Theorem subglsm 18799

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 1199	. . . . . 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 2821	. . . . . . 7 ⊢ (+g‘𝐺) = (+g‘𝐺)
4	2, 3	ressplusg 16612	. . . . . 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 7173	. . . 4 ⊢ (((𝑆 ∈ (SubGrp‘𝐺) ∧ 𝑇 ⊆ 𝑆 ∧ 𝑈 ⊆ 𝑆) ∧ 𝑥 ∈ 𝑇 ∧ 𝑦 ∈ 𝑈) → (𝑥(+g‘𝐺)𝑦) = (𝑥(+g‘𝐻)𝑦))
7	6	mpoeq3dva 7231	. . 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 5808	. 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 18284	. . . 4 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → 𝐺 ∈ Grp)
10	9	3ad2ant1 1129	. . 3 ⊢ ((𝑆 ∈ (SubGrp‘𝐺) ∧ 𝑇 ⊆ 𝑆 ∧ 𝑈 ⊆ 𝑆) → 𝐺 ∈ Grp)
11		simp2 1133	. . . 4 ⊢ ((𝑆 ∈ (SubGrp‘𝐺) ∧ 𝑇 ⊆ 𝑆 ∧ 𝑈 ⊆ 𝑆) → 𝑇 ⊆ 𝑆)
12		eqid 2821	. . . . . 6 ⊢ (Base‘𝐺) = (Base‘𝐺)
13	12	subgss 18280	. . . . 5 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → 𝑆 ⊆ (Base‘𝐺))
14	13	3ad2ant1 1129	. . . 4 ⊢ ((𝑆 ∈ (SubGrp‘𝐺) ∧ 𝑇 ⊆ 𝑆 ∧ 𝑈 ⊆ 𝑆) → 𝑆 ⊆ (Base‘𝐺))
15	11, 14	sstrd 3977	. . 3 ⊢ ((𝑆 ∈ (SubGrp‘𝐺) ∧ 𝑇 ⊆ 𝑆 ∧ 𝑈 ⊆ 𝑆) → 𝑇 ⊆ (Base‘𝐺))
16		simp3 1134	. . . 4 ⊢ ((𝑆 ∈ (SubGrp‘𝐺) ∧ 𝑇 ⊆ 𝑆 ∧ 𝑈 ⊆ 𝑆) → 𝑈 ⊆ 𝑆)
17	16, 14	sstrd 3977	. . 3 ⊢ ((𝑆 ∈ (SubGrp‘𝐺) ∧ 𝑇 ⊆ 𝑆 ∧ 𝑈 ⊆ 𝑆) → 𝑈 ⊆ (Base‘𝐺))
18		subglsm.s	. . . 4 ⊢ ⊕ = (LSSum‘𝐺)
19	12, 3, 18	lsmvalx 18764	. . 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 1367	. 2 ⊢ ((𝑆 ∈ (SubGrp‘𝐺) ∧ 𝑇 ⊆ 𝑆 ∧ 𝑈 ⊆ 𝑆) → (𝑇 ⊕ 𝑈) = ran (𝑥 ∈ 𝑇, 𝑦 ∈ 𝑈 ↦ (𝑥(+g‘𝐺)𝑦)))
21	2	subggrp 18282	. . . 4 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → 𝐻 ∈ Grp)
22	21	3ad2ant1 1129	. . 3 ⊢ ((𝑆 ∈ (SubGrp‘𝐺) ∧ 𝑇 ⊆ 𝑆 ∧ 𝑈 ⊆ 𝑆) → 𝐻 ∈ Grp)
23	2	subgbas 18283	. . . . 5 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → 𝑆 = (Base‘𝐻))
24	23	3ad2ant1 1129	. . . 4 ⊢ ((𝑆 ∈ (SubGrp‘𝐺) ∧ 𝑇 ⊆ 𝑆 ∧ 𝑈 ⊆ 𝑆) → 𝑆 = (Base‘𝐻))
25	11, 24	sseqtrd 4007	. . 3 ⊢ ((𝑆 ∈ (SubGrp‘𝐺) ∧ 𝑇 ⊆ 𝑆 ∧ 𝑈 ⊆ 𝑆) → 𝑇 ⊆ (Base‘𝐻))
26	16, 24	sseqtrd 4007	. . 3 ⊢ ((𝑆 ∈ (SubGrp‘𝐺) ∧ 𝑇 ⊆ 𝑆 ∧ 𝑈 ⊆ 𝑆) → 𝑈 ⊆ (Base‘𝐻))
27		eqid 2821	. . . 4 ⊢ (Base‘𝐻) = (Base‘𝐻)
28		eqid 2821	. . . 4 ⊢ (+g‘𝐻) = (+g‘𝐻)
29		subglsm.a	. . . 4 ⊢ 𝐴 = (LSSum‘𝐻)
30	27, 28, 29	lsmvalx 18764	. . 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 1367	. 2 ⊢ ((𝑆 ∈ (SubGrp‘𝐺) ∧ 𝑇 ⊆ 𝑆 ∧ 𝑈 ⊆ 𝑆) → (𝑇𝐴𝑈) = ran (𝑥 ∈ 𝑇, 𝑦 ∈ 𝑈 ↦ (𝑥(+g‘𝐻)𝑦)))
32	8, 20, 31	3eqtr4d 2866	1 ⊢ ((𝑆 ∈ (SubGrp‘𝐺) ∧ 𝑇 ⊆ 𝑆 ∧ 𝑈 ⊆ 𝑆) → (𝑇 ⊕ 𝑈) = (𝑇𝐴𝑈))

Syntax hints:   → wi 4   ∧ w3a 1083   = wceq 1537   ∈ wcel 2114   ⊆ wss 3936  ran crn 5556  ‘cfv 6355  (class class class)co 7156   ∈ cmpo 7158  Basecbs 16483   ↾_s cress 16484  +_gcplusg 16565  Grpcgrp 18103  SubGrpcsubg 18273  LSSumclsm 18759

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 1970  ax-7 2015  ax-8 2116  ax-9 2124  ax-10 2145  ax-11 2161  ax-12 2177  ax-ext 2793  ax-rep 5190  ax-sep 5203  ax-nul 5210  ax-pow 5266  ax-pr 5330  ax-un 7461  ax-cnex 10593  ax-resscn 10594  ax-1cn 10595  ax-icn 10596  ax-addcl 10597  ax-addrcl 10598  ax-mulcl 10599  ax-mulrcl 10600  ax-mulcom 10601  ax-addass 10602  ax-mulass 10603  ax-distr 10604  ax-i2m1 10605  ax-1ne0 10606  ax-1rid 10607  ax-rnegex 10608  ax-rrecex 10609  ax-cnre 10610  ax-pre-lttri 10611  ax-pre-lttrn 10612  ax-pre-ltadd 10613  ax-pre-mulgt0 10614

This theorem depends on definitions:  df-bi 209  df-an 399  df-or 844  df-3or 1084  df-3an 1085  df-tru 1540  df-ex 1781  df-nf 1785  df-sb 2070  df-mo 2622  df-eu 2654  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 3773  df-csb 3884  df-dif 3939  df-un 3941  df-in 3943  df-ss 3952  df-pss 3954  df-nul 4292  df-if 4468  df-pw 4541  df-sn 4568  df-pr 4570  df-tp 4572  df-op 4574  df-uni 4839  df-iun 4921  df-br 5067  df-opab 5129  df-mpt 5147  df-tr 5173  df-id 5460  df-eprel 5465  df-po 5474  df-so 5475  df-fr 5514  df-we 5516  df-xp 5561  df-rel 5562  df-cnv 5563  df-co 5564  df-dm 5565  df-rn 5566  df-res 5567  df-ima 5568  df-pred 6148  df-ord 6194  df-on 6195  df-lim 6196  df-suc 6197  df-iota 6314  df-fun 6357  df-fn 6358  df-f 6359  df-f1 6360  df-fo 6361  df-f1o 6362  df-fv 6363  df-riota 7114  df-ov 7159  df-oprab 7160  df-mpo 7161  df-om 7581  df-1st 7689  df-2nd 7690  df-wrecs 7947  df-recs 8008  df-rdg 8046  df-er 8289  df-en 8510  df-dom 8511  df-sdom 8512  df-pnf 10677  df-mnf 10678  df-xr 10679  df-ltxr 10680  df-le 10681  df-sub 10872  df-neg 10873  df-nn 11639  df-2 11701  df-ndx 16486  df-slot 16487  df-base 16489  df-sets 16490  df-ress 16491  df-plusg 16578  df-subg 18276  df-lsm 18761

This theorem is referenced by:  pgpfaclem1  19203