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Theorem dvfsumlem1 26000

Description: Lemma for dvfsumrlim 26006. (Contributed by Mario Carneiro, 17-May-2016.)

**Hypotheses**
Ref	Expression
dvfsum.s	⊢ 𝑆 = (𝑇(,)+∞)
dvfsum.z	⊢ 𝑍 = (ℤ_≥‘𝑀)
dvfsum.m	⊢ (𝜑 → 𝑀 ∈ ℤ)
dvfsum.d	⊢ (𝜑 → 𝐷 ∈ ℝ)
dvfsum.md	⊢ (𝜑 → 𝑀 ≤ (𝐷 + 1))
dvfsum.t	⊢ (𝜑 → 𝑇 ∈ ℝ)
dvfsum.a	⊢ ((𝜑 ∧ 𝑥 ∈ 𝑆) → 𝐴 ∈ ℝ)
dvfsum.b1	⊢ ((𝜑 ∧ 𝑥 ∈ 𝑆) → 𝐵 ∈ 𝑉)
dvfsum.b2	⊢ ((𝜑 ∧ 𝑥 ∈ 𝑍) → 𝐵 ∈ ℝ)
dvfsum.b3	⊢ (𝜑 → (ℝ D (𝑥 ∈ 𝑆 ↦ 𝐴)) = (𝑥 ∈ 𝑆 ↦ 𝐵))
dvfsum.c	⊢ (𝑥 = 𝑘 → 𝐵 = 𝐶)
dvfsum.u	⊢ (𝜑 → 𝑈 ∈ ℝ^*)
dvfsum.l	⊢ ((𝜑 ∧ (𝑥 ∈ 𝑆 ∧ 𝑘 ∈ 𝑆) ∧ (𝐷 ≤ 𝑥 ∧ 𝑥 ≤ 𝑘 ∧ 𝑘 ≤ 𝑈)) → 𝐶 ≤ 𝐵)
dvfsum.h	⊢ 𝐻 = (𝑥 ∈ 𝑆 ↦ (((𝑥 − (⌊‘𝑥)) · 𝐵) + (Σ𝑘 ∈ (𝑀...(⌊‘𝑥))𝐶 − 𝐴)))
dvfsumlem1.1	⊢ (𝜑 → 𝑋 ∈ 𝑆)
dvfsumlem1.2	⊢ (𝜑 → 𝑌 ∈ 𝑆)
dvfsumlem1.3	⊢ (𝜑 → 𝐷 ≤ 𝑋)
dvfsumlem1.4	⊢ (𝜑 → 𝑋 ≤ 𝑌)
dvfsumlem1.5	⊢ (𝜑 → 𝑌 ≤ 𝑈)
dvfsumlem1.6	⊢ (𝜑 → 𝑌 ≤ ((⌊‘𝑋) + 1))

**Assertion**
Ref	Expression
dvfsumlem1	⊢ (𝜑 → (𝐻‘𝑌) = ((((𝑌 − (⌊‘𝑋)) · ⦋𝑌 / 𝑥⦌𝐵) − ⦋𝑌 / 𝑥⦌𝐴) + Σ𝑘 ∈ (𝑀...(⌊‘𝑋))𝐶))

Distinct variable groups: 𝐵,𝑘 𝑥,𝐶 𝑥,𝑘,𝐷 𝜑,𝑘,𝑥 𝑆,𝑘,𝑥 𝑘,𝑀,𝑥 𝑥,𝑇 𝑘,𝑌,𝑥 𝑥,𝑍 𝑈,𝑘,𝑥 𝑘,𝑋,𝑥 Allowed substitution hints: 𝐴(𝑥,𝑘) 𝐵(𝑥) 𝐶(𝑘) 𝑇(𝑘) 𝐻(𝑥,𝑘) 𝑉(𝑥,𝑘) 𝑍(𝑘)

**Proof of Theorem dvfsumlem1**
Step	Hyp	Ref	Expression
1		dvfsum.s	. . . . . . . . . 10 ⊢ 𝑆 = (𝑇(,)+∞)
2		ioossre 13335	. . . . . . . . . 10 ⊢ (𝑇(,)+∞) ⊆ ℝ
3	1, 2	eqsstri 3982	. . . . . . . . 9 ⊢ 𝑆 ⊆ ℝ
4		dvfsumlem1.2	. . . . . . . . 9 ⊢ (𝜑 → 𝑌 ∈ 𝑆)
5	3, 4	sselid 3933	. . . . . . . 8 ⊢ (𝜑 → 𝑌 ∈ ℝ)
6		dvfsumlem1.1	. . . . . . . . . 10 ⊢ (𝜑 → 𝑋 ∈ 𝑆)
7	3, 6	sselid 3933	. . . . . . . . 9 ⊢ (𝜑 → 𝑋 ∈ ℝ)
8	7	flcld 13730	. . . . . . . 8 ⊢ (𝜑 → (⌊‘𝑋) ∈ ℤ)
9		reflcl 13728	. . . . . . . . . 10 ⊢ (𝑋 ∈ ℝ → (⌊‘𝑋) ∈ ℝ)
10	7, 9	syl 17	. . . . . . . . 9 ⊢ (𝜑 → (⌊‘𝑋) ∈ ℝ)
11		flle 13731	. . . . . . . . . 10 ⊢ (𝑋 ∈ ℝ → (⌊‘𝑋) ≤ 𝑋)
12	7, 11	syl 17	. . . . . . . . 9 ⊢ (𝜑 → (⌊‘𝑋) ≤ 𝑋)
13		dvfsumlem1.4	. . . . . . . . 9 ⊢ (𝜑 → 𝑋 ≤ 𝑌)
14	10, 7, 5, 12, 13	letrd 11302	. . . . . . . 8 ⊢ (𝜑 → (⌊‘𝑋) ≤ 𝑌)
15		flbi 13748	. . . . . . . . 9 ⊢ ((𝑌 ∈ ℝ ∧ (⌊‘𝑋) ∈ ℤ) → ((⌊‘𝑌) = (⌊‘𝑋) ↔ ((⌊‘𝑋) ≤ 𝑌 ∧ 𝑌 < ((⌊‘𝑋) + 1))))
16	15	baibd 539	. . . . . . . 8 ⊢ (((𝑌 ∈ ℝ ∧ (⌊‘𝑋) ∈ ℤ) ∧ (⌊‘𝑋) ≤ 𝑌) → ((⌊‘𝑌) = (⌊‘𝑋) ↔ 𝑌 < ((⌊‘𝑋) + 1)))
17	5, 8, 14, 16	syl21anc 838	. . . . . . 7 ⊢ (𝜑 → ((⌊‘𝑌) = (⌊‘𝑋) ↔ 𝑌 < ((⌊‘𝑋) + 1)))
18	17	biimpar 477	. . . . . 6 ⊢ ((𝜑 ∧ 𝑌 < ((⌊‘𝑋) + 1)) → (⌊‘𝑌) = (⌊‘𝑋))
19	18	oveq2d 7384	. . . . 5 ⊢ ((𝜑 ∧ 𝑌 < ((⌊‘𝑋) + 1)) → (𝑌 − (⌊‘𝑌)) = (𝑌 − (⌊‘𝑋)))
20	19	oveq1d 7383	. . . 4 ⊢ ((𝜑 ∧ 𝑌 < ((⌊‘𝑋) + 1)) → ((𝑌 − (⌊‘𝑌)) · ⦋𝑌 / 𝑥⦌𝐵) = ((𝑌 − (⌊‘𝑋)) · ⦋𝑌 / 𝑥⦌𝐵))
21	18	oveq2d 7384	. . . . . 6 ⊢ ((𝜑 ∧ 𝑌 < ((⌊‘𝑋) + 1)) → (𝑀...(⌊‘𝑌)) = (𝑀...(⌊‘𝑋)))
22	21	sumeq1d 15635	. . . . 5 ⊢ ((𝜑 ∧ 𝑌 < ((⌊‘𝑋) + 1)) → Σ𝑘 ∈ (𝑀...(⌊‘𝑌))𝐶 = Σ𝑘 ∈ (𝑀...(⌊‘𝑋))𝐶)
23	22	oveq1d 7383	. . . 4 ⊢ ((𝜑 ∧ 𝑌 < ((⌊‘𝑋) + 1)) → (Σ𝑘 ∈ (𝑀...(⌊‘𝑌))𝐶 − ⦋𝑌 / 𝑥⦌𝐴) = (Σ𝑘 ∈ (𝑀...(⌊‘𝑋))𝐶 − ⦋𝑌 / 𝑥⦌𝐴))
24	20, 23	oveq12d 7386	. . 3 ⊢ ((𝜑 ∧ 𝑌 < ((⌊‘𝑋) + 1)) → (((𝑌 − (⌊‘𝑌)) · ⦋𝑌 / 𝑥⦌𝐵) + (Σ𝑘 ∈ (𝑀...(⌊‘𝑌))𝐶 − ⦋𝑌 / 𝑥⦌𝐴)) = (((𝑌 − (⌊‘𝑋)) · ⦋𝑌 / 𝑥⦌𝐵) + (Σ𝑘 ∈ (𝑀...(⌊‘𝑋))𝐶 − ⦋𝑌 / 𝑥⦌𝐴)))
25		simpr 484	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑌 = ((⌊‘𝑋) + 1)) → 𝑌 = ((⌊‘𝑋) + 1))
26	7	adantr 480	. . . . . . . . . . . . 13 ⊢ ((𝜑 ∧ 𝑌 = ((⌊‘𝑋) + 1)) → 𝑋 ∈ ℝ)
27	26	flcld 13730	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑌 = ((⌊‘𝑋) + 1)) → (⌊‘𝑋) ∈ ℤ)
28	27	peano2zd 12611	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑌 = ((⌊‘𝑋) + 1)) → ((⌊‘𝑋) + 1) ∈ ℤ)
29	25, 28	eqeltrd 2837	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑌 = ((⌊‘𝑋) + 1)) → 𝑌 ∈ ℤ)
30		flid 13740	. . . . . . . . . 10 ⊢ (𝑌 ∈ ℤ → (⌊‘𝑌) = 𝑌)
31	29, 30	syl 17	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑌 = ((⌊‘𝑋) + 1)) → (⌊‘𝑌) = 𝑌)
32	31, 25	eqtrd 2772	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑌 = ((⌊‘𝑋) + 1)) → (⌊‘𝑌) = ((⌊‘𝑋) + 1))
33	32	oveq2d 7384	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑌 = ((⌊‘𝑋) + 1)) → (𝑌 − (⌊‘𝑌)) = (𝑌 − ((⌊‘𝑋) + 1)))
34	33	oveq1d 7383	. . . . . 6 ⊢ ((𝜑 ∧ 𝑌 = ((⌊‘𝑋) + 1)) → ((𝑌 − (⌊‘𝑌)) · ⦋𝑌 / 𝑥⦌𝐵) = ((𝑌 − ((⌊‘𝑋) + 1)) · ⦋𝑌 / 𝑥⦌𝐵))
35	5	recnd 11172	. . . . . . . . . 10 ⊢ (𝜑 → 𝑌 ∈ ℂ)
36	10	recnd 11172	. . . . . . . . . 10 ⊢ (𝜑 → (⌊‘𝑋) ∈ ℂ)
37	35, 36	subcld 11504	. . . . . . . . 9 ⊢ (𝜑 → (𝑌 − (⌊‘𝑋)) ∈ ℂ)
38		1cnd 11139	. . . . . . . . 9 ⊢ (𝜑 → 1 ∈ ℂ)
39	3	a1i 11	. . . . . . . . . . . . 13 ⊢ (𝜑 → 𝑆 ⊆ ℝ)
40		dvfsum.a	. . . . . . . . . . . . 13 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑆) → 𝐴 ∈ ℝ)
41		dvfsum.b1	. . . . . . . . . . . . 13 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑆) → 𝐵 ∈ 𝑉)
42		dvfsum.b3	. . . . . . . . . . . . 13 ⊢ (𝜑 → (ℝ D (𝑥 ∈ 𝑆 ↦ 𝐴)) = (𝑥 ∈ 𝑆 ↦ 𝐵))
43	39, 40, 41, 42	dvmptrecl 25998	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑆) → 𝐵 ∈ ℝ)
44	43	recnd 11172	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑆) → 𝐵 ∈ ℂ)
45	44	ralrimiva 3130	. . . . . . . . . 10 ⊢ (𝜑 → ∀𝑥 ∈ 𝑆 𝐵 ∈ ℂ)
46		nfcsb1v 3875	. . . . . . . . . . . 12 ⊢ Ⅎ𝑥⦋𝑌 / 𝑥⦌𝐵
47	46	nfel1 2916	. . . . . . . . . . 11 ⊢ Ⅎ𝑥⦋𝑌 / 𝑥⦌𝐵 ∈ ℂ
48		csbeq1a 3865	. . . . . . . . . . . 12 ⊢ (𝑥 = 𝑌 → 𝐵 = ⦋𝑌 / 𝑥⦌𝐵)
49	48	eleq1d 2822	. . . . . . . . . . 11 ⊢ (𝑥 = 𝑌 → (𝐵 ∈ ℂ ↔ ⦋𝑌 / 𝑥⦌𝐵 ∈ ℂ))
50	47, 49	rspc 3566	. . . . . . . . . 10 ⊢ (𝑌 ∈ 𝑆 → (∀𝑥 ∈ 𝑆 𝐵 ∈ ℂ → ⦋𝑌 / 𝑥⦌𝐵 ∈ ℂ))
51	4, 45, 50	sylc 65	. . . . . . . . 9 ⊢ (𝜑 → ⦋𝑌 / 𝑥⦌𝐵 ∈ ℂ)
52	37, 38, 51	subdird 11606	. . . . . . . 8 ⊢ (𝜑 → (((𝑌 − (⌊‘𝑋)) − 1) · ⦋𝑌 / 𝑥⦌𝐵) = (((𝑌 − (⌊‘𝑋)) · ⦋𝑌 / 𝑥⦌𝐵) − (1 · ⦋𝑌 / 𝑥⦌𝐵)))
53	35, 36, 38	subsub4d 11535	. . . . . . . . 9 ⊢ (𝜑 → ((𝑌 − (⌊‘𝑋)) − 1) = (𝑌 − ((⌊‘𝑋) + 1)))
54	53	oveq1d 7383	. . . . . . . 8 ⊢ (𝜑 → (((𝑌 − (⌊‘𝑋)) − 1) · ⦋𝑌 / 𝑥⦌𝐵) = ((𝑌 − ((⌊‘𝑋) + 1)) · ⦋𝑌 / 𝑥⦌𝐵))
55	51	mullidd 11162	. . . . . . . . 9 ⊢ (𝜑 → (1 · ⦋𝑌 / 𝑥⦌𝐵) = ⦋𝑌 / 𝑥⦌𝐵)
56	55	oveq2d 7384	. . . . . . . 8 ⊢ (𝜑 → (((𝑌 − (⌊‘𝑋)) · ⦋𝑌 / 𝑥⦌𝐵) − (1 · ⦋𝑌 / 𝑥⦌𝐵)) = (((𝑌 − (⌊‘𝑋)) · ⦋𝑌 / 𝑥⦌𝐵) − ⦋𝑌 / 𝑥⦌𝐵))
57	52, 54, 56	3eqtr3d 2780	. . . . . . 7 ⊢ (𝜑 → ((𝑌 − ((⌊‘𝑋) + 1)) · ⦋𝑌 / 𝑥⦌𝐵) = (((𝑌 − (⌊‘𝑋)) · ⦋𝑌 / 𝑥⦌𝐵) − ⦋𝑌 / 𝑥⦌𝐵))
58	57	adantr 480	. . . . . 6 ⊢ ((𝜑 ∧ 𝑌 = ((⌊‘𝑋) + 1)) → ((𝑌 − ((⌊‘𝑋) + 1)) · ⦋𝑌 / 𝑥⦌𝐵) = (((𝑌 − (⌊‘𝑋)) · ⦋𝑌 / 𝑥⦌𝐵) − ⦋𝑌 / 𝑥⦌𝐵))
59	34, 58	eqtrd 2772	. . . . 5 ⊢ ((𝜑 ∧ 𝑌 = ((⌊‘𝑋) + 1)) → ((𝑌 − (⌊‘𝑌)) · ⦋𝑌 / 𝑥⦌𝐵) = (((𝑌 − (⌊‘𝑋)) · ⦋𝑌 / 𝑥⦌𝐵) − ⦋𝑌 / 𝑥⦌𝐵))
60		dvfsum.m	. . . . . . . . . . . 12 ⊢ (𝜑 → 𝑀 ∈ ℤ)
61	8	peano2zd 12611	. . . . . . . . . . . 12 ⊢ (𝜑 → ((⌊‘𝑋) + 1) ∈ ℤ)
62	60	zred 12608	. . . . . . . . . . . . . . . 16 ⊢ (𝜑 → 𝑀 ∈ ℝ)
63		peano2rem 11460	. . . . . . . . . . . . . . . 16 ⊢ (𝑀 ∈ ℝ → (𝑀 − 1) ∈ ℝ)
64	62, 63	syl 17	. . . . . . . . . . . . . . 15 ⊢ (𝜑 → (𝑀 − 1) ∈ ℝ)
65		dvfsum.d	. . . . . . . . . . . . . . 15 ⊢ (𝜑 → 𝐷 ∈ ℝ)
66		dvfsum.md	. . . . . . . . . . . . . . . 16 ⊢ (𝜑 → 𝑀 ≤ (𝐷 + 1))
67		1red 11145	. . . . . . . . . . . . . . . . 17 ⊢ (𝜑 → 1 ∈ ℝ)
68	62, 67, 65	lesubaddd 11746	. . . . . . . . . . . . . . . 16 ⊢ (𝜑 → ((𝑀 − 1) ≤ 𝐷 ↔ 𝑀 ≤ (𝐷 + 1)))
69	66, 68	mpbird 257	. . . . . . . . . . . . . . 15 ⊢ (𝜑 → (𝑀 − 1) ≤ 𝐷)
70		dvfsumlem1.3	. . . . . . . . . . . . . . 15 ⊢ (𝜑 → 𝐷 ≤ 𝑋)
71	64, 65, 7, 69, 70	letrd 11302	. . . . . . . . . . . . . 14 ⊢ (𝜑 → (𝑀 − 1) ≤ 𝑋)
72		peano2zm 12546	. . . . . . . . . . . . . . . 16 ⊢ (𝑀 ∈ ℤ → (𝑀 − 1) ∈ ℤ)
73	60, 72	syl 17	. . . . . . . . . . . . . . 15 ⊢ (𝜑 → (𝑀 − 1) ∈ ℤ)
74		flge 13737	. . . . . . . . . . . . . . 15 ⊢ ((𝑋 ∈ ℝ ∧ (𝑀 − 1) ∈ ℤ) → ((𝑀 − 1) ≤ 𝑋 ↔ (𝑀 − 1) ≤ (⌊‘𝑋)))
75	7, 73, 74	syl2anc 585	. . . . . . . . . . . . . 14 ⊢ (𝜑 → ((𝑀 − 1) ≤ 𝑋 ↔ (𝑀 − 1) ≤ (⌊‘𝑋)))
76	71, 75	mpbid 232	. . . . . . . . . . . . 13 ⊢ (𝜑 → (𝑀 − 1) ≤ (⌊‘𝑋))
77	62, 67, 10	lesubaddd 11746	. . . . . . . . . . . . 13 ⊢ (𝜑 → ((𝑀 − 1) ≤ (⌊‘𝑋) ↔ 𝑀 ≤ ((⌊‘𝑋) + 1)))
78	76, 77	mpbid 232	. . . . . . . . . . . 12 ⊢ (𝜑 → 𝑀 ≤ ((⌊‘𝑋) + 1))
79		eluz2 12769	. . . . . . . . . . . 12 ⊢ (((⌊‘𝑋) + 1) ∈ (ℤ_≥‘𝑀) ↔ (𝑀 ∈ ℤ ∧ ((⌊‘𝑋) + 1) ∈ ℤ ∧ 𝑀 ≤ ((⌊‘𝑋) + 1)))
80	60, 61, 78, 79	syl3anbrc 1345	. . . . . . . . . . 11 ⊢ (𝜑 → ((⌊‘𝑋) + 1) ∈ (ℤ_≥‘𝑀))
81		dvfsum.b2	. . . . . . . . . . . . . 14 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑍) → 𝐵 ∈ ℝ)
82	81	recnd 11172	. . . . . . . . . . . . 13 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑍) → 𝐵 ∈ ℂ)
83	82	ralrimiva 3130	. . . . . . . . . . . 12 ⊢ (𝜑 → ∀𝑥 ∈ 𝑍 𝐵 ∈ ℂ)
84		elfzuz 13448	. . . . . . . . . . . . 13 ⊢ (𝑘 ∈ (𝑀...((⌊‘𝑋) + 1)) → 𝑘 ∈ (ℤ_≥‘𝑀))
85		dvfsum.z	. . . . . . . . . . . . 13 ⊢ 𝑍 = (ℤ_≥‘𝑀)
86	84, 85	eleqtrrdi 2848	. . . . . . . . . . . 12 ⊢ (𝑘 ∈ (𝑀...((⌊‘𝑋) + 1)) → 𝑘 ∈ 𝑍)
87		dvfsum.c	. . . . . . . . . . . . . 14 ⊢ (𝑥 = 𝑘 → 𝐵 = 𝐶)
88	87	eleq1d 2822	. . . . . . . . . . . . 13 ⊢ (𝑥 = 𝑘 → (𝐵 ∈ ℂ ↔ 𝐶 ∈ ℂ))
89	88	rspccva 3577	. . . . . . . . . . . 12 ⊢ ((∀𝑥 ∈ 𝑍 𝐵 ∈ ℂ ∧ 𝑘 ∈ 𝑍) → 𝐶 ∈ ℂ)
90	83, 86, 89	syl2an 597	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑘 ∈ (𝑀...((⌊‘𝑋) + 1))) → 𝐶 ∈ ℂ)
91		eqvisset 3462	. . . . . . . . . . . . 13 ⊢ (𝑘 = ((⌊‘𝑋) + 1) → ((⌊‘𝑋) + 1) ∈ V)
92		eqeq2 2749	. . . . . . . . . . . . . . 15 ⊢ (𝑘 = ((⌊‘𝑋) + 1) → (𝑥 = 𝑘 ↔ 𝑥 = ((⌊‘𝑋) + 1)))
93	92	biimpar 477	. . . . . . . . . . . . . 14 ⊢ ((𝑘 = ((⌊‘𝑋) + 1) ∧ 𝑥 = ((⌊‘𝑋) + 1)) → 𝑥 = 𝑘)
94	93, 87	syl 17	. . . . . . . . . . . . 13 ⊢ ((𝑘 = ((⌊‘𝑋) + 1) ∧ 𝑥 = ((⌊‘𝑋) + 1)) → 𝐵 = 𝐶)
95	91, 94	csbied 3887	. . . . . . . . . . . 12 ⊢ (𝑘 = ((⌊‘𝑋) + 1) → ⦋((⌊‘𝑋) + 1) / 𝑥⦌𝐵 = 𝐶)
96	95	eqcomd 2743	. . . . . . . . . . 11 ⊢ (𝑘 = ((⌊‘𝑋) + 1) → 𝐶 = ⦋((⌊‘𝑋) + 1) / 𝑥⦌𝐵)
97	80, 90, 96	fsumm1 15686	. . . . . . . . . 10 ⊢ (𝜑 → Σ𝑘 ∈ (𝑀...((⌊‘𝑋) + 1))𝐶 = (Σ𝑘 ∈ (𝑀...(((⌊‘𝑋) + 1) − 1))𝐶 + ⦋((⌊‘𝑋) + 1) / 𝑥⦌𝐵))
98		ax-1cn 11096	. . . . . . . . . . . . . 14 ⊢ 1 ∈ ℂ
99		pncan 11398	. . . . . . . . . . . . . 14 ⊢ (((⌊‘𝑋) ∈ ℂ ∧ 1 ∈ ℂ) → (((⌊‘𝑋) + 1) − 1) = (⌊‘𝑋))
100	36, 98, 99	sylancl 587	. . . . . . . . . . . . 13 ⊢ (𝜑 → (((⌊‘𝑋) + 1) − 1) = (⌊‘𝑋))
101	100	oveq2d 7384	. . . . . . . . . . . 12 ⊢ (𝜑 → (𝑀...(((⌊‘𝑋) + 1) − 1)) = (𝑀...(⌊‘𝑋)))
102	101	sumeq1d 15635	. . . . . . . . . . 11 ⊢ (𝜑 → Σ𝑘 ∈ (𝑀...(((⌊‘𝑋) + 1) − 1))𝐶 = Σ𝑘 ∈ (𝑀...(⌊‘𝑋))𝐶)
103	102	oveq1d 7383	. . . . . . . . . 10 ⊢ (𝜑 → (Σ𝑘 ∈ (𝑀...(((⌊‘𝑋) + 1) − 1))𝐶 + ⦋((⌊‘𝑋) + 1) / 𝑥⦌𝐵) = (Σ𝑘 ∈ (𝑀...(⌊‘𝑋))𝐶 + ⦋((⌊‘𝑋) + 1) / 𝑥⦌𝐵))
104	97, 103	eqtrd 2772	. . . . . . . . 9 ⊢ (𝜑 → Σ𝑘 ∈ (𝑀...((⌊‘𝑋) + 1))𝐶 = (Σ𝑘 ∈ (𝑀...(⌊‘𝑋))𝐶 + ⦋((⌊‘𝑋) + 1) / 𝑥⦌𝐵))
105	104	adantr 480	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑌 = ((⌊‘𝑋) + 1)) → Σ𝑘 ∈ (𝑀...((⌊‘𝑋) + 1))𝐶 = (Σ𝑘 ∈ (𝑀...(⌊‘𝑋))𝐶 + ⦋((⌊‘𝑋) + 1) / 𝑥⦌𝐵))
106	32	oveq2d 7384	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑌 = ((⌊‘𝑋) + 1)) → (𝑀...(⌊‘𝑌)) = (𝑀...((⌊‘𝑋) + 1)))
107	106	sumeq1d 15635	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑌 = ((⌊‘𝑋) + 1)) → Σ𝑘 ∈ (𝑀...(⌊‘𝑌))𝐶 = Σ𝑘 ∈ (𝑀...((⌊‘𝑋) + 1))𝐶)
108	25	csbeq1d 3855	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑌 = ((⌊‘𝑋) + 1)) → ⦋𝑌 / 𝑥⦌𝐵 = ⦋((⌊‘𝑋) + 1) / 𝑥⦌𝐵)
109	108	oveq2d 7384	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑌 = ((⌊‘𝑋) + 1)) → (Σ𝑘 ∈ (𝑀...(⌊‘𝑋))𝐶 + ⦋𝑌 / 𝑥⦌𝐵) = (Σ𝑘 ∈ (𝑀...(⌊‘𝑋))𝐶 + ⦋((⌊‘𝑋) + 1) / 𝑥⦌𝐵))
110	105, 107, 109	3eqtr4d 2782	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑌 = ((⌊‘𝑋) + 1)) → Σ𝑘 ∈ (𝑀...(⌊‘𝑌))𝐶 = (Σ𝑘 ∈ (𝑀...(⌊‘𝑋))𝐶 + ⦋𝑌 / 𝑥⦌𝐵))
111	110	oveq1d 7383	. . . . . 6 ⊢ ((𝜑 ∧ 𝑌 = ((⌊‘𝑋) + 1)) → (Σ𝑘 ∈ (𝑀...(⌊‘𝑌))𝐶 − ⦋𝑌 / 𝑥⦌𝐴) = ((Σ𝑘 ∈ (𝑀...(⌊‘𝑋))𝐶 + ⦋𝑌 / 𝑥⦌𝐵) − ⦋𝑌 / 𝑥⦌𝐴))
112		fzfid 13908	. . . . . . . . 9 ⊢ (𝜑 → (𝑀...(⌊‘𝑋)) ∈ Fin)
113		elfzuz 13448	. . . . . . . . . . 11 ⊢ (𝑘 ∈ (𝑀...(⌊‘𝑋)) → 𝑘 ∈ (ℤ_≥‘𝑀))
114	113, 85	eleqtrrdi 2848	. . . . . . . . . 10 ⊢ (𝑘 ∈ (𝑀...(⌊‘𝑋)) → 𝑘 ∈ 𝑍)
115	83, 114, 89	syl2an 597	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑘 ∈ (𝑀...(⌊‘𝑋))) → 𝐶 ∈ ℂ)
116	112, 115	fsumcl 15668	. . . . . . . 8 ⊢ (𝜑 → Σ𝑘 ∈ (𝑀...(⌊‘𝑋))𝐶 ∈ ℂ)
117	40	recnd 11172	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑆) → 𝐴 ∈ ℂ)
118	117	ralrimiva 3130	. . . . . . . . 9 ⊢ (𝜑 → ∀𝑥 ∈ 𝑆 𝐴 ∈ ℂ)
119		nfcsb1v 3875	. . . . . . . . . . 11 ⊢ Ⅎ𝑥⦋𝑌 / 𝑥⦌𝐴
120	119	nfel1 2916	. . . . . . . . . 10 ⊢ Ⅎ𝑥⦋𝑌 / 𝑥⦌𝐴 ∈ ℂ
121		csbeq1a 3865	. . . . . . . . . . 11 ⊢ (𝑥 = 𝑌 → 𝐴 = ⦋𝑌 / 𝑥⦌𝐴)
122	121	eleq1d 2822	. . . . . . . . . 10 ⊢ (𝑥 = 𝑌 → (𝐴 ∈ ℂ ↔ ⦋𝑌 / 𝑥⦌𝐴 ∈ ℂ))
123	120, 122	rspc 3566	. . . . . . . . 9 ⊢ (𝑌 ∈ 𝑆 → (∀𝑥 ∈ 𝑆 𝐴 ∈ ℂ → ⦋𝑌 / 𝑥⦌𝐴 ∈ ℂ))
124	4, 118, 123	sylc 65	. . . . . . . 8 ⊢ (𝜑 → ⦋𝑌 / 𝑥⦌𝐴 ∈ ℂ)
125	116, 51, 124	addsubd 11525	. . . . . . 7 ⊢ (𝜑 → ((Σ𝑘 ∈ (𝑀...(⌊‘𝑋))𝐶 + ⦋𝑌 / 𝑥⦌𝐵) − ⦋𝑌 / 𝑥⦌𝐴) = ((Σ𝑘 ∈ (𝑀...(⌊‘𝑋))𝐶 − ⦋𝑌 / 𝑥⦌𝐴) + ⦋𝑌 / 𝑥⦌𝐵))
126	125	adantr 480	. . . . . 6 ⊢ ((𝜑 ∧ 𝑌 = ((⌊‘𝑋) + 1)) → ((Σ𝑘 ∈ (𝑀...(⌊‘𝑋))𝐶 + ⦋𝑌 / 𝑥⦌𝐵) − ⦋𝑌 / 𝑥⦌𝐴) = ((Σ𝑘 ∈ (𝑀...(⌊‘𝑋))𝐶 − ⦋𝑌 / 𝑥⦌𝐴) + ⦋𝑌 / 𝑥⦌𝐵))
127	111, 126	eqtrd 2772	. . . . 5 ⊢ ((𝜑 ∧ 𝑌 = ((⌊‘𝑋) + 1)) → (Σ𝑘 ∈ (𝑀...(⌊‘𝑌))𝐶 − ⦋𝑌 / 𝑥⦌𝐴) = ((Σ𝑘 ∈ (𝑀...(⌊‘𝑋))𝐶 − ⦋𝑌 / 𝑥⦌𝐴) + ⦋𝑌 / 𝑥⦌𝐵))
128	59, 127	oveq12d 7386	. . . 4 ⊢ ((𝜑 ∧ 𝑌 = ((⌊‘𝑋) + 1)) → (((𝑌 − (⌊‘𝑌)) · ⦋𝑌 / 𝑥⦌𝐵) + (Σ𝑘 ∈ (𝑀...(⌊‘𝑌))𝐶 − ⦋𝑌 / 𝑥⦌𝐴)) = ((((𝑌 − (⌊‘𝑋)) · ⦋𝑌 / 𝑥⦌𝐵) − ⦋𝑌 / 𝑥⦌𝐵) + ((Σ𝑘 ∈ (𝑀...(⌊‘𝑋))𝐶 − ⦋𝑌 / 𝑥⦌𝐴) + ⦋𝑌 / 𝑥⦌𝐵)))
129	37, 51	mulcld 11164	. . . . . 6 ⊢ (𝜑 → ((𝑌 − (⌊‘𝑋)) · ⦋𝑌 / 𝑥⦌𝐵) ∈ ℂ)
130	129	adantr 480	. . . . 5 ⊢ ((𝜑 ∧ 𝑌 = ((⌊‘𝑋) + 1)) → ((𝑌 − (⌊‘𝑋)) · ⦋𝑌 / 𝑥⦌𝐵) ∈ ℂ)
131	51	adantr 480	. . . . 5 ⊢ ((𝜑 ∧ 𝑌 = ((⌊‘𝑋) + 1)) → ⦋𝑌 / 𝑥⦌𝐵 ∈ ℂ)
132	116, 124	subcld 11504	. . . . . 6 ⊢ (𝜑 → (Σ𝑘 ∈ (𝑀...(⌊‘𝑋))𝐶 − ⦋𝑌 / 𝑥⦌𝐴) ∈ ℂ)
133	132	adantr 480	. . . . 5 ⊢ ((𝜑 ∧ 𝑌 = ((⌊‘𝑋) + 1)) → (Σ𝑘 ∈ (𝑀...(⌊‘𝑋))𝐶 − ⦋𝑌 / 𝑥⦌𝐴) ∈ ℂ)
134	130, 131, 133	nppcan3d 11531	. . . 4 ⊢ ((𝜑 ∧ 𝑌 = ((⌊‘𝑋) + 1)) → ((((𝑌 − (⌊‘𝑋)) · ⦋𝑌 / 𝑥⦌𝐵) − ⦋𝑌 / 𝑥⦌𝐵) + ((Σ𝑘 ∈ (𝑀...(⌊‘𝑋))𝐶 − ⦋𝑌 / 𝑥⦌𝐴) + ⦋𝑌 / 𝑥⦌𝐵)) = (((𝑌 − (⌊‘𝑋)) · ⦋𝑌 / 𝑥⦌𝐵) + (Σ𝑘 ∈ (𝑀...(⌊‘𝑋))𝐶 − ⦋𝑌 / 𝑥⦌𝐴)))
135	128, 134	eqtrd 2772	. . 3 ⊢ ((𝜑 ∧ 𝑌 = ((⌊‘𝑋) + 1)) → (((𝑌 − (⌊‘𝑌)) · ⦋𝑌 / 𝑥⦌𝐵) + (Σ𝑘 ∈ (𝑀...(⌊‘𝑌))𝐶 − ⦋𝑌 / 𝑥⦌𝐴)) = (((𝑌 − (⌊‘𝑋)) · ⦋𝑌 / 𝑥⦌𝐵) + (Σ𝑘 ∈ (𝑀...(⌊‘𝑋))𝐶 − ⦋𝑌 / 𝑥⦌𝐴)))
136		dvfsumlem1.6	. . . 4 ⊢ (𝜑 → 𝑌 ≤ ((⌊‘𝑋) + 1))
137		peano2re 11318	. . . . . 6 ⊢ ((⌊‘𝑋) ∈ ℝ → ((⌊‘𝑋) + 1) ∈ ℝ)
138	10, 137	syl 17	. . . . 5 ⊢ (𝜑 → ((⌊‘𝑋) + 1) ∈ ℝ)
139	5, 138	leloed 11288	. . . 4 ⊢ (𝜑 → (𝑌 ≤ ((⌊‘𝑋) + 1) ↔ (𝑌 < ((⌊‘𝑋) + 1) ∨ 𝑌 = ((⌊‘𝑋) + 1))))
140	136, 139	mpbid 232	. . 3 ⊢ (𝜑 → (𝑌 < ((⌊‘𝑋) + 1) ∨ 𝑌 = ((⌊‘𝑋) + 1)))
141	24, 135, 140	mpjaodan 961	. 2 ⊢ (𝜑 → (((𝑌 − (⌊‘𝑌)) · ⦋𝑌 / 𝑥⦌𝐵) + (Σ𝑘 ∈ (𝑀...(⌊‘𝑌))𝐶 − ⦋𝑌 / 𝑥⦌𝐴)) = (((𝑌 − (⌊‘𝑋)) · ⦋𝑌 / 𝑥⦌𝐵) + (Σ𝑘 ∈ (𝑀...(⌊‘𝑋))𝐶 − ⦋𝑌 / 𝑥⦌𝐴)))
142		ovex 7401	. . 3 ⊢ (((𝑌 − (⌊‘𝑌)) · ⦋𝑌 / 𝑥⦌𝐵) + (Σ𝑘 ∈ (𝑀...(⌊‘𝑌))𝐶 − ⦋𝑌 / 𝑥⦌𝐴)) ∈ V
143		nfcv 2899	. . . 4 ⊢ Ⅎ𝑥𝑌
144		nfcv 2899	. . . . . 6 ⊢ Ⅎ𝑥(𝑌 − (⌊‘𝑌))
145		nfcv 2899	. . . . . 6 ⊢ Ⅎ𝑥 ·
146	144, 145, 46	nfov 7398	. . . . 5 ⊢ Ⅎ𝑥((𝑌 − (⌊‘𝑌)) · ⦋𝑌 / 𝑥⦌𝐵)
147		nfcv 2899	. . . . 5 ⊢ Ⅎ𝑥 +
148		nfcv 2899	. . . . . 6 ⊢ Ⅎ𝑥Σ𝑘 ∈ (𝑀...(⌊‘𝑌))𝐶
149		nfcv 2899	. . . . . 6 ⊢ Ⅎ𝑥 −
150	148, 149, 119	nfov 7398	. . . . 5 ⊢ Ⅎ𝑥(Σ𝑘 ∈ (𝑀...(⌊‘𝑌))𝐶 − ⦋𝑌 / 𝑥⦌𝐴)
151	146, 147, 150	nfov 7398	. . . 4 ⊢ Ⅎ𝑥(((𝑌 − (⌊‘𝑌)) · ⦋𝑌 / 𝑥⦌𝐵) + (Σ𝑘 ∈ (𝑀...(⌊‘𝑌))𝐶 − ⦋𝑌 / 𝑥⦌𝐴))
152		id 22	. . . . . . 7 ⊢ (𝑥 = 𝑌 → 𝑥 = 𝑌)
153		fveq2 6842	. . . . . . 7 ⊢ (𝑥 = 𝑌 → (⌊‘𝑥) = (⌊‘𝑌))
154	152, 153	oveq12d 7386	. . . . . 6 ⊢ (𝑥 = 𝑌 → (𝑥 − (⌊‘𝑥)) = (𝑌 − (⌊‘𝑌)))
155	154, 48	oveq12d 7386	. . . . 5 ⊢ (𝑥 = 𝑌 → ((𝑥 − (⌊‘𝑥)) · 𝐵) = ((𝑌 − (⌊‘𝑌)) · ⦋𝑌 / 𝑥⦌𝐵))
156	153	oveq2d 7384	. . . . . . 7 ⊢ (𝑥 = 𝑌 → (𝑀...(⌊‘𝑥)) = (𝑀...(⌊‘𝑌)))
157	156	sumeq1d 15635	. . . . . 6 ⊢ (𝑥 = 𝑌 → Σ𝑘 ∈ (𝑀...(⌊‘𝑥))𝐶 = Σ𝑘 ∈ (𝑀...(⌊‘𝑌))𝐶)
158	157, 121	oveq12d 7386	. . . . 5 ⊢ (𝑥 = 𝑌 → (Σ𝑘 ∈ (𝑀...(⌊‘𝑥))𝐶 − 𝐴) = (Σ𝑘 ∈ (𝑀...(⌊‘𝑌))𝐶 − ⦋𝑌 / 𝑥⦌𝐴))
159	155, 158	oveq12d 7386	. . . 4 ⊢ (𝑥 = 𝑌 → (((𝑥 − (⌊‘𝑥)) · 𝐵) + (Σ𝑘 ∈ (𝑀...(⌊‘𝑥))𝐶 − 𝐴)) = (((𝑌 − (⌊‘𝑌)) · ⦋𝑌 / 𝑥⦌𝐵) + (Σ𝑘 ∈ (𝑀...(⌊‘𝑌))𝐶 − ⦋𝑌 / 𝑥⦌𝐴)))
160		dvfsum.h	. . . 4 ⊢ 𝐻 = (𝑥 ∈ 𝑆 ↦ (((𝑥 − (⌊‘𝑥)) · 𝐵) + (Σ𝑘 ∈ (𝑀...(⌊‘𝑥))𝐶 − 𝐴)))
161	143, 151, 159, 160	fvmptf 6971	. . 3 ⊢ ((𝑌 ∈ 𝑆 ∧ (((𝑌 − (⌊‘𝑌)) · ⦋𝑌 / 𝑥⦌𝐵) + (Σ𝑘 ∈ (𝑀...(⌊‘𝑌))𝐶 − ⦋𝑌 / 𝑥⦌𝐴)) ∈ V) → (𝐻‘𝑌) = (((𝑌 − (⌊‘𝑌)) · ⦋𝑌 / 𝑥⦌𝐵) + (Σ𝑘 ∈ (𝑀...(⌊‘𝑌))𝐶 − ⦋𝑌 / 𝑥⦌𝐴)))
162	4, 142, 161	sylancl 587	. 2 ⊢ (𝜑 → (𝐻‘𝑌) = (((𝑌 − (⌊‘𝑌)) · ⦋𝑌 / 𝑥⦌𝐵) + (Σ𝑘 ∈ (𝑀...(⌊‘𝑌))𝐶 − ⦋𝑌 / 𝑥⦌𝐴)))
163	129, 124, 116	subadd23d 11526	. 2 ⊢ (𝜑 → ((((𝑌 − (⌊‘𝑋)) · ⦋𝑌 / 𝑥⦌𝐵) − ⦋𝑌 / 𝑥⦌𝐴) + Σ𝑘 ∈ (𝑀...(⌊‘𝑋))𝐶) = (((𝑌 − (⌊‘𝑋)) · ⦋𝑌 / 𝑥⦌𝐵) + (Σ𝑘 ∈ (𝑀...(⌊‘𝑋))𝐶 − ⦋𝑌 / 𝑥⦌𝐴)))
164	141, 162, 163	3eqtr4d 2782	1 ⊢ (𝜑 → (𝐻‘𝑌) = ((((𝑌 − (⌊‘𝑋)) · ⦋𝑌 / 𝑥⦌𝐵) − ⦋𝑌 / 𝑥⦌𝐴) + Σ𝑘 ∈ (𝑀...(⌊‘𝑋))𝐶))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ↔ wb 206 ∧ wa 395 ∨ wo 848 ∧ w3a 1087 = wceq 1542 ∈ wcel 2114 ∀wral 3052 Vcvv 3442 ⦋csb 3851 ⊆ wss 3903 class class class wbr 5100 ↦ cmpt 5181 ‘cfv 6500 (class class class)co 7368 ℂcc 11036 ℝcr 11037 1c1 11039 + caddc 11041 · cmul 11043 +∞cpnf 11175 ℝ^*cxr 11177 < clt 11178 ≤ cle 11179 − cmin 11376 ℤcz 12500 ℤ_≥cuz 12763 (,)cioo 13273 ...cfz 13435 ⌊cfl 13722 Σcsu 15621 D cdv 25832

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 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2709 ax-rep 5226 ax-sep 5243 ax-nul 5253 ax-pow 5312 ax-pr 5379 ax-un 7690 ax-inf2 9562 ax-cnex 11094 ax-resscn 11095 ax-1cn 11096 ax-icn 11097 ax-addcl 11098 ax-addrcl 11099 ax-mulcl 11100 ax-mulrcl 11101 ax-mulcom 11102 ax-addass 11103 ax-mulass 11104 ax-distr 11105 ax-i2m1 11106 ax-1ne0 11107 ax-1rid 11108 ax-rnegex 11109 ax-rrecex 11110 ax-cnre 11111 ax-pre-lttri 11112 ax-pre-lttrn 11113 ax-pre-ltadd 11114 ax-pre-mulgt0 11115 ax-pre-sup 11116

This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-nfc 2886 df-ne 2934 df-nel 3038 df-ral 3053 df-rex 3063 df-rmo 3352 df-reu 3353 df-rab 3402 df-v 3444 df-sbc 3743 df-csb 3852 df-dif 3906 df-un 3908 df-in 3910 df-ss 3920 df-pss 3923 df-nul 4288 df-if 4482 df-pw 4558 df-sn 4583 df-pr 4585 df-tp 4587 df-op 4589 df-uni 4866 df-int 4905 df-iun 4950 df-iin 4951 df-br 5101 df-opab 5163 df-mpt 5182 df-tr 5208 df-id 5527 df-eprel 5532 df-po 5540 df-so 5541 df-fr 5585 df-se 5586 df-we 5587 df-xp 5638 df-rel 5639 df-cnv 5640 df-co 5641 df-dm 5642 df-rn 5643 df-res 5644 df-ima 5645 df-pred 6267 df-ord 6328 df-on 6329 df-lim 6330 df-suc 6331 df-iota 6456 df-fun 6502 df-fn 6503 df-f 6504 df-f1 6505 df-fo 6506 df-f1o 6507 df-fv 6508 df-isom 6509 df-riota 7325 df-ov 7371 df-oprab 7372 df-mpo 7373 df-om 7819 df-1st 7943 df-2nd 7944 df-frecs 8233 df-wrecs 8264 df-recs 8313 df-rdg 8351 df-1o 8407 df-er 8645 df-map 8777 df-pm 8778 df-en 8896 df-dom 8897 df-sdom 8898 df-fin 8899 df-fi 9326 df-sup 9357 df-inf 9358 df-oi 9427 df-card 9863 df-pnf 11180 df-mnf 11181 df-xr 11182 df-ltxr 11183 df-le 11184 df-sub 11378 df-neg 11379 df-div 11807 df-nn 12158 df-2 12220 df-3 12221 df-4 12222 df-5 12223 df-6 12224 df-7 12225 df-8 12226 df-9 12227 df-n0 12414 df-z 12501 df-dec 12620 df-uz 12764 df-q 12874 df-rp 12918 df-xneg 13038 df-xadd 13039 df-xmul 13040 df-ioo 13277 df-icc 13280 df-fz 13436 df-fzo 13583 df-fl 13724 df-seq 13937 df-exp 13997 df-hash 14266 df-cj 15034 df-re 15035 df-im 15036 df-sqrt 15170 df-abs 15171 df-clim 15423 df-sum 15622 df-struct 17086 df-slot 17121 df-ndx 17133 df-base 17149 df-plusg 17202 df-mulr 17203 df-starv 17204 df-tset 17208 df-ple 17209 df-ds 17211 df-unif 17212 df-rest 17354 df-topn 17355 df-topgen 17375 df-psmet 21313 df-xmet 21314 df-met 21315 df-bl 21316 df-mopn 21317 df-fbas 21318 df-fg 21319 df-cnfld 21322 df-top 22850 df-topon 22867 df-topsp 22889 df-bases 22902 df-cld 22975 df-ntr 22976 df-cls 22977 df-nei 23054 df-lp 23092 df-perf 23093 df-cn 23183 df-cnp 23184 df-haus 23271 df-fil 23802 df-fm 23894 df-flim 23895 df-flf 23896 df-xms 24276 df-ms 24277 df-cncf 24839 df-limc 25835 df-dv 25836

This theorem is referenced by: dvfsumlem2 26001 dvfsumlem2OLD 26002

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