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Theorem gsumzadd 19035

Description: The sum of two group sums. (Contributed by Mario Carneiro, 25-Apr-2016.) (Revised by AV, 5-Jun-2019.)

**Hypotheses**
Ref	Expression
gsumzadd.b	⊢ 𝐵 = (Base‘𝐺)
gsumzadd.0	⊢ 0 = (0_g‘𝐺)
gsumzadd.p	⊢ + = (+_g‘𝐺)
gsumzadd.z	⊢ 𝑍 = (Cntz‘𝐺)
gsumzadd.g	⊢ (𝜑 → 𝐺 ∈ Mnd)
gsumzadd.a	⊢ (𝜑 → 𝐴 ∈ 𝑉)
gsumzadd.fn	⊢ (𝜑 → 𝐹 finSupp 0 )
gsumzadd.hn	⊢ (𝜑 → 𝐻 finSupp 0 )
gsumzadd.s	⊢ (𝜑 → 𝑆 ∈ (SubMnd‘𝐺))
gsumzadd.c	⊢ (𝜑 → 𝑆 ⊆ (𝑍‘𝑆))
gsumzadd.f	⊢ (𝜑 → 𝐹:𝐴⟶𝑆)
gsumzadd.h	⊢ (𝜑 → 𝐻:𝐴⟶𝑆)

**Assertion**
Ref	Expression
gsumzadd	⊢ (𝜑 → (𝐺 Σ_g (𝐹 ∘_f + 𝐻)) = ((𝐺 Σ_g 𝐹) + (𝐺 Σ_g 𝐻)))

Proof of Theorem gsumzadd Dummy variables 𝑘 𝑥 𝑦 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		gsumzadd.b	. 2 ⊢ 𝐵 = (Base‘𝐺)
2		gsumzadd.0	. 2 ⊢ 0 = (0_g‘𝐺)
3		gsumzadd.p	. 2 ⊢ + = (+_g‘𝐺)
4		gsumzadd.z	. 2 ⊢ 𝑍 = (Cntz‘𝐺)
5		gsumzadd.g	. 2 ⊢ (𝜑 → 𝐺 ∈ Mnd)
6		gsumzadd.a	. 2 ⊢ (𝜑 → 𝐴 ∈ 𝑉)
7		gsumzadd.fn	. 2 ⊢ (𝜑 → 𝐹 finSupp 0 )
8		gsumzadd.hn	. 2 ⊢ (𝜑 → 𝐻 finSupp 0 )
9		eqid 2798	. 2 ⊢ ((𝐹 ∪ 𝐻) supp 0 ) = ((𝐹 ∪ 𝐻) supp 0 )
10		gsumzadd.f	. . 3 ⊢ (𝜑 → 𝐹:𝐴⟶𝑆)
11		gsumzadd.s	. . . 4 ⊢ (𝜑 → 𝑆 ∈ (SubMnd‘𝐺))
12	1	submss 17966	. . . 4 ⊢ (𝑆 ∈ (SubMnd‘𝐺) → 𝑆 ⊆ 𝐵)
13	11, 12	syl 17	. . 3 ⊢ (𝜑 → 𝑆 ⊆ 𝐵)
14	10, 13	fssd 6502	. 2 ⊢ (𝜑 → 𝐹:𝐴⟶𝐵)
15		gsumzadd.h	. . 3 ⊢ (𝜑 → 𝐻:𝐴⟶𝑆)
16	15, 13	fssd 6502	. 2 ⊢ (𝜑 → 𝐻:𝐴⟶𝐵)
17		gsumzadd.c	. . 3 ⊢ (𝜑 → 𝑆 ⊆ (𝑍‘𝑆))
18	10	frnd 6494	. . 3 ⊢ (𝜑 → ran 𝐹 ⊆ 𝑆)
19	4	cntzidss 18460	. . 3 ⊢ ((𝑆 ⊆ (𝑍‘𝑆) ∧ ran 𝐹 ⊆ 𝑆) → ran 𝐹 ⊆ (𝑍‘ran 𝐹))
20	17, 18, 19	syl2anc 587	. 2 ⊢ (𝜑 → ran 𝐹 ⊆ (𝑍‘ran 𝐹))
21	15	frnd 6494	. . 3 ⊢ (𝜑 → ran 𝐻 ⊆ 𝑆)
22	4	cntzidss 18460	. . 3 ⊢ ((𝑆 ⊆ (𝑍‘𝑆) ∧ ran 𝐻 ⊆ 𝑆) → ran 𝐻 ⊆ (𝑍‘ran 𝐻))
23	17, 21, 22	syl2anc 587	. 2 ⊢ (𝜑 → ran 𝐻 ⊆ (𝑍‘ran 𝐻))
24	3	submcl 17969	. . . . . . 7 ⊢ ((𝑆 ∈ (SubMnd‘𝐺) ∧ 𝑥 ∈ 𝑆 ∧ 𝑦 ∈ 𝑆) → (𝑥 + 𝑦) ∈ 𝑆)
25	24	3expb 1117	. . . . . 6 ⊢ ((𝑆 ∈ (SubMnd‘𝐺) ∧ (𝑥 ∈ 𝑆 ∧ 𝑦 ∈ 𝑆)) → (𝑥 + 𝑦) ∈ 𝑆)
26	11, 25	sylan 583	. . . . 5 ⊢ ((𝜑 ∧ (𝑥 ∈ 𝑆 ∧ 𝑦 ∈ 𝑆)) → (𝑥 + 𝑦) ∈ 𝑆)
27		inidm 4145	. . . . 5 ⊢ (𝐴 ∩ 𝐴) = 𝐴
28	26, 10, 15, 6, 6, 27	off 7404	. . . 4 ⊢ (𝜑 → (𝐹 ∘_f + 𝐻):𝐴⟶𝑆)
29	28	frnd 6494	. . 3 ⊢ (𝜑 → ran (𝐹 ∘_f + 𝐻) ⊆ 𝑆)
30	4	cntzidss 18460	. . 3 ⊢ ((𝑆 ⊆ (𝑍‘𝑆) ∧ ran (𝐹 ∘_f + 𝐻) ⊆ 𝑆) → ran (𝐹 ∘_f + 𝐻) ⊆ (𝑍‘ran (𝐹 ∘_f + 𝐻)))
31	17, 29, 30	syl2anc 587	. 2 ⊢ (𝜑 → ran (𝐹 ∘_f + 𝐻) ⊆ (𝑍‘ran (𝐹 ∘_f + 𝐻)))
32	17	adantr 484	. . . 4 ⊢ ((𝜑 ∧ (𝑥 ⊆ 𝐴 ∧ 𝑘 ∈ (𝐴 ∖ 𝑥))) → 𝑆 ⊆ (𝑍‘𝑆))
33	13	adantr 484	. . . . 5 ⊢ ((𝜑 ∧ (𝑥 ⊆ 𝐴 ∧ 𝑘 ∈ (𝐴 ∖ 𝑥))) → 𝑆 ⊆ 𝐵)
34	5	adantr 484	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑥 ⊆ 𝐴 ∧ 𝑘 ∈ (𝐴 ∖ 𝑥))) → 𝐺 ∈ Mnd)
35		vex 3444	. . . . . . . 8 ⊢ 𝑥 ∈ V
36	35	a1i 11	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑥 ⊆ 𝐴 ∧ 𝑘 ∈ (𝐴 ∖ 𝑥))) → 𝑥 ∈ V)
37	11	adantr 484	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑥 ⊆ 𝐴 ∧ 𝑘 ∈ (𝐴 ∖ 𝑥))) → 𝑆 ∈ (SubMnd‘𝐺))
38		simpl 486	. . . . . . . 8 ⊢ ((𝑥 ⊆ 𝐴 ∧ 𝑘 ∈ (𝐴 ∖ 𝑥)) → 𝑥 ⊆ 𝐴)
39		fssres 6518	. . . . . . . 8 ⊢ ((𝐻:𝐴⟶𝑆 ∧ 𝑥 ⊆ 𝐴) → (𝐻 ↾ 𝑥):𝑥⟶𝑆)
40	15, 38, 39	syl2an 598	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑥 ⊆ 𝐴 ∧ 𝑘 ∈ (𝐴 ∖ 𝑥))) → (𝐻 ↾ 𝑥):𝑥⟶𝑆)
41	23	adantr 484	. . . . . . . 8 ⊢ ((𝜑 ∧ (𝑥 ⊆ 𝐴 ∧ 𝑘 ∈ (𝐴 ∖ 𝑥))) → ran 𝐻 ⊆ (𝑍‘ran 𝐻))
42		resss 5843	. . . . . . . . 9 ⊢ (𝐻 ↾ 𝑥) ⊆ 𝐻
43	42	rnssi 5774	. . . . . . . 8 ⊢ ran (𝐻 ↾ 𝑥) ⊆ ran 𝐻
44	4	cntzidss 18460	. . . . . . . 8 ⊢ ((ran 𝐻 ⊆ (𝑍‘ran 𝐻) ∧ ran (𝐻 ↾ 𝑥) ⊆ ran 𝐻) → ran (𝐻 ↾ 𝑥) ⊆ (𝑍‘ran (𝐻 ↾ 𝑥)))
45	41, 43, 44	sylancl 589	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑥 ⊆ 𝐴 ∧ 𝑘 ∈ (𝐴 ∖ 𝑥))) → ran (𝐻 ↾ 𝑥) ⊆ (𝑍‘ran (𝐻 ↾ 𝑥)))
46	15	ffund 6491	. . . . . . . . . 10 ⊢ (𝜑 → Fun 𝐻)
47		funres 6366	. . . . . . . . . 10 ⊢ (Fun 𝐻 → Fun (𝐻 ↾ 𝑥))
48	46, 47	syl 17	. . . . . . . . 9 ⊢ (𝜑 → Fun (𝐻 ↾ 𝑥))
49	48	adantr 484	. . . . . . . 8 ⊢ ((𝜑 ∧ (𝑥 ⊆ 𝐴 ∧ 𝑘 ∈ (𝐴 ∖ 𝑥))) → Fun (𝐻 ↾ 𝑥))
50	8	fsuppimpd 8824	. . . . . . . . . 10 ⊢ (𝜑 → (𝐻 supp 0 ) ∈ Fin)
51	50	adantr 484	. . . . . . . . 9 ⊢ ((𝜑 ∧ (𝑥 ⊆ 𝐴 ∧ 𝑘 ∈ (𝐴 ∖ 𝑥))) → (𝐻 supp 0 ) ∈ Fin)
52		fex 6966	. . . . . . . . . . . 12 ⊢ ((𝐻:𝐴⟶𝑆 ∧ 𝐴 ∈ 𝑉) → 𝐻 ∈ V)
53	15, 6, 52	syl2anc 587	. . . . . . . . . . 11 ⊢ (𝜑 → 𝐻 ∈ V)
54	2	fvexi 6659	. . . . . . . . . . 11 ⊢ 0 ∈ V
55		ressuppss 7832	. . . . . . . . . . 11 ⊢ ((𝐻 ∈ V ∧ 0 ∈ V) → ((𝐻 ↾ 𝑥) supp 0 ) ⊆ (𝐻 supp 0 ))
56	53, 54, 55	sylancl 589	. . . . . . . . . 10 ⊢ (𝜑 → ((𝐻 ↾ 𝑥) supp 0 ) ⊆ (𝐻 supp 0 ))
57	56	adantr 484	. . . . . . . . 9 ⊢ ((𝜑 ∧ (𝑥 ⊆ 𝐴 ∧ 𝑘 ∈ (𝐴 ∖ 𝑥))) → ((𝐻 ↾ 𝑥) supp 0 ) ⊆ (𝐻 supp 0 ))
58	51, 57	ssfid 8725	. . . . . . . 8 ⊢ ((𝜑 ∧ (𝑥 ⊆ 𝐴 ∧ 𝑘 ∈ (𝐴 ∖ 𝑥))) → ((𝐻 ↾ 𝑥) supp 0 ) ∈ Fin)
59		resfunexg 6955	. . . . . . . . . . 11 ⊢ ((Fun 𝐻 ∧ 𝑥 ∈ V) → (𝐻 ↾ 𝑥) ∈ V)
60	46, 35, 59	sylancl 589	. . . . . . . . . 10 ⊢ (𝜑 → (𝐻 ↾ 𝑥) ∈ V)
61		isfsupp 8821	. . . . . . . . . 10 ⊢ (((𝐻 ↾ 𝑥) ∈ V ∧ 0 ∈ V) → ((𝐻 ↾ 𝑥) finSupp 0 ↔ (Fun (𝐻 ↾ 𝑥) ∧ ((𝐻 ↾ 𝑥) supp 0 ) ∈ Fin)))
62	60, 54, 61	sylancl 589	. . . . . . . . 9 ⊢ (𝜑 → ((𝐻 ↾ 𝑥) finSupp 0 ↔ (Fun (𝐻 ↾ 𝑥) ∧ ((𝐻 ↾ 𝑥) supp 0 ) ∈ Fin)))
63	62	adantr 484	. . . . . . . 8 ⊢ ((𝜑 ∧ (𝑥 ⊆ 𝐴 ∧ 𝑘 ∈ (𝐴 ∖ 𝑥))) → ((𝐻 ↾ 𝑥) finSupp 0 ↔ (Fun (𝐻 ↾ 𝑥) ∧ ((𝐻 ↾ 𝑥) supp 0 ) ∈ Fin)))
64	49, 58, 63	mpbir2and 712	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑥 ⊆ 𝐴 ∧ 𝑘 ∈ (𝐴 ∖ 𝑥))) → (𝐻 ↾ 𝑥) finSupp 0 )
65	2, 4, 34, 36, 37, 40, 45, 64	gsumzsubmcl 19031	. . . . . 6 ⊢ ((𝜑 ∧ (𝑥 ⊆ 𝐴 ∧ 𝑘 ∈ (𝐴 ∖ 𝑥))) → (𝐺 Σ_g (𝐻 ↾ 𝑥)) ∈ 𝑆)
66	65	snssd 4702	. . . . 5 ⊢ ((𝜑 ∧ (𝑥 ⊆ 𝐴 ∧ 𝑘 ∈ (𝐴 ∖ 𝑥))) → {(𝐺 Σ_g (𝐻 ↾ 𝑥))} ⊆ 𝑆)
67	1, 4	cntz2ss 18455	. . . . 5 ⊢ ((𝑆 ⊆ 𝐵 ∧ {(𝐺 Σ_g (𝐻 ↾ 𝑥))} ⊆ 𝑆) → (𝑍‘𝑆) ⊆ (𝑍‘{(𝐺 Σ_g (𝐻 ↾ 𝑥))}))
68	33, 66, 67	syl2anc 587	. . . 4 ⊢ ((𝜑 ∧ (𝑥 ⊆ 𝐴 ∧ 𝑘 ∈ (𝐴 ∖ 𝑥))) → (𝑍‘𝑆) ⊆ (𝑍‘{(𝐺 Σ_g (𝐻 ↾ 𝑥))}))
69	32, 68	sstrd 3925	. . 3 ⊢ ((𝜑 ∧ (𝑥 ⊆ 𝐴 ∧ 𝑘 ∈ (𝐴 ∖ 𝑥))) → 𝑆 ⊆ (𝑍‘{(𝐺 Σ_g (𝐻 ↾ 𝑥))}))
70		eldifi 4054	. . . . 5 ⊢ (𝑘 ∈ (𝐴 ∖ 𝑥) → 𝑘 ∈ 𝐴)
71	70	adantl 485	. . . 4 ⊢ ((𝑥 ⊆ 𝐴 ∧ 𝑘 ∈ (𝐴 ∖ 𝑥)) → 𝑘 ∈ 𝐴)
72		ffvelrn 6826	. . . 4 ⊢ ((𝐹:𝐴⟶𝑆 ∧ 𝑘 ∈ 𝐴) → (𝐹‘𝑘) ∈ 𝑆)
73	10, 71, 72	syl2an 598	. . 3 ⊢ ((𝜑 ∧ (𝑥 ⊆ 𝐴 ∧ 𝑘 ∈ (𝐴 ∖ 𝑥))) → (𝐹‘𝑘) ∈ 𝑆)
74	69, 73	sseldd 3916	. 2 ⊢ ((𝜑 ∧ (𝑥 ⊆ 𝐴 ∧ 𝑘 ∈ (𝐴 ∖ 𝑥))) → (𝐹‘𝑘) ∈ (𝑍‘{(𝐺 Σ_g (𝐻 ↾ 𝑥))}))
75	1, 2, 3, 4, 5, 6, 7, 8, 9, 14, 16, 20, 23, 31, 74	gsumzaddlem 19034	1 ⊢ (𝜑 → (𝐺 Σ_g (𝐹 ∘_f + 𝐻)) = ((𝐺 Σ_g 𝐹) + (𝐺 Σ_g 𝐻)))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ↔ wb 209 ∧ wa 399 = wceq 1538 ∈ wcel 2111 Vcvv 3441 ∖ cdif 3878 ∪ cun 3879 ⊆ wss 3881 {csn 4525 class class class wbr 5030 ran crn 5520 ↾ cres 5521 Fun wfun 6318 ⟶wf 6320 ‘cfv 6324 (class class class)co 7135 ∘_f cof 7387 supp csupp 7813 Fincfn 8492 finSupp cfsupp 8817 Basecbs 16475 +_gcplusg 16557 0_gc0g 16705 Σ_g cgsu 16706 Mndcmnd 17903 SubMndcsubmnd 17947 Cntzccntz 18437

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2113 ax-9 2121 ax-10 2142 ax-11 2158 ax-12 2175 ax-ext 2770 ax-rep 5154 ax-sep 5167 ax-nul 5174 ax-pow 5231 ax-pr 5295 ax-un 7441 ax-cnex 10582 ax-resscn 10583 ax-1cn 10584 ax-icn 10585 ax-addcl 10586 ax-addrcl 10587 ax-mulcl 10588 ax-mulrcl 10589 ax-mulcom 10590 ax-addass 10591 ax-mulass 10592 ax-distr 10593 ax-i2m1 10594 ax-1ne0 10595 ax-1rid 10596 ax-rnegex 10597 ax-rrecex 10598 ax-cnre 10599 ax-pre-lttri 10600 ax-pre-lttrn 10601 ax-pre-ltadd 10602 ax-pre-mulgt0 10603

This theorem depends on definitions: df-bi 210 df-an 400 df-or 845 df-3or 1085 df-3an 1086 df-tru 1541 df-ex 1782 df-nf 1786 df-sb 2070 df-mo 2598 df-eu 2629 df-clab 2777 df-cleq 2791 df-clel 2870 df-nfc 2938 df-ne 2988 df-nel 3092 df-ral 3111 df-rex 3112 df-reu 3113 df-rmo 3114 df-rab 3115 df-v 3443 df-sbc 3721 df-csb 3829 df-dif 3884 df-un 3886 df-in 3888 df-ss 3898 df-pss 3900 df-nul 4244 df-if 4426 df-pw 4499 df-sn 4526 df-pr 4528 df-tp 4530 df-op 4532 df-uni 4801 df-int 4839 df-iun 4883 df-br 5031 df-opab 5093 df-mpt 5111 df-tr 5137 df-id 5425 df-eprel 5430 df-po 5438 df-so 5439 df-fr 5478 df-se 5479 df-we 5480 df-xp 5525 df-rel 5526 df-cnv 5527 df-co 5528 df-dm 5529 df-rn 5530 df-res 5531 df-ima 5532 df-pred 6116 df-ord 6162 df-on 6163 df-lim 6164 df-suc 6165 df-iota 6283 df-fun 6326 df-fn 6327 df-f 6328 df-f1 6329 df-fo 6330 df-f1o 6331 df-fv 6332 df-isom 6333 df-riota 7093 df-ov 7138 df-oprab 7139 df-mpo 7140 df-of 7389 df-om 7561 df-1st 7671 df-2nd 7672 df-supp 7814 df-wrecs 7930 df-recs 7991 df-rdg 8029 df-1o 8085 df-oadd 8089 df-er 8272 df-en 8493 df-dom 8494 df-sdom 8495 df-fin 8496 df-fsupp 8818 df-oi 8958 df-card 9352 df-pnf 10666 df-mnf 10667 df-xr 10668 df-ltxr 10669 df-le 10670 df-sub 10861 df-neg 10862 df-nn 11626 df-2 11688 df-n0 11886 df-z 11970 df-uz 12232 df-fz 12886 df-fzo 13029 df-seq 13365 df-hash 13687 df-ndx 16478 df-slot 16479 df-base 16481 df-sets 16482 df-ress 16483 df-plusg 16570 df-0g 16707 df-gsum 16708 df-mgm 17844 df-sgrp 17893 df-mnd 17904 df-submnd 17949 df-cntz 18439

This theorem is referenced by: gsumadd 19036 gsumzsplit 19040

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