Theorem ssnmz 13489

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 13452	. . . . 5 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → 𝑆 ⊆ 𝑋)
3	2	sselda 3192	. . . 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 13457	. . . . . . . . . . . . 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 3193	. . . . . . . . . . . 12 ⊢ (((𝑆 ∈ (SubGrp‘𝐺) ∧ (𝑧 ∈ 𝑆 ∧ 𝑤 ∈ 𝑋)) ∧ (𝑧 + 𝑤) ∈ 𝑆) → 𝑧 ∈ 𝑋)
10		nmzsubg.3	. . . . . . . . . . . . 13 ⊢ + = (+g‘𝐺)
11		eqid 2204	. . . . . . . . . . . . 13 ⊢ (0g‘𝐺) = (0g‘𝐺)
12		eqid 2204	. . . . . . . . . . . . 13 ⊢ (invg‘𝐺) = (invg‘𝐺)
13	1, 10, 11, 12	grplinv 13324	. . . . . . . . . . . 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 5958	. . . . . . . . . 10 ⊢ (((𝑆 ∈ (SubGrp‘𝐺) ∧ (𝑧 ∈ 𝑆 ∧ 𝑤 ∈ 𝑋)) ∧ (𝑧 + 𝑤) ∈ 𝑆) → ((((invg‘𝐺)‘𝑧) + 𝑧) + 𝑤) = ((0g‘𝐺) + 𝑤))
16	12	subginvcl 13461	. . . . . . . . . . . . 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 3193	. . . . . . . . . . 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 13283	. . . . . . . . . . 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 13305	. . . . . . . . . . 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 2245	. . . . . . . . 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 13462	. . . . . . . . . 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 2282	. . . . . . . 8 ⊢ (((𝑆 ∈ (SubGrp‘𝐺) ∧ (𝑧 ∈ 𝑆 ∧ 𝑤 ∈ 𝑋)) ∧ (𝑧 + 𝑤) ∈ 𝑆) → 𝑤 ∈ 𝑆)
29	10	subgcl 13462	. . . . . . . 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 2204	. . . . . . . . . . 11 ⊢ (-g‘𝐺) = (-g‘𝐺)
37	1, 10, 36	grppncan 13365	. . . . . . . . . 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 13463	. . . . . . . . . 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 2282	. . . . . . . 8 ⊢ (((𝑆 ∈ (SubGrp‘𝐺) ∧ (𝑧 ∈ 𝑆 ∧ 𝑤 ∈ 𝑋)) ∧ (𝑤 + 𝑧) ∈ 𝑆) → 𝑤 ∈ 𝑆)
43	10	subgcl 13462	. . . . . . . 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 2578	. . . 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 13486	. . . 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 3198	1 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → 𝑆 ⊆ 𝑁)

Syntax hints:   → wi 4   ∧ wa 104   ↔ wb 105   = wceq 1372   ∈ wcel 2175  ∀wral 2483  {crab 2487   ⊆ wss 3165  ‘cfv 5270  (class class class)co 5943  Basecbs 12774  +_gcplusg 12851  0_gc0g 13030  Grpcgrp 13274  inv_gcminusg 13275  -_gcsg 13276  SubGrpcsubg 13445

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 1469  ax-7 1470  ax-gen 1471  ax-ie1 1515  ax-ie2 1516  ax-8 1526  ax-10 1527  ax-11 1528  ax-i12 1529  ax-bndl 1531  ax-4 1532  ax-17 1548  ax-i9 1552  ax-ial 1556  ax-i5r 1557  ax-13 2177  ax-14 2178  ax-ext 2186  ax-coll 4158  ax-sep 4161  ax-pow 4217  ax-pr 4252  ax-un 4479  ax-setind 4584  ax-cnex 8015  ax-resscn 8016  ax-1cn 8017  ax-1re 8018  ax-icn 8019  ax-addcl 8020  ax-addrcl 8021  ax-mulcl 8022  ax-addcom 8024  ax-addass 8026  ax-i2m1 8029  ax-0lt1 8030  ax-0id 8032  ax-rnegex 8033  ax-pre-ltirr 8036  ax-pre-ltadd 8040

This theorem depends on definitions:  df-bi 117  df-3an 982  df-tru 1375  df-fal 1378  df-nf 1483  df-sb 1785  df-eu 2056  df-mo 2057  df-clab 2191  df-cleq 2197  df-clel 2200  df-nfc 2336  df-ne 2376  df-nel 2471  df-ral 2488  df-rex 2489  df-reu 2490  df-rmo 2491  df-rab 2492  df-v 2773  df-sbc 2998  df-csb 3093  df-dif 3167  df-un 3169  df-in 3171  df-ss 3178  df-nul 3460  df-pw 3617  df-sn 3638  df-pr 3639  df-op 3641  df-uni 3850  df-int 3885  df-iun 3928  df-br 4044  df-opab 4105  df-mpt 4106  df-id 4339  df-xp 4680  df-rel 4681  df-cnv 4682  df-co 4683  df-dm 4684  df-rn 4685  df-res 4686  df-ima 4687  df-iota 5231  df-fun 5272  df-fn 5273  df-f 5274  df-f1 5275  df-fo 5276  df-f1o 5277  df-fv 5278  df-riota 5898  df-ov 5946  df-oprab 5947  df-mpo 5948  df-1st 6225  df-2nd 6226  df-pnf 8108  df-mnf 8109  df-ltxr 8111  df-inn 9036  df-2 9094  df-ndx 12777  df-slot 12778  df-base 12780  df-sets 12781  df-iress 12782  df-plusg 12864  df-0g 13032  df-mgm 13130  df-sgrp 13176  df-mnd 13191  df-grp 13277  df-minusg 13278  df-sbg 13279  df-subg 13448

This theorem is referenced by:  nmznsg  13491