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Theorem prdsmgp 18433
 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 (𝜑𝐼𝑉)
prdsmgp.s (𝜑𝑆𝑊)
prdsmgp.r (𝜑𝑅 Fn 𝐼)
Assertion
Ref Expression
prdsmgp (𝜑 → ((Base‘𝑀) = (Base‘𝑍) ∧ (+g𝑀) = (+g𝑍)))

Proof of Theorem prdsmgp
Dummy variables 𝑥 𝑦 𝑧 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 eqid 2610 . . . . . 6 (mulGrp‘(𝑅𝑥)) = (mulGrp‘(𝑅𝑥))
2 eqid 2610 . . . . . 6 (Base‘(𝑅𝑥)) = (Base‘(𝑅𝑥))
31, 2mgpbas 18318 . . . . 5 (Base‘(𝑅𝑥)) = (Base‘(mulGrp‘(𝑅𝑥)))
4 prdsmgp.r . . . . . . . 8 (𝜑𝑅 Fn 𝐼)
5 fvco2 6183 . . . . . . . 8 ((𝑅 Fn 𝐼𝑥𝐼) → ((mulGrp ∘ 𝑅)‘𝑥) = (mulGrp‘(𝑅𝑥)))
64, 5sylan 487 . . . . . . 7 ((𝜑𝑥𝐼) → ((mulGrp ∘ 𝑅)‘𝑥) = (mulGrp‘(𝑅𝑥)))
76eqcomd 2616 . . . . . 6 ((𝜑𝑥𝐼) → (mulGrp‘(𝑅𝑥)) = ((mulGrp ∘ 𝑅)‘𝑥))
87fveq2d 6107 . . . . 5 ((𝜑𝑥𝐼) → (Base‘(mulGrp‘(𝑅𝑥))) = (Base‘((mulGrp ∘ 𝑅)‘𝑥)))
93, 8syl5eq 2656 . . . 4 ((𝜑𝑥𝐼) → (Base‘(𝑅𝑥)) = (Base‘((mulGrp ∘ 𝑅)‘𝑥)))
109ixpeq2dva 7809 . . 3 (𝜑X𝑥𝐼 (Base‘(𝑅𝑥)) = X𝑥𝐼 (Base‘((mulGrp ∘ 𝑅)‘𝑥)))
11 prdsmgp.y . . . 4 𝑌 = (𝑆Xs𝑅)
12 prdsmgp.m . . . . . 6 𝑀 = (mulGrp‘𝑌)
13 eqid 2610 . . . . . 6 (Base‘𝑌) = (Base‘𝑌)
1412, 13mgpbas 18318 . . . . 5 (Base‘𝑌) = (Base‘𝑀)
1514eqcomi 2619 . . . 4 (Base‘𝑀) = (Base‘𝑌)
16 prdsmgp.s . . . 4 (𝜑𝑆𝑊)
17 prdsmgp.i . . . 4 (𝜑𝐼𝑉)
1811, 15, 16, 17, 4prdsbas2 15952 . . 3 (𝜑 → (Base‘𝑀) = X𝑥𝐼 (Base‘(𝑅𝑥)))
19 prdsmgp.z . . . 4 𝑍 = (𝑆Xs(mulGrp ∘ 𝑅))
20 eqid 2610 . . . 4 (Base‘𝑍) = (Base‘𝑍)
21 fnmgp 18314 . . . . . 6 mulGrp Fn V
2221a1i 11 . . . . 5 (𝜑 → mulGrp Fn V)
23 ssv 3588 . . . . . 6 ran 𝑅 ⊆ V
2423a1i 11 . . . . 5 (𝜑 → ran 𝑅 ⊆ V)
25 fnco 5913 . . . . 5 ((mulGrp Fn V ∧ 𝑅 Fn 𝐼 ∧ ran 𝑅 ⊆ V) → (mulGrp ∘ 𝑅) Fn 𝐼)
2622, 4, 24, 25syl3anc 1318 . . . 4 (𝜑 → (mulGrp ∘ 𝑅) Fn 𝐼)
2719, 20, 16, 17, 26prdsbas2 15952 . . 3 (𝜑 → (Base‘𝑍) = X𝑥𝐼 (Base‘((mulGrp ∘ 𝑅)‘𝑥)))
2810, 18, 273eqtr4d 2654 . 2 (𝜑 → (Base‘𝑀) = (Base‘𝑍))
29 eqid 2610 . . . 4 (.r𝑌) = (.r𝑌)
3012, 29mgpplusg 18316 . . 3 (.r𝑌) = (+g𝑀)
31 eqid 2610 . . . . . . . . 9 (mulGrp‘(𝑅𝑧)) = (mulGrp‘(𝑅𝑧))
32 eqid 2610 . . . . . . . . 9 (.r‘(𝑅𝑧)) = (.r‘(𝑅𝑧))
3331, 32mgpplusg 18316 . . . . . . . 8 (.r‘(𝑅𝑧)) = (+g‘(mulGrp‘(𝑅𝑧)))
34 fvco2 6183 . . . . . . . . . . 11 ((𝑅 Fn 𝐼𝑧𝐼) → ((mulGrp ∘ 𝑅)‘𝑧) = (mulGrp‘(𝑅𝑧)))
354, 34sylan 487 . . . . . . . . . 10 ((𝜑𝑧𝐼) → ((mulGrp ∘ 𝑅)‘𝑧) = (mulGrp‘(𝑅𝑧)))
3635eqcomd 2616 . . . . . . . . 9 ((𝜑𝑧𝐼) → (mulGrp‘(𝑅𝑧)) = ((mulGrp ∘ 𝑅)‘𝑧))
3736fveq2d 6107 . . . . . . . 8 ((𝜑𝑧𝐼) → (+g‘(mulGrp‘(𝑅𝑧))) = (+g‘((mulGrp ∘ 𝑅)‘𝑧)))
3833, 37syl5eq 2656 . . . . . . 7 ((𝜑𝑧𝐼) → (.r‘(𝑅𝑧)) = (+g‘((mulGrp ∘ 𝑅)‘𝑧)))
3938oveqd 6566 . . . . . 6 ((𝜑𝑧𝐼) → ((𝑥𝑧)(.r‘(𝑅𝑧))(𝑦𝑧)) = ((𝑥𝑧)(+g‘((mulGrp ∘ 𝑅)‘𝑧))(𝑦𝑧)))
4039mpteq2dva 4672 . . . . 5 (𝜑 → (𝑧𝐼 ↦ ((𝑥𝑧)(.r‘(𝑅𝑧))(𝑦𝑧))) = (𝑧𝐼 ↦ ((𝑥𝑧)(+g‘((mulGrp ∘ 𝑅)‘𝑧))(𝑦𝑧))))
4128, 28, 40mpt2eq123dv 6615 . . . 4 (𝜑 → (𝑥 ∈ (Base‘𝑀), 𝑦 ∈ (Base‘𝑀) ↦ (𝑧𝐼 ↦ ((𝑥𝑧)(.r‘(𝑅𝑧))(𝑦𝑧)))) = (𝑥 ∈ (Base‘𝑍), 𝑦 ∈ (Base‘𝑍) ↦ (𝑧𝐼 ↦ ((𝑥𝑧)(+g‘((mulGrp ∘ 𝑅)‘𝑧))(𝑦𝑧)))))
42 fnex 6386 . . . . . 6 ((𝑅 Fn 𝐼𝐼𝑉) → 𝑅 ∈ V)
434, 17, 42syl2anc 691 . . . . 5 (𝜑𝑅 ∈ V)
44 fndm 5904 . . . . . 6 (𝑅 Fn 𝐼 → dom 𝑅 = 𝐼)
454, 44syl 17 . . . . 5 (𝜑 → dom 𝑅 = 𝐼)
4611, 16, 43, 15, 45, 29prdsmulr 15942 . . . 4 (𝜑 → (.r𝑌) = (𝑥 ∈ (Base‘𝑀), 𝑦 ∈ (Base‘𝑀) ↦ (𝑧𝐼 ↦ ((𝑥𝑧)(.r‘(𝑅𝑧))(𝑦𝑧)))))
47 fnex 6386 . . . . . 6 (((mulGrp ∘ 𝑅) Fn 𝐼𝐼𝑉) → (mulGrp ∘ 𝑅) ∈ V)
4826, 17, 47syl2anc 691 . . . . 5 (𝜑 → (mulGrp ∘ 𝑅) ∈ V)
49 fndm 5904 . . . . . 6 ((mulGrp ∘ 𝑅) Fn 𝐼 → dom (mulGrp ∘ 𝑅) = 𝐼)
5026, 49syl 17 . . . . 5 (𝜑 → dom (mulGrp ∘ 𝑅) = 𝐼)
51 eqid 2610 . . . . 5 (+g𝑍) = (+g𝑍)
5219, 16, 48, 20, 50, 51prdsplusg 15941 . . . 4 (𝜑 → (+g𝑍) = (𝑥 ∈ (Base‘𝑍), 𝑦 ∈ (Base‘𝑍) ↦ (𝑧𝐼 ↦ ((𝑥𝑧)(+g‘((mulGrp ∘ 𝑅)‘𝑧))(𝑦𝑧)))))
5341, 46, 523eqtr4d 2654 . . 3 (𝜑 → (.r𝑌) = (+g𝑍))
5430, 53syl5eqr 2658 . 2 (𝜑 → (+g𝑀) = (+g𝑍))
5528, 54jca 553 1 (𝜑 → ((Base‘𝑀) = (Base‘𝑍) ∧ (+g𝑀) = (+g𝑍)))
 Colors of variables: wff setvar class Syntax hints:   → wi 4   ∧ wa 383   = wceq 1475   ∈ wcel 1977  Vcvv 3173   ⊆ wss 3540   ↦ cmpt 4643  dom cdm 5038  ran crn 5039   ∘ ccom 5042   Fn wfn 5799  ‘cfv 5804  (class class class)co 6549   ↦ cmpt2 6551  Xcixp 7794  Basecbs 15695  +gcplusg 15768  .rcmulr 15769  Xscprds 15929  mulGrpcmgp 18312 This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1713  ax-4 1728  ax-5 1827  ax-6 1875  ax-7 1922  ax-8 1979  ax-9 1986  ax-10 2006  ax-11 2021  ax-12 2034  ax-13 2234  ax-ext 2590  ax-rep 4699  ax-sep 4709  ax-nul 4717  ax-pow 4769  ax-pr 4833  ax-un 6847  ax-cnex 9871  ax-resscn 9872  ax-1cn 9873  ax-icn 9874  ax-addcl 9875  ax-addrcl 9876  ax-mulcl 9877  ax-mulrcl 9878  ax-mulcom 9879  ax-addass 9880  ax-mulass 9881  ax-distr 9882  ax-i2m1 9883  ax-1ne0 9884  ax-1rid 9885  ax-rnegex 9886  ax-rrecex 9887  ax-cnre 9888  ax-pre-lttri 9889  ax-pre-lttrn 9890  ax-pre-ltadd 9891  ax-pre-mulgt0 9892 This theorem depends on definitions:  df-bi 196  df-or 384  df-an 385  df-3or 1032  df-3an 1033  df-tru 1478  df-ex 1696  df-nf 1701  df-sb 1868  df-eu 2462  df-mo 2463  df-clab 2597  df-cleq 2603  df-clel 2606  df-nfc 2740  df-ne 2782  df-nel 2783  df-ral 2901  df-rex 2902  df-reu 2903  df-rab 2905  df-v 3175  df-sbc 3403  df-csb 3500  df-dif 3543  df-un 3545  df-in 3547  df-ss 3554  df-pss 3556  df-nul 3875  df-if 4037  df-pw 4110  df-sn 4126  df-pr 4128  df-tp 4130  df-op 4132  df-uni 4373  df-int 4411  df-iun 4457  df-br 4584  df-opab 4644  df-mpt 4645  df-tr 4681  df-eprel 4949  df-id 4953  df-po 4959  df-so 4960  df-fr 4997  df-we 4999  df-xp 5044  df-rel 5045  df-cnv 5046  df-co 5047  df-dm 5048  df-rn 5049  df-res 5050  df-ima 5051  df-pred 5597  df-ord 5643  df-on 5644  df-lim 5645  df-suc 5646  df-iota 5768  df-fun 5806  df-fn 5807  df-f 5808  df-f1 5809  df-fo 5810  df-f1o 5811  df-fv 5812  df-riota 6511  df-ov 6552  df-oprab 6553  df-mpt2 6554  df-om 6958  df-1st 7059  df-2nd 7060  df-wrecs 7294  df-recs 7355  df-rdg 7393  df-1o 7447  df-oadd 7451  df-er 7629  df-map 7746  df-ixp 7795  df-en 7842  df-dom 7843  df-sdom 7844  df-fin 7845  df-sup 8231  df-pnf 9955  df-mnf 9956  df-xr 9957  df-ltxr 9958  df-le 9959  df-sub 10147  df-neg 10148  df-nn 10898  df-2 10956  df-3 10957  df-4 10958  df-5 10959  df-6 10960  df-7 10961  df-8 10962  df-9 10963  df-n0 11170  df-z 11255  df-dec 11370  df-uz 11564  df-fz 12198  df-struct 15697  df-ndx 15698  df-slot 15699  df-base 15700  df-sets 15701  df-plusg 15781  df-mulr 15782  df-sca 15784  df-vsca 15785  df-ip 15786  df-tset 15787  df-ple 15788  df-ds 15791  df-hom 15793  df-cco 15794  df-prds 15931  df-mgp 18313 This theorem is referenced by:  prdsringd  18435  prdscrngd  18436  prds1  18437  pwsmgp  18441
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