Theorem tsmssplit 24270

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	ffvelcdmda 7069	. . . . 5 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝐴) → (𝐹‘𝑘) ∈ 𝐵)
8		cmnmnd 19858	. . . . . . . 8 ⊢ (𝐺 ∈ CMnd → 𝐺 ∈ Mnd)
9	3, 8	syl 18	. . . . . . 7 ⊢ (𝜑 → 𝐺 ∈ Mnd)
10		eqid 2765	. . . . . . . 8 ⊢ (0g‘𝐺) = (0g‘𝐺)
11	1, 10	mndidcl 18797	. . . . . . 7 ⊢ (𝐺 ∈ Mnd → (0g‘𝐺) ∈ 𝐵)
12	9, 11	syl 18	. . . . . 6 ⊢ (𝜑 → (0g‘𝐺) ∈ 𝐵)
13	12	adantr 485	. . . . 5 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝐴) → (0g‘𝐺) ∈ 𝐵)
14	7, 13	ifcld 4530	. . . 4 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝐴) → if(𝑘 ∈ 𝐶, (𝐹‘𝑘), (0g‘𝐺)) ∈ 𝐵)
15	14	fmpttd 7100	. . 3 ⊢ (𝜑 → (𝑘 ∈ 𝐴 ↦ if(𝑘 ∈ 𝐶, (𝐹‘𝑘), (0g‘𝐺))):𝐴⟶𝐵)
16	7, 13	ifcld 4530	. . . 4 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝐴) → if(𝑘 ∈ 𝐷, (𝐹‘𝑘), (0g‘𝐺)) ∈ 𝐵)
17	16	fmpttd 7100	. . 3 ⊢ (𝜑 → (𝑘 ∈ 𝐴 ↦ if(𝑘 ∈ 𝐷, (𝐹‘𝑘), (0g‘𝐺))):𝐴⟶𝐵)
18		tsmssplit.x	. . . 4 ⊢ (𝜑 → 𝑋 ∈ (𝐺 tsums (𝐹 ↾ 𝐶)))
19	6	feqmptd 6939	. . . . . . . 8 ⊢ (𝜑 → 𝐹 = (𝑘 ∈ 𝐴 ↦ (𝐹‘𝑘)))
20	19	reseq1d 5968	. . . . . . 7 ⊢ (𝜑 → (𝐹 ↾ 𝐶) = ((𝑘 ∈ 𝐴 ↦ (𝐹‘𝑘)) ↾ 𝐶))
21		ssun1 4133	. . . . . . . . 9 ⊢ 𝐶 ⊆ (𝐶 ∪ 𝐷)
22		tsmssplit.u	. . . . . . . . 9 ⊢ (𝜑 → 𝐴 = (𝐶 ∪ 𝐷))
23	21, 22	sseqtrrid 3982	. . . . . . . 8 ⊢ (𝜑 → 𝐶 ⊆ 𝐴)
24		iftrue 4489	. . . . . . . . . 10 ⊢ (𝑘 ∈ 𝐶 → if(𝑘 ∈ 𝐶, (𝐹‘𝑘), (0g‘𝐺)) = (𝐹‘𝑘))
25	24	mpteq2ia 5200	. . . . . . . . 9 ⊢ (𝑘 ∈ 𝐶 ↦ if(𝑘 ∈ 𝐶, (𝐹‘𝑘), (0g‘𝐺))) = (𝑘 ∈ 𝐶 ↦ (𝐹‘𝑘))
26		resmpt 6030	. . . . . . . . 9 ⊢ (𝐶 ⊆ 𝐴 → ((𝑘 ∈ 𝐴 ↦ if(𝑘 ∈ 𝐶, (𝐹‘𝑘), (0g‘𝐺))) ↾ 𝐶) = (𝑘 ∈ 𝐶 ↦ if(𝑘 ∈ 𝐶, (𝐹‘𝑘), (0g‘𝐺))))
27		resmpt 6030	. . . . . . . . 9 ⊢ (𝐶 ⊆ 𝐴 → ((𝑘 ∈ 𝐴 ↦ (𝐹‘𝑘)) ↾ 𝐶) = (𝑘 ∈ 𝐶 ↦ (𝐹‘𝑘)))
28	25, 26, 27	3eqtr4a 2826	. . . . . . . 8 ⊢ (𝐶 ⊆ 𝐴 → ((𝑘 ∈ 𝐴 ↦ if(𝑘 ∈ 𝐶, (𝐹‘𝑘), (0g‘𝐺))) ↾ 𝐶) = ((𝑘 ∈ 𝐴 ↦ (𝐹‘𝑘)) ↾ 𝐶))
29	23, 28	syl 18	. . . . . . 7 ⊢ (𝜑 → ((𝑘 ∈ 𝐴 ↦ if(𝑘 ∈ 𝐶, (𝐹‘𝑘), (0g‘𝐺))) ↾ 𝐶) = ((𝑘 ∈ 𝐴 ↦ (𝐹‘𝑘)) ↾ 𝐶))
30	20, 29	eqtr4d 2803	. . . . . 6 ⊢ (𝜑 → (𝐹 ↾ 𝐶) = ((𝑘 ∈ 𝐴 ↦ if(𝑘 ∈ 𝐶, (𝐹‘𝑘), (0g‘𝐺))) ↾ 𝐶))
31	30	oveq2d 7416	. . . . 5 ⊢ (𝜑 → (𝐺 tsums (𝐹 ↾ 𝐶)) = (𝐺 tsums ((𝑘 ∈ 𝐴 ↦ if(𝑘 ∈ 𝐶, (𝐹‘𝑘), (0g‘𝐺))) ↾ 𝐶)))
32		tmdtps 24194	. . . . . . 7 ⊢ (𝐺 ∈ TopMnd → 𝐺 ∈ TopSp)
33	4, 32	syl 18	. . . . . 6 ⊢ (𝜑 → 𝐺 ∈ TopSp)
34		eldifn 4088	. . . . . . . . 9 ⊢ (𝑘 ∈ (𝐴 ∖ 𝐶) → ¬ 𝑘 ∈ 𝐶)
35	34	adantl 486	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑘 ∈ (𝐴 ∖ 𝐶)) → ¬ 𝑘 ∈ 𝐶)
36	35	iffalsed 4494	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑘 ∈ (𝐴 ∖ 𝐶)) → if(𝑘 ∈ 𝐶, (𝐹‘𝑘), (0g‘𝐺)) = (0g‘𝐺))
37	36, 5	suppss2 8184	. . . . . 6 ⊢ (𝜑 → ((𝑘 ∈ 𝐴 ↦ if(𝑘 ∈ 𝐶, (𝐹‘𝑘), (0g‘𝐺))) supp (0g‘𝐺)) ⊆ 𝐶)
38	1, 10, 3, 33, 5, 15, 37	tsmsres 24262	. . . . 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)))))
39	31, 38	eqtrd 2800	. . . 4 ⊢ (𝜑 → (𝐺 tsums (𝐹 ↾ 𝐶)) = (𝐺 tsums (𝑘 ∈ 𝐴 ↦ if(𝑘 ∈ 𝐶, (𝐹‘𝑘), (0g‘𝐺)))))
40	18, 39	eleqtrd 2867	. . 3 ⊢ (𝜑 → 𝑋 ∈ (𝐺 tsums (𝑘 ∈ 𝐴 ↦ if(𝑘 ∈ 𝐶, (𝐹‘𝑘), (0g‘𝐺)))))
41		tsmssplit.y	. . . 4 ⊢ (𝜑 → 𝑌 ∈ (𝐺 tsums (𝐹 ↾ 𝐷)))
42	19	reseq1d 5968	. . . . . . 7 ⊢ (𝜑 → (𝐹 ↾ 𝐷) = ((𝑘 ∈ 𝐴 ↦ (𝐹‘𝑘)) ↾ 𝐷))
43		ssun2 4134	. . . . . . . . 9 ⊢ 𝐷 ⊆ (𝐶 ∪ 𝐷)
44	43, 22	sseqtrrid 3982	. . . . . . . 8 ⊢ (𝜑 → 𝐷 ⊆ 𝐴)
45		iftrue 4489	. . . . . . . . . 10 ⊢ (𝑘 ∈ 𝐷 → if(𝑘 ∈ 𝐷, (𝐹‘𝑘), (0g‘𝐺)) = (𝐹‘𝑘))
46	45	mpteq2ia 5200	. . . . . . . . 9 ⊢ (𝑘 ∈ 𝐷 ↦ if(𝑘 ∈ 𝐷, (𝐹‘𝑘), (0g‘𝐺))) = (𝑘 ∈ 𝐷 ↦ (𝐹‘𝑘))
47		resmpt 6030	. . . . . . . . 9 ⊢ (𝐷 ⊆ 𝐴 → ((𝑘 ∈ 𝐴 ↦ if(𝑘 ∈ 𝐷, (𝐹‘𝑘), (0g‘𝐺))) ↾ 𝐷) = (𝑘 ∈ 𝐷 ↦ if(𝑘 ∈ 𝐷, (𝐹‘𝑘), (0g‘𝐺))))
48		resmpt 6030	. . . . . . . . 9 ⊢ (𝐷 ⊆ 𝐴 → ((𝑘 ∈ 𝐴 ↦ (𝐹‘𝑘)) ↾ 𝐷) = (𝑘 ∈ 𝐷 ↦ (𝐹‘𝑘)))
49	46, 47, 48	3eqtr4a 2826	. . . . . . . 8 ⊢ (𝐷 ⊆ 𝐴 → ((𝑘 ∈ 𝐴 ↦ if(𝑘 ∈ 𝐷, (𝐹‘𝑘), (0g‘𝐺))) ↾ 𝐷) = ((𝑘 ∈ 𝐴 ↦ (𝐹‘𝑘)) ↾ 𝐷))
50	44, 49	syl 18	. . . . . . 7 ⊢ (𝜑 → ((𝑘 ∈ 𝐴 ↦ if(𝑘 ∈ 𝐷, (𝐹‘𝑘), (0g‘𝐺))) ↾ 𝐷) = ((𝑘 ∈ 𝐴 ↦ (𝐹‘𝑘)) ↾ 𝐷))
51	42, 50	eqtr4d 2803	. . . . . 6 ⊢ (𝜑 → (𝐹 ↾ 𝐷) = ((𝑘 ∈ 𝐴 ↦ if(𝑘 ∈ 𝐷, (𝐹‘𝑘), (0g‘𝐺))) ↾ 𝐷))
52	51	oveq2d 7416	. . . . 5 ⊢ (𝜑 → (𝐺 tsums (𝐹 ↾ 𝐷)) = (𝐺 tsums ((𝑘 ∈ 𝐴 ↦ if(𝑘 ∈ 𝐷, (𝐹‘𝑘), (0g‘𝐺))) ↾ 𝐷)))
53		eldifn 4088	. . . . . . . . 9 ⊢ (𝑘 ∈ (𝐴 ∖ 𝐷) → ¬ 𝑘 ∈ 𝐷)
54	53	adantl 486	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑘 ∈ (𝐴 ∖ 𝐷)) → ¬ 𝑘 ∈ 𝐷)
55	54	iffalsed 4494	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑘 ∈ (𝐴 ∖ 𝐷)) → if(𝑘 ∈ 𝐷, (𝐹‘𝑘), (0g‘𝐺)) = (0g‘𝐺))
56	55, 5	suppss2 8184	. . . . . 6 ⊢ (𝜑 → ((𝑘 ∈ 𝐴 ↦ if(𝑘 ∈ 𝐷, (𝐹‘𝑘), (0g‘𝐺))) supp (0g‘𝐺)) ⊆ 𝐷)
57	1, 10, 3, 33, 5, 17, 56	tsmsres 24262	. . . . 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)))))
58	52, 57	eqtrd 2800	. . . 4 ⊢ (𝜑 → (𝐺 tsums (𝐹 ↾ 𝐷)) = (𝐺 tsums (𝑘 ∈ 𝐴 ↦ if(𝑘 ∈ 𝐷, (𝐹‘𝑘), (0g‘𝐺)))))
59	41, 58	eleqtrd 2867	. . 3 ⊢ (𝜑 → 𝑌 ∈ (𝐺 tsums (𝑘 ∈ 𝐴 ↦ if(𝑘 ∈ 𝐷, (𝐹‘𝑘), (0g‘𝐺)))))
60	1, 2, 3, 4, 5, 15, 17, 40, 59	tsmsadd 24265	. 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))))))
61	24	adantl 486	. . . . . . . . 9 ⊢ (((𝜑 ∧ 𝑘 ∈ 𝐴) ∧ 𝑘 ∈ 𝐶) → if(𝑘 ∈ 𝐶, (𝐹‘𝑘), (0g‘𝐺)) = (𝐹‘𝑘))
62		tsmssplit.i	. . . . . . . . . . . . . . 15 ⊢ (𝜑 → (𝐶 ∩ 𝐷) = ∅)
63		noel 4293	. . . . . . . . . . . . . . . 16 ⊢ ¬ 𝑘 ∈ ∅
64		eleq2 2854	. . . . . . . . . . . . . . . 16 ⊢ ((𝐶 ∩ 𝐷) = ∅ → (𝑘 ∈ (𝐶 ∩ 𝐷) ↔ 𝑘 ∈ ∅))
65	63, 64	mtbiri 330	. . . . . . . . . . . . . . 15 ⊢ ((𝐶 ∩ 𝐷) = ∅ → ¬ 𝑘 ∈ (𝐶 ∩ 𝐷))
66	62, 65	syl 18	. . . . . . . . . . . . . 14 ⊢ (𝜑 → ¬ 𝑘 ∈ (𝐶 ∩ 𝐷))
67	66	adantr 485	. . . . . . . . . . . . 13 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝐴) → ¬ 𝑘 ∈ (𝐶 ∩ 𝐷))
68		elin 3923	. . . . . . . . . . . . 13 ⊢ (𝑘 ∈ (𝐶 ∩ 𝐷) ↔ (𝑘 ∈ 𝐶 ∧ 𝑘 ∈ 𝐷))
69	67, 68	sylnib 331	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝐴) → ¬ (𝑘 ∈ 𝐶 ∧ 𝑘 ∈ 𝐷))
70		imnan 404	. . . . . . . . . . . 12 ⊢ ((𝑘 ∈ 𝐶 → ¬ 𝑘 ∈ 𝐷) ↔ ¬ (𝑘 ∈ 𝐶 ∧ 𝑘 ∈ 𝐷))
71	69, 70	sylibr 237	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝐴) → (𝑘 ∈ 𝐶 → ¬ 𝑘 ∈ 𝐷))
72	71	imp 411	. . . . . . . . . 10 ⊢ (((𝜑 ∧ 𝑘 ∈ 𝐴) ∧ 𝑘 ∈ 𝐶) → ¬ 𝑘 ∈ 𝐷)
73	72	iffalsed 4494	. . . . . . . . 9 ⊢ (((𝜑 ∧ 𝑘 ∈ 𝐴) ∧ 𝑘 ∈ 𝐶) → if(𝑘 ∈ 𝐷, (𝐹‘𝑘), (0g‘𝐺)) = (0g‘𝐺))
74	61, 73	oveq12d 7418	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑘 ∈ 𝐴) ∧ 𝑘 ∈ 𝐶) → (if(𝑘 ∈ 𝐶, (𝐹‘𝑘), (0g‘𝐺)) + if(𝑘 ∈ 𝐷, (𝐹‘𝑘), (0g‘𝐺))) = ((𝐹‘𝑘) + (0g‘𝐺)))
75	1, 2, 10	mndrid 18803	. . . . . . . . . 10 ⊢ ((𝐺 ∈ Mnd ∧ (𝐹‘𝑘) ∈ 𝐵) → ((𝐹‘𝑘) + (0g‘𝐺)) = (𝐹‘𝑘))
76	9, 7, 75	syl2an2r 697	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝐴) → ((𝐹‘𝑘) + (0g‘𝐺)) = (𝐹‘𝑘))
77	76	adantr 485	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑘 ∈ 𝐴) ∧ 𝑘 ∈ 𝐶) → ((𝐹‘𝑘) + (0g‘𝐺)) = (𝐹‘𝑘))
78	74, 77	eqtrd 2800	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑘 ∈ 𝐴) ∧ 𝑘 ∈ 𝐶) → (if(𝑘 ∈ 𝐶, (𝐹‘𝑘), (0g‘𝐺)) + if(𝑘 ∈ 𝐷, (𝐹‘𝑘), (0g‘𝐺))) = (𝐹‘𝑘))
79	71	con2d 135	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝐴) → (𝑘 ∈ 𝐷 → ¬ 𝑘 ∈ 𝐶))
80	79	imp 411	. . . . . . . . . 10 ⊢ (((𝜑 ∧ 𝑘 ∈ 𝐴) ∧ 𝑘 ∈ 𝐷) → ¬ 𝑘 ∈ 𝐶)
81	80	iffalsed 4494	. . . . . . . . 9 ⊢ (((𝜑 ∧ 𝑘 ∈ 𝐴) ∧ 𝑘 ∈ 𝐷) → if(𝑘 ∈ 𝐶, (𝐹‘𝑘), (0g‘𝐺)) = (0g‘𝐺))
82	45	adantl 486	. . . . . . . . 9 ⊢ (((𝜑 ∧ 𝑘 ∈ 𝐴) ∧ 𝑘 ∈ 𝐷) → if(𝑘 ∈ 𝐷, (𝐹‘𝑘), (0g‘𝐺)) = (𝐹‘𝑘))
83	81, 82	oveq12d 7418	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑘 ∈ 𝐴) ∧ 𝑘 ∈ 𝐷) → (if(𝑘 ∈ 𝐶, (𝐹‘𝑘), (0g‘𝐺)) + if(𝑘 ∈ 𝐷, (𝐹‘𝑘), (0g‘𝐺))) = ((0g‘𝐺) + (𝐹‘𝑘)))
84	1, 2, 10	mndlid 18802	. . . . . . . . . 10 ⊢ ((𝐺 ∈ Mnd ∧ (𝐹‘𝑘) ∈ 𝐵) → ((0g‘𝐺) + (𝐹‘𝑘)) = (𝐹‘𝑘))
85	9, 7, 84	syl2an2r 697	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝐴) → ((0g‘𝐺) + (𝐹‘𝑘)) = (𝐹‘𝑘))
86	85	adantr 485	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑘 ∈ 𝐴) ∧ 𝑘 ∈ 𝐷) → ((0g‘𝐺) + (𝐹‘𝑘)) = (𝐹‘𝑘))
87	83, 86	eqtrd 2800	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑘 ∈ 𝐴) ∧ 𝑘 ∈ 𝐷) → (if(𝑘 ∈ 𝐶, (𝐹‘𝑘), (0g‘𝐺)) + if(𝑘 ∈ 𝐷, (𝐹‘𝑘), (0g‘𝐺))) = (𝐹‘𝑘))
88	22	eleq2d 2851	. . . . . . . . 9 ⊢ (𝜑 → (𝑘 ∈ 𝐴 ↔ 𝑘 ∈ (𝐶 ∪ 𝐷)))
89		elun 4109	. . . . . . . . 9 ⊢ (𝑘 ∈ (𝐶 ∪ 𝐷) ↔ (𝑘 ∈ 𝐶 ∨ 𝑘 ∈ 𝐷))
90	88, 89	bitrdi 290	. . . . . . . 8 ⊢ (𝜑 → (𝑘 ∈ 𝐴 ↔ (𝑘 ∈ 𝐶 ∨ 𝑘 ∈ 𝐷)))
91	90	biimpa 481	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝐴) → (𝑘 ∈ 𝐶 ∨ 𝑘 ∈ 𝐷))
92	78, 87, 91	mpjaodan 973	. . . . . 6 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝐴) → (if(𝑘 ∈ 𝐶, (𝐹‘𝑘), (0g‘𝐺)) + if(𝑘 ∈ 𝐷, (𝐹‘𝑘), (0g‘𝐺))) = (𝐹‘𝑘))
93	92	mpteq2dva 5198	. . . . 5 ⊢ (𝜑 → (𝑘 ∈ 𝐴 ↦ (if(𝑘 ∈ 𝐶, (𝐹‘𝑘), (0g‘𝐺)) + if(𝑘 ∈ 𝐷, (𝐹‘𝑘), (0g‘𝐺)))) = (𝑘 ∈ 𝐴 ↦ (𝐹‘𝑘)))
94	19, 93	eqtr4d 2803	. . . 4 ⊢ (𝜑 → 𝐹 = (𝑘 ∈ 𝐴 ↦ (if(𝑘 ∈ 𝐶, (𝐹‘𝑘), (0g‘𝐺)) + if(𝑘 ∈ 𝐷, (𝐹‘𝑘), (0g‘𝐺)))))
95		eqidd 2766	. . . . 5 ⊢ (𝜑 → (𝑘 ∈ 𝐴 ↦ if(𝑘 ∈ 𝐶, (𝐹‘𝑘), (0g‘𝐺))) = (𝑘 ∈ 𝐴 ↦ if(𝑘 ∈ 𝐶, (𝐹‘𝑘), (0g‘𝐺))))
96		eqidd 2766	. . . . 5 ⊢ (𝜑 → (𝑘 ∈ 𝐴 ↦ if(𝑘 ∈ 𝐷, (𝐹‘𝑘), (0g‘𝐺))) = (𝑘 ∈ 𝐴 ↦ if(𝑘 ∈ 𝐷, (𝐹‘𝑘), (0g‘𝐺))))
97	5, 14, 16, 95, 96	offval2 7684	. . . 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)))))
98	94, 97	eqtr4d 2803	. . 3 ⊢ (𝜑 → 𝐹 = ((𝑘 ∈ 𝐴 ↦ if(𝑘 ∈ 𝐶, (𝐹‘𝑘), (0g‘𝐺))) ∘f + (𝑘 ∈ 𝐴 ↦ if(𝑘 ∈ 𝐷, (𝐹‘𝑘), (0g‘𝐺)))))
99	98	oveq2d 7416	. 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))))))
100	60, 99	eleqtrrd 2868	1 ⊢ (𝜑 → (𝑋 + 𝑌) ∈ (𝐺 tsums 𝐹))

Syntax hints:  ¬ wn 3   → wi 4   ∧ wa 400   ∨ wo 860   = wceq 1563   ∈ wcel 2145   ∖ cdif 3904   ∪ cun 3905   ∩ cin 3906   ⊆ wss 3907  ∅c0 4288  ifcif 4483   ↦ cmpt 5186   ↾ cres 5654  ⟶wf 6521  ‘cfv 6525  (class class class)co 7400   ∘_f cof 7662  Basecbs 17259  +_gcplusg 17300  0_gc0g 17482  Mndcmnd 18782  CMndccmn 19841  TopSpctps 23050  TopMndctmd 24188   tsums ctsu 24244

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1818  ax-4 1832  ax-5 1933  ax-6 1990  ax-7 2031  ax-8 2147  ax-9 2155  ax-10 2178  ax-11 2194  ax-12 2215  ax-ext 2737  ax-rep 5232  ax-sep 5251  ax-nul 5261  ax-pow 5327  ax-pr 5395  ax-un 7722  ax-cnex 11144  ax-resscn 11145  ax-1cn 11146  ax-icn 11147  ax-addcl 11148  ax-addrcl 11149  ax-mulcl 11150  ax-mulrcl 11151  ax-mulcom 11152  ax-addass 11153  ax-mulass 11154  ax-distr 11155  ax-i2m1 11156  ax-1ne0 11157  ax-1rid 11158  ax-rnegex 11159  ax-rrecex 11160  ax-cnre 11161  ax-pre-lttri 11162  ax-pre-lttrn 11163  ax-pre-ltadd 11164  ax-pre-mulgt0 11165

This theorem depends on definitions:  df-bi 210  df-an 401  df-or 861  df-3or 1102  df-3an 1103  df-tru 1566  df-fal 1576  df-ex 1803  df-nf 1807  df-sb 2094  df-mo 2569  df-eu 2599  df-clab 2744  df-cleq 2757  df-clel 2840  df-nfc 2914  df-ne 2961  df-nel 3065  df-ral 3080  df-rex 3090  df-rmo 3370  df-reu 3371  df-rab 3418  df-v 3459  df-sbc 3748  df-csb 3856  df-dif 3910  df-un 3912  df-in 3914  df-ss 3924  df-pss 3927  df-nul 4289  df-if 4484  df-pw 4560  df-sn 4586  df-pr 4588  df-op 4592  df-uni 4869  df-int 4909  df-iun 4954  df-br 5106  df-opab 5168  df-mpt 5187  df-tr 5213  df-id 5547  df-eprel 5552  df-po 5560  df-so 5561  df-fr 5605  df-se 5606  df-we 5607  df-xp 5658  df-rel 5659  df-cnv 5660  df-co 5661  df-dm 5662  df-rn 5663  df-res 5664  df-ima 5665  df-pred 6292  df-ord 6353  df-on 6354  df-lim 6355  df-suc 6356  df-iota 6481  df-fun 6527  df-fn 6528  df-f 6529  df-f1 6530  df-fo 6531  df-f1o 6532  df-fv 6533  df-isom 6534  df-riota 7357  df-ov 7403  df-oprab 7404  df-mpo 7405  df-of 7664  df-om 7851  df-1st 7974  df-2nd 7975  df-supp 8145  df-frecs 8266  df-wrecs 8297  df-recs 8346  df-rdg 8385  df-1o 8441  df-er 8682  df-map 8814  df-en 8932  df-dom 8933  df-sdom 8934  df-fin 8935  df-fsupp 9310  df-oi 9460  df-card 9913  df-pnf 11233  df-mnf 11234  df-xr 11235  df-ltxr 11236  df-le 11237  df-sub 11431  df-neg 11432  df-nn 12225  df-2 12294  df-n0 12496  df-z 12583  df-uz 12854  df-fz 13527  df-fzo 13674  df-seq 14029  df-hash 14358  df-sets 17214  df-slot 17232  df-ndx 17244  df-base 17260  df-ress 17281  df-plusg 17313  df-0g 17484  df-gsum 17485  df-topgen 17486  df-plusf 18687  df-mgm 18688  df-sgrp 18767  df-mnd 18783  df-submnd 18832  df-cntz 19378  df-cmn 19843  df-fbas 21479  df-fg 21480  df-top 23012  df-topon 23029  df-topsp 23051  df-bases 23064  df-ntr 23138  df-nei 23216  df-cn 23345  df-cnp 23346  df-tx 23680  df-fil 23964  df-fm 24056  df-flim 24057  df-flf 24058  df-tmd 24190  df-tsms 24245

This theorem is referenced by:  esumsplit  34360