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Mirrors > Home > ILE Home > Th. List > cnsubglem | GIF version |
Description: Lemma for cnsubrglem 13614 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 3161 | . 2 ⊢ 𝐴 ⊆ ℂ |
3 | cnsubglem.4 | . . 3 ⊢ 𝐵 ∈ 𝐴 | |
4 | elex2 2755 | . . 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 2550 | . . . 4 ⊢ (𝑥 ∈ 𝐴 → ∀𝑦 ∈ 𝐴 (𝑥 + 𝑦) ∈ 𝐴) |
8 | cnfldneg 13607 | . . . . . 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 2254 | . . . 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 2530 | . 2 ⊢ ∀𝑥 ∈ 𝐴 (∀𝑦 ∈ 𝐴 (𝑥 + 𝑦) ∈ 𝐴 ∧ ((invg‘ℂfld)‘𝑥) ∈ 𝐴) |
14 | cnring 13604 | . . 3 ⊢ ℂfld ∈ Ring | |
15 | ringgrp 13190 | . . 3 ⊢ (ℂfld ∈ Ring → ℂfld ∈ Grp) | |
16 | cnfldbas 13599 | . . . 4 ⊢ ℂ = (Base‘ℂfld) | |
17 | cnfldadd 13600 | . . . 4 ⊢ + = (+g‘ℂfld) | |
18 | eqid 2177 | . . . 4 ⊢ (invg‘ℂfld) = (invg‘ℂfld) | |
19 | 16, 17, 18 | issubg2m 13055 | . . 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 1179 | 1 ⊢ 𝐴 ∈ (SubGrp‘ℂfld) |
Colors of variables: wff set class |
Syntax hints: → wi 4 ∧ wa 104 ↔ wb 105 ∧ w3a 978 = wceq 1353 ∃wex 1492 ∈ wcel 2148 ∀wral 2455 ⊆ wss 3131 ‘cfv 5218 (class class class)co 5878 ℂcc 7812 + caddc 7817 -cneg 8132 Grpcgrp 12883 invgcminusg 12884 SubGrpcsubg 13033 Ringcrg 13185 ℂfldccnfld 13595 |
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 614 ax-in2 615 ax-io 709 ax-5 1447 ax-7 1448 ax-gen 1449 ax-ie1 1493 ax-ie2 1494 ax-8 1504 ax-10 1505 ax-11 1506 ax-i12 1507 ax-bndl 1509 ax-4 1510 ax-17 1526 ax-i9 1530 ax-ial 1534 ax-i5r 1535 ax-13 2150 ax-14 2151 ax-ext 2159 ax-coll 4120 ax-sep 4123 ax-pow 4176 ax-pr 4211 ax-un 4435 ax-setind 4538 ax-cnex 7905 ax-resscn 7906 ax-1cn 7907 ax-1re 7908 ax-icn 7909 ax-addcl 7910 ax-addrcl 7911 ax-mulcl 7912 ax-mulrcl 7913 ax-addcom 7914 ax-mulcom 7915 ax-addass 7916 ax-mulass 7917 ax-distr 7918 ax-i2m1 7919 ax-0lt1 7920 ax-1rid 7921 ax-0id 7922 ax-rnegex 7923 ax-precex 7924 ax-cnre 7925 ax-pre-ltirr 7926 ax-pre-ltwlin 7927 ax-pre-lttrn 7928 ax-pre-apti 7929 ax-pre-ltadd 7930 ax-pre-mulgt0 7931 ax-addf 7936 ax-mulf 7937 |
This theorem depends on definitions: df-bi 117 df-3or 979 df-3an 980 df-tru 1356 df-fal 1359 df-nf 1461 df-sb 1763 df-eu 2029 df-mo 2030 df-clab 2164 df-cleq 2170 df-clel 2173 df-nfc 2308 df-ne 2348 df-nel 2443 df-ral 2460 df-rex 2461 df-reu 2462 df-rmo 2463 df-rab 2464 df-v 2741 df-sbc 2965 df-csb 3060 df-dif 3133 df-un 3135 df-in 3137 df-ss 3144 df-nul 3425 df-pw 3579 df-sn 3600 df-pr 3601 df-tp 3602 df-op 3603 df-uni 3812 df-int 3847 df-iun 3890 df-br 4006 df-opab 4067 df-mpt 4068 df-id 4295 df-xp 4634 df-rel 4635 df-cnv 4636 df-co 4637 df-dm 4638 df-rn 4639 df-res 4640 df-ima 4641 df-iota 5180 df-fun 5220 df-fn 5221 df-f 5222 df-f1 5223 df-fo 5224 df-f1o 5225 df-fv 5226 df-riota 5834 df-ov 5881 df-oprab 5882 df-mpo 5883 df-pnf 7997 df-mnf 7998 df-xr 7999 df-ltxr 8000 df-le 8001 df-sub 8133 df-neg 8134 df-reap 8535 df-inn 8923 df-2 8981 df-3 8982 df-4 8983 df-5 8984 df-6 8985 df-7 8986 df-8 8987 df-9 8988 df-n0 9180 df-z 9257 df-dec 9388 df-uz 9532 df-fz 10012 df-cj 10854 df-struct 12467 df-ndx 12468 df-slot 12469 df-base 12471 df-sets 12472 df-iress 12473 df-plusg 12552 df-mulr 12553 df-starv 12554 df-0g 12713 df-mgm 12781 df-sgrp 12814 df-mnd 12824 df-grp 12886 df-minusg 12887 df-subg 13036 df-cmn 13096 df-mgp 13137 df-ring 13187 df-cring 13188 df-icnfld 13596 |
This theorem is referenced by: cnsubrglem 13614 zringmulg 13628 |
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