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Theorem dprdcntz2 19902

Description: The function 𝑆 is a family of subgroups. (Contributed by Mario Carneiro, 26-Apr-2016.)

**Hypotheses**
Ref	Expression
dprdcntz2.1	⊢ (𝜑 → 𝐺dom DProd 𝑆)
dprdcntz2.2	⊢ (𝜑 → dom 𝑆 = 𝐼)
dprdcntz2.c	⊢ (𝜑 → 𝐶 ⊆ 𝐼)
dprdcntz2.d	⊢ (𝜑 → 𝐷 ⊆ 𝐼)
dprdcntz2.i	⊢ (𝜑 → (𝐶 ∩ 𝐷) = ∅)
dprdcntz2.z	⊢ 𝑍 = (Cntz‘𝐺)

**Assertion**
Ref	Expression
dprdcntz2	⊢ (𝜑 → (𝐺 DProd (𝑆 ↾ 𝐶)) ⊆ (𝑍‘(𝐺 DProd (𝑆 ↾ 𝐷))))

Proof of Theorem dprdcntz2 Dummy variables 𝑥 𝑦 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		dprdcntz2.1	. . . 4 ⊢ (𝜑 → 𝐺dom DProd 𝑆)
2		dprdcntz2.2	. . . 4 ⊢ (𝜑 → dom 𝑆 = 𝐼)
3		dprdcntz2.c	. . . 4 ⊢ (𝜑 → 𝐶 ⊆ 𝐼)
4	1, 2, 3	dprdres 19892	. . 3 ⊢ (𝜑 → (𝐺dom DProd (𝑆 ↾ 𝐶) ∧ (𝐺 DProd (𝑆 ↾ 𝐶)) ⊆ (𝐺 DProd 𝑆)))
5	4	simpld 495	. 2 ⊢ (𝜑 → 𝐺dom DProd (𝑆 ↾ 𝐶))
6		dmres 6001	. . 3 ⊢ dom (𝑆 ↾ 𝐶) = (𝐶 ∩ dom 𝑆)
7	3, 2	sseqtrrd 4022	. . . 4 ⊢ (𝜑 → 𝐶 ⊆ dom 𝑆)
8		df-ss 3964	. . . 4 ⊢ (𝐶 ⊆ dom 𝑆 ↔ (𝐶 ∩ dom 𝑆) = 𝐶)
9	7, 8	sylib 217	. . 3 ⊢ (𝜑 → (𝐶 ∩ dom 𝑆) = 𝐶)
10	6, 9	eqtrid 2784	. 2 ⊢ (𝜑 → dom (𝑆 ↾ 𝐶) = 𝐶)
11		dprdgrp 19869	. . . 4 ⊢ (𝐺dom DProd 𝑆 → 𝐺 ∈ Grp)
12	1, 11	syl 17	. . 3 ⊢ (𝜑 → 𝐺 ∈ Grp)
13		eqid 2732	. . . 4 ⊢ (Base‘𝐺) = (Base‘𝐺)
14	13	dprdssv 19880	. . 3 ⊢ (𝐺 DProd (𝑆 ↾ 𝐷)) ⊆ (Base‘𝐺)
15		dprdcntz2.z	. . . 4 ⊢ 𝑍 = (Cntz‘𝐺)
16	13, 15	cntzsubg 19197	. . 3 ⊢ ((𝐺 ∈ Grp ∧ (𝐺 DProd (𝑆 ↾ 𝐷)) ⊆ (Base‘𝐺)) → (𝑍‘(𝐺 DProd (𝑆 ↾ 𝐷))) ∈ (SubGrp‘𝐺))
17	12, 14, 16	sylancl 586	. 2 ⊢ (𝜑 → (𝑍‘(𝐺 DProd (𝑆 ↾ 𝐷))) ∈ (SubGrp‘𝐺))
18		fvres 6907	. . . 4 ⊢ (𝑥 ∈ 𝐶 → ((𝑆 ↾ 𝐶)‘𝑥) = (𝑆‘𝑥))
19	18	adantl 482	. . 3 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → ((𝑆 ↾ 𝐶)‘𝑥) = (𝑆‘𝑥))
20		dprdcntz2.d	. . . . . . . 8 ⊢ (𝜑 → 𝐷 ⊆ 𝐼)
21	1, 2, 20	dprdres 19892	. . . . . . 7 ⊢ (𝜑 → (𝐺dom DProd (𝑆 ↾ 𝐷) ∧ (𝐺 DProd (𝑆 ↾ 𝐷)) ⊆ (𝐺 DProd 𝑆)))
22	21	simpld 495	. . . . . 6 ⊢ (𝜑 → 𝐺dom DProd (𝑆 ↾ 𝐷))
23	22	adantr 481	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → 𝐺dom DProd (𝑆 ↾ 𝐷))
24		dprdsubg 19888	. . . . 5 ⊢ (𝐺dom DProd (𝑆 ↾ 𝐷) → (𝐺 DProd (𝑆 ↾ 𝐷)) ∈ (SubGrp‘𝐺))
25	23, 24	syl 17	. . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → (𝐺 DProd (𝑆 ↾ 𝐷)) ∈ (SubGrp‘𝐺))
26	3	sselda 3981	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → 𝑥 ∈ 𝐼)
27	1, 2	dprdf2 19871	. . . . . 6 ⊢ (𝜑 → 𝑆:𝐼⟶(SubGrp‘𝐺))
28	27	ffvelcdmda 7083	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐼) → (𝑆‘𝑥) ∈ (SubGrp‘𝐺))
29	26, 28	syldan 591	. . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → (𝑆‘𝑥) ∈ (SubGrp‘𝐺))
30		dmres 6001	. . . . . . 7 ⊢ dom (𝑆 ↾ 𝐷) = (𝐷 ∩ dom 𝑆)
31	20, 2	sseqtrrd 4022	. . . . . . . 8 ⊢ (𝜑 → 𝐷 ⊆ dom 𝑆)
32		df-ss 3964	. . . . . . . 8 ⊢ (𝐷 ⊆ dom 𝑆 ↔ (𝐷 ∩ dom 𝑆) = 𝐷)
33	31, 32	sylib 217	. . . . . . 7 ⊢ (𝜑 → (𝐷 ∩ dom 𝑆) = 𝐷)
34	30, 33	eqtrid 2784	. . . . . 6 ⊢ (𝜑 → dom (𝑆 ↾ 𝐷) = 𝐷)
35	34	adantr 481	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → dom (𝑆 ↾ 𝐷) = 𝐷)
36	12	adantr 481	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → 𝐺 ∈ Grp)
37	13	subgss 19001	. . . . . . 7 ⊢ ((𝑆‘𝑥) ∈ (SubGrp‘𝐺) → (𝑆‘𝑥) ⊆ (Base‘𝐺))
38	29, 37	syl 17	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → (𝑆‘𝑥) ⊆ (Base‘𝐺))
39	13, 15	cntzsubg 19197	. . . . . 6 ⊢ ((𝐺 ∈ Grp ∧ (𝑆‘𝑥) ⊆ (Base‘𝐺)) → (𝑍‘(𝑆‘𝑥)) ∈ (SubGrp‘𝐺))
40	36, 38, 39	syl2anc 584	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → (𝑍‘(𝑆‘𝑥)) ∈ (SubGrp‘𝐺))
41		fvres 6907	. . . . . . 7 ⊢ (𝑦 ∈ 𝐷 → ((𝑆 ↾ 𝐷)‘𝑦) = (𝑆‘𝑦))
42	41	adantl 482	. . . . . 6 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝐶) ∧ 𝑦 ∈ 𝐷) → ((𝑆 ↾ 𝐷)‘𝑦) = (𝑆‘𝑦))
43	1	ad2antrr 724	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝐶) ∧ 𝑦 ∈ 𝐷) → 𝐺dom DProd 𝑆)
44	2	ad2antrr 724	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝐶) ∧ 𝑦 ∈ 𝐷) → dom 𝑆 = 𝐼)
45	20	adantr 481	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → 𝐷 ⊆ 𝐼)
46	45	sselda 3981	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝐶) ∧ 𝑦 ∈ 𝐷) → 𝑦 ∈ 𝐼)
47	26	adantr 481	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝐶) ∧ 𝑦 ∈ 𝐷) → 𝑥 ∈ 𝐼)
48		simpr 485	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝐶) ∧ 𝑦 ∈ 𝐷) → 𝑦 ∈ 𝐷)
49		noel 4329	. . . . . . . . . . . 12 ⊢ ¬ 𝑥 ∈ ∅
50		elin 3963	. . . . . . . . . . . . 13 ⊢ (𝑥 ∈ (𝐶 ∩ 𝐷) ↔ (𝑥 ∈ 𝐶 ∧ 𝑥 ∈ 𝐷))
51		dprdcntz2.i	. . . . . . . . . . . . . 14 ⊢ (𝜑 → (𝐶 ∩ 𝐷) = ∅)
52	51	eleq2d 2819	. . . . . . . . . . . . 13 ⊢ (𝜑 → (𝑥 ∈ (𝐶 ∩ 𝐷) ↔ 𝑥 ∈ ∅))
53	50, 52	bitr3id 284	. . . . . . . . . . . 12 ⊢ (𝜑 → ((𝑥 ∈ 𝐶 ∧ 𝑥 ∈ 𝐷) ↔ 𝑥 ∈ ∅))
54	49, 53	mtbiri 326	. . . . . . . . . . 11 ⊢ (𝜑 → ¬ (𝑥 ∈ 𝐶 ∧ 𝑥 ∈ 𝐷))
55		imnan 400	. . . . . . . . . . 11 ⊢ ((𝑥 ∈ 𝐶 → ¬ 𝑥 ∈ 𝐷) ↔ ¬ (𝑥 ∈ 𝐶 ∧ 𝑥 ∈ 𝐷))
56	54, 55	sylibr 233	. . . . . . . . . 10 ⊢ (𝜑 → (𝑥 ∈ 𝐶 → ¬ 𝑥 ∈ 𝐷))
57	56	imp 407	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → ¬ 𝑥 ∈ 𝐷)
58	57	adantr 481	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝐶) ∧ 𝑦 ∈ 𝐷) → ¬ 𝑥 ∈ 𝐷)
59		nelne2 3040	. . . . . . . 8 ⊢ ((𝑦 ∈ 𝐷 ∧ ¬ 𝑥 ∈ 𝐷) → 𝑦 ≠ 𝑥)
60	48, 58, 59	syl2anc 584	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝐶) ∧ 𝑦 ∈ 𝐷) → 𝑦 ≠ 𝑥)
61	43, 44, 46, 47, 60, 15	dprdcntz 19872	. . . . . 6 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝐶) ∧ 𝑦 ∈ 𝐷) → (𝑆‘𝑦) ⊆ (𝑍‘(𝑆‘𝑥)))
62	42, 61	eqsstrd 4019	. . . . 5 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝐶) ∧ 𝑦 ∈ 𝐷) → ((𝑆 ↾ 𝐷)‘𝑦) ⊆ (𝑍‘(𝑆‘𝑥)))
63	23, 35, 40, 62	dprdlub 19890	. . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → (𝐺 DProd (𝑆 ↾ 𝐷)) ⊆ (𝑍‘(𝑆‘𝑥)))
64	15, 25, 29, 63	cntzrecd 19540	. . 3 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → (𝑆‘𝑥) ⊆ (𝑍‘(𝐺 DProd (𝑆 ↾ 𝐷))))
65	19, 64	eqsstrd 4019	. 2 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → ((𝑆 ↾ 𝐶)‘𝑥) ⊆ (𝑍‘(𝐺 DProd (𝑆 ↾ 𝐷))))
66	5, 10, 17, 65	dprdlub 19890	1 ⊢ (𝜑 → (𝐺 DProd (𝑆 ↾ 𝐶)) ⊆ (𝑍‘(𝐺 DProd (𝑆 ↾ 𝐷))))

Colors of variables: wff setvar class

Syntax hints: ¬ wn 3 → wi 4 ∧ wa 396 = wceq 1541 ∈ wcel 2106 ≠ wne 2940 ∩ cin 3946 ⊆ wss 3947 ∅c0 4321 class class class wbr 5147 dom cdm 5675 ↾ cres 5677 ‘cfv 6540 (class class class)co 7405 Basecbs 17140 Grpcgrp 18815 SubGrpcsubg 18994 Cntzccntz 19173 DProd cdprd 19857

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-11 2154 ax-12 2171 ax-ext 2703 ax-rep 5284 ax-sep 5298 ax-nul 5305 ax-pow 5362 ax-pr 5426 ax-un 7721 ax-cnex 11162 ax-resscn 11163 ax-1cn 11164 ax-icn 11165 ax-addcl 11166 ax-addrcl 11167 ax-mulcl 11168 ax-mulrcl 11169 ax-mulcom 11170 ax-addass 11171 ax-mulass 11172 ax-distr 11173 ax-i2m1 11174 ax-1ne0 11175 ax-1rid 11176 ax-rnegex 11177 ax-rrecex 11178 ax-cnre 11179 ax-pre-lttri 11180 ax-pre-lttrn 11181 ax-pre-ltadd 11182 ax-pre-mulgt0 11183

This theorem depends on definitions: df-bi 206 df-an 397 df-or 846 df-3or 1088 df-3an 1089 df-tru 1544 df-fal 1554 df-ex 1782 df-nf 1786 df-sb 2068 df-mo 2534 df-eu 2563 df-clab 2710 df-cleq 2724 df-clel 2810 df-nfc 2885 df-ne 2941 df-nel 3047 df-ral 3062 df-rex 3071 df-rmo 3376 df-reu 3377 df-rab 3433 df-v 3476 df-sbc 3777 df-csb 3893 df-dif 3950 df-un 3952 df-in 3954 df-ss 3964 df-pss 3966 df-nul 4322 df-if 4528 df-pw 4603 df-sn 4628 df-pr 4630 df-op 4634 df-uni 4908 df-int 4950 df-iun 4998 df-iin 4999 df-br 5148 df-opab 5210 df-mpt 5231 df-tr 5265 df-id 5573 df-eprel 5579 df-po 5587 df-so 5588 df-fr 5630 df-se 5631 df-we 5632 df-xp 5681 df-rel 5682 df-cnv 5683 df-co 5684 df-dm 5685 df-rn 5686 df-res 5687 df-ima 5688 df-pred 6297 df-ord 6364 df-on 6365 df-lim 6366 df-suc 6367 df-iota 6492 df-fun 6542 df-fn 6543 df-f 6544 df-f1 6545 df-fo 6546 df-f1o 6547 df-fv 6548 df-isom 6549 df-riota 7361 df-ov 7408 df-oprab 7409 df-mpo 7410 df-of 7666 df-om 7852 df-1st 7971 df-2nd 7972 df-supp 8143 df-tpos 8207 df-frecs 8262 df-wrecs 8293 df-recs 8367 df-rdg 8406 df-1o 8462 df-er 8699 df-map 8818 df-ixp 8888 df-en 8936 df-dom 8937 df-sdom 8938 df-fin 8939 df-fsupp 9358 df-oi 9501 df-card 9930 df-pnf 11246 df-mnf 11247 df-xr 11248 df-ltxr 11249 df-le 11250 df-sub 11442 df-neg 11443 df-nn 12209 df-2 12271 df-n0 12469 df-z 12555 df-uz 12819 df-fz 13481 df-fzo 13624 df-seq 13963 df-hash 14287 df-sets 17093 df-slot 17111 df-ndx 17123 df-base 17141 df-ress 17170 df-plusg 17206 df-0g 17383 df-gsum 17384 df-mre 17526 df-mrc 17527 df-acs 17529 df-mgm 18557 df-sgrp 18606 df-mnd 18622 df-mhm 18667 df-submnd 18668 df-grp 18818 df-minusg 18819 df-sbg 18820 df-mulg 18945 df-subg 18997 df-ghm 19084 df-gim 19127 df-cntz 19175 df-oppg 19204 df-cmn 19644 df-dprd 19859

This theorem is referenced by: dprd2da 19906 dmdprdsplit 19911 ablfac1eulem 19936 ablfac1eu 19937

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