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Theorem dprdcntz2 19999

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 19989	. . 3 ⊢ (𝜑 → (𝐺dom DProd (𝑆 ↾ 𝐶) ∧ (𝐺 DProd (𝑆 ↾ 𝐶)) ⊆ (𝐺 DProd 𝑆)))
5	4	simpld 493	. 2 ⊢ (𝜑 → 𝐺dom DProd (𝑆 ↾ 𝐶))
6		dmres 6011	. . 3 ⊢ dom (𝑆 ↾ 𝐶) = (𝐶 ∩ dom 𝑆)
7	3, 2	sseqtrrd 4014	. . . 4 ⊢ (𝜑 → 𝐶 ⊆ dom 𝑆)
8		dfss2 3957	. . . 4 ⊢ (𝐶 ⊆ dom 𝑆 ↔ (𝐶 ∩ dom 𝑆) = 𝐶)
9	7, 8	sylib 217	. . 3 ⊢ (𝜑 → (𝐶 ∩ dom 𝑆) = 𝐶)
10	6, 9	eqtrid 2777	. 2 ⊢ (𝜑 → dom (𝑆 ↾ 𝐶) = 𝐶)
11		dprdgrp 19966	. . . 4 ⊢ (𝐺dom DProd 𝑆 → 𝐺 ∈ Grp)
12	1, 11	syl 17	. . 3 ⊢ (𝜑 → 𝐺 ∈ Grp)
13		eqid 2725	. . . 4 ⊢ (Base‘𝐺) = (Base‘𝐺)
14	13	dprdssv 19977	. . 3 ⊢ (𝐺 DProd (𝑆 ↾ 𝐷)) ⊆ (Base‘𝐺)
15		dprdcntz2.z	. . . 4 ⊢ 𝑍 = (Cntz‘𝐺)
16	13, 15	cntzsubg 19294	. . 3 ⊢ ((𝐺 ∈ Grp ∧ (𝐺 DProd (𝑆 ↾ 𝐷)) ⊆ (Base‘𝐺)) → (𝑍‘(𝐺 DProd (𝑆 ↾ 𝐷))) ∈ (SubGrp‘𝐺))
17	12, 14, 16	sylancl 584	. 2 ⊢ (𝜑 → (𝑍‘(𝐺 DProd (𝑆 ↾ 𝐷))) ∈ (SubGrp‘𝐺))
18		fvres 6911	. . . 4 ⊢ (𝑥 ∈ 𝐶 → ((𝑆 ↾ 𝐶)‘𝑥) = (𝑆‘𝑥))
19	18	adantl 480	. . 3 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → ((𝑆 ↾ 𝐶)‘𝑥) = (𝑆‘𝑥))
20		dprdcntz2.d	. . . . . . . 8 ⊢ (𝜑 → 𝐷 ⊆ 𝐼)
21	1, 2, 20	dprdres 19989	. . . . . . 7 ⊢ (𝜑 → (𝐺dom DProd (𝑆 ↾ 𝐷) ∧ (𝐺 DProd (𝑆 ↾ 𝐷)) ⊆ (𝐺 DProd 𝑆)))
22	21	simpld 493	. . . . . 6 ⊢ (𝜑 → 𝐺dom DProd (𝑆 ↾ 𝐷))
23	22	adantr 479	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → 𝐺dom DProd (𝑆 ↾ 𝐷))
24		dprdsubg 19985	. . . . 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 3972	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → 𝑥 ∈ 𝐼)
27	1, 2	dprdf2 19968	. . . . . 6 ⊢ (𝜑 → 𝑆:𝐼⟶(SubGrp‘𝐺))
28	27	ffvelcdmda 7089	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐼) → (𝑆‘𝑥) ∈ (SubGrp‘𝐺))
29	26, 28	syldan 589	. . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → (𝑆‘𝑥) ∈ (SubGrp‘𝐺))
30		dmres 6011	. . . . . . 7 ⊢ dom (𝑆 ↾ 𝐷) = (𝐷 ∩ dom 𝑆)
31	20, 2	sseqtrrd 4014	. . . . . . . 8 ⊢ (𝜑 → 𝐷 ⊆ dom 𝑆)
32		dfss2 3957	. . . . . . . 8 ⊢ (𝐷 ⊆ dom 𝑆 ↔ (𝐷 ∩ dom 𝑆) = 𝐷)
33	31, 32	sylib 217	. . . . . . 7 ⊢ (𝜑 → (𝐷 ∩ dom 𝑆) = 𝐷)
34	30, 33	eqtrid 2777	. . . . . 6 ⊢ (𝜑 → dom (𝑆 ↾ 𝐷) = 𝐷)
35	34	adantr 479	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → dom (𝑆 ↾ 𝐷) = 𝐷)
36	12	adantr 479	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → 𝐺 ∈ Grp)
37	13	subgss 19086	. . . . . . 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 19294	. . . . . 6 ⊢ ((𝐺 ∈ Grp ∧ (𝑆‘𝑥) ⊆ (Base‘𝐺)) → (𝑍‘(𝑆‘𝑥)) ∈ (SubGrp‘𝐺))
40	36, 38, 39	syl2anc 582	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → (𝑍‘(𝑆‘𝑥)) ∈ (SubGrp‘𝐺))
41		fvres 6911	. . . . . . 7 ⊢ (𝑦 ∈ 𝐷 → ((𝑆 ↾ 𝐷)‘𝑦) = (𝑆‘𝑦))
42	41	adantl 480	. . . . . 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 479	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → 𝐷 ⊆ 𝐼)
46	45	sselda 3972	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝐶) ∧ 𝑦 ∈ 𝐷) → 𝑦 ∈ 𝐼)
47	26	adantr 479	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝐶) ∧ 𝑦 ∈ 𝐷) → 𝑥 ∈ 𝐼)
48		simpr 483	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝐶) ∧ 𝑦 ∈ 𝐷) → 𝑦 ∈ 𝐷)
49		noel 4326	. . . . . . . . . . . 12 ⊢ ¬ 𝑥 ∈ ∅
50		elin 3955	. . . . . . . . . . . . 13 ⊢ (𝑥 ∈ (𝐶 ∩ 𝐷) ↔ (𝑥 ∈ 𝐶 ∧ 𝑥 ∈ 𝐷))
51		dprdcntz2.i	. . . . . . . . . . . . . 14 ⊢ (𝜑 → (𝐶 ∩ 𝐷) = ∅)
52	51	eleq2d 2811	. . . . . . . . . . . . 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 398	. . . . . . . . . . 11 ⊢ ((𝑥 ∈ 𝐶 → ¬ 𝑥 ∈ 𝐷) ↔ ¬ (𝑥 ∈ 𝐶 ∧ 𝑥 ∈ 𝐷))
56	54, 55	sylibr 233	. . . . . . . . . 10 ⊢ (𝜑 → (𝑥 ∈ 𝐶 → ¬ 𝑥 ∈ 𝐷))
57	56	imp 405	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → ¬ 𝑥 ∈ 𝐷)
58	57	adantr 479	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝐶) ∧ 𝑦 ∈ 𝐷) → ¬ 𝑥 ∈ 𝐷)
59		nelne2 3030	. . . . . . . 8 ⊢ ((𝑦 ∈ 𝐷 ∧ ¬ 𝑥 ∈ 𝐷) → 𝑦 ≠ 𝑥)
60	48, 58, 59	syl2anc 582	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝐶) ∧ 𝑦 ∈ 𝐷) → 𝑦 ≠ 𝑥)
61	43, 44, 46, 47, 60, 15	dprdcntz 19969	. . . . . 6 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝐶) ∧ 𝑦 ∈ 𝐷) → (𝑆‘𝑦) ⊆ (𝑍‘(𝑆‘𝑥)))
62	42, 61	eqsstrd 4011	. . . . 5 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝐶) ∧ 𝑦 ∈ 𝐷) → ((𝑆 ↾ 𝐷)‘𝑦) ⊆ (𝑍‘(𝑆‘𝑥)))
63	23, 35, 40, 62	dprdlub 19987	. . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → (𝐺 DProd (𝑆 ↾ 𝐷)) ⊆ (𝑍‘(𝑆‘𝑥)))
64	15, 25, 29, 63	cntzrecd 19637	. . 3 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → (𝑆‘𝑥) ⊆ (𝑍‘(𝐺 DProd (𝑆 ↾ 𝐷))))
65	19, 64	eqsstrd 4011	. 2 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → ((𝑆 ↾ 𝐶)‘𝑥) ⊆ (𝑍‘(𝐺 DProd (𝑆 ↾ 𝐷))))
66	5, 10, 17, 65	dprdlub 19987	1 ⊢ (𝜑 → (𝐺 DProd (𝑆 ↾ 𝐶)) ⊆ (𝑍‘(𝐺 DProd (𝑆 ↾ 𝐷))))

Colors of variables: wff setvar class

Syntax hints: ¬ wn 3 → wi 4 ∧ wa 394 = wceq 1533 ∈ wcel 2098 ≠ wne 2930 ∩ cin 3938 ⊆ wss 3939 ∅c0 4318 class class class wbr 5143 dom cdm 5672 ↾ cres 5674 ‘cfv 6543 (class class class)co 7416 Basecbs 17179 Grpcgrp 18894 SubGrpcsubg 19079 Cntzccntz 19270 DProd cdprd 19954

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 2166 ax-ext 2696 ax-rep 5280 ax-sep 5294 ax-nul 5301 ax-pow 5359 ax-pr 5423 ax-un 7738 ax-cnex 11194 ax-resscn 11195 ax-1cn 11196 ax-icn 11197 ax-addcl 11198 ax-addrcl 11199 ax-mulcl 11200 ax-mulrcl 11201 ax-mulcom 11202 ax-addass 11203 ax-mulass 11204 ax-distr 11205 ax-i2m1 11206 ax-1ne0 11207 ax-1rid 11208 ax-rnegex 11209 ax-rrecex 11210 ax-cnre 11211 ax-pre-lttri 11212 ax-pre-lttrn 11213 ax-pre-ltadd 11214 ax-pre-mulgt0 11215

This theorem depends on definitions: df-bi 206 df-an 395 df-or 846 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 2703 df-cleq 2717 df-clel 2802 df-nfc 2877 df-ne 2931 df-nel 3037 df-ral 3052 df-rex 3061 df-rmo 3364 df-reu 3365 df-rab 3420 df-v 3465 df-sbc 3769 df-csb 3885 df-dif 3942 df-un 3944 df-in 3946 df-ss 3956 df-pss 3959 df-nul 4319 df-if 4525 df-pw 4600 df-sn 4625 df-pr 4627 df-op 4631 df-uni 4904 df-int 4945 df-iun 4993 df-iin 4994 df-br 5144 df-opab 5206 df-mpt 5227 df-tr 5261 df-id 5570 df-eprel 5576 df-po 5584 df-so 5585 df-fr 5627 df-se 5628 df-we 5629 df-xp 5678 df-rel 5679 df-cnv 5680 df-co 5681 df-dm 5682 df-rn 5683 df-res 5684 df-ima 5685 df-pred 6300 df-ord 6367 df-on 6368 df-lim 6369 df-suc 6370 df-iota 6495 df-fun 6545 df-fn 6546 df-f 6547 df-f1 6548 df-fo 6549 df-f1o 6550 df-fv 6551 df-isom 6552 df-riota 7372 df-ov 7419 df-oprab 7420 df-mpo 7421 df-of 7682 df-om 7869 df-1st 7991 df-2nd 7992 df-supp 8164 df-tpos 8230 df-frecs 8285 df-wrecs 8316 df-recs 8390 df-rdg 8429 df-1o 8485 df-er 8723 df-map 8845 df-ixp 8915 df-en 8963 df-dom 8964 df-sdom 8965 df-fin 8966 df-fsupp 9386 df-oi 9533 df-card 9962 df-pnf 11280 df-mnf 11281 df-xr 11282 df-ltxr 11283 df-le 11284 df-sub 11476 df-neg 11477 df-nn 12243 df-2 12305 df-n0 12503 df-z 12589 df-uz 12853 df-fz 13517 df-fzo 13660 df-seq 13999 df-hash 14322 df-sets 17132 df-slot 17150 df-ndx 17162 df-base 17180 df-ress 17209 df-plusg 17245 df-0g 17422 df-gsum 17423 df-mre 17565 df-mrc 17566 df-acs 17568 df-mgm 18599 df-sgrp 18678 df-mnd 18694 df-mhm 18739 df-submnd 18740 df-grp 18897 df-minusg 18898 df-sbg 18899 df-mulg 19028 df-subg 19082 df-ghm 19172 df-gim 19217 df-cntz 19272 df-oppg 19301 df-cmn 19741 df-dprd 19956

This theorem is referenced by: dprd2da 20003 dmdprdsplit 20008 ablfac1eulem 20033 ablfac1eu 20034

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