Theorem subglsm 19589

Description: The subgroup sum evaluated within a subgroup. (Contributed by Mario Carneiro, 27-Apr-2016.)

Hypotheses

Ref	Expression
subglsm.h	⊢ 𝐻 = (𝐺 ↾s 𝑆)
subglsm.s	⊢ ⊕ = (LSSum‘𝐺)
subglsm.a	⊢ 𝐴 = (LSSum‘𝐻)

Assertion

Ref	Expression
subglsm	⊢ ((𝑆 ∈ (SubGrp‘𝐺) ∧ 𝑇 ⊆ 𝑆 ∧ 𝑈 ⊆ 𝑆) → (𝑇 ⊕ 𝑈) = (𝑇𝐴𝑈))

Proof of Theorem subglsm

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

Step	Hyp	Ref	Expression
1		simp11 1204	. . . . . 6 ⊢ (((𝑆 ∈ (SubGrp‘𝐺) ∧ 𝑇 ⊆ 𝑆 ∧ 𝑈 ⊆ 𝑆) ∧ 𝑥 ∈ 𝑇 ∧ 𝑦 ∈ 𝑈) → 𝑆 ∈ (SubGrp‘𝐺))
2		subglsm.h	. . . . . . 7 ⊢ 𝐻 = (𝐺 ↾s 𝑆)
3		eqid 2733	. . . . . . 7 ⊢ (+g‘𝐺) = (+g‘𝐺)
4	2, 3	ressplusg 17199	. . . . . 6 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → (+g‘𝐺) = (+g‘𝐻))
5	1, 4	syl 17	. . . . 5 ⊢ (((𝑆 ∈ (SubGrp‘𝐺) ∧ 𝑇 ⊆ 𝑆 ∧ 𝑈 ⊆ 𝑆) ∧ 𝑥 ∈ 𝑇 ∧ 𝑦 ∈ 𝑈) → (+g‘𝐺) = (+g‘𝐻))
6	5	oveqd 7371	. . . 4 ⊢ (((𝑆 ∈ (SubGrp‘𝐺) ∧ 𝑇 ⊆ 𝑆 ∧ 𝑈 ⊆ 𝑆) ∧ 𝑥 ∈ 𝑇 ∧ 𝑦 ∈ 𝑈) → (𝑥(+g‘𝐺)𝑦) = (𝑥(+g‘𝐻)𝑦))
7	6	mpoeq3dva 7431	. . 3 ⊢ ((𝑆 ∈ (SubGrp‘𝐺) ∧ 𝑇 ⊆ 𝑆 ∧ 𝑈 ⊆ 𝑆) → (𝑥 ∈ 𝑇, 𝑦 ∈ 𝑈 ↦ (𝑥(+g‘𝐺)𝑦)) = (𝑥 ∈ 𝑇, 𝑦 ∈ 𝑈 ↦ (𝑥(+g‘𝐻)𝑦)))
8	7	rneqd 5884	. 2 ⊢ ((𝑆 ∈ (SubGrp‘𝐺) ∧ 𝑇 ⊆ 𝑆 ∧ 𝑈 ⊆ 𝑆) → ran (𝑥 ∈ 𝑇, 𝑦 ∈ 𝑈 ↦ (𝑥(+g‘𝐺)𝑦)) = ran (𝑥 ∈ 𝑇, 𝑦 ∈ 𝑈 ↦ (𝑥(+g‘𝐻)𝑦)))
9		subgrcl 19048	. . . 4 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → 𝐺 ∈ Grp)
10	9	3ad2ant1 1133	. . 3 ⊢ ((𝑆 ∈ (SubGrp‘𝐺) ∧ 𝑇 ⊆ 𝑆 ∧ 𝑈 ⊆ 𝑆) → 𝐺 ∈ Grp)
11		simp2 1137	. . . 4 ⊢ ((𝑆 ∈ (SubGrp‘𝐺) ∧ 𝑇 ⊆ 𝑆 ∧ 𝑈 ⊆ 𝑆) → 𝑇 ⊆ 𝑆)
12		eqid 2733	. . . . . 6 ⊢ (Base‘𝐺) = (Base‘𝐺)
13	12	subgss 19044	. . . . 5 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → 𝑆 ⊆ (Base‘𝐺))
14	13	3ad2ant1 1133	. . . 4 ⊢ ((𝑆 ∈ (SubGrp‘𝐺) ∧ 𝑇 ⊆ 𝑆 ∧ 𝑈 ⊆ 𝑆) → 𝑆 ⊆ (Base‘𝐺))
15	11, 14	sstrd 3941	. . 3 ⊢ ((𝑆 ∈ (SubGrp‘𝐺) ∧ 𝑇 ⊆ 𝑆 ∧ 𝑈 ⊆ 𝑆) → 𝑇 ⊆ (Base‘𝐺))
16		simp3 1138	. . . 4 ⊢ ((𝑆 ∈ (SubGrp‘𝐺) ∧ 𝑇 ⊆ 𝑆 ∧ 𝑈 ⊆ 𝑆) → 𝑈 ⊆ 𝑆)
17	16, 14	sstrd 3941	. . 3 ⊢ ((𝑆 ∈ (SubGrp‘𝐺) ∧ 𝑇 ⊆ 𝑆 ∧ 𝑈 ⊆ 𝑆) → 𝑈 ⊆ (Base‘𝐺))
18		subglsm.s	. . . 4 ⊢ ⊕ = (LSSum‘𝐺)
19	12, 3, 18	lsmvalx 19555	. . 3 ⊢ ((𝐺 ∈ Grp ∧ 𝑇 ⊆ (Base‘𝐺) ∧ 𝑈 ⊆ (Base‘𝐺)) → (𝑇 ⊕ 𝑈) = ran (𝑥 ∈ 𝑇, 𝑦 ∈ 𝑈 ↦ (𝑥(+g‘𝐺)𝑦)))
20	10, 15, 17, 19	syl3anc 1373	. 2 ⊢ ((𝑆 ∈ (SubGrp‘𝐺) ∧ 𝑇 ⊆ 𝑆 ∧ 𝑈 ⊆ 𝑆) → (𝑇 ⊕ 𝑈) = ran (𝑥 ∈ 𝑇, 𝑦 ∈ 𝑈 ↦ (𝑥(+g‘𝐺)𝑦)))
21	2	subggrp 19046	. . . 4 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → 𝐻 ∈ Grp)
22	21	3ad2ant1 1133	. . 3 ⊢ ((𝑆 ∈ (SubGrp‘𝐺) ∧ 𝑇 ⊆ 𝑆 ∧ 𝑈 ⊆ 𝑆) → 𝐻 ∈ Grp)
23	2	subgbas 19047	. . . . 5 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → 𝑆 = (Base‘𝐻))
24	23	3ad2ant1 1133	. . . 4 ⊢ ((𝑆 ∈ (SubGrp‘𝐺) ∧ 𝑇 ⊆ 𝑆 ∧ 𝑈 ⊆ 𝑆) → 𝑆 = (Base‘𝐻))
25	11, 24	sseqtrd 3967	. . 3 ⊢ ((𝑆 ∈ (SubGrp‘𝐺) ∧ 𝑇 ⊆ 𝑆 ∧ 𝑈 ⊆ 𝑆) → 𝑇 ⊆ (Base‘𝐻))
26	16, 24	sseqtrd 3967	. . 3 ⊢ ((𝑆 ∈ (SubGrp‘𝐺) ∧ 𝑇 ⊆ 𝑆 ∧ 𝑈 ⊆ 𝑆) → 𝑈 ⊆ (Base‘𝐻))
27		eqid 2733	. . . 4 ⊢ (Base‘𝐻) = (Base‘𝐻)
28		eqid 2733	. . . 4 ⊢ (+g‘𝐻) = (+g‘𝐻)
29		subglsm.a	. . . 4 ⊢ 𝐴 = (LSSum‘𝐻)
30	27, 28, 29	lsmvalx 19555	. . 3 ⊢ ((𝐻 ∈ Grp ∧ 𝑇 ⊆ (Base‘𝐻) ∧ 𝑈 ⊆ (Base‘𝐻)) → (𝑇𝐴𝑈) = ran (𝑥 ∈ 𝑇, 𝑦 ∈ 𝑈 ↦ (𝑥(+g‘𝐻)𝑦)))
31	22, 25, 26, 30	syl3anc 1373	. 2 ⊢ ((𝑆 ∈ (SubGrp‘𝐺) ∧ 𝑇 ⊆ 𝑆 ∧ 𝑈 ⊆ 𝑆) → (𝑇𝐴𝑈) = ran (𝑥 ∈ 𝑇, 𝑦 ∈ 𝑈 ↦ (𝑥(+g‘𝐻)𝑦)))
32	8, 20, 31	3eqtr4d 2778	1 ⊢ ((𝑆 ∈ (SubGrp‘𝐺) ∧ 𝑇 ⊆ 𝑆 ∧ 𝑈 ⊆ 𝑆) → (𝑇 ⊕ 𝑈) = (𝑇𝐴𝑈))

Syntax hints:   → wi 4   ∧ w3a 1086   = wceq 1541   ∈ wcel 2113   ⊆ wss 3898  ran crn 5622  ‘cfv 6488  (class class class)co 7354   ∈ cmpo 7356  Basecbs 17124   ↾_s cress 17145  +_gcplusg 17165  Grpcgrp 18850  SubGrpcsubg 19037  LSSumclsm 19550

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1796  ax-4 1810  ax-5 1911  ax-6 1968  ax-7 2009  ax-8 2115  ax-9 2123  ax-10 2146  ax-11 2162  ax-12 2182  ax-ext 2705  ax-rep 5221  ax-sep 5238  ax-nul 5248  ax-pow 5307  ax-pr 5374  ax-un 7676  ax-cnex 11071  ax-resscn 11072  ax-1cn 11073  ax-icn 11074  ax-addcl 11075  ax-addrcl 11076  ax-mulcl 11077  ax-mulrcl 11078  ax-mulcom 11079  ax-addass 11080  ax-mulass 11081  ax-distr 11082  ax-i2m1 11083  ax-1ne0 11084  ax-1rid 11085  ax-rnegex 11086  ax-rrecex 11087  ax-cnre 11088  ax-pre-lttri 11089  ax-pre-lttrn 11090  ax-pre-ltadd 11091  ax-pre-mulgt0 11092

This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3or 1087  df-3an 1088  df-tru 1544  df-fal 1554  df-ex 1781  df-nf 1785  df-sb 2068  df-mo 2537  df-eu 2566  df-clab 2712  df-cleq 2725  df-clel 2808  df-nfc 2882  df-ne 2930  df-nel 3034  df-ral 3049  df-rex 3058  df-reu 3348  df-rab 3397  df-v 3439  df-sbc 3738  df-csb 3847  df-dif 3901  df-un 3903  df-in 3905  df-ss 3915  df-pss 3918  df-nul 4283  df-if 4477  df-pw 4553  df-sn 4578  df-pr 4580  df-op 4584  df-uni 4861  df-iun 4945  df-br 5096  df-opab 5158  df-mpt 5177  df-tr 5203  df-id 5516  df-eprel 5521  df-po 5529  df-so 5530  df-fr 5574  df-we 5576  df-xp 5627  df-rel 5628  df-cnv 5629  df-co 5630  df-dm 5631  df-rn 5632  df-res 5633  df-ima 5634  df-pred 6255  df-ord 6316  df-on 6317  df-lim 6318  df-suc 6319  df-iota 6444  df-fun 6490  df-fn 6491  df-f 6492  df-f1 6493  df-fo 6494  df-f1o 6495  df-fv 6496  df-riota 7311  df-ov 7357  df-oprab 7358  df-mpo 7359  df-om 7805  df-1st 7929  df-2nd 7930  df-frecs 8219  df-wrecs 8250  df-recs 8299  df-rdg 8337  df-er 8630  df-en 8878  df-dom 8879  df-sdom 8880  df-pnf 11157  df-mnf 11158  df-xr 11159  df-ltxr 11160  df-le 11161  df-sub 11355  df-neg 11356  df-nn 12135  df-2 12197  df-sets 17079  df-slot 17097  df-ndx 17109  df-base 17125  df-ress 17146  df-plusg 17178  df-subg 19040  df-lsm 19552

This theorem is referenced by:  pgpfaclem1  19999