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| Mirrors > Home > MPE Home > Th. List > cnmsubglem | Structured version Visualization version GIF version | ||
| Description: Lemma for rpmsubg 21764 and friends. (Contributed by Mario Carneiro, 21-Jun-2015.) |
| Ref | Expression |
|---|---|
| cnmgpabl.m | ⊢ 𝑀 = ((mulGrp‘ℂfld) ↾s (ℂ ∖ {0})) |
| cnmsubglem.1 | ⊢ (𝑥 ∈ 𝐴 → 𝑥 ∈ ℂ) |
| cnmsubglem.2 | ⊢ (𝑥 ∈ 𝐴 → 𝑥 ≠ 0) |
| cnmsubglem.3 | ⊢ ((𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴) → (𝑥 · 𝑦) ∈ 𝐴) |
| cnmsubglem.4 | ⊢ 1 ∈ 𝐴 |
| cnmsubglem.5 | ⊢ (𝑥 ∈ 𝐴 → (1 / 𝑥) ∈ 𝐴) |
| Ref | Expression |
|---|---|
| cnmsubglem | ⊢ 𝐴 ∈ (SubGrp‘𝑀) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | cnmsubglem.1 | . . . 4 ⊢ (𝑥 ∈ 𝐴 → 𝑥 ∈ ℂ) | |
| 2 | cnmsubglem.2 | . . . 4 ⊢ (𝑥 ∈ 𝐴 → 𝑥 ≠ 0) | |
| 3 | eldifsn 4748 | . . . 4 ⊢ (𝑥 ∈ (ℂ ∖ {0}) ↔ (𝑥 ∈ ℂ ∧ 𝑥 ≠ 0)) | |
| 4 | 1, 2, 3 | sylanbrc 595 | . . 3 ⊢ (𝑥 ∈ 𝐴 → 𝑥 ∈ (ℂ ∖ {0})) |
| 5 | 4 | ssriv 3917 | . 2 ⊢ 𝐴 ⊆ (ℂ ∖ {0}) |
| 6 | cnmsubglem.4 | . . 3 ⊢ 1 ∈ 𝐴 | |
| 7 | 6 | ne0ii 4293 | . 2 ⊢ 𝐴 ≠ ∅ |
| 8 | cnmsubglem.3 | . . . . 5 ⊢ ((𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴) → (𝑥 · 𝑦) ∈ 𝐴) | |
| 9 | 8 | ralrimiva 3158 | . . . 4 ⊢ (𝑥 ∈ 𝐴 → ∀𝑦 ∈ 𝐴 (𝑥 · 𝑦) ∈ 𝐴) |
| 10 | cnfldinv 21736 | . . . . . 6 ⊢ ((𝑥 ∈ ℂ ∧ 𝑥 ≠ 0) → ((invr‘ℂfld)‘𝑥) = (1 / 𝑥)) | |
| 11 | 1, 2, 10 | syl2anc 596 | . . . . 5 ⊢ (𝑥 ∈ 𝐴 → ((invr‘ℂfld)‘𝑥) = (1 / 𝑥)) |
| 12 | cnmsubglem.5 | . . . . 5 ⊢ (𝑥 ∈ 𝐴 → (1 / 𝑥) ∈ 𝐴) | |
| 13 | 11, 12 | eqeltrd 2864 | . . . 4 ⊢ (𝑥 ∈ 𝐴 → ((invr‘ℂfld)‘𝑥) ∈ 𝐴) |
| 14 | 9, 13 | jca 521 | . . 3 ⊢ (𝑥 ∈ 𝐴 → (∀𝑦 ∈ 𝐴 (𝑥 · 𝑦) ∈ 𝐴 ∧ ((invr‘ℂfld)‘𝑥) ∈ 𝐴)) |
| 15 | 14 | rgen 3082 | . 2 ⊢ ∀𝑥 ∈ 𝐴 (∀𝑦 ∈ 𝐴 (𝑥 · 𝑦) ∈ 𝐴 ∧ ((invr‘ℂfld)‘𝑥) ∈ 𝐴) |
| 16 | cnmgpabl.m | . . . 4 ⊢ 𝑀 = ((mulGrp‘ℂfld) ↾s (ℂ ∖ {0})) | |
| 17 | 16 | cnmgpabl 21761 | . . 3 ⊢ 𝑀 ∈ Abel |
| 18 | ablgrp 20026 | . . 3 ⊢ (𝑀 ∈ Abel → 𝑀 ∈ Grp) | |
| 19 | difss 4075 | . . . . 5 ⊢ (ℂ ∖ {0}) ⊆ ℂ | |
| 20 | eqid 2763 | . . . . . . 7 ⊢ (mulGrp‘ℂfld) = (mulGrp‘ℂfld) | |
| 21 | cnfldbas 21709 | . . . . . . 7 ⊢ ℂ = (Base‘ℂfld) | |
| 22 | 20, 21 | mgpbas 20392 | . . . . . 6 ⊢ ℂ = (Base‘(mulGrp‘ℂfld)) |
| 23 | 16, 22 | ressbas2 17442 | . . . . 5 ⊢ ((ℂ ∖ {0}) ⊆ ℂ → (ℂ ∖ {0}) = (Base‘𝑀)) |
| 24 | 19, 23 | ax-mp 5 | . . . 4 ⊢ (ℂ ∖ {0}) = (Base‘𝑀) |
| 25 | cnex 11305 | . . . . 5 ⊢ ℂ ∈ V | |
| 26 | difexg 5295 | . . . . 5 ⊢ (ℂ ∈ V → (ℂ ∖ {0}) ∈ V) | |
| 27 | cnfldmul 21713 | . . . . . . 7 ⊢ · = (.r‘ℂfld) | |
| 28 | 20, 27 | mgpplusg 20391 | . . . . . 6 ⊢ · = (+g‘(mulGrp‘ℂfld)) |
| 29 | 16, 28 | ressplusg 17488 | . . . . 5 ⊢ ((ℂ ∖ {0}) ∈ V → · = (+g‘𝑀)) |
| 30 | 25, 26, 29 | mp2b 10 | . . . 4 ⊢ · = (+g‘𝑀) |
| 31 | cnfld0 21729 | . . . . . 6 ⊢ 0 = (0g‘ℂfld) | |
| 32 | cndrng 21734 | . . . . . 6 ⊢ ℂfld ∈ DivRing | |
| 33 | 21, 31, 32 | drngui 21013 | . . . . 5 ⊢ (ℂ ∖ {0}) = (Unit‘ℂfld) |
| 34 | eqid 2763 | . . . . 5 ⊢ (invr‘ℂfld) = (invr‘ℂfld) | |
| 35 | 33, 16, 34 | invrfval 20646 | . . . 4 ⊢ (invr‘ℂfld) = (invg‘𝑀) |
| 36 | 24, 30, 35 | issubg2 19378 | . . 3 ⊢ (𝑀 ∈ Grp → (𝐴 ∈ (SubGrp‘𝑀) ↔ (𝐴 ⊆ (ℂ ∖ {0}) ∧ 𝐴 ≠ ∅ ∧ ∀𝑥 ∈ 𝐴 (∀𝑦 ∈ 𝐴 (𝑥 · 𝑦) ∈ 𝐴 ∧ ((invr‘ℂfld)‘𝑥) ∈ 𝐴)))) |
| 37 | 17, 18, 36 | mp2b 10 | . 2 ⊢ (𝐴 ∈ (SubGrp‘𝑀) ↔ (𝐴 ⊆ (ℂ ∖ {0}) ∧ 𝐴 ≠ ∅ ∧ ∀𝑥 ∈ 𝐴 (∀𝑦 ∈ 𝐴 (𝑥 · 𝑦) ∈ 𝐴 ∧ ((invr‘ℂfld)‘𝑥) ∈ 𝐴))) |
| 38 | 5, 7, 15, 37 | mpbir3an 1360 | 1 ⊢ 𝐴 ∈ (SubGrp‘𝑀) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ↔ wb 209 ∧ wa 401 ∧ w3a 1103 = wceq 1570 ∈ wcel 2147 ≠ wne 2959 ∀wral 3080 Vcvv 3454 ⊆ wss 3900 ∖ cdif 4048 ∅c0 4281 {csn 4588 ‘cfv 6555 (class class class)co 7440 ℂcc 11222 0cc0 11224 1c1 11225 · cmul 11229 / cdiv 11997 Basecbs 17413 ↾s cress 17434 +gcplusg 17454 Grpcgrp 19170 SubGrpcsubg 19356 Abelcabl 20022 mulGrpcmgp 20387 invrcinvr 20644 ℂfldccnfld 21705 |
| 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 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-10 2180 ax-11 2197 ax-12 2216 ax-ext 2735 ax-rep 5235 ax-sep 5252 ax-nul 5263 ax-pow 5331 ax-pr 5395 ax-un 7772 ax-cnex 11280 ax-resscn 11281 ax-1cn 11282 ax-icn 11283 ax-addcl 11284 ax-addrcl 11285 ax-mulcl 11286 ax-mulrcl 11287 ax-mulcom 11288 ax-addass 11289 ax-mulass 11290 ax-distr 11291 ax-i2m1 11292 ax-1ne0 11293 ax-1rid 11294 ax-rnegex 11295 ax-rrecex 11296 ax-cnre 11297 ax-pre-lttri 11298 ax-pre-lttrn 11299 ax-pre-ltadd 11300 ax-pre-mulgt0 11301 ax-addf 11303 ax-mulf 11304 |
| 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 2102 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2839 df-nfc 2913 df-ne 2960 df-nel 3066 df-ral 3081 df-rex 3091 df-rmo 3369 df-reu 3370 df-rab 3417 df-v 3456 df-sbc 3743 df-csb 3852 df-ss 3901 df-pss 4017 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-pw 4562 df-sn 4589 df-pr 4591 df-tp 4593 df-op 4839 df-uni 4871 df-iun 4956 df-br 5107 df-opab 5171 df-mpt 5190 df-tr 5216 df-id 5550 df-eprel 5555 df-po 5563 df-so 5564 df-fr 5608 df-we 5610 df-xp 5661 df-rel 5662 df-cnv 5663 df-co 5664 df-dm 5665 df-rn 5666 df-res 5667 df-ima 5668 df-pred 6319 df-ord 6380 df-on 6381 df-lim 6382 df-suc 6383 df-iota 6509 df-fun 6557 df-fn 6558 df-f 6559 df-f1 6560 df-fo 6561 df-f1o 6562 df-fv 6563 df-riota 7397 df-ov 7443 df-oprab 7444 df-mpo 7445 df-om 7899 df-1st 8022 df-2nd 8023 df-tpos 8268 df-frecs 8324 df-wrecs 8355 df-recs 8404 df-rdg 8443 df-1o 8501 df-er 8742 df-en 8999 df-dom 9000 df-sdom 9001 df-fin 9002 df-pnf 11369 df-mnf 11370 df-xr 11371 df-ltxr 11372 df-le 11373 df-sub 11567 df-neg 11568 df-div 11998 df-nn 12360 df-2 12429 df-3 12430 df-4 12431 df-5 12432 df-6 12433 df-7 12434 df-8 12435 df-9 12436 df-n0 12631 df-z 12718 df-dec 12839 df-uz 12990 df-fz 13664 df-struct 17351 df-sets 17368 df-slot 17386 df-ndx 17398 df-base 17414 df-ress 17435 df-plusg 17467 df-mulr 17468 df-starv 17469 df-tset 17473 df-ple 17474 df-ds 17476 df-unif 17477 df-0g 17638 df-mgm 18842 df-sgrp 18934 df-mnd 18950 df-grp 19173 df-minusg 19174 df-subg 19359 df-cmn 20023 df-abl 20024 df-mgp 20388 df-rng 20402 df-ur 20435 df-ring 20488 df-cring 20489 df-oppr 20594 df-dvdsr 20614 df-unit 20615 df-invr 20645 df-dvr 20658 df-drng 21009 df-cnfld 21706 |
| This theorem is used by: rpmsubg 21764 cnmsgnsubg 21910 |
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