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Theorem dvmptfsum 25931

Description: Function-builder for derivative, finite sums rule. (Contributed by Stefan O'Rear, 12-Nov-2014.)

**Hypotheses**
Ref	Expression
dvmptfsum.j	⊢ 𝐽 = (𝐾 ↾_t 𝑆)
dvmptfsum.k	⊢ 𝐾 = (TopOpen‘ℂ_fld)
dvmptfsum.s	⊢ (𝜑 → 𝑆 ∈ {ℝ, ℂ})
dvmptfsum.x	⊢ (𝜑 → 𝑋 ∈ 𝐽)
dvmptfsum.i	⊢ (𝜑 → 𝐼 ∈ Fin)
dvmptfsum.a	⊢ ((𝜑 ∧ 𝑖 ∈ 𝐼 ∧ 𝑥 ∈ 𝑋) → 𝐴 ∈ ℂ)
dvmptfsum.b	⊢ ((𝜑 ∧ 𝑖 ∈ 𝐼 ∧ 𝑥 ∈ 𝑋) → 𝐵 ∈ ℂ)
dvmptfsum.d	⊢ ((𝜑 ∧ 𝑖 ∈ 𝐼) → (𝑆 D (𝑥 ∈ 𝑋 ↦ 𝐴)) = (𝑥 ∈ 𝑋 ↦ 𝐵))

**Assertion**
Ref	Expression
dvmptfsum	⊢ (𝜑 → (𝑆 D (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝐼 𝐴)) = (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝐼 𝐵))

Distinct variable groups: 𝑥,𝑖,𝐼 𝜑,𝑖,𝑥 𝑆,𝑖,𝑥 𝑖,𝑋,𝑥 Allowed substitution hints: 𝐴(𝑥,𝑖) 𝐵(𝑥,𝑖) 𝐽(𝑥,𝑖) 𝐾(𝑥,𝑖)

Proof of Theorem dvmptfsum Dummy variables 𝑎 𝑏 𝑐 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		ssid 3981	. 2 ⊢ 𝐼 ⊆ 𝐼
2		dvmptfsum.i	. . 3 ⊢ (𝜑 → 𝐼 ∈ Fin)
3		sseq1 3984	. . . . . 6 ⊢ (𝑎 = ∅ → (𝑎 ⊆ 𝐼 ↔ ∅ ⊆ 𝐼))
4		sumeq1 15705	. . . . . . . . 9 ⊢ (𝑎 = ∅ → Σ𝑖 ∈ 𝑎 𝐴 = Σ𝑖 ∈ ∅ 𝐴)
5	4	mpteq2dv 5215	. . . . . . . 8 ⊢ (𝑎 = ∅ → (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑎 𝐴) = (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ ∅ 𝐴))
6	5	oveq2d 7421	. . . . . . 7 ⊢ (𝑎 = ∅ → (𝑆 D (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑎 𝐴)) = (𝑆 D (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ ∅ 𝐴)))
7		sumeq1 15705	. . . . . . . 8 ⊢ (𝑎 = ∅ → Σ𝑖 ∈ 𝑎 𝐵 = Σ𝑖 ∈ ∅ 𝐵)
8	7	mpteq2dv 5215	. . . . . . 7 ⊢ (𝑎 = ∅ → (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑎 𝐵) = (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ ∅ 𝐵))
9	6, 8	eqeq12d 2751	. . . . . 6 ⊢ (𝑎 = ∅ → ((𝑆 D (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑎 𝐴)) = (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑎 𝐵) ↔ (𝑆 D (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ ∅ 𝐴)) = (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ ∅ 𝐵)))
10	3, 9	imbi12d 344	. . . . 5 ⊢ (𝑎 = ∅ → ((𝑎 ⊆ 𝐼 → (𝑆 D (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑎 𝐴)) = (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑎 𝐵)) ↔ (∅ ⊆ 𝐼 → (𝑆 D (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ ∅ 𝐴)) = (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ ∅ 𝐵))))
11	10	imbi2d 340	. . . 4 ⊢ (𝑎 = ∅ → ((𝜑 → (𝑎 ⊆ 𝐼 → (𝑆 D (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑎 𝐴)) = (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑎 𝐵))) ↔ (𝜑 → (∅ ⊆ 𝐼 → (𝑆 D (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ ∅ 𝐴)) = (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ ∅ 𝐵)))))
12		sseq1 3984	. . . . . 6 ⊢ (𝑎 = 𝑏 → (𝑎 ⊆ 𝐼 ↔ 𝑏 ⊆ 𝐼))
13		sumeq1 15705	. . . . . . . . 9 ⊢ (𝑎 = 𝑏 → Σ𝑖 ∈ 𝑎 𝐴 = Σ𝑖 ∈ 𝑏 𝐴)
14	13	mpteq2dv 5215	. . . . . . . 8 ⊢ (𝑎 = 𝑏 → (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑎 𝐴) = (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑏 𝐴))
15	14	oveq2d 7421	. . . . . . 7 ⊢ (𝑎 = 𝑏 → (𝑆 D (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑎 𝐴)) = (𝑆 D (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑏 𝐴)))
16		sumeq1 15705	. . . . . . . 8 ⊢ (𝑎 = 𝑏 → Σ𝑖 ∈ 𝑎 𝐵 = Σ𝑖 ∈ 𝑏 𝐵)
17	16	mpteq2dv 5215	. . . . . . 7 ⊢ (𝑎 = 𝑏 → (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑎 𝐵) = (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑏 𝐵))
18	15, 17	eqeq12d 2751	. . . . . 6 ⊢ (𝑎 = 𝑏 → ((𝑆 D (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑎 𝐴)) = (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑎 𝐵) ↔ (𝑆 D (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑏 𝐴)) = (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑏 𝐵)))
19	12, 18	imbi12d 344	. . . . 5 ⊢ (𝑎 = 𝑏 → ((𝑎 ⊆ 𝐼 → (𝑆 D (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑎 𝐴)) = (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑎 𝐵)) ↔ (𝑏 ⊆ 𝐼 → (𝑆 D (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑏 𝐴)) = (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑏 𝐵))))
20	19	imbi2d 340	. . . 4 ⊢ (𝑎 = 𝑏 → ((𝜑 → (𝑎 ⊆ 𝐼 → (𝑆 D (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑎 𝐴)) = (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑎 𝐵))) ↔ (𝜑 → (𝑏 ⊆ 𝐼 → (𝑆 D (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑏 𝐴)) = (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑏 𝐵)))))
21		sseq1 3984	. . . . . 6 ⊢ (𝑎 = (𝑏 ∪ {𝑐}) → (𝑎 ⊆ 𝐼 ↔ (𝑏 ∪ {𝑐}) ⊆ 𝐼))
22		sumeq1 15705	. . . . . . . . 9 ⊢ (𝑎 = (𝑏 ∪ {𝑐}) → Σ𝑖 ∈ 𝑎 𝐴 = Σ𝑖 ∈ (𝑏 ∪ {𝑐})𝐴)
23	22	mpteq2dv 5215	. . . . . . . 8 ⊢ (𝑎 = (𝑏 ∪ {𝑐}) → (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑎 𝐴) = (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ (𝑏 ∪ {𝑐})𝐴))
24	23	oveq2d 7421	. . . . . . 7 ⊢ (𝑎 = (𝑏 ∪ {𝑐}) → (𝑆 D (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑎 𝐴)) = (𝑆 D (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ (𝑏 ∪ {𝑐})𝐴)))
25		sumeq1 15705	. . . . . . . 8 ⊢ (𝑎 = (𝑏 ∪ {𝑐}) → Σ𝑖 ∈ 𝑎 𝐵 = Σ𝑖 ∈ (𝑏 ∪ {𝑐})𝐵)
26	25	mpteq2dv 5215	. . . . . . 7 ⊢ (𝑎 = (𝑏 ∪ {𝑐}) → (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑎 𝐵) = (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ (𝑏 ∪ {𝑐})𝐵))
27	24, 26	eqeq12d 2751	. . . . . 6 ⊢ (𝑎 = (𝑏 ∪ {𝑐}) → ((𝑆 D (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑎 𝐴)) = (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑎 𝐵) ↔ (𝑆 D (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ (𝑏 ∪ {𝑐})𝐴)) = (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ (𝑏 ∪ {𝑐})𝐵)))
28	21, 27	imbi12d 344	. . . . 5 ⊢ (𝑎 = (𝑏 ∪ {𝑐}) → ((𝑎 ⊆ 𝐼 → (𝑆 D (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑎 𝐴)) = (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑎 𝐵)) ↔ ((𝑏 ∪ {𝑐}) ⊆ 𝐼 → (𝑆 D (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ (𝑏 ∪ {𝑐})𝐴)) = (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ (𝑏 ∪ {𝑐})𝐵))))
29	28	imbi2d 340	. . . 4 ⊢ (𝑎 = (𝑏 ∪ {𝑐}) → ((𝜑 → (𝑎 ⊆ 𝐼 → (𝑆 D (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑎 𝐴)) = (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑎 𝐵))) ↔ (𝜑 → ((𝑏 ∪ {𝑐}) ⊆ 𝐼 → (𝑆 D (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ (𝑏 ∪ {𝑐})𝐴)) = (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ (𝑏 ∪ {𝑐})𝐵)))))
30		sseq1 3984	. . . . . 6 ⊢ (𝑎 = 𝐼 → (𝑎 ⊆ 𝐼 ↔ 𝐼 ⊆ 𝐼))
31		sumeq1 15705	. . . . . . . . 9 ⊢ (𝑎 = 𝐼 → Σ𝑖 ∈ 𝑎 𝐴 = Σ𝑖 ∈ 𝐼 𝐴)
32	31	mpteq2dv 5215	. . . . . . . 8 ⊢ (𝑎 = 𝐼 → (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑎 𝐴) = (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝐼 𝐴))
33	32	oveq2d 7421	. . . . . . 7 ⊢ (𝑎 = 𝐼 → (𝑆 D (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑎 𝐴)) = (𝑆 D (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝐼 𝐴)))
34		sumeq1 15705	. . . . . . . 8 ⊢ (𝑎 = 𝐼 → Σ𝑖 ∈ 𝑎 𝐵 = Σ𝑖 ∈ 𝐼 𝐵)
35	34	mpteq2dv 5215	. . . . . . 7 ⊢ (𝑎 = 𝐼 → (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑎 𝐵) = (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝐼 𝐵))
36	33, 35	eqeq12d 2751	. . . . . 6 ⊢ (𝑎 = 𝐼 → ((𝑆 D (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑎 𝐴)) = (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑎 𝐵) ↔ (𝑆 D (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝐼 𝐴)) = (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝐼 𝐵)))
37	30, 36	imbi12d 344	. . . . 5 ⊢ (𝑎 = 𝐼 → ((𝑎 ⊆ 𝐼 → (𝑆 D (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑎 𝐴)) = (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑎 𝐵)) ↔ (𝐼 ⊆ 𝐼 → (𝑆 D (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝐼 𝐴)) = (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝐼 𝐵))))
38	37	imbi2d 340	. . . 4 ⊢ (𝑎 = 𝐼 → ((𝜑 → (𝑎 ⊆ 𝐼 → (𝑆 D (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑎 𝐴)) = (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑎 𝐵))) ↔ (𝜑 → (𝐼 ⊆ 𝐼 → (𝑆 D (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝐼 𝐴)) = (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝐼 𝐵)))))
39		dvmptfsum.s	. . . . . . 7 ⊢ (𝜑 → 𝑆 ∈ {ℝ, ℂ})
40		0cnd 11228	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑆) → 0 ∈ ℂ)
41		0cnd 11228	. . . . . . . 8 ⊢ (𝜑 → 0 ∈ ℂ)
42	39, 41	dvmptc 25914	. . . . . . 7 ⊢ (𝜑 → (𝑆 D (𝑥 ∈ 𝑆 ↦ 0)) = (𝑥 ∈ 𝑆 ↦ 0))
43		dvmptfsum.j	. . . . . . . . 9 ⊢ 𝐽 = (𝐾 ↾_t 𝑆)
44		dvmptfsum.k	. . . . . . . . . . 11 ⊢ 𝐾 = (TopOpen‘ℂ_fld)
45	44	cnfldtopon 24721	. . . . . . . . . 10 ⊢ 𝐾 ∈ (TopOn‘ℂ)
46		recnprss 25857	. . . . . . . . . . 11 ⊢ (𝑆 ∈ {ℝ, ℂ} → 𝑆 ⊆ ℂ)
47	39, 46	syl 17	. . . . . . . . . 10 ⊢ (𝜑 → 𝑆 ⊆ ℂ)
48		resttopon 23099	. . . . . . . . . 10 ⊢ ((𝐾 ∈ (TopOn‘ℂ) ∧ 𝑆 ⊆ ℂ) → (𝐾 ↾_t 𝑆) ∈ (TopOn‘𝑆))
49	45, 47, 48	sylancr 587	. . . . . . . . 9 ⊢ (𝜑 → (𝐾 ↾_t 𝑆) ∈ (TopOn‘𝑆))
50	43, 49	eqeltrid 2838	. . . . . . . 8 ⊢ (𝜑 → 𝐽 ∈ (TopOn‘𝑆))
51		dvmptfsum.x	. . . . . . . 8 ⊢ (𝜑 → 𝑋 ∈ 𝐽)
52		toponss 22865	. . . . . . . 8 ⊢ ((𝐽 ∈ (TopOn‘𝑆) ∧ 𝑋 ∈ 𝐽) → 𝑋 ⊆ 𝑆)
53	50, 51, 52	syl2anc 584	. . . . . . 7 ⊢ (𝜑 → 𝑋 ⊆ 𝑆)
54	39, 40, 40, 42, 53, 43, 44, 51	dvmptres 25919	. . . . . 6 ⊢ (𝜑 → (𝑆 D (𝑥 ∈ 𝑋 ↦ 0)) = (𝑥 ∈ 𝑋 ↦ 0))
55		sum0 15737	. . . . . . . 8 ⊢ Σ𝑖 ∈ ∅ 𝐴 = 0
56	55	mpteq2i 5217	. . . . . . 7 ⊢ (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ ∅ 𝐴) = (𝑥 ∈ 𝑋 ↦ 0)
57	56	oveq2i 7416	. . . . . 6 ⊢ (𝑆 D (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ ∅ 𝐴)) = (𝑆 D (𝑥 ∈ 𝑋 ↦ 0))
58		sum0 15737	. . . . . . 7 ⊢ Σ𝑖 ∈ ∅ 𝐵 = 0
59	58	mpteq2i 5217	. . . . . 6 ⊢ (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ ∅ 𝐵) = (𝑥 ∈ 𝑋 ↦ 0)
60	54, 57, 59	3eqtr4g 2795	. . . . 5 ⊢ (𝜑 → (𝑆 D (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ ∅ 𝐴)) = (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ ∅ 𝐵))
61	60	a1d 25	. . . 4 ⊢ (𝜑 → (∅ ⊆ 𝐼 → (𝑆 D (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ ∅ 𝐴)) = (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ ∅ 𝐵)))
62		ssun1 4153	. . . . . . . . . 10 ⊢ 𝑏 ⊆ (𝑏 ∪ {𝑐})
63		sstr 3967	. . . . . . . . . 10 ⊢ ((𝑏 ⊆ (𝑏 ∪ {𝑐}) ∧ (𝑏 ∪ {𝑐}) ⊆ 𝐼) → 𝑏 ⊆ 𝐼)
64	62, 63	mpan 690	. . . . . . . . 9 ⊢ ((𝑏 ∪ {𝑐}) ⊆ 𝐼 → 𝑏 ⊆ 𝐼)
65	64	imim1i 63	. . . . . . . 8 ⊢ ((𝑏 ⊆ 𝐼 → (𝑆 D (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑏 𝐴)) = (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑏 𝐵)) → ((𝑏 ∪ {𝑐}) ⊆ 𝐼 → (𝑆 D (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑏 𝐴)) = (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑏 𝐵)))
66		simpll 766	. . . . . . . . . . . . 13 ⊢ (((𝜑 ∧ ¬ 𝑐 ∈ 𝑏) ∧ ((𝑏 ∪ {𝑐}) ⊆ 𝐼 ∧ (𝑆 D (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑏 𝐴)) = (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑏 𝐵))) → 𝜑)
67	66, 39	syl 17	. . . . . . . . . . . 12 ⊢ (((𝜑 ∧ ¬ 𝑐 ∈ 𝑏) ∧ ((𝑏 ∪ {𝑐}) ⊆ 𝐼 ∧ (𝑆 D (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑏 𝐴)) = (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑏 𝐵))) → 𝑆 ∈ {ℝ, ℂ})
68	2	ad3antrrr 730	. . . . . . . . . . . . . . 15 ⊢ ((((𝜑 ∧ ¬ 𝑐 ∈ 𝑏) ∧ (𝑏 ∪ {𝑐}) ⊆ 𝐼) ∧ 𝑎 ∈ 𝑋) → 𝐼 ∈ Fin)
69	64	ad2antlr 727	. . . . . . . . . . . . . . 15 ⊢ ((((𝜑 ∧ ¬ 𝑐 ∈ 𝑏) ∧ (𝑏 ∪ {𝑐}) ⊆ 𝐼) ∧ 𝑎 ∈ 𝑋) → 𝑏 ⊆ 𝐼)
70	68, 69	ssfid 9273	. . . . . . . . . . . . . 14 ⊢ ((((𝜑 ∧ ¬ 𝑐 ∈ 𝑏) ∧ (𝑏 ∪ {𝑐}) ⊆ 𝐼) ∧ 𝑎 ∈ 𝑋) → 𝑏 ∈ Fin)
71		simp-4l 782	. . . . . . . . . . . . . . 15 ⊢ (((((𝜑 ∧ ¬ 𝑐 ∈ 𝑏) ∧ (𝑏 ∪ {𝑐}) ⊆ 𝐼) ∧ 𝑎 ∈ 𝑋) ∧ 𝑖 ∈ 𝑏) → 𝜑)
72	69	sselda 3958	. . . . . . . . . . . . . . 15 ⊢ (((((𝜑 ∧ ¬ 𝑐 ∈ 𝑏) ∧ (𝑏 ∪ {𝑐}) ⊆ 𝐼) ∧ 𝑎 ∈ 𝑋) ∧ 𝑖 ∈ 𝑏) → 𝑖 ∈ 𝐼)
73		simplr 768	. . . . . . . . . . . . . . 15 ⊢ (((((𝜑 ∧ ¬ 𝑐 ∈ 𝑏) ∧ (𝑏 ∪ {𝑐}) ⊆ 𝐼) ∧ 𝑎 ∈ 𝑋) ∧ 𝑖 ∈ 𝑏) → 𝑎 ∈ 𝑋)
74		nfv 1914	. . . . . . . . . . . . . . . . 17 ⊢ Ⅎ𝑥(𝜑 ∧ 𝑖 ∈ 𝐼 ∧ 𝑎 ∈ 𝑋)
75		nfcsb1v 3898	. . . . . . . . . . . . . . . . . 18 ⊢ Ⅎ𝑥⦋𝑎 / 𝑥⦌𝐴
76	75	nfel1 2915	. . . . . . . . . . . . . . . . 17 ⊢ Ⅎ𝑥⦋𝑎 / 𝑥⦌𝐴 ∈ ℂ
77	74, 76	nfim 1896	. . . . . . . . . . . . . . . 16 ⊢ Ⅎ𝑥((𝜑 ∧ 𝑖 ∈ 𝐼 ∧ 𝑎 ∈ 𝑋) → ⦋𝑎 / 𝑥⦌𝐴 ∈ ℂ)
78		eleq1w 2817	. . . . . . . . . . . . . . . . . 18 ⊢ (𝑥 = 𝑎 → (𝑥 ∈ 𝑋 ↔ 𝑎 ∈ 𝑋))
79	78	3anbi3d 1444	. . . . . . . . . . . . . . . . 17 ⊢ (𝑥 = 𝑎 → ((𝜑 ∧ 𝑖 ∈ 𝐼 ∧ 𝑥 ∈ 𝑋) ↔ (𝜑 ∧ 𝑖 ∈ 𝐼 ∧ 𝑎 ∈ 𝑋)))
80		csbeq1a 3888	. . . . . . . . . . . . . . . . . 18 ⊢ (𝑥 = 𝑎 → 𝐴 = ⦋𝑎 / 𝑥⦌𝐴)
81	80	eleq1d 2819	. . . . . . . . . . . . . . . . 17 ⊢ (𝑥 = 𝑎 → (𝐴 ∈ ℂ ↔ ⦋𝑎 / 𝑥⦌𝐴 ∈ ℂ))
82	79, 81	imbi12d 344	. . . . . . . . . . . . . . . 16 ⊢ (𝑥 = 𝑎 → (((𝜑 ∧ 𝑖 ∈ 𝐼 ∧ 𝑥 ∈ 𝑋) → 𝐴 ∈ ℂ) ↔ ((𝜑 ∧ 𝑖 ∈ 𝐼 ∧ 𝑎 ∈ 𝑋) → ⦋𝑎 / 𝑥⦌𝐴 ∈ ℂ)))
83		dvmptfsum.a	. . . . . . . . . . . . . . . 16 ⊢ ((𝜑 ∧ 𝑖 ∈ 𝐼 ∧ 𝑥 ∈ 𝑋) → 𝐴 ∈ ℂ)
84	77, 82, 83	chvarfv 2240	. . . . . . . . . . . . . . 15 ⊢ ((𝜑 ∧ 𝑖 ∈ 𝐼 ∧ 𝑎 ∈ 𝑋) → ⦋𝑎 / 𝑥⦌𝐴 ∈ ℂ)
85	71, 72, 73, 84	syl3anc 1373	. . . . . . . . . . . . . 14 ⊢ (((((𝜑 ∧ ¬ 𝑐 ∈ 𝑏) ∧ (𝑏 ∪ {𝑐}) ⊆ 𝐼) ∧ 𝑎 ∈ 𝑋) ∧ 𝑖 ∈ 𝑏) → ⦋𝑎 / 𝑥⦌𝐴 ∈ ℂ)
86	70, 85	fsumcl 15749	. . . . . . . . . . . . 13 ⊢ ((((𝜑 ∧ ¬ 𝑐 ∈ 𝑏) ∧ (𝑏 ∪ {𝑐}) ⊆ 𝐼) ∧ 𝑎 ∈ 𝑋) → Σ𝑖 ∈ 𝑏 ⦋𝑎 / 𝑥⦌𝐴 ∈ ℂ)
87	86	adantlrr 721	. . . . . . . . . . . 12 ⊢ ((((𝜑 ∧ ¬ 𝑐 ∈ 𝑏) ∧ ((𝑏 ∪ {𝑐}) ⊆ 𝐼 ∧ (𝑆 D (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑏 𝐴)) = (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑏 𝐵))) ∧ 𝑎 ∈ 𝑋) → Σ𝑖 ∈ 𝑏 ⦋𝑎 / 𝑥⦌𝐴 ∈ ℂ)
88		sumex 15704	. . . . . . . . . . . . 13 ⊢ Σ𝑖 ∈ 𝑏 ⦋𝑎 / 𝑥⦌𝐵 ∈ V
89	88	a1i 11	. . . . . . . . . . . 12 ⊢ ((((𝜑 ∧ ¬ 𝑐 ∈ 𝑏) ∧ ((𝑏 ∪ {𝑐}) ⊆ 𝐼 ∧ (𝑆 D (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑏 𝐴)) = (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑏 𝐵))) ∧ 𝑎 ∈ 𝑋) → Σ𝑖 ∈ 𝑏 ⦋𝑎 / 𝑥⦌𝐵 ∈ V)
90		nfcv 2898	. . . . . . . . . . . . . . . . 17 ⊢ Ⅎ𝑎Σ𝑖 ∈ 𝑏 𝐴
91		nfcv 2898	. . . . . . . . . . . . . . . . . 18 ⊢ Ⅎ𝑥𝑏
92	91, 75	nfsum 15707	. . . . . . . . . . . . . . . . 17 ⊢ Ⅎ𝑥Σ𝑖 ∈ 𝑏 ⦋𝑎 / 𝑥⦌𝐴
93	80	sumeq2sdv 15719	. . . . . . . . . . . . . . . . 17 ⊢ (𝑥 = 𝑎 → Σ𝑖 ∈ 𝑏 𝐴 = Σ𝑖 ∈ 𝑏 ⦋𝑎 / 𝑥⦌𝐴)
94	90, 92, 93	cbvmpt 5223	. . . . . . . . . . . . . . . 16 ⊢ (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑏 𝐴) = (𝑎 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑏 ⦋𝑎 / 𝑥⦌𝐴)
95	94	oveq2i 7416	. . . . . . . . . . . . . . 15 ⊢ (𝑆 D (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑏 𝐴)) = (𝑆 D (𝑎 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑏 ⦋𝑎 / 𝑥⦌𝐴))
96		nfcv 2898	. . . . . . . . . . . . . . . 16 ⊢ Ⅎ𝑎Σ𝑖 ∈ 𝑏 𝐵
97		nfcsb1v 3898	. . . . . . . . . . . . . . . . 17 ⊢ Ⅎ𝑥⦋𝑎 / 𝑥⦌𝐵
98	91, 97	nfsum 15707	. . . . . . . . . . . . . . . 16 ⊢ Ⅎ𝑥Σ𝑖 ∈ 𝑏 ⦋𝑎 / 𝑥⦌𝐵
99		csbeq1a 3888	. . . . . . . . . . . . . . . . 17 ⊢ (𝑥 = 𝑎 → 𝐵 = ⦋𝑎 / 𝑥⦌𝐵)
100	99	sumeq2sdv 15719	. . . . . . . . . . . . . . . 16 ⊢ (𝑥 = 𝑎 → Σ𝑖 ∈ 𝑏 𝐵 = Σ𝑖 ∈ 𝑏 ⦋𝑎 / 𝑥⦌𝐵)
101	96, 98, 100	cbvmpt 5223	. . . . . . . . . . . . . . 15 ⊢ (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑏 𝐵) = (𝑎 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑏 ⦋𝑎 / 𝑥⦌𝐵)
102	95, 101	eqeq12i 2753	. . . . . . . . . . . . . 14 ⊢ ((𝑆 D (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑏 𝐴)) = (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑏 𝐵) ↔ (𝑆 D (𝑎 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑏 ⦋𝑎 / 𝑥⦌𝐴)) = (𝑎 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑏 ⦋𝑎 / 𝑥⦌𝐵))
103	102	biimpi 216	. . . . . . . . . . . . 13 ⊢ ((𝑆 D (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑏 𝐴)) = (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑏 𝐵) → (𝑆 D (𝑎 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑏 ⦋𝑎 / 𝑥⦌𝐴)) = (𝑎 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑏 ⦋𝑎 / 𝑥⦌𝐵))
104	103	ad2antll 729	. . . . . . . . . . . 12 ⊢ (((𝜑 ∧ ¬ 𝑐 ∈ 𝑏) ∧ ((𝑏 ∪ {𝑐}) ⊆ 𝐼 ∧ (𝑆 D (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑏 𝐴)) = (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑏 𝐵))) → (𝑆 D (𝑎 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑏 ⦋𝑎 / 𝑥⦌𝐴)) = (𝑎 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑏 ⦋𝑎 / 𝑥⦌𝐵))
105		simplll 774	. . . . . . . . . . . . . 14 ⊢ ((((𝜑 ∧ ¬ 𝑐 ∈ 𝑏) ∧ (𝑏 ∪ {𝑐}) ⊆ 𝐼) ∧ 𝑎 ∈ 𝑋) → 𝜑)
106		ssun2 4154	. . . . . . . . . . . . . . . . 17 ⊢ {𝑐} ⊆ (𝑏 ∪ {𝑐})
107		sstr 3967	. . . . . . . . . . . . . . . . 17 ⊢ (({𝑐} ⊆ (𝑏 ∪ {𝑐}) ∧ (𝑏 ∪ {𝑐}) ⊆ 𝐼) → {𝑐} ⊆ 𝐼)
108	106, 107	mpan 690	. . . . . . . . . . . . . . . 16 ⊢ ((𝑏 ∪ {𝑐}) ⊆ 𝐼 → {𝑐} ⊆ 𝐼)
109		vex 3463	. . . . . . . . . . . . . . . . 17 ⊢ 𝑐 ∈ V
110	109	snss 4761	. . . . . . . . . . . . . . . 16 ⊢ (𝑐 ∈ 𝐼 ↔ {𝑐} ⊆ 𝐼)
111	108, 110	sylibr 234	. . . . . . . . . . . . . . 15 ⊢ ((𝑏 ∪ {𝑐}) ⊆ 𝐼 → 𝑐 ∈ 𝐼)
112	111	ad2antlr 727	. . . . . . . . . . . . . 14 ⊢ ((((𝜑 ∧ ¬ 𝑐 ∈ 𝑏) ∧ (𝑏 ∪ {𝑐}) ⊆ 𝐼) ∧ 𝑎 ∈ 𝑋) → 𝑐 ∈ 𝐼)
113		simpr 484	. . . . . . . . . . . . . 14 ⊢ ((((𝜑 ∧ ¬ 𝑐 ∈ 𝑏) ∧ (𝑏 ∪ {𝑐}) ⊆ 𝐼) ∧ 𝑎 ∈ 𝑋) → 𝑎 ∈ 𝑋)
114	83	3expb 1120	. . . . . . . . . . . . . . . . 17 ⊢ ((𝜑 ∧ (𝑖 ∈ 𝐼 ∧ 𝑥 ∈ 𝑋)) → 𝐴 ∈ ℂ)
115	114	ancom2s 650	. . . . . . . . . . . . . . . 16 ⊢ ((𝜑 ∧ (𝑥 ∈ 𝑋 ∧ 𝑖 ∈ 𝐼)) → 𝐴 ∈ ℂ)
116	115	ralrimivva 3187	. . . . . . . . . . . . . . 15 ⊢ (𝜑 → ∀𝑥 ∈ 𝑋 ∀𝑖 ∈ 𝐼 𝐴 ∈ ℂ)
117		nfcsb1v 3898	. . . . . . . . . . . . . . . . . 18 ⊢ Ⅎ𝑖⦋𝑐 / 𝑖⦌⦋𝑎 / 𝑥⦌𝐴
118	117	nfel1 2915	. . . . . . . . . . . . . . . . 17 ⊢ Ⅎ𝑖⦋𝑐 / 𝑖⦌⦋𝑎 / 𝑥⦌𝐴 ∈ ℂ
119		csbeq1a 3888	. . . . . . . . . . . . . . . . . 18 ⊢ (𝑖 = 𝑐 → ⦋𝑎 / 𝑥⦌𝐴 = ⦋𝑐 / 𝑖⦌⦋𝑎 / 𝑥⦌𝐴)
120	119	eleq1d 2819	. . . . . . . . . . . . . . . . 17 ⊢ (𝑖 = 𝑐 → (⦋𝑎 / 𝑥⦌𝐴 ∈ ℂ ↔ ⦋𝑐 / 𝑖⦌⦋𝑎 / 𝑥⦌𝐴 ∈ ℂ))
121	76, 118, 81, 120	rspc2 3610	. . . . . . . . . . . . . . . 16 ⊢ ((𝑎 ∈ 𝑋 ∧ 𝑐 ∈ 𝐼) → (∀𝑥 ∈ 𝑋 ∀𝑖 ∈ 𝐼 𝐴 ∈ ℂ → ⦋𝑐 / 𝑖⦌⦋𝑎 / 𝑥⦌𝐴 ∈ ℂ))
122	121	ancoms 458	. . . . . . . . . . . . . . 15 ⊢ ((𝑐 ∈ 𝐼 ∧ 𝑎 ∈ 𝑋) → (∀𝑥 ∈ 𝑋 ∀𝑖 ∈ 𝐼 𝐴 ∈ ℂ → ⦋𝑐 / 𝑖⦌⦋𝑎 / 𝑥⦌𝐴 ∈ ℂ))
123	116, 122	mpan9 506	. . . . . . . . . . . . . 14 ⊢ ((𝜑 ∧ (𝑐 ∈ 𝐼 ∧ 𝑎 ∈ 𝑋)) → ⦋𝑐 / 𝑖⦌⦋𝑎 / 𝑥⦌𝐴 ∈ ℂ)
124	105, 112, 113, 123	syl12anc 836	. . . . . . . . . . . . 13 ⊢ ((((𝜑 ∧ ¬ 𝑐 ∈ 𝑏) ∧ (𝑏 ∪ {𝑐}) ⊆ 𝐼) ∧ 𝑎 ∈ 𝑋) → ⦋𝑐 / 𝑖⦌⦋𝑎 / 𝑥⦌𝐴 ∈ ℂ)
125	124	adantlrr 721	. . . . . . . . . . . 12 ⊢ ((((𝜑 ∧ ¬ 𝑐 ∈ 𝑏) ∧ ((𝑏 ∪ {𝑐}) ⊆ 𝐼 ∧ (𝑆 D (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑏 𝐴)) = (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑏 𝐵))) ∧ 𝑎 ∈ 𝑋) → ⦋𝑐 / 𝑖⦌⦋𝑎 / 𝑥⦌𝐴 ∈ ℂ)
126		dvmptfsum.b	. . . . . . . . . . . . . . . . . 18 ⊢ ((𝜑 ∧ 𝑖 ∈ 𝐼 ∧ 𝑥 ∈ 𝑋) → 𝐵 ∈ ℂ)
127	126	3expb 1120	. . . . . . . . . . . . . . . . 17 ⊢ ((𝜑 ∧ (𝑖 ∈ 𝐼 ∧ 𝑥 ∈ 𝑋)) → 𝐵 ∈ ℂ)
128	127	ancom2s 650	. . . . . . . . . . . . . . . 16 ⊢ ((𝜑 ∧ (𝑥 ∈ 𝑋 ∧ 𝑖 ∈ 𝐼)) → 𝐵 ∈ ℂ)
129	128	ralrimivva 3187	. . . . . . . . . . . . . . 15 ⊢ (𝜑 → ∀𝑥 ∈ 𝑋 ∀𝑖 ∈ 𝐼 𝐵 ∈ ℂ)
130	97	nfel1 2915	. . . . . . . . . . . . . . . . 17 ⊢ Ⅎ𝑥⦋𝑎 / 𝑥⦌𝐵 ∈ ℂ
131		nfcsb1v 3898	. . . . . . . . . . . . . . . . . 18 ⊢ Ⅎ𝑖⦋𝑐 / 𝑖⦌⦋𝑎 / 𝑥⦌𝐵
132	131	nfel1 2915	. . . . . . . . . . . . . . . . 17 ⊢ Ⅎ𝑖⦋𝑐 / 𝑖⦌⦋𝑎 / 𝑥⦌𝐵 ∈ ℂ
133	99	eleq1d 2819	. . . . . . . . . . . . . . . . 17 ⊢ (𝑥 = 𝑎 → (𝐵 ∈ ℂ ↔ ⦋𝑎 / 𝑥⦌𝐵 ∈ ℂ))
134		csbeq1a 3888	. . . . . . . . . . . . . . . . . 18 ⊢ (𝑖 = 𝑐 → ⦋𝑎 / 𝑥⦌𝐵 = ⦋𝑐 / 𝑖⦌⦋𝑎 / 𝑥⦌𝐵)
135	134	eleq1d 2819	. . . . . . . . . . . . . . . . 17 ⊢ (𝑖 = 𝑐 → (⦋𝑎 / 𝑥⦌𝐵 ∈ ℂ ↔ ⦋𝑐 / 𝑖⦌⦋𝑎 / 𝑥⦌𝐵 ∈ ℂ))
136	130, 132, 133, 135	rspc2 3610	. . . . . . . . . . . . . . . 16 ⊢ ((𝑎 ∈ 𝑋 ∧ 𝑐 ∈ 𝐼) → (∀𝑥 ∈ 𝑋 ∀𝑖 ∈ 𝐼 𝐵 ∈ ℂ → ⦋𝑐 / 𝑖⦌⦋𝑎 / 𝑥⦌𝐵 ∈ ℂ))
137	136	ancoms 458	. . . . . . . . . . . . . . 15 ⊢ ((𝑐 ∈ 𝐼 ∧ 𝑎 ∈ 𝑋) → (∀𝑥 ∈ 𝑋 ∀𝑖 ∈ 𝐼 𝐵 ∈ ℂ → ⦋𝑐 / 𝑖⦌⦋𝑎 / 𝑥⦌𝐵 ∈ ℂ))
138	129, 137	mpan9 506	. . . . . . . . . . . . . 14 ⊢ ((𝜑 ∧ (𝑐 ∈ 𝐼 ∧ 𝑎 ∈ 𝑋)) → ⦋𝑐 / 𝑖⦌⦋𝑎 / 𝑥⦌𝐵 ∈ ℂ)
139	105, 112, 113, 138	syl12anc 836	. . . . . . . . . . . . 13 ⊢ ((((𝜑 ∧ ¬ 𝑐 ∈ 𝑏) ∧ (𝑏 ∪ {𝑐}) ⊆ 𝐼) ∧ 𝑎 ∈ 𝑋) → ⦋𝑐 / 𝑖⦌⦋𝑎 / 𝑥⦌𝐵 ∈ ℂ)
140	139	adantlrr 721	. . . . . . . . . . . 12 ⊢ ((((𝜑 ∧ ¬ 𝑐 ∈ 𝑏) ∧ ((𝑏 ∪ {𝑐}) ⊆ 𝐼 ∧ (𝑆 D (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑏 𝐴)) = (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑏 𝐵))) ∧ 𝑎 ∈ 𝑋) → ⦋𝑐 / 𝑖⦌⦋𝑎 / 𝑥⦌𝐵 ∈ ℂ)
141	111	ad2antrl 728	. . . . . . . . . . . . 13 ⊢ (((𝜑 ∧ ¬ 𝑐 ∈ 𝑏) ∧ ((𝑏 ∪ {𝑐}) ⊆ 𝐼 ∧ (𝑆 D (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑏 𝐴)) = (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑏 𝐵))) → 𝑐 ∈ 𝐼)
142		nfv 1914	. . . . . . . . . . . . . . . 16 ⊢ Ⅎ𝑖(𝜑 ∧ 𝑐 ∈ 𝐼)
143		nfcv 2898	. . . . . . . . . . . . . . . . . 18 ⊢ Ⅎ𝑖𝑆
144		nfcv 2898	. . . . . . . . . . . . . . . . . 18 ⊢ Ⅎ𝑖 D
145		nfcv 2898	. . . . . . . . . . . . . . . . . . 19 ⊢ Ⅎ𝑖𝑋
146		nfcsb1v 3898	. . . . . . . . . . . . . . . . . . 19 ⊢ Ⅎ𝑖⦋𝑐 / 𝑖⦌𝐴
147	145, 146	nfmpt 5219	. . . . . . . . . . . . . . . . . 18 ⊢ Ⅎ𝑖(𝑥 ∈ 𝑋 ↦ ⦋𝑐 / 𝑖⦌𝐴)
148	143, 144, 147	nfov 7435	. . . . . . . . . . . . . . . . 17 ⊢ Ⅎ𝑖(𝑆 D (𝑥 ∈ 𝑋 ↦ ⦋𝑐 / 𝑖⦌𝐴))
149		nfcsb1v 3898	. . . . . . . . . . . . . . . . . 18 ⊢ Ⅎ𝑖⦋𝑐 / 𝑖⦌𝐵
150	145, 149	nfmpt 5219	. . . . . . . . . . . . . . . . 17 ⊢ Ⅎ𝑖(𝑥 ∈ 𝑋 ↦ ⦋𝑐 / 𝑖⦌𝐵)
151	148, 150	nfeq 2912	. . . . . . . . . . . . . . . 16 ⊢ Ⅎ𝑖(𝑆 D (𝑥 ∈ 𝑋 ↦ ⦋𝑐 / 𝑖⦌𝐴)) = (𝑥 ∈ 𝑋 ↦ ⦋𝑐 / 𝑖⦌𝐵)
152	142, 151	nfim 1896	. . . . . . . . . . . . . . 15 ⊢ Ⅎ𝑖((𝜑 ∧ 𝑐 ∈ 𝐼) → (𝑆 D (𝑥 ∈ 𝑋 ↦ ⦋𝑐 / 𝑖⦌𝐴)) = (𝑥 ∈ 𝑋 ↦ ⦋𝑐 / 𝑖⦌𝐵))
153		eleq1w 2817	. . . . . . . . . . . . . . . . 17 ⊢ (𝑖 = 𝑐 → (𝑖 ∈ 𝐼 ↔ 𝑐 ∈ 𝐼))
154	153	anbi2d 630	. . . . . . . . . . . . . . . 16 ⊢ (𝑖 = 𝑐 → ((𝜑 ∧ 𝑖 ∈ 𝐼) ↔ (𝜑 ∧ 𝑐 ∈ 𝐼)))
155		csbeq1a 3888	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝑖 = 𝑐 → 𝐴 = ⦋𝑐 / 𝑖⦌𝐴)
156	155	mpteq2dv 5215	. . . . . . . . . . . . . . . . . 18 ⊢ (𝑖 = 𝑐 → (𝑥 ∈ 𝑋 ↦ 𝐴) = (𝑥 ∈ 𝑋 ↦ ⦋𝑐 / 𝑖⦌𝐴))
157	156	oveq2d 7421	. . . . . . . . . . . . . . . . 17 ⊢ (𝑖 = 𝑐 → (𝑆 D (𝑥 ∈ 𝑋 ↦ 𝐴)) = (𝑆 D (𝑥 ∈ 𝑋 ↦ ⦋𝑐 / 𝑖⦌𝐴)))
158		csbeq1a 3888	. . . . . . . . . . . . . . . . . 18 ⊢ (𝑖 = 𝑐 → 𝐵 = ⦋𝑐 / 𝑖⦌𝐵)
159	158	mpteq2dv 5215	. . . . . . . . . . . . . . . . 17 ⊢ (𝑖 = 𝑐 → (𝑥 ∈ 𝑋 ↦ 𝐵) = (𝑥 ∈ 𝑋 ↦ ⦋𝑐 / 𝑖⦌𝐵))
160	157, 159	eqeq12d 2751	. . . . . . . . . . . . . . . 16 ⊢ (𝑖 = 𝑐 → ((𝑆 D (𝑥 ∈ 𝑋 ↦ 𝐴)) = (𝑥 ∈ 𝑋 ↦ 𝐵) ↔ (𝑆 D (𝑥 ∈ 𝑋 ↦ ⦋𝑐 / 𝑖⦌𝐴)) = (𝑥 ∈ 𝑋 ↦ ⦋𝑐 / 𝑖⦌𝐵)))
161	154, 160	imbi12d 344	. . . . . . . . . . . . . . 15 ⊢ (𝑖 = 𝑐 → (((𝜑 ∧ 𝑖 ∈ 𝐼) → (𝑆 D (𝑥 ∈ 𝑋 ↦ 𝐴)) = (𝑥 ∈ 𝑋 ↦ 𝐵)) ↔ ((𝜑 ∧ 𝑐 ∈ 𝐼) → (𝑆 D (𝑥 ∈ 𝑋 ↦ ⦋𝑐 / 𝑖⦌𝐴)) = (𝑥 ∈ 𝑋 ↦ ⦋𝑐 / 𝑖⦌𝐵))))
162		dvmptfsum.d	. . . . . . . . . . . . . . 15 ⊢ ((𝜑 ∧ 𝑖 ∈ 𝐼) → (𝑆 D (𝑥 ∈ 𝑋 ↦ 𝐴)) = (𝑥 ∈ 𝑋 ↦ 𝐵))
163	152, 161, 162	chvarfv 2240	. . . . . . . . . . . . . 14 ⊢ ((𝜑 ∧ 𝑐 ∈ 𝐼) → (𝑆 D (𝑥 ∈ 𝑋 ↦ ⦋𝑐 / 𝑖⦌𝐴)) = (𝑥 ∈ 𝑋 ↦ ⦋𝑐 / 𝑖⦌𝐵))
164		nfcv 2898	. . . . . . . . . . . . . . . 16 ⊢ Ⅎ𝑎⦋𝑐 / 𝑖⦌𝐴
165		nfcv 2898	. . . . . . . . . . . . . . . . 17 ⊢ Ⅎ𝑥𝑐
166	165, 75	nfcsbw 3900	. . . . . . . . . . . . . . . 16 ⊢ Ⅎ𝑥⦋𝑐 / 𝑖⦌⦋𝑎 / 𝑥⦌𝐴
167	80	csbeq2dv 3881	. . . . . . . . . . . . . . . 16 ⊢ (𝑥 = 𝑎 → ⦋𝑐 / 𝑖⦌𝐴 = ⦋𝑐 / 𝑖⦌⦋𝑎 / 𝑥⦌𝐴)
168	164, 166, 167	cbvmpt 5223	. . . . . . . . . . . . . . 15 ⊢ (𝑥 ∈ 𝑋 ↦ ⦋𝑐 / 𝑖⦌𝐴) = (𝑎 ∈ 𝑋 ↦ ⦋𝑐 / 𝑖⦌⦋𝑎 / 𝑥⦌𝐴)
169	168	oveq2i 7416	. . . . . . . . . . . . . 14 ⊢ (𝑆 D (𝑥 ∈ 𝑋 ↦ ⦋𝑐 / 𝑖⦌𝐴)) = (𝑆 D (𝑎 ∈ 𝑋 ↦ ⦋𝑐 / 𝑖⦌⦋𝑎 / 𝑥⦌𝐴))
170		nfcv 2898	. . . . . . . . . . . . . . 15 ⊢ Ⅎ𝑎⦋𝑐 / 𝑖⦌𝐵
171	165, 97	nfcsbw 3900	. . . . . . . . . . . . . . 15 ⊢ Ⅎ𝑥⦋𝑐 / 𝑖⦌⦋𝑎 / 𝑥⦌𝐵
172	99	csbeq2dv 3881	. . . . . . . . . . . . . . 15 ⊢ (𝑥 = 𝑎 → ⦋𝑐 / 𝑖⦌𝐵 = ⦋𝑐 / 𝑖⦌⦋𝑎 / 𝑥⦌𝐵)
173	170, 171, 172	cbvmpt 5223	. . . . . . . . . . . . . 14 ⊢ (𝑥 ∈ 𝑋 ↦ ⦋𝑐 / 𝑖⦌𝐵) = (𝑎 ∈ 𝑋 ↦ ⦋𝑐 / 𝑖⦌⦋𝑎 / 𝑥⦌𝐵)
174	163, 169, 173	3eqtr3g 2793	. . . . . . . . . . . . 13 ⊢ ((𝜑 ∧ 𝑐 ∈ 𝐼) → (𝑆 D (𝑎 ∈ 𝑋 ↦ ⦋𝑐 / 𝑖⦌⦋𝑎 / 𝑥⦌𝐴)) = (𝑎 ∈ 𝑋 ↦ ⦋𝑐 / 𝑖⦌⦋𝑎 / 𝑥⦌𝐵))
175	66, 141, 174	syl2anc 584	. . . . . . . . . . . 12 ⊢ (((𝜑 ∧ ¬ 𝑐 ∈ 𝑏) ∧ ((𝑏 ∪ {𝑐}) ⊆ 𝐼 ∧ (𝑆 D (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑏 𝐴)) = (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑏 𝐵))) → (𝑆 D (𝑎 ∈ 𝑋 ↦ ⦋𝑐 / 𝑖⦌⦋𝑎 / 𝑥⦌𝐴)) = (𝑎 ∈ 𝑋 ↦ ⦋𝑐 / 𝑖⦌⦋𝑎 / 𝑥⦌𝐵))
176	67, 87, 89, 104, 125, 140, 175	dvmptadd 25916	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ ¬ 𝑐 ∈ 𝑏) ∧ ((𝑏 ∪ {𝑐}) ⊆ 𝐼 ∧ (𝑆 D (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑏 𝐴)) = (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑏 𝐵))) → (𝑆 D (𝑎 ∈ 𝑋 ↦ (Σ𝑖 ∈ 𝑏 ⦋𝑎 / 𝑥⦌𝐴 + ⦋𝑐 / 𝑖⦌⦋𝑎 / 𝑥⦌𝐴))) = (𝑎 ∈ 𝑋 ↦ (Σ𝑖 ∈ 𝑏 ⦋𝑎 / 𝑥⦌𝐵 + ⦋𝑐 / 𝑖⦌⦋𝑎 / 𝑥⦌𝐵)))
177		nfcv 2898	. . . . . . . . . . . . . . 15 ⊢ Ⅎ𝑎Σ𝑖 ∈ (𝑏 ∪ {𝑐})𝐴
178		nfcv 2898	. . . . . . . . . . . . . . . 16 ⊢ Ⅎ𝑥(𝑏 ∪ {𝑐})
179	178, 75	nfsum 15707	. . . . . . . . . . . . . . 15 ⊢ Ⅎ𝑥Σ𝑖 ∈ (𝑏 ∪ {𝑐})⦋𝑎 / 𝑥⦌𝐴
180	80	sumeq2sdv 15719	. . . . . . . . . . . . . . 15 ⊢ (𝑥 = 𝑎 → Σ𝑖 ∈ (𝑏 ∪ {𝑐})𝐴 = Σ𝑖 ∈ (𝑏 ∪ {𝑐})⦋𝑎 / 𝑥⦌𝐴)
181	177, 179, 180	cbvmpt 5223	. . . . . . . . . . . . . 14 ⊢ (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ (𝑏 ∪ {𝑐})𝐴) = (𝑎 ∈ 𝑋 ↦ Σ𝑖 ∈ (𝑏 ∪ {𝑐})⦋𝑎 / 𝑥⦌𝐴)
182		simpllr 775	. . . . . . . . . . . . . . . . . 18 ⊢ ((((𝜑 ∧ ¬ 𝑐 ∈ 𝑏) ∧ (𝑏 ∪ {𝑐}) ⊆ 𝐼) ∧ 𝑎 ∈ 𝑋) → ¬ 𝑐 ∈ 𝑏)
183		disjsn 4687	. . . . . . . . . . . . . . . . . 18 ⊢ ((𝑏 ∩ {𝑐}) = ∅ ↔ ¬ 𝑐 ∈ 𝑏)
184	182, 183	sylibr 234	. . . . . . . . . . . . . . . . 17 ⊢ ((((𝜑 ∧ ¬ 𝑐 ∈ 𝑏) ∧ (𝑏 ∪ {𝑐}) ⊆ 𝐼) ∧ 𝑎 ∈ 𝑋) → (𝑏 ∩ {𝑐}) = ∅)
185		eqidd 2736	. . . . . . . . . . . . . . . . 17 ⊢ ((((𝜑 ∧ ¬ 𝑐 ∈ 𝑏) ∧ (𝑏 ∪ {𝑐}) ⊆ 𝐼) ∧ 𝑎 ∈ 𝑋) → (𝑏 ∪ {𝑐}) = (𝑏 ∪ {𝑐}))
186		simplr 768	. . . . . . . . . . . . . . . . . 18 ⊢ ((((𝜑 ∧ ¬ 𝑐 ∈ 𝑏) ∧ (𝑏 ∪ {𝑐}) ⊆ 𝐼) ∧ 𝑎 ∈ 𝑋) → (𝑏 ∪ {𝑐}) ⊆ 𝐼)
187	68, 186	ssfid 9273	. . . . . . . . . . . . . . . . 17 ⊢ ((((𝜑 ∧ ¬ 𝑐 ∈ 𝑏) ∧ (𝑏 ∪ {𝑐}) ⊆ 𝐼) ∧ 𝑎 ∈ 𝑋) → (𝑏 ∪ {𝑐}) ∈ Fin)
188		simp-4l 782	. . . . . . . . . . . . . . . . . 18 ⊢ (((((𝜑 ∧ ¬ 𝑐 ∈ 𝑏) ∧ (𝑏 ∪ {𝑐}) ⊆ 𝐼) ∧ 𝑎 ∈ 𝑋) ∧ 𝑖 ∈ (𝑏 ∪ {𝑐})) → 𝜑)
189	186	sselda 3958	. . . . . . . . . . . . . . . . . 18 ⊢ (((((𝜑 ∧ ¬ 𝑐 ∈ 𝑏) ∧ (𝑏 ∪ {𝑐}) ⊆ 𝐼) ∧ 𝑎 ∈ 𝑋) ∧ 𝑖 ∈ (𝑏 ∪ {𝑐})) → 𝑖 ∈ 𝐼)
190		simplr 768	. . . . . . . . . . . . . . . . . 18 ⊢ (((((𝜑 ∧ ¬ 𝑐 ∈ 𝑏) ∧ (𝑏 ∪ {𝑐}) ⊆ 𝐼) ∧ 𝑎 ∈ 𝑋) ∧ 𝑖 ∈ (𝑏 ∪ {𝑐})) → 𝑎 ∈ 𝑋)
191	188, 189, 190, 84	syl3anc 1373	. . . . . . . . . . . . . . . . 17 ⊢ (((((𝜑 ∧ ¬ 𝑐 ∈ 𝑏) ∧ (𝑏 ∪ {𝑐}) ⊆ 𝐼) ∧ 𝑎 ∈ 𝑋) ∧ 𝑖 ∈ (𝑏 ∪ {𝑐})) → ⦋𝑎 / 𝑥⦌𝐴 ∈ ℂ)
192	184, 185, 187, 191	fsumsplit 15757	. . . . . . . . . . . . . . . 16 ⊢ ((((𝜑 ∧ ¬ 𝑐 ∈ 𝑏) ∧ (𝑏 ∪ {𝑐}) ⊆ 𝐼) ∧ 𝑎 ∈ 𝑋) → Σ𝑖 ∈ (𝑏 ∪ {𝑐})⦋𝑎 / 𝑥⦌𝐴 = (Σ𝑖 ∈ 𝑏 ⦋𝑎 / 𝑥⦌𝐴 + Σ𝑖 ∈ {𝑐}⦋𝑎 / 𝑥⦌𝐴))
193		sumsns 15766	. . . . . . . . . . . . . . . . . 18 ⊢ ((𝑐 ∈ V ∧ ⦋𝑐 / 𝑖⦌⦋𝑎 / 𝑥⦌𝐴 ∈ ℂ) → Σ𝑖 ∈ {𝑐}⦋𝑎 / 𝑥⦌𝐴 = ⦋𝑐 / 𝑖⦌⦋𝑎 / 𝑥⦌𝐴)
194	109, 124, 193	sylancr 587	. . . . . . . . . . . . . . . . 17 ⊢ ((((𝜑 ∧ ¬ 𝑐 ∈ 𝑏) ∧ (𝑏 ∪ {𝑐}) ⊆ 𝐼) ∧ 𝑎 ∈ 𝑋) → Σ𝑖 ∈ {𝑐}⦋𝑎 / 𝑥⦌𝐴 = ⦋𝑐 / 𝑖⦌⦋𝑎 / 𝑥⦌𝐴)
195	194	oveq2d 7421	. . . . . . . . . . . . . . . 16 ⊢ ((((𝜑 ∧ ¬ 𝑐 ∈ 𝑏) ∧ (𝑏 ∪ {𝑐}) ⊆ 𝐼) ∧ 𝑎 ∈ 𝑋) → (Σ𝑖 ∈ 𝑏 ⦋𝑎 / 𝑥⦌𝐴 + Σ𝑖 ∈ {𝑐}⦋𝑎 / 𝑥⦌𝐴) = (Σ𝑖 ∈ 𝑏 ⦋𝑎 / 𝑥⦌𝐴 + ⦋𝑐 / 𝑖⦌⦋𝑎 / 𝑥⦌𝐴))
196	192, 195	eqtrd 2770	. . . . . . . . . . . . . . 15 ⊢ ((((𝜑 ∧ ¬ 𝑐 ∈ 𝑏) ∧ (𝑏 ∪ {𝑐}) ⊆ 𝐼) ∧ 𝑎 ∈ 𝑋) → Σ𝑖 ∈ (𝑏 ∪ {𝑐})⦋𝑎 / 𝑥⦌𝐴 = (Σ𝑖 ∈ 𝑏 ⦋𝑎 / 𝑥⦌𝐴 + ⦋𝑐 / 𝑖⦌⦋𝑎 / 𝑥⦌𝐴))
197	196	mpteq2dva 5214	. . . . . . . . . . . . . 14 ⊢ (((𝜑 ∧ ¬ 𝑐 ∈ 𝑏) ∧ (𝑏 ∪ {𝑐}) ⊆ 𝐼) → (𝑎 ∈ 𝑋 ↦ Σ𝑖 ∈ (𝑏 ∪ {𝑐})⦋𝑎 / 𝑥⦌𝐴) = (𝑎 ∈ 𝑋 ↦ (Σ𝑖 ∈ 𝑏 ⦋𝑎 / 𝑥⦌𝐴 + ⦋𝑐 / 𝑖⦌⦋𝑎 / 𝑥⦌𝐴)))
198	181, 197	eqtrid 2782	. . . . . . . . . . . . 13 ⊢ (((𝜑 ∧ ¬ 𝑐 ∈ 𝑏) ∧ (𝑏 ∪ {𝑐}) ⊆ 𝐼) → (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ (𝑏 ∪ {𝑐})𝐴) = (𝑎 ∈ 𝑋 ↦ (Σ𝑖 ∈ 𝑏 ⦋𝑎 / 𝑥⦌𝐴 + ⦋𝑐 / 𝑖⦌⦋𝑎 / 𝑥⦌𝐴)))
199	198	adantrr 717	. . . . . . . . . . . 12 ⊢ (((𝜑 ∧ ¬ 𝑐 ∈ 𝑏) ∧ ((𝑏 ∪ {𝑐}) ⊆ 𝐼 ∧ (𝑆 D (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑏 𝐴)) = (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑏 𝐵))) → (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ (𝑏 ∪ {𝑐})𝐴) = (𝑎 ∈ 𝑋 ↦ (Σ𝑖 ∈ 𝑏 ⦋𝑎 / 𝑥⦌𝐴 + ⦋𝑐 / 𝑖⦌⦋𝑎 / 𝑥⦌𝐴)))
200	199	oveq2d 7421	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ ¬ 𝑐 ∈ 𝑏) ∧ ((𝑏 ∪ {𝑐}) ⊆ 𝐼 ∧ (𝑆 D (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑏 𝐴)) = (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑏 𝐵))) → (𝑆 D (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ (𝑏 ∪ {𝑐})𝐴)) = (𝑆 D (𝑎 ∈ 𝑋 ↦ (Σ𝑖 ∈ 𝑏 ⦋𝑎 / 𝑥⦌𝐴 + ⦋𝑐 / 𝑖⦌⦋𝑎 / 𝑥⦌𝐴))))
201		nfcv 2898	. . . . . . . . . . . . . 14 ⊢ Ⅎ𝑎Σ𝑖 ∈ (𝑏 ∪ {𝑐})𝐵
202	178, 97	nfsum 15707	. . . . . . . . . . . . . 14 ⊢ Ⅎ𝑥Σ𝑖 ∈ (𝑏 ∪ {𝑐})⦋𝑎 / 𝑥⦌𝐵
203	99	sumeq2sdv 15719	. . . . . . . . . . . . . 14 ⊢ (𝑥 = 𝑎 → Σ𝑖 ∈ (𝑏 ∪ {𝑐})𝐵 = Σ𝑖 ∈ (𝑏 ∪ {𝑐})⦋𝑎 / 𝑥⦌𝐵)
204	201, 202, 203	cbvmpt 5223	. . . . . . . . . . . . 13 ⊢ (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ (𝑏 ∪ {𝑐})𝐵) = (𝑎 ∈ 𝑋 ↦ Σ𝑖 ∈ (𝑏 ∪ {𝑐})⦋𝑎 / 𝑥⦌𝐵)
205	74, 130	nfim 1896	. . . . . . . . . . . . . . . . . 18 ⊢ Ⅎ𝑥((𝜑 ∧ 𝑖 ∈ 𝐼 ∧ 𝑎 ∈ 𝑋) → ⦋𝑎 / 𝑥⦌𝐵 ∈ ℂ)
206	79, 133	imbi12d 344	. . . . . . . . . . . . . . . . . 18 ⊢ (𝑥 = 𝑎 → (((𝜑 ∧ 𝑖 ∈ 𝐼 ∧ 𝑥 ∈ 𝑋) → 𝐵 ∈ ℂ) ↔ ((𝜑 ∧ 𝑖 ∈ 𝐼 ∧ 𝑎 ∈ 𝑋) → ⦋𝑎 / 𝑥⦌𝐵 ∈ ℂ)))
207	205, 206, 126	chvarfv 2240	. . . . . . . . . . . . . . . . 17 ⊢ ((𝜑 ∧ 𝑖 ∈ 𝐼 ∧ 𝑎 ∈ 𝑋) → ⦋𝑎 / 𝑥⦌𝐵 ∈ ℂ)
208	188, 189, 190, 207	syl3anc 1373	. . . . . . . . . . . . . . . 16 ⊢ (((((𝜑 ∧ ¬ 𝑐 ∈ 𝑏) ∧ (𝑏 ∪ {𝑐}) ⊆ 𝐼) ∧ 𝑎 ∈ 𝑋) ∧ 𝑖 ∈ (𝑏 ∪ {𝑐})) → ⦋𝑎 / 𝑥⦌𝐵 ∈ ℂ)
209	184, 185, 187, 208	fsumsplit 15757	. . . . . . . . . . . . . . 15 ⊢ ((((𝜑 ∧ ¬ 𝑐 ∈ 𝑏) ∧ (𝑏 ∪ {𝑐}) ⊆ 𝐼) ∧ 𝑎 ∈ 𝑋) → Σ𝑖 ∈ (𝑏 ∪ {𝑐})⦋𝑎 / 𝑥⦌𝐵 = (Σ𝑖 ∈ 𝑏 ⦋𝑎 / 𝑥⦌𝐵 + Σ𝑖 ∈ {𝑐}⦋𝑎 / 𝑥⦌𝐵))
210		sumsns 15766	. . . . . . . . . . . . . . . . 17 ⊢ ((𝑐 ∈ V ∧ ⦋𝑐 / 𝑖⦌⦋𝑎 / 𝑥⦌𝐵 ∈ ℂ) → Σ𝑖 ∈ {𝑐}⦋𝑎 / 𝑥⦌𝐵 = ⦋𝑐 / 𝑖⦌⦋𝑎 / 𝑥⦌𝐵)
211	109, 139, 210	sylancr 587	. . . . . . . . . . . . . . . 16 ⊢ ((((𝜑 ∧ ¬ 𝑐 ∈ 𝑏) ∧ (𝑏 ∪ {𝑐}) ⊆ 𝐼) ∧ 𝑎 ∈ 𝑋) → Σ𝑖 ∈ {𝑐}⦋𝑎 / 𝑥⦌𝐵 = ⦋𝑐 / 𝑖⦌⦋𝑎 / 𝑥⦌𝐵)
212	211	oveq2d 7421	. . . . . . . . . . . . . . 15 ⊢ ((((𝜑 ∧ ¬ 𝑐 ∈ 𝑏) ∧ (𝑏 ∪ {𝑐}) ⊆ 𝐼) ∧ 𝑎 ∈ 𝑋) → (Σ𝑖 ∈ 𝑏 ⦋𝑎 / 𝑥⦌𝐵 + Σ𝑖 ∈ {𝑐}⦋𝑎 / 𝑥⦌𝐵) = (Σ𝑖 ∈ 𝑏 ⦋𝑎 / 𝑥⦌𝐵 + ⦋𝑐 / 𝑖⦌⦋𝑎 / 𝑥⦌𝐵))
213	209, 212	eqtrd 2770	. . . . . . . . . . . . . 14 ⊢ ((((𝜑 ∧ ¬ 𝑐 ∈ 𝑏) ∧ (𝑏 ∪ {𝑐}) ⊆ 𝐼) ∧ 𝑎 ∈ 𝑋) → Σ𝑖 ∈ (𝑏 ∪ {𝑐})⦋𝑎 / 𝑥⦌𝐵 = (Σ𝑖 ∈ 𝑏 ⦋𝑎 / 𝑥⦌𝐵 + ⦋𝑐 / 𝑖⦌⦋𝑎 / 𝑥⦌𝐵))
214	213	mpteq2dva 5214	. . . . . . . . . . . . 13 ⊢ (((𝜑 ∧ ¬ 𝑐 ∈ 𝑏) ∧ (𝑏 ∪ {𝑐}) ⊆ 𝐼) → (𝑎 ∈ 𝑋 ↦ Σ𝑖 ∈ (𝑏 ∪ {𝑐})⦋𝑎 / 𝑥⦌𝐵) = (𝑎 ∈ 𝑋 ↦ (Σ𝑖 ∈ 𝑏 ⦋𝑎 / 𝑥⦌𝐵 + ⦋𝑐 / 𝑖⦌⦋𝑎 / 𝑥⦌𝐵)))
215	204, 214	eqtrid 2782	. . . . . . . . . . . 12 ⊢ (((𝜑 ∧ ¬ 𝑐 ∈ 𝑏) ∧ (𝑏 ∪ {𝑐}) ⊆ 𝐼) → (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ (𝑏 ∪ {𝑐})𝐵) = (𝑎 ∈ 𝑋 ↦ (Σ𝑖 ∈ 𝑏 ⦋𝑎 / 𝑥⦌𝐵 + ⦋𝑐 / 𝑖⦌⦋𝑎 / 𝑥⦌𝐵)))
216	215	adantrr 717	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ ¬ 𝑐 ∈ 𝑏) ∧ ((𝑏 ∪ {𝑐}) ⊆ 𝐼 ∧ (𝑆 D (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑏 𝐴)) = (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑏 𝐵))) → (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ (𝑏 ∪ {𝑐})𝐵) = (𝑎 ∈ 𝑋 ↦ (Σ𝑖 ∈ 𝑏 ⦋𝑎 / 𝑥⦌𝐵 + ⦋𝑐 / 𝑖⦌⦋𝑎 / 𝑥⦌𝐵)))
217	176, 200, 216	3eqtr4d 2780	. . . . . . . . . 10 ⊢ (((𝜑 ∧ ¬ 𝑐 ∈ 𝑏) ∧ ((𝑏 ∪ {𝑐}) ⊆ 𝐼 ∧ (𝑆 D (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑏 𝐴)) = (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑏 𝐵))) → (𝑆 D (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ (𝑏 ∪ {𝑐})𝐴)) = (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ (𝑏 ∪ {𝑐})𝐵))
218	217	exp32 420	. . . . . . . . 9 ⊢ ((𝜑 ∧ ¬ 𝑐 ∈ 𝑏) → ((𝑏 ∪ {𝑐}) ⊆ 𝐼 → ((𝑆 D (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑏 𝐴)) = (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑏 𝐵) → (𝑆 D (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ (𝑏 ∪ {𝑐})𝐴)) = (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ (𝑏 ∪ {𝑐})𝐵))))
219	218	a2d 29	. . . . . . . 8 ⊢ ((𝜑 ∧ ¬ 𝑐 ∈ 𝑏) → (((𝑏 ∪ {𝑐}) ⊆ 𝐼 → (𝑆 D (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑏 𝐴)) = (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑏 𝐵)) → ((𝑏 ∪ {𝑐}) ⊆ 𝐼 → (𝑆 D (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ (𝑏 ∪ {𝑐})𝐴)) = (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ (𝑏 ∪ {𝑐})𝐵))))
220	65, 219	syl5 34	. . . . . . 7 ⊢ ((𝜑 ∧ ¬ 𝑐 ∈ 𝑏) → ((𝑏 ⊆ 𝐼 → (𝑆 D (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑏 𝐴)) = (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑏 𝐵)) → ((𝑏 ∪ {𝑐}) ⊆ 𝐼 → (𝑆 D (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ (𝑏 ∪ {𝑐})𝐴)) = (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ (𝑏 ∪ {𝑐})𝐵))))
221	220	expcom 413	. . . . . 6 ⊢ (¬ 𝑐 ∈ 𝑏 → (𝜑 → ((𝑏 ⊆ 𝐼 → (𝑆 D (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑏 𝐴)) = (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑏 𝐵)) → ((𝑏 ∪ {𝑐}) ⊆ 𝐼 → (𝑆 D (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ (𝑏 ∪ {𝑐})𝐴)) = (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ (𝑏 ∪ {𝑐})𝐵)))))
222	221	adantl 481	. . . . 5 ⊢ ((𝑏 ∈ Fin ∧ ¬ 𝑐 ∈ 𝑏) → (𝜑 → ((𝑏 ⊆ 𝐼 → (𝑆 D (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑏 𝐴)) = (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑏 𝐵)) → ((𝑏 ∪ {𝑐}) ⊆ 𝐼 → (𝑆 D (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ (𝑏 ∪ {𝑐})𝐴)) = (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ (𝑏 ∪ {𝑐})𝐵)))))
223	222	a2d 29	. . . 4 ⊢ ((𝑏 ∈ Fin ∧ ¬ 𝑐 ∈ 𝑏) → ((𝜑 → (𝑏 ⊆ 𝐼 → (𝑆 D (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑏 𝐴)) = (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝑏 𝐵))) → (𝜑 → ((𝑏 ∪ {𝑐}) ⊆ 𝐼 → (𝑆 D (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ (𝑏 ∪ {𝑐})𝐴)) = (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ (𝑏 ∪ {𝑐})𝐵)))))
224	11, 20, 29, 38, 61, 223	findcard2s 9179	. . 3 ⊢ (𝐼 ∈ Fin → (𝜑 → (𝐼 ⊆ 𝐼 → (𝑆 D (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝐼 𝐴)) = (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝐼 𝐵))))
225	2, 224	mpcom 38	. 2 ⊢ (𝜑 → (𝐼 ⊆ 𝐼 → (𝑆 D (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝐼 𝐴)) = (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝐼 𝐵)))
226	1, 225	mpi 20	1 ⊢ (𝜑 → (𝑆 D (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝐼 𝐴)) = (𝑥 ∈ 𝑋 ↦ Σ𝑖 ∈ 𝐼 𝐵))

Colors of variables: wff setvar class

Syntax hints: ¬ wn 3 → wi 4 ∧ wa 395 ∧ w3a 1086 = wceq 1540 ∈ wcel 2108 ∀wral 3051 Vcvv 3459 ⦋csb 3874 ∪ cun 3924 ∩ cin 3925 ⊆ wss 3926 ∅c0 4308 {csn 4601 {cpr 4603 ↦ cmpt 5201 ‘cfv 6531 (class class class)co 7405 Fincfn 8959 ℂcc 11127 ℝcr 11128 0cc0 11129 + caddc 11132 Σcsu 15702 ↾_t crest 17434 TopOpenctopn 17435 ℂ_fldccnfld 21315 TopOnctopon 22848 D cdv 25816

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2007 ax-8 2110 ax-9 2118 ax-10 2141 ax-11 2157 ax-12 2177 ax-ext 2707 ax-rep 5249 ax-sep 5266 ax-nul 5276 ax-pow 5335 ax-pr 5402 ax-un 7729 ax-inf2 9655 ax-cnex 11185 ax-resscn 11186 ax-1cn 11187 ax-icn 11188 ax-addcl 11189 ax-addrcl 11190 ax-mulcl 11191 ax-mulrcl 11192 ax-mulcom 11193 ax-addass 11194 ax-mulass 11195 ax-distr 11196 ax-i2m1 11197 ax-1ne0 11198 ax-1rid 11199 ax-rnegex 11200 ax-rrecex 11201 ax-cnre 11202 ax-pre-lttri 11203 ax-pre-lttrn 11204 ax-pre-ltadd 11205 ax-pre-mulgt0 11206 ax-pre-sup 11207 ax-addf 11208

This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2065 df-mo 2539 df-eu 2568 df-clab 2714 df-cleq 2727 df-clel 2809 df-nfc 2885 df-ne 2933 df-nel 3037 df-ral 3052 df-rex 3061 df-rmo 3359 df-reu 3360 df-rab 3416 df-v 3461 df-sbc 3766 df-csb 3875 df-dif 3929 df-un 3931 df-in 3933 df-ss 3943 df-pss 3946 df-nul 4309 df-if 4501 df-pw 4577 df-sn 4602 df-pr 4604 df-tp 4606 df-op 4608 df-uni 4884 df-int 4923 df-iun 4969 df-iin 4970 df-br 5120 df-opab 5182 df-mpt 5202 df-tr 5230 df-id 5548 df-eprel 5553 df-po 5561 df-so 5562 df-fr 5606 df-se 5607 df-we 5608 df-xp 5660 df-rel 5661 df-cnv 5662 df-co 5663 df-dm 5664 df-rn 5665 df-res 5666 df-ima 5667 df-pred 6290 df-ord 6355 df-on 6356 df-lim 6357 df-suc 6358 df-iota 6484 df-fun 6533 df-fn 6534 df-f 6535 df-f1 6536 df-fo 6537 df-f1o 6538 df-fv 6539 df-isom 6540 df-riota 7362 df-ov 7408 df-oprab 7409 df-mpo 7410 df-of 7671 df-om 7862 df-1st 7988 df-2nd 7989 df-supp 8160 df-frecs 8280 df-wrecs 8311 df-recs 8385 df-rdg 8424 df-1o 8480 df-2o 8481 df-er 8719 df-map 8842 df-pm 8843 df-ixp 8912 df-en 8960 df-dom 8961 df-sdom 8962 df-fin 8963 df-fsupp 9374 df-fi 9423 df-sup 9454 df-inf 9455 df-oi 9524 df-card 9953 df-pnf 11271 df-mnf 11272 df-xr 11273 df-ltxr 11274 df-le 11275 df-sub 11468 df-neg 11469 df-div 11895 df-nn 12241 df-2 12303 df-3 12304 df-4 12305 df-5 12306 df-6 12307 df-7 12308 df-8 12309 df-9 12310 df-n0 12502 df-z 12589 df-dec 12709 df-uz 12853 df-q 12965 df-rp 13009 df-xneg 13128 df-xadd 13129 df-xmul 13130 df-icc 13369 df-fz 13525 df-fzo 13672 df-seq 14020 df-exp 14080 df-hash 14349 df-cj 15118 df-re 15119 df-im 15120 df-sqrt 15254 df-abs 15255 df-clim 15504 df-sum 15703 df-struct 17166 df-sets 17183 df-slot 17201 df-ndx 17213 df-base 17229 df-ress 17252 df-plusg 17284 df-mulr 17285 df-starv 17286 df-sca 17287 df-vsca 17288 df-ip 17289 df-tset 17290 df-ple 17291 df-ds 17293 df-unif 17294 df-hom 17295 df-cco 17296 df-rest 17436 df-topn 17437 df-0g 17455 df-gsum 17456 df-topgen 17457 df-pt 17458 df-prds 17461 df-xrs 17516 df-qtop 17521 df-imas 17522 df-xps 17524 df-mre 17598 df-mrc 17599 df-acs 17601 df-mgm 18618 df-sgrp 18697 df-mnd 18713 df-submnd 18762 df-mulg 19051 df-cntz 19300 df-cmn 19763 df-psmet 21307 df-xmet 21308 df-met 21309 df-bl 21310 df-mopn 21311 df-fbas 21312 df-fg 21313 df-cnfld 21316 df-top 22832 df-topon 22849 df-topsp 22871 df-bases 22884 df-cld 22957 df-ntr 22958 df-cls 22959 df-nei 23036 df-lp 23074 df-perf 23075 df-cn 23165 df-cnp 23166 df-haus 23253 df-tx 23500 df-hmeo 23693 df-fil 23784 df-fm 23876 df-flim 23877 df-flf 23878 df-xms 24259 df-ms 24260 df-tms 24261 df-cncf 24822 df-limc 25819 df-dv 25820

This theorem is referenced by: dvply1 26243 dvtaylp 26330 pserdvlem2 26390 advlogexp 26616 dvnmul 45972 dirkeritg 46131 etransclem2 46265

W3C validator