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Theorem dprdcntz2 19960

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 19950	. . 3 ⊢ (𝜑 → (𝐺dom DProd (𝑆 ↾ 𝐶) ∧ (𝐺 DProd (𝑆 ↾ 𝐶)) ⊆ (𝐺 DProd 𝑆)))
5	4	simpld 494	. 2 ⊢ (𝜑 → 𝐺dom DProd (𝑆 ↾ 𝐶))
6		dmres 5997	. . 3 ⊢ dom (𝑆 ↾ 𝐶) = (𝐶 ∩ dom 𝑆)
7	3, 2	sseqtrrd 4018	. . . 4 ⊢ (𝜑 → 𝐶 ⊆ dom 𝑆)
8		df-ss 3960	. . . 4 ⊢ (𝐶 ⊆ dom 𝑆 ↔ (𝐶 ∩ dom 𝑆) = 𝐶)
9	7, 8	sylib 217	. . 3 ⊢ (𝜑 → (𝐶 ∩ dom 𝑆) = 𝐶)
10	6, 9	eqtrid 2778	. 2 ⊢ (𝜑 → dom (𝑆 ↾ 𝐶) = 𝐶)
11		dprdgrp 19927	. . . 4 ⊢ (𝐺dom DProd 𝑆 → 𝐺 ∈ Grp)
12	1, 11	syl 17	. . 3 ⊢ (𝜑 → 𝐺 ∈ Grp)
13		eqid 2726	. . . 4 ⊢ (Base‘𝐺) = (Base‘𝐺)
14	13	dprdssv 19938	. . 3 ⊢ (𝐺 DProd (𝑆 ↾ 𝐷)) ⊆ (Base‘𝐺)
15		dprdcntz2.z	. . . 4 ⊢ 𝑍 = (Cntz‘𝐺)
16	13, 15	cntzsubg 19255	. . 3 ⊢ ((𝐺 ∈ Grp ∧ (𝐺 DProd (𝑆 ↾ 𝐷)) ⊆ (Base‘𝐺)) → (𝑍‘(𝐺 DProd (𝑆 ↾ 𝐷))) ∈ (SubGrp‘𝐺))
17	12, 14, 16	sylancl 585	. 2 ⊢ (𝜑 → (𝑍‘(𝐺 DProd (𝑆 ↾ 𝐷))) ∈ (SubGrp‘𝐺))
18		fvres 6904	. . . 4 ⊢ (𝑥 ∈ 𝐶 → ((𝑆 ↾ 𝐶)‘𝑥) = (𝑆‘𝑥))
19	18	adantl 481	. . 3 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → ((𝑆 ↾ 𝐶)‘𝑥) = (𝑆‘𝑥))
20		dprdcntz2.d	. . . . . . . 8 ⊢ (𝜑 → 𝐷 ⊆ 𝐼)
21	1, 2, 20	dprdres 19950	. . . . . . 7 ⊢ (𝜑 → (𝐺dom DProd (𝑆 ↾ 𝐷) ∧ (𝐺 DProd (𝑆 ↾ 𝐷)) ⊆ (𝐺 DProd 𝑆)))
22	21	simpld 494	. . . . . 6 ⊢ (𝜑 → 𝐺dom DProd (𝑆 ↾ 𝐷))
23	22	adantr 480	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → 𝐺dom DProd (𝑆 ↾ 𝐷))
24		dprdsubg 19946	. . . . 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 3977	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → 𝑥 ∈ 𝐼)
27	1, 2	dprdf2 19929	. . . . . 6 ⊢ (𝜑 → 𝑆:𝐼⟶(SubGrp‘𝐺))
28	27	ffvelcdmda 7080	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐼) → (𝑆‘𝑥) ∈ (SubGrp‘𝐺))
29	26, 28	syldan 590	. . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → (𝑆‘𝑥) ∈ (SubGrp‘𝐺))
30		dmres 5997	. . . . . . 7 ⊢ dom (𝑆 ↾ 𝐷) = (𝐷 ∩ dom 𝑆)
31	20, 2	sseqtrrd 4018	. . . . . . . 8 ⊢ (𝜑 → 𝐷 ⊆ dom 𝑆)
32		df-ss 3960	. . . . . . . 8 ⊢ (𝐷 ⊆ dom 𝑆 ↔ (𝐷 ∩ dom 𝑆) = 𝐷)
33	31, 32	sylib 217	. . . . . . 7 ⊢ (𝜑 → (𝐷 ∩ dom 𝑆) = 𝐷)
34	30, 33	eqtrid 2778	. . . . . 6 ⊢ (𝜑 → dom (𝑆 ↾ 𝐷) = 𝐷)
35	34	adantr 480	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → dom (𝑆 ↾ 𝐷) = 𝐷)
36	12	adantr 480	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → 𝐺 ∈ Grp)
37	13	subgss 19054	. . . . . . 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 19255	. . . . . 6 ⊢ ((𝐺 ∈ Grp ∧ (𝑆‘𝑥) ⊆ (Base‘𝐺)) → (𝑍‘(𝑆‘𝑥)) ∈ (SubGrp‘𝐺))
40	36, 38, 39	syl2anc 583	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → (𝑍‘(𝑆‘𝑥)) ∈ (SubGrp‘𝐺))
41		fvres 6904	. . . . . . 7 ⊢ (𝑦 ∈ 𝐷 → ((𝑆 ↾ 𝐷)‘𝑦) = (𝑆‘𝑦))
42	41	adantl 481	. . . . . 6 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝐶) ∧ 𝑦 ∈ 𝐷) → ((𝑆 ↾ 𝐷)‘𝑦) = (𝑆‘𝑦))
43	1	ad2antrr 723	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝐶) ∧ 𝑦 ∈ 𝐷) → 𝐺dom DProd 𝑆)
44	2	ad2antrr 723	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝐶) ∧ 𝑦 ∈ 𝐷) → dom 𝑆 = 𝐼)
45	20	adantr 480	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → 𝐷 ⊆ 𝐼)
46	45	sselda 3977	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝐶) ∧ 𝑦 ∈ 𝐷) → 𝑦 ∈ 𝐼)
47	26	adantr 480	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝐶) ∧ 𝑦 ∈ 𝐷) → 𝑥 ∈ 𝐼)
48		simpr 484	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝐶) ∧ 𝑦 ∈ 𝐷) → 𝑦 ∈ 𝐷)
49		noel 4325	. . . . . . . . . . . 12 ⊢ ¬ 𝑥 ∈ ∅
50		elin 3959	. . . . . . . . . . . . 13 ⊢ (𝑥 ∈ (𝐶 ∩ 𝐷) ↔ (𝑥 ∈ 𝐶 ∧ 𝑥 ∈ 𝐷))
51		dprdcntz2.i	. . . . . . . . . . . . . 14 ⊢ (𝜑 → (𝐶 ∩ 𝐷) = ∅)
52	51	eleq2d 2813	. . . . . . . . . . . . 13 ⊢ (𝜑 → (𝑥 ∈ (𝐶 ∩ 𝐷) ↔ 𝑥 ∈ ∅))
53	50, 52	bitr3id 285	. . . . . . . . . . . 12 ⊢ (𝜑 → ((𝑥 ∈ 𝐶 ∧ 𝑥 ∈ 𝐷) ↔ 𝑥 ∈ ∅))
54	49, 53	mtbiri 327	. . . . . . . . . . 11 ⊢ (𝜑 → ¬ (𝑥 ∈ 𝐶 ∧ 𝑥 ∈ 𝐷))
55		imnan 399	. . . . . . . . . . 11 ⊢ ((𝑥 ∈ 𝐶 → ¬ 𝑥 ∈ 𝐷) ↔ ¬ (𝑥 ∈ 𝐶 ∧ 𝑥 ∈ 𝐷))
56	54, 55	sylibr 233	. . . . . . . . . 10 ⊢ (𝜑 → (𝑥 ∈ 𝐶 → ¬ 𝑥 ∈ 𝐷))
57	56	imp 406	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → ¬ 𝑥 ∈ 𝐷)
58	57	adantr 480	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝐶) ∧ 𝑦 ∈ 𝐷) → ¬ 𝑥 ∈ 𝐷)
59		nelne2 3034	. . . . . . . 8 ⊢ ((𝑦 ∈ 𝐷 ∧ ¬ 𝑥 ∈ 𝐷) → 𝑦 ≠ 𝑥)
60	48, 58, 59	syl2anc 583	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝐶) ∧ 𝑦 ∈ 𝐷) → 𝑦 ≠ 𝑥)
61	43, 44, 46, 47, 60, 15	dprdcntz 19930	. . . . . 6 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝐶) ∧ 𝑦 ∈ 𝐷) → (𝑆‘𝑦) ⊆ (𝑍‘(𝑆‘𝑥)))
62	42, 61	eqsstrd 4015	. . . . 5 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝐶) ∧ 𝑦 ∈ 𝐷) → ((𝑆 ↾ 𝐷)‘𝑦) ⊆ (𝑍‘(𝑆‘𝑥)))
63	23, 35, 40, 62	dprdlub 19948	. . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → (𝐺 DProd (𝑆 ↾ 𝐷)) ⊆ (𝑍‘(𝑆‘𝑥)))
64	15, 25, 29, 63	cntzrecd 19598	. . 3 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → (𝑆‘𝑥) ⊆ (𝑍‘(𝐺 DProd (𝑆 ↾ 𝐷))))
65	19, 64	eqsstrd 4015	. 2 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → ((𝑆 ↾ 𝐶)‘𝑥) ⊆ (𝑍‘(𝐺 DProd (𝑆 ↾ 𝐷))))
66	5, 10, 17, 65	dprdlub 19948	1 ⊢ (𝜑 → (𝐺 DProd (𝑆 ↾ 𝐶)) ⊆ (𝑍‘(𝐺 DProd (𝑆 ↾ 𝐷))))

Colors of variables: wff setvar class

Syntax hints: ¬ wn 3 → wi 4 ∧ wa 395 = wceq 1533 ∈ wcel 2098 ≠ wne 2934 ∩ cin 3942 ⊆ wss 3943 ∅c0 4317 class class class wbr 5141 dom cdm 5669 ↾ cres 5671 ‘cfv 6537 (class class class)co 7405 Basecbs 17153 Grpcgrp 18863 SubGrpcsubg 19047 Cntzccntz 19231 DProd cdprd 19915

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1789 ax-4 1803 ax-5 1905 ax-6 1963 ax-7 2003 ax-8 2100 ax-9 2108 ax-10 2129 ax-11 2146 ax-12 2163 ax-ext 2697 ax-rep 5278 ax-sep 5292 ax-nul 5299 ax-pow 5356 ax-pr 5420 ax-un 7722 ax-cnex 11168 ax-resscn 11169 ax-1cn 11170 ax-icn 11171 ax-addcl 11172 ax-addrcl 11173 ax-mulcl 11174 ax-mulrcl 11175 ax-mulcom 11176 ax-addass 11177 ax-mulass 11178 ax-distr 11179 ax-i2m1 11180 ax-1ne0 11181 ax-1rid 11182 ax-rnegex 11183 ax-rrecex 11184 ax-cnre 11185 ax-pre-lttri 11186 ax-pre-lttrn 11187 ax-pre-ltadd 11188 ax-pre-mulgt0 11189

This theorem depends on definitions: df-bi 206 df-an 396 df-or 845 df-3or 1085 df-3an 1086 df-tru 1536 df-fal 1546 df-ex 1774 df-nf 1778 df-sb 2060 df-mo 2528 df-eu 2557 df-clab 2704 df-cleq 2718 df-clel 2804 df-nfc 2879 df-ne 2935 df-nel 3041 df-ral 3056 df-rex 3065 df-rmo 3370 df-reu 3371 df-rab 3427 df-v 3470 df-sbc 3773 df-csb 3889 df-dif 3946 df-un 3948 df-in 3950 df-ss 3960 df-pss 3962 df-nul 4318 df-if 4524 df-pw 4599 df-sn 4624 df-pr 4626 df-op 4630 df-uni 4903 df-int 4944 df-iun 4992 df-iin 4993 df-br 5142 df-opab 5204 df-mpt 5225 df-tr 5259 df-id 5567 df-eprel 5573 df-po 5581 df-so 5582 df-fr 5624 df-se 5625 df-we 5626 df-xp 5675 df-rel 5676 df-cnv 5677 df-co 5678 df-dm 5679 df-rn 5680 df-res 5681 df-ima 5682 df-pred 6294 df-ord 6361 df-on 6362 df-lim 6363 df-suc 6364 df-iota 6489 df-fun 6539 df-fn 6540 df-f 6541 df-f1 6542 df-fo 6543 df-f1o 6544 df-fv 6545 df-isom 6546 df-riota 7361 df-ov 7408 df-oprab 7409 df-mpo 7410 df-of 7667 df-om 7853 df-1st 7974 df-2nd 7975 df-supp 8147 df-tpos 8212 df-frecs 8267 df-wrecs 8298 df-recs 8372 df-rdg 8411 df-1o 8467 df-er 8705 df-map 8824 df-ixp 8894 df-en 8942 df-dom 8943 df-sdom 8944 df-fin 8945 df-fsupp 9364 df-oi 9507 df-card 9936 df-pnf 11254 df-mnf 11255 df-xr 11256 df-ltxr 11257 df-le 11258 df-sub 11450 df-neg 11451 df-nn 12217 df-2 12279 df-n0 12477 df-z 12563 df-uz 12827 df-fz 13491 df-fzo 13634 df-seq 13973 df-hash 14296 df-sets 17106 df-slot 17124 df-ndx 17136 df-base 17154 df-ress 17183 df-plusg 17219 df-0g 17396 df-gsum 17397 df-mre 17539 df-mrc 17540 df-acs 17542 df-mgm 18573 df-sgrp 18652 df-mnd 18668 df-mhm 18713 df-submnd 18714 df-grp 18866 df-minusg 18867 df-sbg 18868 df-mulg 18996 df-subg 19050 df-ghm 19139 df-gim 19184 df-cntz 19233 df-oppg 19262 df-cmn 19702 df-dprd 19917

This theorem is referenced by: dprd2da 19964 dmdprdsplit 19969 ablfac1eulem 19994 ablfac1eu 19995

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