Theorem prdsmgp 19354

Description: The multiplicative monoid of a product is the product of the multiplicative monoids of the factors. (Contributed by Mario Carneiro, 11-Mar-2015.)

Hypotheses

Ref	Expression
prdsmgp.y	⊢ 𝑌 = (𝑆Xs𝑅)
prdsmgp.m	⊢ 𝑀 = (mulGrp‘𝑌)
prdsmgp.z	⊢ 𝑍 = (𝑆Xs(mulGrp ∘ 𝑅))
prdsmgp.i	⊢ (𝜑 → 𝐼 ∈ 𝑉)
prdsmgp.s	⊢ (𝜑 → 𝑆 ∈ 𝑊)
prdsmgp.r	⊢ (𝜑 → 𝑅 Fn 𝐼)

Assertion

Ref	Expression
prdsmgp	⊢ (𝜑 → ((Base‘𝑀) = (Base‘𝑍) ∧ (+g‘𝑀) = (+g‘𝑍)))

Proof of Theorem prdsmgp

Dummy variables 𝑥 𝑦 𝑧 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		eqid 2821	. . . . . 6 ⊢ (mulGrp‘(𝑅‘𝑥)) = (mulGrp‘(𝑅‘𝑥))
2		eqid 2821	. . . . . 6 ⊢ (Base‘(𝑅‘𝑥)) = (Base‘(𝑅‘𝑥))
3	1, 2	mgpbas 19239	. . . . 5 ⊢ (Base‘(𝑅‘𝑥)) = (Base‘(mulGrp‘(𝑅‘𝑥)))
4		prdsmgp.r	. . . . . . . 8 ⊢ (𝜑 → 𝑅 Fn 𝐼)
5		fvco2 6752	. . . . . . . 8 ⊢ ((𝑅 Fn 𝐼 ∧ 𝑥 ∈ 𝐼) → ((mulGrp ∘ 𝑅)‘𝑥) = (mulGrp‘(𝑅‘𝑥)))
6	4, 5	sylan 582	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐼) → ((mulGrp ∘ 𝑅)‘𝑥) = (mulGrp‘(𝑅‘𝑥)))
7	6	eqcomd 2827	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐼) → (mulGrp‘(𝑅‘𝑥)) = ((mulGrp ∘ 𝑅)‘𝑥))
8	7	fveq2d 6668	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐼) → (Base‘(mulGrp‘(𝑅‘𝑥))) = (Base‘((mulGrp ∘ 𝑅)‘𝑥)))
9	3, 8	syl5eq 2868	. . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐼) → (Base‘(𝑅‘𝑥)) = (Base‘((mulGrp ∘ 𝑅)‘𝑥)))
10	9	ixpeq2dva 8470	. . 3 ⊢ (𝜑 → X𝑥 ∈ 𝐼 (Base‘(𝑅‘𝑥)) = X𝑥 ∈ 𝐼 (Base‘((mulGrp ∘ 𝑅)‘𝑥)))
11		prdsmgp.y	. . . 4 ⊢ 𝑌 = (𝑆Xs𝑅)
12		prdsmgp.m	. . . . . 6 ⊢ 𝑀 = (mulGrp‘𝑌)
13		eqid 2821	. . . . . 6 ⊢ (Base‘𝑌) = (Base‘𝑌)
14	12, 13	mgpbas 19239	. . . . 5 ⊢ (Base‘𝑌) = (Base‘𝑀)
15	14	eqcomi 2830	. . . 4 ⊢ (Base‘𝑀) = (Base‘𝑌)
16		prdsmgp.s	. . . 4 ⊢ (𝜑 → 𝑆 ∈ 𝑊)
17		prdsmgp.i	. . . 4 ⊢ (𝜑 → 𝐼 ∈ 𝑉)
18	11, 15, 16, 17, 4	prdsbas2 16736	. . 3 ⊢ (𝜑 → (Base‘𝑀) = X𝑥 ∈ 𝐼 (Base‘(𝑅‘𝑥)))
19		prdsmgp.z	. . . 4 ⊢ 𝑍 = (𝑆Xs(mulGrp ∘ 𝑅))
20		eqid 2821	. . . 4 ⊢ (Base‘𝑍) = (Base‘𝑍)
21		fnmgp 19235	. . . . 5 ⊢ mulGrp Fn V
22		ssv 3990	. . . . . 6 ⊢ ran 𝑅 ⊆ V
23	22	a1i 11	. . . . 5 ⊢ (𝜑 → ran 𝑅 ⊆ V)
24		fnco 6459	. . . . 5 ⊢ ((mulGrp Fn V ∧ 𝑅 Fn 𝐼 ∧ ran 𝑅 ⊆ V) → (mulGrp ∘ 𝑅) Fn 𝐼)
25	21, 4, 23, 24	mp3an2i 1462	. . . 4 ⊢ (𝜑 → (mulGrp ∘ 𝑅) Fn 𝐼)
26	19, 20, 16, 17, 25	prdsbas2 16736	. . 3 ⊢ (𝜑 → (Base‘𝑍) = X𝑥 ∈ 𝐼 (Base‘((mulGrp ∘ 𝑅)‘𝑥)))
27	10, 18, 26	3eqtr4d 2866	. 2 ⊢ (𝜑 → (Base‘𝑀) = (Base‘𝑍))
28		eqid 2821	. . . 4 ⊢ (.r‘𝑌) = (.r‘𝑌)
29	12, 28	mgpplusg 19237	. . 3 ⊢ (.r‘𝑌) = (+g‘𝑀)
30		eqid 2821	. . . . . . . . 9 ⊢ (mulGrp‘(𝑅‘𝑧)) = (mulGrp‘(𝑅‘𝑧))
31		eqid 2821	. . . . . . . . 9 ⊢ (.r‘(𝑅‘𝑧)) = (.r‘(𝑅‘𝑧))
32	30, 31	mgpplusg 19237	. . . . . . . 8 ⊢ (.r‘(𝑅‘𝑧)) = (+g‘(mulGrp‘(𝑅‘𝑧)))
33		fvco2 6752	. . . . . . . . . . 11 ⊢ ((𝑅 Fn 𝐼 ∧ 𝑧 ∈ 𝐼) → ((mulGrp ∘ 𝑅)‘𝑧) = (mulGrp‘(𝑅‘𝑧)))
34	4, 33	sylan 582	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑧 ∈ 𝐼) → ((mulGrp ∘ 𝑅)‘𝑧) = (mulGrp‘(𝑅‘𝑧)))
35	34	eqcomd 2827	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑧 ∈ 𝐼) → (mulGrp‘(𝑅‘𝑧)) = ((mulGrp ∘ 𝑅)‘𝑧))
36	35	fveq2d 6668	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑧 ∈ 𝐼) → (+g‘(mulGrp‘(𝑅‘𝑧))) = (+g‘((mulGrp ∘ 𝑅)‘𝑧)))
37	32, 36	syl5eq 2868	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑧 ∈ 𝐼) → (.r‘(𝑅‘𝑧)) = (+g‘((mulGrp ∘ 𝑅)‘𝑧)))
38	37	oveqd 7167	. . . . . 6 ⊢ ((𝜑 ∧ 𝑧 ∈ 𝐼) → ((𝑥‘𝑧)(.r‘(𝑅‘𝑧))(𝑦‘𝑧)) = ((𝑥‘𝑧)(+g‘((mulGrp ∘ 𝑅)‘𝑧))(𝑦‘𝑧)))
39	38	mpteq2dva 5153	. . . . 5 ⊢ (𝜑 → (𝑧 ∈ 𝐼 ↦ ((𝑥‘𝑧)(.r‘(𝑅‘𝑧))(𝑦‘𝑧))) = (𝑧 ∈ 𝐼 ↦ ((𝑥‘𝑧)(+g‘((mulGrp ∘ 𝑅)‘𝑧))(𝑦‘𝑧))))
40	27, 27, 39	mpoeq123dv 7223	. . . 4 ⊢ (𝜑 → (𝑥 ∈ (Base‘𝑀), 𝑦 ∈ (Base‘𝑀) ↦ (𝑧 ∈ 𝐼 ↦ ((𝑥‘𝑧)(.r‘(𝑅‘𝑧))(𝑦‘𝑧)))) = (𝑥 ∈ (Base‘𝑍), 𝑦 ∈ (Base‘𝑍) ↦ (𝑧 ∈ 𝐼 ↦ ((𝑥‘𝑧)(+g‘((mulGrp ∘ 𝑅)‘𝑧))(𝑦‘𝑧)))))
41		fnex 6974	. . . . . 6 ⊢ ((𝑅 Fn 𝐼 ∧ 𝐼 ∈ 𝑉) → 𝑅 ∈ V)
42	4, 17, 41	syl2anc 586	. . . . 5 ⊢ (𝜑 → 𝑅 ∈ V)
43		fndm 6449	. . . . . 6 ⊢ (𝑅 Fn 𝐼 → dom 𝑅 = 𝐼)
44	4, 43	syl 17	. . . . 5 ⊢ (𝜑 → dom 𝑅 = 𝐼)
45	11, 16, 42, 15, 44, 28	prdsmulr 16726	. . . 4 ⊢ (𝜑 → (.r‘𝑌) = (𝑥 ∈ (Base‘𝑀), 𝑦 ∈ (Base‘𝑀) ↦ (𝑧 ∈ 𝐼 ↦ ((𝑥‘𝑧)(.r‘(𝑅‘𝑧))(𝑦‘𝑧)))))
46		fnex 6974	. . . . . 6 ⊢ (((mulGrp ∘ 𝑅) Fn 𝐼 ∧ 𝐼 ∈ 𝑉) → (mulGrp ∘ 𝑅) ∈ V)
47	25, 17, 46	syl2anc 586	. . . . 5 ⊢ (𝜑 → (mulGrp ∘ 𝑅) ∈ V)
48		fndm 6449	. . . . . 6 ⊢ ((mulGrp ∘ 𝑅) Fn 𝐼 → dom (mulGrp ∘ 𝑅) = 𝐼)
49	25, 48	syl 17	. . . . 5 ⊢ (𝜑 → dom (mulGrp ∘ 𝑅) = 𝐼)
50		eqid 2821	. . . . 5 ⊢ (+g‘𝑍) = (+g‘𝑍)
51	19, 16, 47, 20, 49, 50	prdsplusg 16725	. . . 4 ⊢ (𝜑 → (+g‘𝑍) = (𝑥 ∈ (Base‘𝑍), 𝑦 ∈ (Base‘𝑍) ↦ (𝑧 ∈ 𝐼 ↦ ((𝑥‘𝑧)(+g‘((mulGrp ∘ 𝑅)‘𝑧))(𝑦‘𝑧)))))
52	40, 45, 51	3eqtr4d 2866	. . 3 ⊢ (𝜑 → (.r‘𝑌) = (+g‘𝑍))
53	29, 52	syl5eqr 2870	. 2 ⊢ (𝜑 → (+g‘𝑀) = (+g‘𝑍))
54	27, 53	jca 514	1 ⊢ (𝜑 → ((Base‘𝑀) = (Base‘𝑍) ∧ (+g‘𝑀) = (+g‘𝑍)))

Syntax hints:   → wi 4   ∧ wa 398   = wceq 1533   ∈ wcel 2110  Vcvv 3494   ⊆ wss 3935   ↦ cmpt 5138  dom cdm 5549  ran crn 5550   ∘ ccom 5553   Fn wfn 6344  ‘cfv 6349  (class class class)co 7150   ∈ cmpo 7152  Xcixp 8455  Basecbs 16477  +_gcplusg 16559  ._rcmulr 16560  X_scprds 16713  mulGrpcmgp 19233

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1792  ax-4 1806  ax-5 1907  ax-6 1966  ax-7 2011  ax-8 2112  ax-9 2120  ax-10 2141  ax-11 2157  ax-12 2173  ax-ext 2793  ax-rep 5182  ax-sep 5195  ax-nul 5202  ax-pow 5258  ax-pr 5321  ax-un 7455  ax-cnex 10587  ax-resscn 10588  ax-1cn 10589  ax-icn 10590  ax-addcl 10591  ax-addrcl 10592  ax-mulcl 10593  ax-mulrcl 10594  ax-mulcom 10595  ax-addass 10596  ax-mulass 10597  ax-distr 10598  ax-i2m1 10599  ax-1ne0 10600  ax-1rid 10601  ax-rnegex 10602  ax-rrecex 10603  ax-cnre 10604  ax-pre-lttri 10605  ax-pre-lttrn 10606  ax-pre-ltadd 10607  ax-pre-mulgt0 10608

This theorem depends on definitions:  df-bi 209  df-an 399  df-or 844  df-3or 1084  df-3an 1085  df-tru 1536  df-ex 1777  df-nf 1781  df-sb 2066  df-mo 2618  df-eu 2650  df-clab 2800  df-cleq 2814  df-clel 2893  df-nfc 2963  df-ne 3017  df-nel 3124  df-ral 3143  df-rex 3144  df-reu 3145  df-rab 3147  df-v 3496  df-sbc 3772  df-csb 3883  df-dif 3938  df-un 3940  df-in 3942  df-ss 3951  df-pss 3953  df-nul 4291  df-if 4467  df-pw 4540  df-sn 4561  df-pr 4563  df-tp 4565  df-op 4567  df-uni 4832  df-int 4869  df-iun 4913  df-br 5059  df-opab 5121  df-mpt 5139  df-tr 5165  df-id 5454  df-eprel 5459  df-po 5468  df-so 5469  df-fr 5508  df-we 5510  df-xp 5555  df-rel 5556  df-cnv 5557  df-co 5558  df-dm 5559  df-rn 5560  df-res 5561  df-ima 5562  df-pred 6142  df-ord 6188  df-on 6189  df-lim 6190  df-suc 6191  df-iota 6308  df-fun 6351  df-fn 6352  df-f 6353  df-f1 6354  df-fo 6355  df-f1o 6356  df-fv 6357  df-riota 7108  df-ov 7153  df-oprab 7154  df-mpo 7155  df-om 7575  df-1st 7683  df-2nd 7684  df-wrecs 7941  df-recs 8002  df-rdg 8040  df-1o 8096  df-oadd 8100  df-er 8283  df-map 8402  df-ixp 8456  df-en 8504  df-dom 8505  df-sdom 8506  df-fin 8507  df-sup 8900  df-pnf 10671  df-mnf 10672  df-xr 10673  df-ltxr 10674  df-le 10675  df-sub 10866  df-neg 10867  df-nn 11633  df-2 11694  df-3 11695  df-4 11696  df-5 11697  df-6 11698  df-7 11699  df-8 11700  df-9 11701  df-n0 11892  df-z 11976  df-dec 12093  df-uz 12238  df-fz 12887  df-struct 16479  df-ndx 16480  df-slot 16481  df-base 16483  df-sets 16484  df-plusg 16572  df-mulr 16573  df-sca 16575  df-vsca 16576  df-ip 16577  df-tset 16578  df-ple 16579  df-ds 16581  df-hom 16583  df-cco 16584  df-prds 16715  df-mgp 19234

This theorem is referenced by:  prdsringd  19356  prdscrngd  19357  prds1  19358  pwsmgp  19362