Theorem ssnmz 13284

Description: A subgroup is a subset of its normalizer. (Contributed by Mario Carneiro, 18-Jan-2015.)

Hypotheses

Ref	Expression
elnmz.1	⊢ 𝑁 = {𝑥 ∈ 𝑋 ∣ ∀𝑦 ∈ 𝑋 ((𝑥 + 𝑦) ∈ 𝑆 ↔ (𝑦 + 𝑥) ∈ 𝑆)}
nmzsubg.2	⊢ 𝑋 = (Base‘𝐺)
nmzsubg.3	⊢ + = (+g‘𝐺)

Assertion

Ref	Expression
ssnmz	⊢ (𝑆 ∈ (SubGrp‘𝐺) → 𝑆 ⊆ 𝑁)

Distinct variable groups:   𝑥,𝑦,𝐺   𝑥,𝑆,𝑦   𝑥, + ,𝑦   𝑥,𝑋,𝑦

Allowed substitution hints:   𝑁(𝑥,𝑦)

Proof of Theorem ssnmz

Dummy variables 𝑧 𝑤 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		nmzsubg.2	. . . . . 6 ⊢ 𝑋 = (Base‘𝐺)
2	1	subgss 13247	. . . . 5 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → 𝑆 ⊆ 𝑋)
3	2	sselda 3180	. . . 4 ⊢ ((𝑆 ∈ (SubGrp‘𝐺) ∧ 𝑧 ∈ 𝑆) → 𝑧 ∈ 𝑋)
4		simpll 527	. . . . . . . 8 ⊢ (((𝑆 ∈ (SubGrp‘𝐺) ∧ (𝑧 ∈ 𝑆 ∧ 𝑤 ∈ 𝑋)) ∧ (𝑧 + 𝑤) ∈ 𝑆) → 𝑆 ∈ (SubGrp‘𝐺))
5		subgrcl 13252	. . . . . . . . . . . . 13 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → 𝐺 ∈ Grp)
6	4, 5	syl 14	. . . . . . . . . . . 12 ⊢ (((𝑆 ∈ (SubGrp‘𝐺) ∧ (𝑧 ∈ 𝑆 ∧ 𝑤 ∈ 𝑋)) ∧ (𝑧 + 𝑤) ∈ 𝑆) → 𝐺 ∈ Grp)
7	4, 2	syl 14	. . . . . . . . . . . . 13 ⊢ (((𝑆 ∈ (SubGrp‘𝐺) ∧ (𝑧 ∈ 𝑆 ∧ 𝑤 ∈ 𝑋)) ∧ (𝑧 + 𝑤) ∈ 𝑆) → 𝑆 ⊆ 𝑋)
8		simplrl 535	. . . . . . . . . . . . 13 ⊢ (((𝑆 ∈ (SubGrp‘𝐺) ∧ (𝑧 ∈ 𝑆 ∧ 𝑤 ∈ 𝑋)) ∧ (𝑧 + 𝑤) ∈ 𝑆) → 𝑧 ∈ 𝑆)
9	7, 8	sseldd 3181	. . . . . . . . . . . 12 ⊢ (((𝑆 ∈ (SubGrp‘𝐺) ∧ (𝑧 ∈ 𝑆 ∧ 𝑤 ∈ 𝑋)) ∧ (𝑧 + 𝑤) ∈ 𝑆) → 𝑧 ∈ 𝑋)
10		nmzsubg.3	. . . . . . . . . . . . 13 ⊢ + = (+g‘𝐺)
11		eqid 2193	. . . . . . . . . . . . 13 ⊢ (0g‘𝐺) = (0g‘𝐺)
12		eqid 2193	. . . . . . . . . . . . 13 ⊢ (invg‘𝐺) = (invg‘𝐺)
13	1, 10, 11, 12	grplinv 13125	. . . . . . . . . . . 12 ⊢ ((𝐺 ∈ Grp ∧ 𝑧 ∈ 𝑋) → (((invg‘𝐺)‘𝑧) + 𝑧) = (0g‘𝐺))
14	6, 9, 13	syl2anc 411	. . . . . . . . . . 11 ⊢ (((𝑆 ∈ (SubGrp‘𝐺) ∧ (𝑧 ∈ 𝑆 ∧ 𝑤 ∈ 𝑋)) ∧ (𝑧 + 𝑤) ∈ 𝑆) → (((invg‘𝐺)‘𝑧) + 𝑧) = (0g‘𝐺))
15	14	oveq1d 5934	. . . . . . . . . 10 ⊢ (((𝑆 ∈ (SubGrp‘𝐺) ∧ (𝑧 ∈ 𝑆 ∧ 𝑤 ∈ 𝑋)) ∧ (𝑧 + 𝑤) ∈ 𝑆) → ((((invg‘𝐺)‘𝑧) + 𝑧) + 𝑤) = ((0g‘𝐺) + 𝑤))
16	12	subginvcl 13256	. . . . . . . . . . . . 13 ⊢ ((𝑆 ∈ (SubGrp‘𝐺) ∧ 𝑧 ∈ 𝑆) → ((invg‘𝐺)‘𝑧) ∈ 𝑆)
17	4, 8, 16	syl2anc 411	. . . . . . . . . . . 12 ⊢ (((𝑆 ∈ (SubGrp‘𝐺) ∧ (𝑧 ∈ 𝑆 ∧ 𝑤 ∈ 𝑋)) ∧ (𝑧 + 𝑤) ∈ 𝑆) → ((invg‘𝐺)‘𝑧) ∈ 𝑆)
18	7, 17	sseldd 3181	. . . . . . . . . . 11 ⊢ (((𝑆 ∈ (SubGrp‘𝐺) ∧ (𝑧 ∈ 𝑆 ∧ 𝑤 ∈ 𝑋)) ∧ (𝑧 + 𝑤) ∈ 𝑆) → ((invg‘𝐺)‘𝑧) ∈ 𝑋)
19		simplrr 536	. . . . . . . . . . 11 ⊢ (((𝑆 ∈ (SubGrp‘𝐺) ∧ (𝑧 ∈ 𝑆 ∧ 𝑤 ∈ 𝑋)) ∧ (𝑧 + 𝑤) ∈ 𝑆) → 𝑤 ∈ 𝑋)
20	1, 10	grpass 13084	. . . . . . . . . . 11 ⊢ ((𝐺 ∈ Grp ∧ (((invg‘𝐺)‘𝑧) ∈ 𝑋 ∧ 𝑧 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) → ((((invg‘𝐺)‘𝑧) + 𝑧) + 𝑤) = (((invg‘𝐺)‘𝑧) + (𝑧 + 𝑤)))
21	6, 18, 9, 19, 20	syl13anc 1251	. . . . . . . . . 10 ⊢ (((𝑆 ∈ (SubGrp‘𝐺) ∧ (𝑧 ∈ 𝑆 ∧ 𝑤 ∈ 𝑋)) ∧ (𝑧 + 𝑤) ∈ 𝑆) → ((((invg‘𝐺)‘𝑧) + 𝑧) + 𝑤) = (((invg‘𝐺)‘𝑧) + (𝑧 + 𝑤)))
22	1, 10, 11	grplid 13106	. . . . . . . . . . 11 ⊢ ((𝐺 ∈ Grp ∧ 𝑤 ∈ 𝑋) → ((0g‘𝐺) + 𝑤) = 𝑤)
23	6, 19, 22	syl2anc 411	. . . . . . . . . 10 ⊢ (((𝑆 ∈ (SubGrp‘𝐺) ∧ (𝑧 ∈ 𝑆 ∧ 𝑤 ∈ 𝑋)) ∧ (𝑧 + 𝑤) ∈ 𝑆) → ((0g‘𝐺) + 𝑤) = 𝑤)
24	15, 21, 23	3eqtr3d 2234	. . . . . . . . 9 ⊢ (((𝑆 ∈ (SubGrp‘𝐺) ∧ (𝑧 ∈ 𝑆 ∧ 𝑤 ∈ 𝑋)) ∧ (𝑧 + 𝑤) ∈ 𝑆) → (((invg‘𝐺)‘𝑧) + (𝑧 + 𝑤)) = 𝑤)
25		simpr 110	. . . . . . . . . 10 ⊢ (((𝑆 ∈ (SubGrp‘𝐺) ∧ (𝑧 ∈ 𝑆 ∧ 𝑤 ∈ 𝑋)) ∧ (𝑧 + 𝑤) ∈ 𝑆) → (𝑧 + 𝑤) ∈ 𝑆)
26	10	subgcl 13257	. . . . . . . . . 10 ⊢ ((𝑆 ∈ (SubGrp‘𝐺) ∧ ((invg‘𝐺)‘𝑧) ∈ 𝑆 ∧ (𝑧 + 𝑤) ∈ 𝑆) → (((invg‘𝐺)‘𝑧) + (𝑧 + 𝑤)) ∈ 𝑆)
27	4, 17, 25, 26	syl3anc 1249	. . . . . . . . 9 ⊢ (((𝑆 ∈ (SubGrp‘𝐺) ∧ (𝑧 ∈ 𝑆 ∧ 𝑤 ∈ 𝑋)) ∧ (𝑧 + 𝑤) ∈ 𝑆) → (((invg‘𝐺)‘𝑧) + (𝑧 + 𝑤)) ∈ 𝑆)
28	24, 27	eqeltrrd 2271	. . . . . . . 8 ⊢ (((𝑆 ∈ (SubGrp‘𝐺) ∧ (𝑧 ∈ 𝑆 ∧ 𝑤 ∈ 𝑋)) ∧ (𝑧 + 𝑤) ∈ 𝑆) → 𝑤 ∈ 𝑆)
29	10	subgcl 13257	. . . . . . . 8 ⊢ ((𝑆 ∈ (SubGrp‘𝐺) ∧ 𝑤 ∈ 𝑆 ∧ 𝑧 ∈ 𝑆) → (𝑤 + 𝑧) ∈ 𝑆)
30	4, 28, 8, 29	syl3anc 1249	. . . . . . 7 ⊢ (((𝑆 ∈ (SubGrp‘𝐺) ∧ (𝑧 ∈ 𝑆 ∧ 𝑤 ∈ 𝑋)) ∧ (𝑧 + 𝑤) ∈ 𝑆) → (𝑤 + 𝑧) ∈ 𝑆)
31		simpll 527	. . . . . . . 8 ⊢ (((𝑆 ∈ (SubGrp‘𝐺) ∧ (𝑧 ∈ 𝑆 ∧ 𝑤 ∈ 𝑋)) ∧ (𝑤 + 𝑧) ∈ 𝑆) → 𝑆 ∈ (SubGrp‘𝐺))
32		simplrl 535	. . . . . . . 8 ⊢ (((𝑆 ∈ (SubGrp‘𝐺) ∧ (𝑧 ∈ 𝑆 ∧ 𝑤 ∈ 𝑋)) ∧ (𝑤 + 𝑧) ∈ 𝑆) → 𝑧 ∈ 𝑆)
33	31, 5	syl 14	. . . . . . . . . 10 ⊢ (((𝑆 ∈ (SubGrp‘𝐺) ∧ (𝑧 ∈ 𝑆 ∧ 𝑤 ∈ 𝑋)) ∧ (𝑤 + 𝑧) ∈ 𝑆) → 𝐺 ∈ Grp)
34		simplrr 536	. . . . . . . . . 10 ⊢ (((𝑆 ∈ (SubGrp‘𝐺) ∧ (𝑧 ∈ 𝑆 ∧ 𝑤 ∈ 𝑋)) ∧ (𝑤 + 𝑧) ∈ 𝑆) → 𝑤 ∈ 𝑋)
35	31, 32, 3	syl2anc 411	. . . . . . . . . 10 ⊢ (((𝑆 ∈ (SubGrp‘𝐺) ∧ (𝑧 ∈ 𝑆 ∧ 𝑤 ∈ 𝑋)) ∧ (𝑤 + 𝑧) ∈ 𝑆) → 𝑧 ∈ 𝑋)
36		eqid 2193	. . . . . . . . . . 11 ⊢ (-g‘𝐺) = (-g‘𝐺)
37	1, 10, 36	grppncan 13166	. . . . . . . . . 10 ⊢ ((𝐺 ∈ Grp ∧ 𝑤 ∈ 𝑋 ∧ 𝑧 ∈ 𝑋) → ((𝑤 + 𝑧)(-g‘𝐺)𝑧) = 𝑤)
38	33, 34, 35, 37	syl3anc 1249	. . . . . . . . 9 ⊢ (((𝑆 ∈ (SubGrp‘𝐺) ∧ (𝑧 ∈ 𝑆 ∧ 𝑤 ∈ 𝑋)) ∧ (𝑤 + 𝑧) ∈ 𝑆) → ((𝑤 + 𝑧)(-g‘𝐺)𝑧) = 𝑤)
39		simpr 110	. . . . . . . . . 10 ⊢ (((𝑆 ∈ (SubGrp‘𝐺) ∧ (𝑧 ∈ 𝑆 ∧ 𝑤 ∈ 𝑋)) ∧ (𝑤 + 𝑧) ∈ 𝑆) → (𝑤 + 𝑧) ∈ 𝑆)
40	36	subgsubcl 13258	. . . . . . . . . 10 ⊢ ((𝑆 ∈ (SubGrp‘𝐺) ∧ (𝑤 + 𝑧) ∈ 𝑆 ∧ 𝑧 ∈ 𝑆) → ((𝑤 + 𝑧)(-g‘𝐺)𝑧) ∈ 𝑆)
41	31, 39, 32, 40	syl3anc 1249	. . . . . . . . 9 ⊢ (((𝑆 ∈ (SubGrp‘𝐺) ∧ (𝑧 ∈ 𝑆 ∧ 𝑤 ∈ 𝑋)) ∧ (𝑤 + 𝑧) ∈ 𝑆) → ((𝑤 + 𝑧)(-g‘𝐺)𝑧) ∈ 𝑆)
42	38, 41	eqeltrrd 2271	. . . . . . . 8 ⊢ (((𝑆 ∈ (SubGrp‘𝐺) ∧ (𝑧 ∈ 𝑆 ∧ 𝑤 ∈ 𝑋)) ∧ (𝑤 + 𝑧) ∈ 𝑆) → 𝑤 ∈ 𝑆)
43	10	subgcl 13257	. . . . . . . 8 ⊢ ((𝑆 ∈ (SubGrp‘𝐺) ∧ 𝑧 ∈ 𝑆 ∧ 𝑤 ∈ 𝑆) → (𝑧 + 𝑤) ∈ 𝑆)
44	31, 32, 42, 43	syl3anc 1249	. . . . . . 7 ⊢ (((𝑆 ∈ (SubGrp‘𝐺) ∧ (𝑧 ∈ 𝑆 ∧ 𝑤 ∈ 𝑋)) ∧ (𝑤 + 𝑧) ∈ 𝑆) → (𝑧 + 𝑤) ∈ 𝑆)
45	30, 44	impbida 596	. . . . . 6 ⊢ ((𝑆 ∈ (SubGrp‘𝐺) ∧ (𝑧 ∈ 𝑆 ∧ 𝑤 ∈ 𝑋)) → ((𝑧 + 𝑤) ∈ 𝑆 ↔ (𝑤 + 𝑧) ∈ 𝑆))
46	45	anassrs 400	. . . . 5 ⊢ (((𝑆 ∈ (SubGrp‘𝐺) ∧ 𝑧 ∈ 𝑆) ∧ 𝑤 ∈ 𝑋) → ((𝑧 + 𝑤) ∈ 𝑆 ↔ (𝑤 + 𝑧) ∈ 𝑆))
47	46	ralrimiva 2567	. . . 4 ⊢ ((𝑆 ∈ (SubGrp‘𝐺) ∧ 𝑧 ∈ 𝑆) → ∀𝑤 ∈ 𝑋 ((𝑧 + 𝑤) ∈ 𝑆 ↔ (𝑤 + 𝑧) ∈ 𝑆))
48		elnmz.1	. . . . 5 ⊢ 𝑁 = {𝑥 ∈ 𝑋 ∣ ∀𝑦 ∈ 𝑋 ((𝑥 + 𝑦) ∈ 𝑆 ↔ (𝑦 + 𝑥) ∈ 𝑆)}
49	48	elnmz 13281	. . . 4 ⊢ (𝑧 ∈ 𝑁 ↔ (𝑧 ∈ 𝑋 ∧ ∀𝑤 ∈ 𝑋 ((𝑧 + 𝑤) ∈ 𝑆 ↔ (𝑤 + 𝑧) ∈ 𝑆)))
50	3, 47, 49	sylanbrc 417	. . 3 ⊢ ((𝑆 ∈ (SubGrp‘𝐺) ∧ 𝑧 ∈ 𝑆) → 𝑧 ∈ 𝑁)
51	50	ex 115	. 2 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → (𝑧 ∈ 𝑆 → 𝑧 ∈ 𝑁))
52	51	ssrdv 3186	1 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → 𝑆 ⊆ 𝑁)

Syntax hints:   → wi 4   ∧ wa 104   ↔ wb 105   = wceq 1364   ∈ wcel 2164  ∀wral 2472  {crab 2476   ⊆ wss 3154  ‘cfv 5255  (class class class)co 5919  Basecbs 12621  +_gcplusg 12698  0_gc0g 12870  Grpcgrp 13075  inv_gcminusg 13076  -_gcsg 13077  SubGrpcsubg 13240

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 615  ax-in2 616  ax-io 710  ax-5 1458  ax-7 1459  ax-gen 1460  ax-ie1 1504  ax-ie2 1505  ax-8 1515  ax-10 1516  ax-11 1517  ax-i12 1518  ax-bndl 1520  ax-4 1521  ax-17 1537  ax-i9 1541  ax-ial 1545  ax-i5r 1546  ax-13 2166  ax-14 2167  ax-ext 2175  ax-coll 4145  ax-sep 4148  ax-pow 4204  ax-pr 4239  ax-un 4465  ax-setind 4570  ax-cnex 7965  ax-resscn 7966  ax-1cn 7967  ax-1re 7968  ax-icn 7969  ax-addcl 7970  ax-addrcl 7971  ax-mulcl 7972  ax-addcom 7974  ax-addass 7976  ax-i2m1 7979  ax-0lt1 7980  ax-0id 7982  ax-rnegex 7983  ax-pre-ltirr 7986  ax-pre-ltadd 7990

This theorem depends on definitions:  df-bi 117  df-3an 982  df-tru 1367  df-fal 1370  df-nf 1472  df-sb 1774  df-eu 2045  df-mo 2046  df-clab 2180  df-cleq 2186  df-clel 2189  df-nfc 2325  df-ne 2365  df-nel 2460  df-ral 2477  df-rex 2478  df-reu 2479  df-rmo 2480  df-rab 2481  df-v 2762  df-sbc 2987  df-csb 3082  df-dif 3156  df-un 3158  df-in 3160  df-ss 3167  df-nul 3448  df-pw 3604  df-sn 3625  df-pr 3626  df-op 3628  df-uni 3837  df-int 3872  df-iun 3915  df-br 4031  df-opab 4092  df-mpt 4093  df-id 4325  df-xp 4666  df-rel 4667  df-cnv 4668  df-co 4669  df-dm 4670  df-rn 4671  df-res 4672  df-ima 4673  df-iota 5216  df-fun 5257  df-fn 5258  df-f 5259  df-f1 5260  df-fo 5261  df-f1o 5262  df-fv 5263  df-riota 5874  df-ov 5922  df-oprab 5923  df-mpo 5924  df-1st 6195  df-2nd 6196  df-pnf 8058  df-mnf 8059  df-ltxr 8061  df-inn 8985  df-2 9043  df-ndx 12624  df-slot 12625  df-base 12627  df-sets 12628  df-iress 12629  df-plusg 12711  df-0g 12872  df-mgm 12942  df-sgrp 12988  df-mnd 13001  df-grp 13078  df-minusg 13079  df-sbg 13080  df-subg 13243

This theorem is referenced by:  nmznsg  13286