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Theorem gsumzadd 19044

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 2823	. 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 17976	. . . 4 ⊢ (𝑆 ∈ (SubMnd‘𝐺) → 𝑆 ⊆ 𝐵)
13	11, 12	syl 17	. . 3 ⊢ (𝜑 → 𝑆 ⊆ 𝐵)
14	10, 13	fssd 6530	. 2 ⊢ (𝜑 → 𝐹:𝐴⟶𝐵)
15		gsumzadd.h	. . 3 ⊢ (𝜑 → 𝐻:𝐴⟶𝑆)
16	15, 13	fssd 6530	. 2 ⊢ (𝜑 → 𝐻:𝐴⟶𝐵)
17		gsumzadd.c	. . 3 ⊢ (𝜑 → 𝑆 ⊆ (𝑍‘𝑆))
18	10	frnd 6523	. . 3 ⊢ (𝜑 → ran 𝐹 ⊆ 𝑆)
19	4	cntzidss 18470	. . 3 ⊢ ((𝑆 ⊆ (𝑍‘𝑆) ∧ ran 𝐹 ⊆ 𝑆) → ran 𝐹 ⊆ (𝑍‘ran 𝐹))
20	17, 18, 19	syl2anc 586	. 2 ⊢ (𝜑 → ran 𝐹 ⊆ (𝑍‘ran 𝐹))
21	15	frnd 6523	. . 3 ⊢ (𝜑 → ran 𝐻 ⊆ 𝑆)
22	4	cntzidss 18470	. . 3 ⊢ ((𝑆 ⊆ (𝑍‘𝑆) ∧ ran 𝐻 ⊆ 𝑆) → ran 𝐻 ⊆ (𝑍‘ran 𝐻))
23	17, 21, 22	syl2anc 586	. 2 ⊢ (𝜑 → ran 𝐻 ⊆ (𝑍‘ran 𝐻))
24	3	submcl 17979	. . . . . . 7 ⊢ ((𝑆 ∈ (SubMnd‘𝐺) ∧ 𝑥 ∈ 𝑆 ∧ 𝑦 ∈ 𝑆) → (𝑥 + 𝑦) ∈ 𝑆)
25	24	3expb 1116	. . . . . 6 ⊢ ((𝑆 ∈ (SubMnd‘𝐺) ∧ (𝑥 ∈ 𝑆 ∧ 𝑦 ∈ 𝑆)) → (𝑥 + 𝑦) ∈ 𝑆)
26	11, 25	sylan 582	. . . . 5 ⊢ ((𝜑 ∧ (𝑥 ∈ 𝑆 ∧ 𝑦 ∈ 𝑆)) → (𝑥 + 𝑦) ∈ 𝑆)
27		inidm 4197	. . . . 5 ⊢ (𝐴 ∩ 𝐴) = 𝐴
28	26, 10, 15, 6, 6, 27	off 7426	. . . 4 ⊢ (𝜑 → (𝐹 ∘_f + 𝐻):𝐴⟶𝑆)
29	28	frnd 6523	. . 3 ⊢ (𝜑 → ran (𝐹 ∘_f + 𝐻) ⊆ 𝑆)
30	4	cntzidss 18470	. . 3 ⊢ ((𝑆 ⊆ (𝑍‘𝑆) ∧ ran (𝐹 ∘_f + 𝐻) ⊆ 𝑆) → ran (𝐹 ∘_f + 𝐻) ⊆ (𝑍‘ran (𝐹 ∘_f + 𝐻)))
31	17, 29, 30	syl2anc 586	. 2 ⊢ (𝜑 → ran (𝐹 ∘_f + 𝐻) ⊆ (𝑍‘ran (𝐹 ∘_f + 𝐻)))
32	17	adantr 483	. . . 4 ⊢ ((𝜑 ∧ (𝑥 ⊆ 𝐴 ∧ 𝑘 ∈ (𝐴 ∖ 𝑥))) → 𝑆 ⊆ (𝑍‘𝑆))
33	13	adantr 483	. . . . 5 ⊢ ((𝜑 ∧ (𝑥 ⊆ 𝐴 ∧ 𝑘 ∈ (𝐴 ∖ 𝑥))) → 𝑆 ⊆ 𝐵)
34	5	adantr 483	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑥 ⊆ 𝐴 ∧ 𝑘 ∈ (𝐴 ∖ 𝑥))) → 𝐺 ∈ Mnd)
35		vex 3499	. . . . . . . 8 ⊢ 𝑥 ∈ V
36	35	a1i 11	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑥 ⊆ 𝐴 ∧ 𝑘 ∈ (𝐴 ∖ 𝑥))) → 𝑥 ∈ V)
37	11	adantr 483	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑥 ⊆ 𝐴 ∧ 𝑘 ∈ (𝐴 ∖ 𝑥))) → 𝑆 ∈ (SubMnd‘𝐺))
38		simpl 485	. . . . . . . 8 ⊢ ((𝑥 ⊆ 𝐴 ∧ 𝑘 ∈ (𝐴 ∖ 𝑥)) → 𝑥 ⊆ 𝐴)
39		fssres 6546	. . . . . . . 8 ⊢ ((𝐻:𝐴⟶𝑆 ∧ 𝑥 ⊆ 𝐴) → (𝐻 ↾ 𝑥):𝑥⟶𝑆)
40	15, 38, 39	syl2an 597	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑥 ⊆ 𝐴 ∧ 𝑘 ∈ (𝐴 ∖ 𝑥))) → (𝐻 ↾ 𝑥):𝑥⟶𝑆)
41	23	adantr 483	. . . . . . . 8 ⊢ ((𝜑 ∧ (𝑥 ⊆ 𝐴 ∧ 𝑘 ∈ (𝐴 ∖ 𝑥))) → ran 𝐻 ⊆ (𝑍‘ran 𝐻))
42		resss 5880	. . . . . . . . 9 ⊢ (𝐻 ↾ 𝑥) ⊆ 𝐻
43	42	rnssi 5812	. . . . . . . 8 ⊢ ran (𝐻 ↾ 𝑥) ⊆ ran 𝐻
44	4	cntzidss 18470	. . . . . . . 8 ⊢ ((ran 𝐻 ⊆ (𝑍‘ran 𝐻) ∧ ran (𝐻 ↾ 𝑥) ⊆ ran 𝐻) → ran (𝐻 ↾ 𝑥) ⊆ (𝑍‘ran (𝐻 ↾ 𝑥)))
45	41, 43, 44	sylancl 588	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑥 ⊆ 𝐴 ∧ 𝑘 ∈ (𝐴 ∖ 𝑥))) → ran (𝐻 ↾ 𝑥) ⊆ (𝑍‘ran (𝐻 ↾ 𝑥)))
46	15	ffund 6520	. . . . . . . . . 10 ⊢ (𝜑 → Fun 𝐻)
47		funres 6399	. . . . . . . . . 10 ⊢ (Fun 𝐻 → Fun (𝐻 ↾ 𝑥))
48	46, 47	syl 17	. . . . . . . . 9 ⊢ (𝜑 → Fun (𝐻 ↾ 𝑥))
49	48	adantr 483	. . . . . . . 8 ⊢ ((𝜑 ∧ (𝑥 ⊆ 𝐴 ∧ 𝑘 ∈ (𝐴 ∖ 𝑥))) → Fun (𝐻 ↾ 𝑥))
50	8	fsuppimpd 8842	. . . . . . . . . 10 ⊢ (𝜑 → (𝐻 supp 0 ) ∈ Fin)
51	50	adantr 483	. . . . . . . . 9 ⊢ ((𝜑 ∧ (𝑥 ⊆ 𝐴 ∧ 𝑘 ∈ (𝐴 ∖ 𝑥))) → (𝐻 supp 0 ) ∈ Fin)
52		fex 6991	. . . . . . . . . . . 12 ⊢ ((𝐻:𝐴⟶𝑆 ∧ 𝐴 ∈ 𝑉) → 𝐻 ∈ V)
53	15, 6, 52	syl2anc 586	. . . . . . . . . . 11 ⊢ (𝜑 → 𝐻 ∈ V)
54	2	fvexi 6686	. . . . . . . . . . 11 ⊢ 0 ∈ V
55		ressuppss 7851	. . . . . . . . . . 11 ⊢ ((𝐻 ∈ V ∧ 0 ∈ V) → ((𝐻 ↾ 𝑥) supp 0 ) ⊆ (𝐻 supp 0 ))
56	53, 54, 55	sylancl 588	. . . . . . . . . 10 ⊢ (𝜑 → ((𝐻 ↾ 𝑥) supp 0 ) ⊆ (𝐻 supp 0 ))
57	56	adantr 483	. . . . . . . . 9 ⊢ ((𝜑 ∧ (𝑥 ⊆ 𝐴 ∧ 𝑘 ∈ (𝐴 ∖ 𝑥))) → ((𝐻 ↾ 𝑥) supp 0 ) ⊆ (𝐻 supp 0 ))
58	51, 57	ssfid 8743	. . . . . . . 8 ⊢ ((𝜑 ∧ (𝑥 ⊆ 𝐴 ∧ 𝑘 ∈ (𝐴 ∖ 𝑥))) → ((𝐻 ↾ 𝑥) supp 0 ) ∈ Fin)
59		resfunexg 6980	. . . . . . . . . . 11 ⊢ ((Fun 𝐻 ∧ 𝑥 ∈ V) → (𝐻 ↾ 𝑥) ∈ V)
60	46, 35, 59	sylancl 588	. . . . . . . . . 10 ⊢ (𝜑 → (𝐻 ↾ 𝑥) ∈ V)
61		isfsupp 8839	. . . . . . . . . 10 ⊢ (((𝐻 ↾ 𝑥) ∈ V ∧ 0 ∈ V) → ((𝐻 ↾ 𝑥) finSupp 0 ↔ (Fun (𝐻 ↾ 𝑥) ∧ ((𝐻 ↾ 𝑥) supp 0 ) ∈ Fin)))
62	60, 54, 61	sylancl 588	. . . . . . . . 9 ⊢ (𝜑 → ((𝐻 ↾ 𝑥) finSupp 0 ↔ (Fun (𝐻 ↾ 𝑥) ∧ ((𝐻 ↾ 𝑥) supp 0 ) ∈ Fin)))
63	62	adantr 483	. . . . . . . 8 ⊢ ((𝜑 ∧ (𝑥 ⊆ 𝐴 ∧ 𝑘 ∈ (𝐴 ∖ 𝑥))) → ((𝐻 ↾ 𝑥) finSupp 0 ↔ (Fun (𝐻 ↾ 𝑥) ∧ ((𝐻 ↾ 𝑥) supp 0 ) ∈ Fin)))
64	49, 58, 63	mpbir2and 711	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑥 ⊆ 𝐴 ∧ 𝑘 ∈ (𝐴 ∖ 𝑥))) → (𝐻 ↾ 𝑥) finSupp 0 )
65	2, 4, 34, 36, 37, 40, 45, 64	gsumzsubmcl 19040	. . . . . 6 ⊢ ((𝜑 ∧ (𝑥 ⊆ 𝐴 ∧ 𝑘 ∈ (𝐴 ∖ 𝑥))) → (𝐺 Σ_g (𝐻 ↾ 𝑥)) ∈ 𝑆)
66	65	snssd 4744	. . . . 5 ⊢ ((𝜑 ∧ (𝑥 ⊆ 𝐴 ∧ 𝑘 ∈ (𝐴 ∖ 𝑥))) → {(𝐺 Σ_g (𝐻 ↾ 𝑥))} ⊆ 𝑆)
67	1, 4	cntz2ss 18465	. . . . 5 ⊢ ((𝑆 ⊆ 𝐵 ∧ {(𝐺 Σ_g (𝐻 ↾ 𝑥))} ⊆ 𝑆) → (𝑍‘𝑆) ⊆ (𝑍‘{(𝐺 Σ_g (𝐻 ↾ 𝑥))}))
68	33, 66, 67	syl2anc 586	. . . 4 ⊢ ((𝜑 ∧ (𝑥 ⊆ 𝐴 ∧ 𝑘 ∈ (𝐴 ∖ 𝑥))) → (𝑍‘𝑆) ⊆ (𝑍‘{(𝐺 Σ_g (𝐻 ↾ 𝑥))}))
69	32, 68	sstrd 3979	. . 3 ⊢ ((𝜑 ∧ (𝑥 ⊆ 𝐴 ∧ 𝑘 ∈ (𝐴 ∖ 𝑥))) → 𝑆 ⊆ (𝑍‘{(𝐺 Σ_g (𝐻 ↾ 𝑥))}))
70		eldifi 4105	. . . . 5 ⊢ (𝑘 ∈ (𝐴 ∖ 𝑥) → 𝑘 ∈ 𝐴)
71	70	adantl 484	. . . 4 ⊢ ((𝑥 ⊆ 𝐴 ∧ 𝑘 ∈ (𝐴 ∖ 𝑥)) → 𝑘 ∈ 𝐴)
72		ffvelrn 6851	. . . 4 ⊢ ((𝐹:𝐴⟶𝑆 ∧ 𝑘 ∈ 𝐴) → (𝐹‘𝑘) ∈ 𝑆)
73	10, 71, 72	syl2an 597	. . 3 ⊢ ((𝜑 ∧ (𝑥 ⊆ 𝐴 ∧ 𝑘 ∈ (𝐴 ∖ 𝑥))) → (𝐹‘𝑘) ∈ 𝑆)
74	69, 73	sseldd 3970	. 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 19043	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 208 ∧ wa 398 = wceq 1537 ∈ wcel 2114 Vcvv 3496 ∖ cdif 3935 ∪ cun 3936 ⊆ wss 3938 {csn 4569 class class class wbr 5068 ran crn 5558 ↾ cres 5559 Fun wfun 6351 ⟶wf 6353 ‘cfv 6357 (class class class)co 7158 ∘_f cof 7409 supp csupp 7832 Fincfn 8511 finSupp cfsupp 8835 Basecbs 16485 +_gcplusg 16567 0_gc0g 16715 Σ_g cgsu 16716 Mndcmnd 17913 SubMndcsubmnd 17957 Cntzccntz 18447

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 2795 ax-rep 5192 ax-sep 5205 ax-nul 5212 ax-pow 5268 ax-pr 5332 ax-un 7463 ax-cnex 10595 ax-resscn 10596 ax-1cn 10597 ax-icn 10598 ax-addcl 10599 ax-addrcl 10600 ax-mulcl 10601 ax-mulrcl 10602 ax-mulcom 10603 ax-addass 10604 ax-mulass 10605 ax-distr 10606 ax-i2m1 10607 ax-1ne0 10608 ax-1rid 10609 ax-rnegex 10610 ax-rrecex 10611 ax-cnre 10612 ax-pre-lttri 10613 ax-pre-lttrn 10614 ax-pre-ltadd 10615 ax-pre-mulgt0 10616

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 2802 df-cleq 2816 df-clel 2895 df-nfc 2965 df-ne 3019 df-nel 3126 df-ral 3145 df-rex 3146 df-reu 3147 df-rmo 3148 df-rab 3149 df-v 3498 df-sbc 3775 df-csb 3886 df-dif 3941 df-un 3943 df-in 3945 df-ss 3954 df-pss 3956 df-nul 4294 df-if 4470 df-pw 4543 df-sn 4570 df-pr 4572 df-tp 4574 df-op 4576 df-uni 4841 df-int 4879 df-iun 4923 df-br 5069 df-opab 5131 df-mpt 5149 df-tr 5175 df-id 5462 df-eprel 5467 df-po 5476 df-so 5477 df-fr 5516 df-se 5517 df-we 5518 df-xp 5563 df-rel 5564 df-cnv 5565 df-co 5566 df-dm 5567 df-rn 5568 df-res 5569 df-ima 5570 df-pred 6150 df-ord 6196 df-on 6197 df-lim 6198 df-suc 6199 df-iota 6316 df-fun 6359 df-fn 6360 df-f 6361 df-f1 6362 df-fo 6363 df-f1o 6364 df-fv 6365 df-isom 6366 df-riota 7116 df-ov 7161 df-oprab 7162 df-mpo 7163 df-of 7411 df-om 7583 df-1st 7691 df-2nd 7692 df-supp 7833 df-wrecs 7949 df-recs 8010 df-rdg 8048 df-1o 8104 df-oadd 8108 df-er 8291 df-en 8512 df-dom 8513 df-sdom 8514 df-fin 8515 df-fsupp 8836 df-oi 8976 df-card 9370 df-pnf 10679 df-mnf 10680 df-xr 10681 df-ltxr 10682 df-le 10683 df-sub 10874 df-neg 10875 df-nn 11641 df-2 11703 df-n0 11901 df-z 11985 df-uz 12247 df-fz 12896 df-fzo 13037 df-seq 13373 df-hash 13694 df-ndx 16488 df-slot 16489 df-base 16491 df-sets 16492 df-ress 16493 df-plusg 16580 df-0g 16717 df-gsum 16718 df-mgm 17854 df-sgrp 17903 df-mnd 17914 df-submnd 17959 df-cntz 18449

This theorem is referenced by: gsumadd 19045 gsumzsplit 19049

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