Theorem ssnmz 13797

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 13760	. . . . 5 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → 𝑆 ⊆ 𝑋)
3	2	sselda 3227	. . . 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 13765	. . . . . . . . . . . . 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 537	. . . . . . . . . . . . 13 ⊢ (((𝑆 ∈ (SubGrp‘𝐺) ∧ (𝑧 ∈ 𝑆 ∧ 𝑤 ∈ 𝑋)) ∧ (𝑧 + 𝑤) ∈ 𝑆) → 𝑧 ∈ 𝑆)
9	7, 8	sseldd 3228	. . . . . . . . . . . 12 ⊢ (((𝑆 ∈ (SubGrp‘𝐺) ∧ (𝑧 ∈ 𝑆 ∧ 𝑤 ∈ 𝑋)) ∧ (𝑧 + 𝑤) ∈ 𝑆) → 𝑧 ∈ 𝑋)
10		nmzsubg.3	. . . . . . . . . . . . 13 ⊢ + = (+g‘𝐺)
11		eqid 2231	. . . . . . . . . . . . 13 ⊢ (0g‘𝐺) = (0g‘𝐺)
12		eqid 2231	. . . . . . . . . . . . 13 ⊢ (invg‘𝐺) = (invg‘𝐺)
13	1, 10, 11, 12	grplinv 13632	. . . . . . . . . . . 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 6032	. . . . . . . . . 10 ⊢ (((𝑆 ∈ (SubGrp‘𝐺) ∧ (𝑧 ∈ 𝑆 ∧ 𝑤 ∈ 𝑋)) ∧ (𝑧 + 𝑤) ∈ 𝑆) → ((((invg‘𝐺)‘𝑧) + 𝑧) + 𝑤) = ((0g‘𝐺) + 𝑤))
16	12	subginvcl 13769	. . . . . . . . . . . . 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 3228	. . . . . . . . . . 11 ⊢ (((𝑆 ∈ (SubGrp‘𝐺) ∧ (𝑧 ∈ 𝑆 ∧ 𝑤 ∈ 𝑋)) ∧ (𝑧 + 𝑤) ∈ 𝑆) → ((invg‘𝐺)‘𝑧) ∈ 𝑋)
19		simplrr 538	. . . . . . . . . . 11 ⊢ (((𝑆 ∈ (SubGrp‘𝐺) ∧ (𝑧 ∈ 𝑆 ∧ 𝑤 ∈ 𝑋)) ∧ (𝑧 + 𝑤) ∈ 𝑆) → 𝑤 ∈ 𝑋)
20	1, 10	grpass 13591	. . . . . . . . . . 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 1275	. . . . . . . . . 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 13613	. . . . . . . . . . 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 2272	. . . . . . . . 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 13770	. . . . . . . . . 10 ⊢ ((𝑆 ∈ (SubGrp‘𝐺) ∧ ((invg‘𝐺)‘𝑧) ∈ 𝑆 ∧ (𝑧 + 𝑤) ∈ 𝑆) → (((invg‘𝐺)‘𝑧) + (𝑧 + 𝑤)) ∈ 𝑆)
27	4, 17, 25, 26	syl3anc 1273	. . . . . . . . 9 ⊢ (((𝑆 ∈ (SubGrp‘𝐺) ∧ (𝑧 ∈ 𝑆 ∧ 𝑤 ∈ 𝑋)) ∧ (𝑧 + 𝑤) ∈ 𝑆) → (((invg‘𝐺)‘𝑧) + (𝑧 + 𝑤)) ∈ 𝑆)
28	24, 27	eqeltrrd 2309	. . . . . . . 8 ⊢ (((𝑆 ∈ (SubGrp‘𝐺) ∧ (𝑧 ∈ 𝑆 ∧ 𝑤 ∈ 𝑋)) ∧ (𝑧 + 𝑤) ∈ 𝑆) → 𝑤 ∈ 𝑆)
29	10	subgcl 13770	. . . . . . . 8 ⊢ ((𝑆 ∈ (SubGrp‘𝐺) ∧ 𝑤 ∈ 𝑆 ∧ 𝑧 ∈ 𝑆) → (𝑤 + 𝑧) ∈ 𝑆)
30	4, 28, 8, 29	syl3anc 1273	. . . . . . 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 537	. . . . . . . 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 538	. . . . . . . . . 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 2231	. . . . . . . . . . 11 ⊢ (-g‘𝐺) = (-g‘𝐺)
37	1, 10, 36	grppncan 13673	. . . . . . . . . 10 ⊢ ((𝐺 ∈ Grp ∧ 𝑤 ∈ 𝑋 ∧ 𝑧 ∈ 𝑋) → ((𝑤 + 𝑧)(-g‘𝐺)𝑧) = 𝑤)
38	33, 34, 35, 37	syl3anc 1273	. . . . . . . . 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 13771	. . . . . . . . . 10 ⊢ ((𝑆 ∈ (SubGrp‘𝐺) ∧ (𝑤 + 𝑧) ∈ 𝑆 ∧ 𝑧 ∈ 𝑆) → ((𝑤 + 𝑧)(-g‘𝐺)𝑧) ∈ 𝑆)
41	31, 39, 32, 40	syl3anc 1273	. . . . . . . . 9 ⊢ (((𝑆 ∈ (SubGrp‘𝐺) ∧ (𝑧 ∈ 𝑆 ∧ 𝑤 ∈ 𝑋)) ∧ (𝑤 + 𝑧) ∈ 𝑆) → ((𝑤 + 𝑧)(-g‘𝐺)𝑧) ∈ 𝑆)
42	38, 41	eqeltrrd 2309	. . . . . . . 8 ⊢ (((𝑆 ∈ (SubGrp‘𝐺) ∧ (𝑧 ∈ 𝑆 ∧ 𝑤 ∈ 𝑋)) ∧ (𝑤 + 𝑧) ∈ 𝑆) → 𝑤 ∈ 𝑆)
43	10	subgcl 13770	. . . . . . . 8 ⊢ ((𝑆 ∈ (SubGrp‘𝐺) ∧ 𝑧 ∈ 𝑆 ∧ 𝑤 ∈ 𝑆) → (𝑧 + 𝑤) ∈ 𝑆)
44	31, 32, 42, 43	syl3anc 1273	. . . . . . 7 ⊢ (((𝑆 ∈ (SubGrp‘𝐺) ∧ (𝑧 ∈ 𝑆 ∧ 𝑤 ∈ 𝑋)) ∧ (𝑤 + 𝑧) ∈ 𝑆) → (𝑧 + 𝑤) ∈ 𝑆)
45	30, 44	impbida 600	. . . . . 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 2605	. . . 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 13794	. . . 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 3233	1 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → 𝑆 ⊆ 𝑁)

Syntax hints:   → wi 4   ∧ wa 104   ↔ wb 105   = wceq 1397   ∈ wcel 2202  ∀wral 2510  {crab 2514   ⊆ wss 3200  ‘cfv 5326  (class class class)co 6017  Basecbs 13081  +_gcplusg 13159  0_gc0g 13338  Grpcgrp 13582  inv_gcminusg 13583  -_gcsg 13584  SubGrpcsubg 13753

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 619  ax-in2 620  ax-io 716  ax-5 1495  ax-7 1496  ax-gen 1497  ax-ie1 1541  ax-ie2 1542  ax-8 1552  ax-10 1553  ax-11 1554  ax-i12 1555  ax-bndl 1557  ax-4 1558  ax-17 1574  ax-i9 1578  ax-ial 1582  ax-i5r 1583  ax-13 2204  ax-14 2205  ax-ext 2213  ax-coll 4204  ax-sep 4207  ax-pow 4264  ax-pr 4299  ax-un 4530  ax-setind 4635  ax-cnex 8122  ax-resscn 8123  ax-1cn 8124  ax-1re 8125  ax-icn 8126  ax-addcl 8127  ax-addrcl 8128  ax-mulcl 8129  ax-addcom 8131  ax-addass 8133  ax-i2m1 8136  ax-0lt1 8137  ax-0id 8139  ax-rnegex 8140  ax-pre-ltirr 8143  ax-pre-ltadd 8147

This theorem depends on definitions:  df-bi 117  df-3an 1006  df-tru 1400  df-fal 1403  df-nf 1509  df-sb 1811  df-eu 2082  df-mo 2083  df-clab 2218  df-cleq 2224  df-clel 2227  df-nfc 2363  df-ne 2403  df-nel 2498  df-ral 2515  df-rex 2516  df-reu 2517  df-rmo 2518  df-rab 2519  df-v 2804  df-sbc 3032  df-csb 3128  df-dif 3202  df-un 3204  df-in 3206  df-ss 3213  df-nul 3495  df-pw 3654  df-sn 3675  df-pr 3676  df-op 3678  df-uni 3894  df-int 3929  df-iun 3972  df-br 4089  df-opab 4151  df-mpt 4152  df-id 4390  df-xp 4731  df-rel 4732  df-cnv 4733  df-co 4734  df-dm 4735  df-rn 4736  df-res 4737  df-ima 4738  df-iota 5286  df-fun 5328  df-fn 5329  df-f 5330  df-f1 5331  df-fo 5332  df-f1o 5333  df-fv 5334  df-riota 5970  df-ov 6020  df-oprab 6021  df-mpo 6022  df-1st 6302  df-2nd 6303  df-pnf 8215  df-mnf 8216  df-ltxr 8218  df-inn 9143  df-2 9201  df-ndx 13084  df-slot 13085  df-base 13087  df-sets 13088  df-iress 13089  df-plusg 13172  df-0g 13340  df-mgm 13438  df-sgrp 13484  df-mnd 13499  df-grp 13585  df-minusg 13586  df-sbg 13587  df-subg 13756

This theorem is referenced by:  nmznsg  13799