-mulass 8272 ax-distr 8273 ax-i2m1 8274 ax-0lt1 8275 ax-1rid 8276 ax-0id 8277 ax-rnegex 8278 ax-precex 8279 ax-cnre 8280 ax-pre-ltirr 8281 ax-pre-ltwlin 8282 ax-pre-lttrn 8283 ax-pre-apti 8284 ax-pre-ltadd 8285 ax-pre-mulgt0 8286 ax-addf 8291 ax-mulf 8292 |
| This theorem depends on definitions: df-bi 117 df-3or 1010 df-3an 1011 df-tru 1405 df-fal 1408 df-nf 1514 df-sb 1816 df-eu 2089 df-mo 2090 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-ne 2421 df-nel 2516 df-ral 2533 df-rex 2534 df-reu 2535 df-rmo 2536 df-rab 2537 df-v 2823 df-sbc 3052 df-csb 3148 df-dif 3222 df-un 3224 df-in 3226 df-ss 3233 df-nul 3521 df-pw 3687 df-sn 3711 df-pr 3712 df-tp 3713 df-op 3714 df-uni 3931 df-int 3966 df-iun 4009 df-br 4126 df-opab 4188 df-mpt 4189 df-id 4433 df-xp 4775 df-rel 4776 df-cnv 4777 df-co 4778 df-dm 4779 df-rn 4780 df-res 4781 df-ima 4782 df-iota 5332 df-fun 5374 df-fn 5375 df-f 5376 df-f1 5377 df-fo 5378 df-f1o 5379 df-fv 5380 df-riota 6028 df-ov 6078 df-oprab 6079 df-mpo 6080 df-1st 6364 df-2nd 6365 df-pnf 8352 df-mnf 8353 df-xr 8354 df-ltxr 8355 df-le 8356 df-sub 8489 df-neg 8490 df-reap 8893 df-inn 9284 df-2 9342 df-3 9343 df-4 9344 df-5 9345 df-6 9346 df-7 9347 df-8 9348 df-9 9349 df-n0 9543 df-z 9624 df-dec 9757 df-uz 9901 df-rp 10034 df-fz 10391 df-cj 11585 df-abs 11743 df-struct 13332 df-ndx 13333 df-slot 13334 df-base 13336 df-sets 13337 df-iress 13338 df-plusg 13421 df-mulr 13422 df-starv 13423 df-tset 13427 df-ple 13428 df-ds 13430 df-unif 13431 df-0g 13589 df-topgen 13591 df-mgm 13653 df-sgrp 13694 df-mnd 13707 df-grp 13785 df-minusg 13786 df-subg 13950 df-cmn 14066 df-mgp 14195 df-ring 14276 df-cring 14277 df-bl 14855 df-mopn 14856 df-fg 14858 df-metu 14859 df-cnfld 14866 |
| This theorem is referenced by: cnsubrglem 14889 zringmulg 14905 |
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