Theorem prdsmgp 20036

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 2729	. . . . . 6 ⊢ (mulGrp‘(𝑅‘𝑥)) = (mulGrp‘(𝑅‘𝑥))
2		eqid 2729	. . . . . 6 ⊢ (Base‘(𝑅‘𝑥)) = (Base‘(𝑅‘𝑥))
3	1, 2	mgpbas 20030	. . . . 5 ⊢ (Base‘(𝑅‘𝑥)) = (Base‘(mulGrp‘(𝑅‘𝑥)))
4		prdsmgp.r	. . . . . . . 8 ⊢ (𝜑 → 𝑅 Fn 𝐼)
5		fvco2 6920	. . . . . . . 8 ⊢ ((𝑅 Fn 𝐼 ∧ 𝑥 ∈ 𝐼) → ((mulGrp ∘ 𝑅)‘𝑥) = (mulGrp‘(𝑅‘𝑥)))
6	4, 5	sylan 580	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐼) → ((mulGrp ∘ 𝑅)‘𝑥) = (mulGrp‘(𝑅‘𝑥)))
7	6	eqcomd 2735	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐼) → (mulGrp‘(𝑅‘𝑥)) = ((mulGrp ∘ 𝑅)‘𝑥))
8	7	fveq2d 6826	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐼) → (Base‘(mulGrp‘(𝑅‘𝑥))) = (Base‘((mulGrp ∘ 𝑅)‘𝑥)))
9	3, 8	eqtrid 2776	. . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐼) → (Base‘(𝑅‘𝑥)) = (Base‘((mulGrp ∘ 𝑅)‘𝑥)))
10	9	ixpeq2dva 8839	. . 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 2729	. . . . . 6 ⊢ (Base‘𝑌) = (Base‘𝑌)
14	12, 13	mgpbas 20030	. . . . 5 ⊢ (Base‘𝑌) = (Base‘𝑀)
15	14	eqcomi 2738	. . . 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 17373	. . 3 ⊢ (𝜑 → (Base‘𝑀) = X𝑥 ∈ 𝐼 (Base‘(𝑅‘𝑥)))
19		prdsmgp.z	. . . 4 ⊢ 𝑍 = (𝑆Xs(mulGrp ∘ 𝑅))
20		eqid 2729	. . . 4 ⊢ (Base‘𝑍) = (Base‘𝑍)
21		fnmgp 20027	. . . . 5 ⊢ mulGrp Fn V
22		ssv 3960	. . . . . 6 ⊢ ran 𝑅 ⊆ V
23	22	a1i 11	. . . . 5 ⊢ (𝜑 → ran 𝑅 ⊆ V)
24		fnco 6600	. . . . 5 ⊢ ((mulGrp Fn V ∧ 𝑅 Fn 𝐼 ∧ ran 𝑅 ⊆ V) → (mulGrp ∘ 𝑅) Fn 𝐼)
25	21, 4, 23, 24	mp3an2i 1468	. . . 4 ⊢ (𝜑 → (mulGrp ∘ 𝑅) Fn 𝐼)
26	19, 20, 16, 17, 25	prdsbas2 17373	. . 3 ⊢ (𝜑 → (Base‘𝑍) = X𝑥 ∈ 𝐼 (Base‘((mulGrp ∘ 𝑅)‘𝑥)))
27	10, 18, 26	3eqtr4d 2774	. 2 ⊢ (𝜑 → (Base‘𝑀) = (Base‘𝑍))
28		eqid 2729	. . . 4 ⊢ (.r‘𝑌) = (.r‘𝑌)
29	12, 28	mgpplusg 20029	. . 3 ⊢ (.r‘𝑌) = (+g‘𝑀)
30		eqid 2729	. . . . . . . . 9 ⊢ (mulGrp‘(𝑅‘𝑧)) = (mulGrp‘(𝑅‘𝑧))
31		eqid 2729	. . . . . . . . 9 ⊢ (.r‘(𝑅‘𝑧)) = (.r‘(𝑅‘𝑧))
32	30, 31	mgpplusg 20029	. . . . . . . 8 ⊢ (.r‘(𝑅‘𝑧)) = (+g‘(mulGrp‘(𝑅‘𝑧)))
33		fvco2 6920	. . . . . . . . . . 11 ⊢ ((𝑅 Fn 𝐼 ∧ 𝑧 ∈ 𝐼) → ((mulGrp ∘ 𝑅)‘𝑧) = (mulGrp‘(𝑅‘𝑧)))
34	4, 33	sylan 580	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑧 ∈ 𝐼) → ((mulGrp ∘ 𝑅)‘𝑧) = (mulGrp‘(𝑅‘𝑧)))
35	34	eqcomd 2735	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑧 ∈ 𝐼) → (mulGrp‘(𝑅‘𝑧)) = ((mulGrp ∘ 𝑅)‘𝑧))
36	35	fveq2d 6826	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑧 ∈ 𝐼) → (+g‘(mulGrp‘(𝑅‘𝑧))) = (+g‘((mulGrp ∘ 𝑅)‘𝑧)))
37	32, 36	eqtrid 2776	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑧 ∈ 𝐼) → (.r‘(𝑅‘𝑧)) = (+g‘((mulGrp ∘ 𝑅)‘𝑧)))
38	37	oveqd 7366	. . . . . 6 ⊢ ((𝜑 ∧ 𝑧 ∈ 𝐼) → ((𝑥‘𝑧)(.r‘(𝑅‘𝑧))(𝑦‘𝑧)) = ((𝑥‘𝑧)(+g‘((mulGrp ∘ 𝑅)‘𝑧))(𝑦‘𝑧)))
39	38	mpteq2dva 5185	. . . . 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 7424	. . . 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 7153	. . . . . 6 ⊢ ((𝑅 Fn 𝐼 ∧ 𝐼 ∈ 𝑉) → 𝑅 ∈ V)
42	4, 17, 41	syl2anc 584	. . . . 5 ⊢ (𝜑 → 𝑅 ∈ V)
43	4	fndmd 6587	. . . . 5 ⊢ (𝜑 → dom 𝑅 = 𝐼)
44	11, 16, 42, 15, 43, 28	prdsmulr 17363	. . . 4 ⊢ (𝜑 → (.r‘𝑌) = (𝑥 ∈ (Base‘𝑀), 𝑦 ∈ (Base‘𝑀) ↦ (𝑧 ∈ 𝐼 ↦ ((𝑥‘𝑧)(.r‘(𝑅‘𝑧))(𝑦‘𝑧)))))
45		fnex 7153	. . . . . 6 ⊢ (((mulGrp ∘ 𝑅) Fn 𝐼 ∧ 𝐼 ∈ 𝑉) → (mulGrp ∘ 𝑅) ∈ V)
46	25, 17, 45	syl2anc 584	. . . . 5 ⊢ (𝜑 → (mulGrp ∘ 𝑅) ∈ V)
47	25	fndmd 6587	. . . . 5 ⊢ (𝜑 → dom (mulGrp ∘ 𝑅) = 𝐼)
48		eqid 2729	. . . . 5 ⊢ (+g‘𝑍) = (+g‘𝑍)
49	19, 16, 46, 20, 47, 48	prdsplusg 17362	. . . 4 ⊢ (𝜑 → (+g‘𝑍) = (𝑥 ∈ (Base‘𝑍), 𝑦 ∈ (Base‘𝑍) ↦ (𝑧 ∈ 𝐼 ↦ ((𝑥‘𝑧)(+g‘((mulGrp ∘ 𝑅)‘𝑧))(𝑦‘𝑧)))))
50	40, 44, 49	3eqtr4d 2774	. . 3 ⊢ (𝜑 → (.r‘𝑌) = (+g‘𝑍))
51	29, 50	eqtr3id 2778	. 2 ⊢ (𝜑 → (+g‘𝑀) = (+g‘𝑍))
52	27, 51	jca 511	1 ⊢ (𝜑 → ((Base‘𝑀) = (Base‘𝑍) ∧ (+g‘𝑀) = (+g‘𝑍)))

Syntax hints:   → wi 4   ∧ wa 395   = wceq 1540   ∈ wcel 2109  Vcvv 3436   ⊆ wss 3903   ↦ cmpt 5173  ran crn 5620   ∘ ccom 5623   Fn wfn 6477  ‘cfv 6482  (class class class)co 7349   ∈ cmpo 7351  Xcixp 8824  Basecbs 17120  +_gcplusg 17161  ._rcmulr 17162  X_scprds 17349  mulGrpcmgp 20025

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1795  ax-4 1809  ax-5 1910  ax-6 1967  ax-7 2008  ax-8 2111  ax-9 2119  ax-10 2142  ax-11 2158  ax-12 2178  ax-ext 2701  ax-rep 5218  ax-sep 5235  ax-nul 5245  ax-pow 5304  ax-pr 5371  ax-un 7671  ax-cnex 11065  ax-resscn 11066  ax-1cn 11067  ax-icn 11068  ax-addcl 11069  ax-addrcl 11070  ax-mulcl 11071  ax-mulrcl 11072  ax-mulcom 11073  ax-addass 11074  ax-mulass 11075  ax-distr 11076  ax-i2m1 11077  ax-1ne0 11078  ax-1rid 11079  ax-rnegex 11080  ax-rrecex 11081  ax-cnre 11082  ax-pre-lttri 11083  ax-pre-lttrn 11084  ax-pre-ltadd 11085  ax-pre-mulgt0 11086

This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3or 1087  df-3an 1088  df-tru 1543  df-fal 1553  df-ex 1780  df-nf 1784  df-sb 2066  df-mo 2533  df-eu 2562  df-clab 2708  df-cleq 2721  df-clel 2803  df-nfc 2878  df-ne 2926  df-nel 3030  df-ral 3045  df-rex 3054  df-reu 3344  df-rab 3395  df-v 3438  df-sbc 3743  df-csb 3852  df-dif 3906  df-un 3908  df-in 3910  df-ss 3920  df-pss 3923  df-nul 4285  df-if 4477  df-pw 4553  df-sn 4578  df-pr 4580  df-tp 4582  df-op 4584  df-uni 4859  df-iun 4943  df-br 5093  df-opab 5155  df-mpt 5174  df-tr 5200  df-id 5514  df-eprel 5519  df-po 5527  df-so 5528  df-fr 5572  df-we 5574  df-xp 5625  df-rel 5626  df-cnv 5627  df-co 5628  df-dm 5629  df-rn 5630  df-res 5631  df-ima 5632  df-pred 6249  df-ord 6310  df-on 6311  df-lim 6312  df-suc 6313  df-iota 6438  df-fun 6484  df-fn 6485  df-f 6486  df-f1 6487  df-fo 6488  df-f1o 6489  df-fv 6490  df-riota 7306  df-ov 7352  df-oprab 7353  df-mpo 7354  df-om 7800  df-1st 7924  df-2nd 7925  df-frecs 8214  df-wrecs 8245  df-recs 8294  df-rdg 8332  df-1o 8388  df-er 8625  df-map 8755  df-ixp 8825  df-en 8873  df-dom 8874  df-sdom 8875  df-fin 8876  df-sup 9332  df-pnf 11151  df-mnf 11152  df-xr 11153  df-ltxr 11154  df-le 11155  df-sub 11349  df-neg 11350  df-nn 12129  df-2 12191  df-3 12192  df-4 12193  df-5 12194  df-6 12195  df-7 12196  df-8 12197  df-9 12198  df-n0 12385  df-z 12472  df-dec 12592  df-uz 12736  df-fz 13411  df-struct 17058  df-sets 17075  df-slot 17093  df-ndx 17105  df-base 17121  df-plusg 17174  df-mulr 17175  df-sca 17177  df-vsca 17178  df-ip 17179  df-tset 17180  df-ple 17181  df-ds 17183  df-hom 17185  df-cco 17186  df-prds 17351  df-mgp 20026

This theorem is referenced by:  prdsrngd  20061  prdsringd  20206  prdscrngd  20207  prds1  20208  pwsmgp  20212