Theorem mgpress 14096

Description: Subgroup commutes with the multiplicative group operator. (Contributed by Mario Carneiro, 10-Jan-2015.) (Proof shortened by AV, 18-Oct-2024.)

Hypotheses

Ref	Expression
mgpress.1	⊢ 𝑆 = (𝑅 ↾s 𝐴)
mgpress.2	⊢ 𝑀 = (mulGrp‘𝑅)

Assertion

Ref	Expression
mgpress	⊢ ((𝑅 ∈ 𝑉 ∧ 𝐴 ∈ 𝑊) → (𝑀 ↾s 𝐴) = (mulGrp‘𝑆))

Proof of Theorem mgpress

Step	Hyp	Ref	Expression
1		mgpress.2	. . . . 5 ⊢ 𝑀 = (mulGrp‘𝑅)
2		eqid 2234	. . . . 5 ⊢ (.r‘𝑅) = (.r‘𝑅)
3	1, 2	mgpvalg 14088	. . . 4 ⊢ (𝑅 ∈ 𝑉 → 𝑀 = (𝑅 sSet ⟨(+g‘ndx), (.r‘𝑅)⟩))
4	3	adantr 276	. . 3 ⊢ ((𝑅 ∈ 𝑉 ∧ 𝐴 ∈ 𝑊) → 𝑀 = (𝑅 sSet ⟨(+g‘ndx), (.r‘𝑅)⟩))
5	4	oveq1d 6067	. 2 ⊢ ((𝑅 ∈ 𝑉 ∧ 𝐴 ∈ 𝑊) → (𝑀 sSet ⟨(Base‘ndx), (𝐴 ∩ (Base‘𝑅))⟩) = ((𝑅 sSet ⟨(+g‘ndx), (.r‘𝑅)⟩) sSet ⟨(Base‘ndx), (𝐴 ∩ (Base‘𝑅))⟩))
6	1	mgpex 14090	. . . 4 ⊢ (𝑅 ∈ 𝑉 → 𝑀 ∈ V)
7		ressvalsets 13298	. . . 4 ⊢ ((𝑀 ∈ V ∧ 𝐴 ∈ 𝑊) → (𝑀 ↾s 𝐴) = (𝑀 sSet ⟨(Base‘ndx), (𝐴 ∩ (Base‘𝑀))⟩))
8	6, 7	sylan 283	. . 3 ⊢ ((𝑅 ∈ 𝑉 ∧ 𝐴 ∈ 𝑊) → (𝑀 ↾s 𝐴) = (𝑀 sSet ⟨(Base‘ndx), (𝐴 ∩ (Base‘𝑀))⟩))
9		eqid 2234	. . . . . . . 8 ⊢ (Base‘𝑅) = (Base‘𝑅)
10	1, 9	mgpbasg 14091	. . . . . . 7 ⊢ (𝑅 ∈ 𝑉 → (Base‘𝑅) = (Base‘𝑀))
11	10	adantr 276	. . . . . 6 ⊢ ((𝑅 ∈ 𝑉 ∧ 𝐴 ∈ 𝑊) → (Base‘𝑅) = (Base‘𝑀))
12	11	ineq2d 3424	. . . . 5 ⊢ ((𝑅 ∈ 𝑉 ∧ 𝐴 ∈ 𝑊) → (𝐴 ∩ (Base‘𝑅)) = (𝐴 ∩ (Base‘𝑀)))
13	12	opeq2d 3892	. . . 4 ⊢ ((𝑅 ∈ 𝑉 ∧ 𝐴 ∈ 𝑊) → ⟨(Base‘ndx), (𝐴 ∩ (Base‘𝑅))⟩ = ⟨(Base‘ndx), (𝐴 ∩ (Base‘𝑀))⟩)
14	13	oveq2d 6068	. . 3 ⊢ ((𝑅 ∈ 𝑉 ∧ 𝐴 ∈ 𝑊) → (𝑀 sSet ⟨(Base‘ndx), (𝐴 ∩ (Base‘𝑅))⟩) = (𝑀 sSet ⟨(Base‘ndx), (𝐴 ∩ (Base‘𝑀))⟩))
15	8, 14	eqtr4d 2270	. 2 ⊢ ((𝑅 ∈ 𝑉 ∧ 𝐴 ∈ 𝑊) → (𝑀 ↾s 𝐴) = (𝑀 sSet ⟨(Base‘ndx), (𝐴 ∩ (Base‘𝑅))⟩))
16		mgpress.1	. . . . 5 ⊢ 𝑆 = (𝑅 ↾s 𝐴)
17		ressvalsets 13298	. . . . 5 ⊢ ((𝑅 ∈ 𝑉 ∧ 𝐴 ∈ 𝑊) → (𝑅 ↾s 𝐴) = (𝑅 sSet ⟨(Base‘ndx), (𝐴 ∩ (Base‘𝑅))⟩))
18	16, 17	eqtrid 2279	. . . 4 ⊢ ((𝑅 ∈ 𝑉 ∧ 𝐴 ∈ 𝑊) → 𝑆 = (𝑅 sSet ⟨(Base‘ndx), (𝐴 ∩ (Base‘𝑅))⟩))
19	16, 2	ressmulrg 13379	. . . . . . 7 ⊢ ((𝐴 ∈ 𝑊 ∧ 𝑅 ∈ 𝑉) → (.r‘𝑅) = (.r‘𝑆))
20	19	ancoms 268	. . . . . 6 ⊢ ((𝑅 ∈ 𝑉 ∧ 𝐴 ∈ 𝑊) → (.r‘𝑅) = (.r‘𝑆))
21	20	eqcomd 2240	. . . . 5 ⊢ ((𝑅 ∈ 𝑉 ∧ 𝐴 ∈ 𝑊) → (.r‘𝑆) = (.r‘𝑅))
22	21	opeq2d 3892	. . . 4 ⊢ ((𝑅 ∈ 𝑉 ∧ 𝐴 ∈ 𝑊) → ⟨(+g‘ndx), (.r‘𝑆)⟩ = ⟨(+g‘ndx), (.r‘𝑅)⟩)
23	18, 22	oveq12d 6070	. . 3 ⊢ ((𝑅 ∈ 𝑉 ∧ 𝐴 ∈ 𝑊) → (𝑆 sSet ⟨(+g‘ndx), (.r‘𝑆)⟩) = ((𝑅 sSet ⟨(Base‘ndx), (𝐴 ∩ (Base‘𝑅))⟩) sSet ⟨(+g‘ndx), (.r‘𝑅)⟩))
24		ressex 13299	. . . . 5 ⊢ ((𝑅 ∈ 𝑉 ∧ 𝐴 ∈ 𝑊) → (𝑅 ↾s 𝐴) ∈ V)
25	16, 24	eqeltrid 2321	. . . 4 ⊢ ((𝑅 ∈ 𝑉 ∧ 𝐴 ∈ 𝑊) → 𝑆 ∈ V)
26		eqid 2234	. . . . 5 ⊢ (mulGrp‘𝑆) = (mulGrp‘𝑆)
27		eqid 2234	. . . . 5 ⊢ (.r‘𝑆) = (.r‘𝑆)
28	26, 27	mgpvalg 14088	. . . 4 ⊢ (𝑆 ∈ V → (mulGrp‘𝑆) = (𝑆 sSet ⟨(+g‘ndx), (.r‘𝑆)⟩))
29	25, 28	syl 14	. . 3 ⊢ ((𝑅 ∈ 𝑉 ∧ 𝐴 ∈ 𝑊) → (mulGrp‘𝑆) = (𝑆 sSet ⟨(+g‘ndx), (.r‘𝑆)⟩))
30		plusgslid 13346	. . . . . 6 ⊢ (+g = Slot (+g‘ndx) ∧ (+g‘ndx) ∈ ℕ)
31	30	simpri 113	. . . . 5 ⊢ (+g‘ndx) ∈ ℕ
32	31	a1i 9	. . . 4 ⊢ ((𝑅 ∈ 𝑉 ∧ 𝐴 ∈ 𝑊) → (+g‘ndx) ∈ ℕ)
33		basendxnn 13289	. . . . 5 ⊢ (Base‘ndx) ∈ ℕ
34	33	a1i 9	. . . 4 ⊢ ((𝑅 ∈ 𝑉 ∧ 𝐴 ∈ 𝑊) → (Base‘ndx) ∈ ℕ)
35		simpl 109	. . . 4 ⊢ ((𝑅 ∈ 𝑉 ∧ 𝐴 ∈ 𝑊) → 𝑅 ∈ 𝑉)
36		basendxnplusgndx 13359	. . . . . 6 ⊢ (Base‘ndx) ≠ (+g‘ndx)
37	36	necomi 2499	. . . . 5 ⊢ (+g‘ndx) ≠ (Base‘ndx)
38	37	a1i 9	. . . 4 ⊢ ((𝑅 ∈ 𝑉 ∧ 𝐴 ∈ 𝑊) → (+g‘ndx) ≠ (Base‘ndx))
39		mulrslid 13366	. . . . . 6 ⊢ (.r = Slot (.r‘ndx) ∧ (.r‘ndx) ∈ ℕ)
40	39	slotex 13260	. . . . 5 ⊢ (𝑅 ∈ 𝑉 → (.r‘𝑅) ∈ V)
41	40	adantr 276	. . . 4 ⊢ ((𝑅 ∈ 𝑉 ∧ 𝐴 ∈ 𝑊) → (.r‘𝑅) ∈ V)
42		inex1g 4248	. . . . 5 ⊢ (𝐴 ∈ 𝑊 → (𝐴 ∩ (Base‘𝑅)) ∈ V)
43	42	adantl 277	. . . 4 ⊢ ((𝑅 ∈ 𝑉 ∧ 𝐴 ∈ 𝑊) → (𝐴 ∩ (Base‘𝑅)) ∈ V)
44	32, 34, 35, 38, 41, 43	setscomd 13274	. . 3 ⊢ ((𝑅 ∈ 𝑉 ∧ 𝐴 ∈ 𝑊) → ((𝑅 sSet ⟨(+g‘ndx), (.r‘𝑅)⟩) sSet ⟨(Base‘ndx), (𝐴 ∩ (Base‘𝑅))⟩) = ((𝑅 sSet ⟨(Base‘ndx), (𝐴 ∩ (Base‘𝑅))⟩) sSet ⟨(+g‘ndx), (.r‘𝑅)⟩))
45	23, 29, 44	3eqtr4d 2277	. 2 ⊢ ((𝑅 ∈ 𝑉 ∧ 𝐴 ∈ 𝑊) → (mulGrp‘𝑆) = ((𝑅 sSet ⟨(+g‘ndx), (.r‘𝑅)⟩) sSet ⟨(Base‘ndx), (𝐴 ∩ (Base‘𝑅))⟩))
46	5, 15, 45	3eqtr4d 2277	1 ⊢ ((𝑅 ∈ 𝑉 ∧ 𝐴 ∈ 𝑊) → (𝑀 ↾s 𝐴) = (mulGrp‘𝑆))

Syntax hints:   → wi 4   ∧ wa 104   = wceq 1398   ∈ wcel 2205   ≠ wne 2414  Vcvv 2815   ∩ cin 3212  ⟨cop 3694  ‘cfv 5354  (class class class)co 6052  ℕcn 9242  ndxcnx 13230   sSet csts 13231  Slot cslot 13232  Basecbs 13233   ↾_s cress 13234  +_gcplusg 13311  ._rcmulr 13312  mulGrpcmgp 14085

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-in1 619  ax-in2 620  ax-io 717  ax-5 1496  ax-7 1497  ax-gen 1498  ax-ie1 1542  ax-ie2 1543  ax-8 1553  ax-10 1554  ax-11 1555  ax-i12 1556  ax-bndl 1558  ax-4 1559  ax-17 1575  ax-i9 1579  ax-ial 1583  ax-i5r 1584  ax-13 2207  ax-14 2208  ax-ext 2216  ax-sep 4230  ax-pow 4289  ax-pr 4324  ax-un 4556  ax-setind 4661  ax-cnex 8223  ax-resscn 8224  ax-1cn 8225  ax-1re 8226  ax-icn 8227  ax-addcl 8228  ax-addrcl 8229  ax-mulcl 8230  ax-addcom 8232  ax-addass 8234  ax-i2m1 8237  ax-0lt1 8238  ax-0id 8240  ax-rnegex 8241  ax-pre-ltirr 8244  ax-pre-lttrn 8246  ax-pre-ltadd 8248

This theorem depends on definitions:  df-bi 117  df-3an 1007  df-tru 1401  df-fal 1404  df-nf 1510  df-sb 1812  df-eu 2085  df-mo 2086  df-clab 2221  df-cleq 2227  df-clel 2230  df-nfc 2375  df-ne 2415  df-nel 2510  df-ral 2527  df-rex 2528  df-rab 2531  df-v 2817  df-sbc 3045  df-csb 3141  df-dif 3215  df-un 3217  df-in 3219  df-ss 3226  df-nul 3511  df-pw 3673  df-sn 3697  df-pr 3698  df-op 3700  df-uni 3917  df-int 3952  df-br 4112  df-opab 4174  df-mpt 4175  df-id 4416  df-xp 4757  df-rel 4758  df-cnv 4759  df-co 4760  df-dm 4761  df-rn 4762  df-res 4763  df-iota 5314  df-fun 5356  df-fn 5357  df-fv 5362  df-ov 6055  df-oprab 6056  df-mpo 6057  df-pnf 8315  df-mnf 8316  df-ltxr 8318  df-inn 9243  df-2 9301  df-3 9302  df-ndx 13236  df-slot 13237  df-base 13239  df-sets 13240  df-iress 13241  df-plusg 13324  df-mulr 13325  df-mgp 14086

This theorem is referenced by:  rdivmuldivd  14311  subrgcrng  14393  subrgsubm  14402  resrhm  14416  resrhm2b  14417  zringmpg  14803