Theorem tsmssplit 21955

Description: Split a topological group sum into two parts. (Contributed by Mario Carneiro, 19-Sep-2015.) (Proof shortened by AV, 24-Jul-2019.)

Hypotheses

Ref	Expression
tsmssplit.b	⊢ 𝐵 = (Base‘𝐺)
tsmssplit.p	⊢ + = (+g‘𝐺)
tsmssplit.1	⊢ (𝜑 → 𝐺 ∈ CMnd)
tsmssplit.2	⊢ (𝜑 → 𝐺 ∈ TopMnd)
tsmssplit.a	⊢ (𝜑 → 𝐴 ∈ 𝑉)
tsmssplit.f	⊢ (𝜑 → 𝐹:𝐴⟶𝐵)
tsmssplit.x	⊢ (𝜑 → 𝑋 ∈ (𝐺 tsums (𝐹 ↾ 𝐶)))
tsmssplit.y	⊢ (𝜑 → 𝑌 ∈ (𝐺 tsums (𝐹 ↾ 𝐷)))
tsmssplit.i	⊢ (𝜑 → (𝐶 ∩ 𝐷) = ∅)
tsmssplit.u	⊢ (𝜑 → 𝐴 = (𝐶 ∪ 𝐷))

Assertion

Ref	Expression
tsmssplit	⊢ (𝜑 → (𝑋 + 𝑌) ∈ (𝐺 tsums 𝐹))

Proof of Theorem tsmssplit

Dummy variable 𝑘 is distinct from all other variables.

Step	Hyp	Ref	Expression
1		tsmssplit.b	. . 3 ⊢ 𝐵 = (Base‘𝐺)
2		tsmssplit.p	. . 3 ⊢ + = (+g‘𝐺)
3		tsmssplit.1	. . 3 ⊢ (𝜑 → 𝐺 ∈ CMnd)
4		tsmssplit.2	. . 3 ⊢ (𝜑 → 𝐺 ∈ TopMnd)
5		tsmssplit.a	. . 3 ⊢ (𝜑 → 𝐴 ∈ 𝑉)
6		tsmssplit.f	. . . . . 6 ⊢ (𝜑 → 𝐹:𝐴⟶𝐵)
7	6	ffvelrnda 6359	. . . . 5 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝐴) → (𝐹‘𝑘) ∈ 𝐵)
8		cmnmnd 18208	. . . . . . . 8 ⊢ (𝐺 ∈ CMnd → 𝐺 ∈ Mnd)
9	3, 8	syl 17	. . . . . . 7 ⊢ (𝜑 → 𝐺 ∈ Mnd)
10		eqid 2622	. . . . . . . 8 ⊢ (0g‘𝐺) = (0g‘𝐺)
11	1, 10	mndidcl 17308	. . . . . . 7 ⊢ (𝐺 ∈ Mnd → (0g‘𝐺) ∈ 𝐵)
12	9, 11	syl 17	. . . . . 6 ⊢ (𝜑 → (0g‘𝐺) ∈ 𝐵)
13	12	adantr 481	. . . . 5 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝐴) → (0g‘𝐺) ∈ 𝐵)
14	7, 13	ifcld 4131	. . . 4 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝐴) → if(𝑘 ∈ 𝐶, (𝐹‘𝑘), (0g‘𝐺)) ∈ 𝐵)
15		eqid 2622	. . . 4 ⊢ (𝑘 ∈ 𝐴 ↦ if(𝑘 ∈ 𝐶, (𝐹‘𝑘), (0g‘𝐺))) = (𝑘 ∈ 𝐴 ↦ if(𝑘 ∈ 𝐶, (𝐹‘𝑘), (0g‘𝐺)))
16	14, 15	fmptd 6385	. . 3 ⊢ (𝜑 → (𝑘 ∈ 𝐴 ↦ if(𝑘 ∈ 𝐶, (𝐹‘𝑘), (0g‘𝐺))):𝐴⟶𝐵)
17	7, 13	ifcld 4131	. . . 4 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝐴) → if(𝑘 ∈ 𝐷, (𝐹‘𝑘), (0g‘𝐺)) ∈ 𝐵)
18		eqid 2622	. . . 4 ⊢ (𝑘 ∈ 𝐴 ↦ if(𝑘 ∈ 𝐷, (𝐹‘𝑘), (0g‘𝐺))) = (𝑘 ∈ 𝐴 ↦ if(𝑘 ∈ 𝐷, (𝐹‘𝑘), (0g‘𝐺)))
19	17, 18	fmptd 6385	. . 3 ⊢ (𝜑 → (𝑘 ∈ 𝐴 ↦ if(𝑘 ∈ 𝐷, (𝐹‘𝑘), (0g‘𝐺))):𝐴⟶𝐵)
20		tsmssplit.x	. . . 4 ⊢ (𝜑 → 𝑋 ∈ (𝐺 tsums (𝐹 ↾ 𝐶)))
21	6	feqmptd 6249	. . . . . . . 8 ⊢ (𝜑 → 𝐹 = (𝑘 ∈ 𝐴 ↦ (𝐹‘𝑘)))
22	21	reseq1d 5395	. . . . . . 7 ⊢ (𝜑 → (𝐹 ↾ 𝐶) = ((𝑘 ∈ 𝐴 ↦ (𝐹‘𝑘)) ↾ 𝐶))
23		ssun1 3776	. . . . . . . . 9 ⊢ 𝐶 ⊆ (𝐶 ∪ 𝐷)
24		tsmssplit.u	. . . . . . . . 9 ⊢ (𝜑 → 𝐴 = (𝐶 ∪ 𝐷))
25	23, 24	syl5sseqr 3654	. . . . . . . 8 ⊢ (𝜑 → 𝐶 ⊆ 𝐴)
26		iftrue 4092	. . . . . . . . . 10 ⊢ (𝑘 ∈ 𝐶 → if(𝑘 ∈ 𝐶, (𝐹‘𝑘), (0g‘𝐺)) = (𝐹‘𝑘))
27	26	mpteq2ia 4740	. . . . . . . . 9 ⊢ (𝑘 ∈ 𝐶 ↦ if(𝑘 ∈ 𝐶, (𝐹‘𝑘), (0g‘𝐺))) = (𝑘 ∈ 𝐶 ↦ (𝐹‘𝑘))
28		resmpt 5449	. . . . . . . . 9 ⊢ (𝐶 ⊆ 𝐴 → ((𝑘 ∈ 𝐴 ↦ if(𝑘 ∈ 𝐶, (𝐹‘𝑘), (0g‘𝐺))) ↾ 𝐶) = (𝑘 ∈ 𝐶 ↦ if(𝑘 ∈ 𝐶, (𝐹‘𝑘), (0g‘𝐺))))
29		resmpt 5449	. . . . . . . . 9 ⊢ (𝐶 ⊆ 𝐴 → ((𝑘 ∈ 𝐴 ↦ (𝐹‘𝑘)) ↾ 𝐶) = (𝑘 ∈ 𝐶 ↦ (𝐹‘𝑘)))
30	27, 28, 29	3eqtr4a 2682	. . . . . . . 8 ⊢ (𝐶 ⊆ 𝐴 → ((𝑘 ∈ 𝐴 ↦ if(𝑘 ∈ 𝐶, (𝐹‘𝑘), (0g‘𝐺))) ↾ 𝐶) = ((𝑘 ∈ 𝐴 ↦ (𝐹‘𝑘)) ↾ 𝐶))
31	25, 30	syl 17	. . . . . . 7 ⊢ (𝜑 → ((𝑘 ∈ 𝐴 ↦ if(𝑘 ∈ 𝐶, (𝐹‘𝑘), (0g‘𝐺))) ↾ 𝐶) = ((𝑘 ∈ 𝐴 ↦ (𝐹‘𝑘)) ↾ 𝐶))
32	22, 31	eqtr4d 2659	. . . . . 6 ⊢ (𝜑 → (𝐹 ↾ 𝐶) = ((𝑘 ∈ 𝐴 ↦ if(𝑘 ∈ 𝐶, (𝐹‘𝑘), (0g‘𝐺))) ↾ 𝐶))
33	32	oveq2d 6666	. . . . 5 ⊢ (𝜑 → (𝐺 tsums (𝐹 ↾ 𝐶)) = (𝐺 tsums ((𝑘 ∈ 𝐴 ↦ if(𝑘 ∈ 𝐶, (𝐹‘𝑘), (0g‘𝐺))) ↾ 𝐶)))
34		tmdtps 21880	. . . . . . 7 ⊢ (𝐺 ∈ TopMnd → 𝐺 ∈ TopSp)
35	4, 34	syl 17	. . . . . 6 ⊢ (𝜑 → 𝐺 ∈ TopSp)
36		eldifn 3733	. . . . . . . . 9 ⊢ (𝑘 ∈ (𝐴 ∖ 𝐶) → ¬ 𝑘 ∈ 𝐶)
37	36	adantl 482	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑘 ∈ (𝐴 ∖ 𝐶)) → ¬ 𝑘 ∈ 𝐶)
38	37	iffalsed 4097	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑘 ∈ (𝐴 ∖ 𝐶)) → if(𝑘 ∈ 𝐶, (𝐹‘𝑘), (0g‘𝐺)) = (0g‘𝐺))
39	38, 5	suppss2 7329	. . . . . 6 ⊢ (𝜑 → ((𝑘 ∈ 𝐴 ↦ if(𝑘 ∈ 𝐶, (𝐹‘𝑘), (0g‘𝐺))) supp (0g‘𝐺)) ⊆ 𝐶)
40	1, 10, 3, 35, 5, 16, 39	tsmsres 21947	. . . . 5 ⊢ (𝜑 → (𝐺 tsums ((𝑘 ∈ 𝐴 ↦ if(𝑘 ∈ 𝐶, (𝐹‘𝑘), (0g‘𝐺))) ↾ 𝐶)) = (𝐺 tsums (𝑘 ∈ 𝐴 ↦ if(𝑘 ∈ 𝐶, (𝐹‘𝑘), (0g‘𝐺)))))
41	33, 40	eqtrd 2656	. . . 4 ⊢ (𝜑 → (𝐺 tsums (𝐹 ↾ 𝐶)) = (𝐺 tsums (𝑘 ∈ 𝐴 ↦ if(𝑘 ∈ 𝐶, (𝐹‘𝑘), (0g‘𝐺)))))
42	20, 41	eleqtrd 2703	. . 3 ⊢ (𝜑 → 𝑋 ∈ (𝐺 tsums (𝑘 ∈ 𝐴 ↦ if(𝑘 ∈ 𝐶, (𝐹‘𝑘), (0g‘𝐺)))))
43		tsmssplit.y	. . . 4 ⊢ (𝜑 → 𝑌 ∈ (𝐺 tsums (𝐹 ↾ 𝐷)))
44	21	reseq1d 5395	. . . . . . 7 ⊢ (𝜑 → (𝐹 ↾ 𝐷) = ((𝑘 ∈ 𝐴 ↦ (𝐹‘𝑘)) ↾ 𝐷))
45		ssun2 3777	. . . . . . . . 9 ⊢ 𝐷 ⊆ (𝐶 ∪ 𝐷)
46	45, 24	syl5sseqr 3654	. . . . . . . 8 ⊢ (𝜑 → 𝐷 ⊆ 𝐴)
47		iftrue 4092	. . . . . . . . . 10 ⊢ (𝑘 ∈ 𝐷 → if(𝑘 ∈ 𝐷, (𝐹‘𝑘), (0g‘𝐺)) = (𝐹‘𝑘))
48	47	mpteq2ia 4740	. . . . . . . . 9 ⊢ (𝑘 ∈ 𝐷 ↦ if(𝑘 ∈ 𝐷, (𝐹‘𝑘), (0g‘𝐺))) = (𝑘 ∈ 𝐷 ↦ (𝐹‘𝑘))
49		resmpt 5449	. . . . . . . . 9 ⊢ (𝐷 ⊆ 𝐴 → ((𝑘 ∈ 𝐴 ↦ if(𝑘 ∈ 𝐷, (𝐹‘𝑘), (0g‘𝐺))) ↾ 𝐷) = (𝑘 ∈ 𝐷 ↦ if(𝑘 ∈ 𝐷, (𝐹‘𝑘), (0g‘𝐺))))
50		resmpt 5449	. . . . . . . . 9 ⊢ (𝐷 ⊆ 𝐴 → ((𝑘 ∈ 𝐴 ↦ (𝐹‘𝑘)) ↾ 𝐷) = (𝑘 ∈ 𝐷 ↦ (𝐹‘𝑘)))
51	48, 49, 50	3eqtr4a 2682	. . . . . . . 8 ⊢ (𝐷 ⊆ 𝐴 → ((𝑘 ∈ 𝐴 ↦ if(𝑘 ∈ 𝐷, (𝐹‘𝑘), (0g‘𝐺))) ↾ 𝐷) = ((𝑘 ∈ 𝐴 ↦ (𝐹‘𝑘)) ↾ 𝐷))
52	46, 51	syl 17	. . . . . . 7 ⊢ (𝜑 → ((𝑘 ∈ 𝐴 ↦ if(𝑘 ∈ 𝐷, (𝐹‘𝑘), (0g‘𝐺))) ↾ 𝐷) = ((𝑘 ∈ 𝐴 ↦ (𝐹‘𝑘)) ↾ 𝐷))
53	44, 52	eqtr4d 2659	. . . . . 6 ⊢ (𝜑 → (𝐹 ↾ 𝐷) = ((𝑘 ∈ 𝐴 ↦ if(𝑘 ∈ 𝐷, (𝐹‘𝑘), (0g‘𝐺))) ↾ 𝐷))
54	53	oveq2d 6666	. . . . 5 ⊢ (𝜑 → (𝐺 tsums (𝐹 ↾ 𝐷)) = (𝐺 tsums ((𝑘 ∈ 𝐴 ↦ if(𝑘 ∈ 𝐷, (𝐹‘𝑘), (0g‘𝐺))) ↾ 𝐷)))
55		eldifn 3733	. . . . . . . . 9 ⊢ (𝑘 ∈ (𝐴 ∖ 𝐷) → ¬ 𝑘 ∈ 𝐷)
56	55	adantl 482	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑘 ∈ (𝐴 ∖ 𝐷)) → ¬ 𝑘 ∈ 𝐷)
57	56	iffalsed 4097	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑘 ∈ (𝐴 ∖ 𝐷)) → if(𝑘 ∈ 𝐷, (𝐹‘𝑘), (0g‘𝐺)) = (0g‘𝐺))
58	57, 5	suppss2 7329	. . . . . 6 ⊢ (𝜑 → ((𝑘 ∈ 𝐴 ↦ if(𝑘 ∈ 𝐷, (𝐹‘𝑘), (0g‘𝐺))) supp (0g‘𝐺)) ⊆ 𝐷)
59	1, 10, 3, 35, 5, 19, 58	tsmsres 21947	. . . . 5 ⊢ (𝜑 → (𝐺 tsums ((𝑘 ∈ 𝐴 ↦ if(𝑘 ∈ 𝐷, (𝐹‘𝑘), (0g‘𝐺))) ↾ 𝐷)) = (𝐺 tsums (𝑘 ∈ 𝐴 ↦ if(𝑘 ∈ 𝐷, (𝐹‘𝑘), (0g‘𝐺)))))
60	54, 59	eqtrd 2656	. . . 4 ⊢ (𝜑 → (𝐺 tsums (𝐹 ↾ 𝐷)) = (𝐺 tsums (𝑘 ∈ 𝐴 ↦ if(𝑘 ∈ 𝐷, (𝐹‘𝑘), (0g‘𝐺)))))
61	43, 60	eleqtrd 2703	. . 3 ⊢ (𝜑 → 𝑌 ∈ (𝐺 tsums (𝑘 ∈ 𝐴 ↦ if(𝑘 ∈ 𝐷, (𝐹‘𝑘), (0g‘𝐺)))))
62	1, 2, 3, 4, 5, 16, 19, 42, 61	tsmsadd 21950	. 2 ⊢ (𝜑 → (𝑋 + 𝑌) ∈ (𝐺 tsums ((𝑘 ∈ 𝐴 ↦ if(𝑘 ∈ 𝐶, (𝐹‘𝑘), (0g‘𝐺))) ∘𝑓 + (𝑘 ∈ 𝐴 ↦ if(𝑘 ∈ 𝐷, (𝐹‘𝑘), (0g‘𝐺))))))
63	26	adantl 482	. . . . . . . . 9 ⊢ (((𝜑 ∧ 𝑘 ∈ 𝐴) ∧ 𝑘 ∈ 𝐶) → if(𝑘 ∈ 𝐶, (𝐹‘𝑘), (0g‘𝐺)) = (𝐹‘𝑘))
64		tsmssplit.i	. . . . . . . . . . . . . . 15 ⊢ (𝜑 → (𝐶 ∩ 𝐷) = ∅)
65		noel 3919	. . . . . . . . . . . . . . . 16 ⊢ ¬ 𝑘 ∈ ∅
66		eleq2 2690	. . . . . . . . . . . . . . . 16 ⊢ ((𝐶 ∩ 𝐷) = ∅ → (𝑘 ∈ (𝐶 ∩ 𝐷) ↔ 𝑘 ∈ ∅))
67	65, 66	mtbiri 317	. . . . . . . . . . . . . . 15 ⊢ ((𝐶 ∩ 𝐷) = ∅ → ¬ 𝑘 ∈ (𝐶 ∩ 𝐷))
68	64, 67	syl 17	. . . . . . . . . . . . . 14 ⊢ (𝜑 → ¬ 𝑘 ∈ (𝐶 ∩ 𝐷))
69	68	adantr 481	. . . . . . . . . . . . 13 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝐴) → ¬ 𝑘 ∈ (𝐶 ∩ 𝐷))
70		elin 3796	. . . . . . . . . . . . 13 ⊢ (𝑘 ∈ (𝐶 ∩ 𝐷) ↔ (𝑘 ∈ 𝐶 ∧ 𝑘 ∈ 𝐷))
71	69, 70	sylnib 318	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝐴) → ¬ (𝑘 ∈ 𝐶 ∧ 𝑘 ∈ 𝐷))
72		imnan 438	. . . . . . . . . . . 12 ⊢ ((𝑘 ∈ 𝐶 → ¬ 𝑘 ∈ 𝐷) ↔ ¬ (𝑘 ∈ 𝐶 ∧ 𝑘 ∈ 𝐷))
73	71, 72	sylibr 224	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝐴) → (𝑘 ∈ 𝐶 → ¬ 𝑘 ∈ 𝐷))
74	73	imp 445	. . . . . . . . . 10 ⊢ (((𝜑 ∧ 𝑘 ∈ 𝐴) ∧ 𝑘 ∈ 𝐶) → ¬ 𝑘 ∈ 𝐷)
75	74	iffalsed 4097	. . . . . . . . 9 ⊢ (((𝜑 ∧ 𝑘 ∈ 𝐴) ∧ 𝑘 ∈ 𝐶) → if(𝑘 ∈ 𝐷, (𝐹‘𝑘), (0g‘𝐺)) = (0g‘𝐺))
76	63, 75	oveq12d 6668	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑘 ∈ 𝐴) ∧ 𝑘 ∈ 𝐶) → (if(𝑘 ∈ 𝐶, (𝐹‘𝑘), (0g‘𝐺)) + if(𝑘 ∈ 𝐷, (𝐹‘𝑘), (0g‘𝐺))) = ((𝐹‘𝑘) + (0g‘𝐺)))
77	1, 2, 10	mndrid 17312	. . . . . . . . . . 11 ⊢ ((𝐺 ∈ Mnd ∧ (𝐹‘𝑘) ∈ 𝐵) → ((𝐹‘𝑘) + (0g‘𝐺)) = (𝐹‘𝑘))
78	9, 77	sylan 488	. . . . . . . . . 10 ⊢ ((𝜑 ∧ (𝐹‘𝑘) ∈ 𝐵) → ((𝐹‘𝑘) + (0g‘𝐺)) = (𝐹‘𝑘))
79	7, 78	syldan 487	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝐴) → ((𝐹‘𝑘) + (0g‘𝐺)) = (𝐹‘𝑘))
80	79	adantr 481	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑘 ∈ 𝐴) ∧ 𝑘 ∈ 𝐶) → ((𝐹‘𝑘) + (0g‘𝐺)) = (𝐹‘𝑘))
81	76, 80	eqtrd 2656	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑘 ∈ 𝐴) ∧ 𝑘 ∈ 𝐶) → (if(𝑘 ∈ 𝐶, (𝐹‘𝑘), (0g‘𝐺)) + if(𝑘 ∈ 𝐷, (𝐹‘𝑘), (0g‘𝐺))) = (𝐹‘𝑘))
82	73	con2d 129	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝐴) → (𝑘 ∈ 𝐷 → ¬ 𝑘 ∈ 𝐶))
83	82	imp 445	. . . . . . . . . 10 ⊢ (((𝜑 ∧ 𝑘 ∈ 𝐴) ∧ 𝑘 ∈ 𝐷) → ¬ 𝑘 ∈ 𝐶)
84	83	iffalsed 4097	. . . . . . . . 9 ⊢ (((𝜑 ∧ 𝑘 ∈ 𝐴) ∧ 𝑘 ∈ 𝐷) → if(𝑘 ∈ 𝐶, (𝐹‘𝑘), (0g‘𝐺)) = (0g‘𝐺))
85	47	adantl 482	. . . . . . . . 9 ⊢ (((𝜑 ∧ 𝑘 ∈ 𝐴) ∧ 𝑘 ∈ 𝐷) → if(𝑘 ∈ 𝐷, (𝐹‘𝑘), (0g‘𝐺)) = (𝐹‘𝑘))
86	84, 85	oveq12d 6668	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑘 ∈ 𝐴) ∧ 𝑘 ∈ 𝐷) → (if(𝑘 ∈ 𝐶, (𝐹‘𝑘), (0g‘𝐺)) + if(𝑘 ∈ 𝐷, (𝐹‘𝑘), (0g‘𝐺))) = ((0g‘𝐺) + (𝐹‘𝑘)))
87	1, 2, 10	mndlid 17311	. . . . . . . . . . 11 ⊢ ((𝐺 ∈ Mnd ∧ (𝐹‘𝑘) ∈ 𝐵) → ((0g‘𝐺) + (𝐹‘𝑘)) = (𝐹‘𝑘))
88	9, 87	sylan 488	. . . . . . . . . 10 ⊢ ((𝜑 ∧ (𝐹‘𝑘) ∈ 𝐵) → ((0g‘𝐺) + (𝐹‘𝑘)) = (𝐹‘𝑘))
89	7, 88	syldan 487	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝐴) → ((0g‘𝐺) + (𝐹‘𝑘)) = (𝐹‘𝑘))
90	89	adantr 481	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑘 ∈ 𝐴) ∧ 𝑘 ∈ 𝐷) → ((0g‘𝐺) + (𝐹‘𝑘)) = (𝐹‘𝑘))
91	86, 90	eqtrd 2656	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑘 ∈ 𝐴) ∧ 𝑘 ∈ 𝐷) → (if(𝑘 ∈ 𝐶, (𝐹‘𝑘), (0g‘𝐺)) + if(𝑘 ∈ 𝐷, (𝐹‘𝑘), (0g‘𝐺))) = (𝐹‘𝑘))
92	24	eleq2d 2687	. . . . . . . . 9 ⊢ (𝜑 → (𝑘 ∈ 𝐴 ↔ 𝑘 ∈ (𝐶 ∪ 𝐷)))
93		elun 3753	. . . . . . . . 9 ⊢ (𝑘 ∈ (𝐶 ∪ 𝐷) ↔ (𝑘 ∈ 𝐶 ∨ 𝑘 ∈ 𝐷))
94	92, 93	syl6bb 276	. . . . . . . 8 ⊢ (𝜑 → (𝑘 ∈ 𝐴 ↔ (𝑘 ∈ 𝐶 ∨ 𝑘 ∈ 𝐷)))
95	94	biimpa 501	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝐴) → (𝑘 ∈ 𝐶 ∨ 𝑘 ∈ 𝐷))
96	81, 91, 95	mpjaodan 827	. . . . . 6 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝐴) → (if(𝑘 ∈ 𝐶, (𝐹‘𝑘), (0g‘𝐺)) + if(𝑘 ∈ 𝐷, (𝐹‘𝑘), (0g‘𝐺))) = (𝐹‘𝑘))
97	96	mpteq2dva 4744	. . . . 5 ⊢ (𝜑 → (𝑘 ∈ 𝐴 ↦ (if(𝑘 ∈ 𝐶, (𝐹‘𝑘), (0g‘𝐺)) + if(𝑘 ∈ 𝐷, (𝐹‘𝑘), (0g‘𝐺)))) = (𝑘 ∈ 𝐴 ↦ (𝐹‘𝑘)))
98	21, 97	eqtr4d 2659	. . . 4 ⊢ (𝜑 → 𝐹 = (𝑘 ∈ 𝐴 ↦ (if(𝑘 ∈ 𝐶, (𝐹‘𝑘), (0g‘𝐺)) + if(𝑘 ∈ 𝐷, (𝐹‘𝑘), (0g‘𝐺)))))
99		eqidd 2623	. . . . 5 ⊢ (𝜑 → (𝑘 ∈ 𝐴 ↦ if(𝑘 ∈ 𝐶, (𝐹‘𝑘), (0g‘𝐺))) = (𝑘 ∈ 𝐴 ↦ if(𝑘 ∈ 𝐶, (𝐹‘𝑘), (0g‘𝐺))))
100		eqidd 2623	. . . . 5 ⊢ (𝜑 → (𝑘 ∈ 𝐴 ↦ if(𝑘 ∈ 𝐷, (𝐹‘𝑘), (0g‘𝐺))) = (𝑘 ∈ 𝐴 ↦ if(𝑘 ∈ 𝐷, (𝐹‘𝑘), (0g‘𝐺))))
101	5, 14, 17, 99, 100	offval2 6914	. . . 4 ⊢ (𝜑 → ((𝑘 ∈ 𝐴 ↦ if(𝑘 ∈ 𝐶, (𝐹‘𝑘), (0g‘𝐺))) ∘𝑓 + (𝑘 ∈ 𝐴 ↦ if(𝑘 ∈ 𝐷, (𝐹‘𝑘), (0g‘𝐺)))) = (𝑘 ∈ 𝐴 ↦ (if(𝑘 ∈ 𝐶, (𝐹‘𝑘), (0g‘𝐺)) + if(𝑘 ∈ 𝐷, (𝐹‘𝑘), (0g‘𝐺)))))
102	98, 101	eqtr4d 2659	. . 3 ⊢ (𝜑 → 𝐹 = ((𝑘 ∈ 𝐴 ↦ if(𝑘 ∈ 𝐶, (𝐹‘𝑘), (0g‘𝐺))) ∘𝑓 + (𝑘 ∈ 𝐴 ↦ if(𝑘 ∈ 𝐷, (𝐹‘𝑘), (0g‘𝐺)))))
103	102	oveq2d 6666	. 2 ⊢ (𝜑 → (𝐺 tsums 𝐹) = (𝐺 tsums ((𝑘 ∈ 𝐴 ↦ if(𝑘 ∈ 𝐶, (𝐹‘𝑘), (0g‘𝐺))) ∘𝑓 + (𝑘 ∈ 𝐴 ↦ if(𝑘 ∈ 𝐷, (𝐹‘𝑘), (0g‘𝐺))))))
104	62, 103	eleqtrrd 2704	1 ⊢ (𝜑 → (𝑋 + 𝑌) ∈ (𝐺 tsums 𝐹))

Syntax hints:  ¬ wn 3   → wi 4   ∨ wo 383   ∧ wa 384   = wceq 1483   ∈ wcel 1990   ∖ cdif 3571   ∪ cun 3572   ∩ cin 3573   ⊆ wss 3574  ∅c0 3915  ifcif 4086   ↦ cmpt 4729   ↾ cres 5116  ⟶wf 5884  ‘cfv 5888  (class class class)co 6650   ∘_𝑓 cof 6895  Basecbs 15857  +_gcplusg 15941  0_gc0g 16100  Mndcmnd 17294  CMndccmn 18193  TopSpctps 20736  TopMndctmd 21874   tsums ctsu 21929

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1722  ax-4 1737  ax-5 1839  ax-6 1888  ax-7 1935  ax-8 1992  ax-9 1999  ax-10 2019  ax-11 2034  ax-12 2047  ax-13 2246  ax-ext 2602  ax-rep 4771  ax-sep 4781  ax-nul 4789  ax-pow 4843  ax-pr 4906  ax-un 6949  ax-cnex 9992  ax-resscn 9993  ax-1cn 9994  ax-icn 9995  ax-addcl 9996  ax-addrcl 9997  ax-mulcl 9998  ax-mulrcl 9999  ax-mulcom 10000  ax-addass 10001  ax-mulass 10002  ax-distr 10003  ax-i2m1 10004  ax-1ne0 10005  ax-1rid 10006  ax-rnegex 10007  ax-rrecex 10008  ax-cnre 10009  ax-pre-lttri 10010  ax-pre-lttrn 10011  ax-pre-ltadd 10012  ax-pre-mulgt0 10013

This theorem depends on definitions:  df-bi 197  df-or 385  df-an 386  df-3or 1038  df-3an 1039  df-tru 1486  df-ex 1705  df-nf 1710  df-sb 1881  df-eu 2474  df-mo 2475  df-clab 2609  df-cleq 2615  df-clel 2618  df-nfc 2753  df-ne 2795  df-nel 2898  df-ral 2917  df-rex 2918  df-reu 2919  df-rmo 2920  df-rab 2921  df-v 3202  df-sbc 3436  df-csb 3534  df-dif 3577  df-un 3579  df-in 3581  df-ss 3588  df-pss 3590  df-nul 3916  df-if 4087  df-pw 4160  df-sn 4178  df-pr 4180  df-tp 4182  df-op 4184  df-uni 4437  df-int 4476  df-iun 4522  df-br 4654  df-opab 4713  df-mpt 4730  df-tr 4753  df-id 5024  df-eprel 5029  df-po 5035  df-so 5036  df-fr 5073  df-se 5074  df-we 5075  df-xp 5120  df-rel 5121  df-cnv 5122  df-co 5123  df-dm 5124  df-rn 5125  df-res 5126  df-ima 5127  df-pred 5680  df-ord 5726  df-on 5727  df-lim 5728  df-suc 5729  df-iota 5851  df-fun 5890  df-fn 5891  df-f 5892  df-f1 5893  df-fo 5894  df-f1o 5895  df-fv 5896  df-isom 5897  df-riota 6611  df-ov 6653  df-oprab 6654  df-mpt2 6655  df-of 6897  df-om 7066  df-1st 7168  df-2nd 7169  df-supp 7296  df-wrecs 7407  df-recs 7468  df-rdg 7506  df-1o 7560  df-oadd 7564  df-er 7742  df-map 7859  df-en 7956  df-dom 7957  df-sdom 7958  df-fin 7959  df-fsupp 8276  df-oi 8415  df-card 8765  df-pnf 10076  df-mnf 10077  df-xr 10078  df-ltxr 10079  df-le 10080  df-sub 10268  df-neg 10269  df-nn 11021  df-2 11079  df-n0 11293  df-z 11378  df-uz 11688  df-fz 12327  df-fzo 12466  df-seq 12802  df-hash 13118  df-ndx 15860  df-slot 15861  df-base 15863  df-sets 15864  df-ress 15865  df-plusg 15954  df-0g 16102  df-gsum 16103  df-topgen 16104  df-plusf 17241  df-mgm 17242  df-sgrp 17284  df-mnd 17295  df-submnd 17336  df-cntz 17750  df-cmn 18195  df-fbas 19743  df-fg 19744  df-top 20699  df-topon 20716  df-topsp 20737  df-bases 20750  df-ntr 20824  df-nei 20902  df-cn 21031  df-cnp 21032  df-tx 21365  df-fil 21650  df-fm 21742  df-flim 21743  df-flf 21744  df-tmd 21876  df-tsms 21930

This theorem is referenced by:  esumsplit  30115