ftc1lem5 - Metamath Proof Explorer

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Theorem ftc1lem5 25564

Description: Lemma for ftc1 25566. (Contributed by Mario Carneiro, 14-Aug-2014.) (Revised by Mario Carneiro, 28-Dec-2016.)

**Hypotheses**
Ref	Expression
ftc1.g	⊢ 𝐺 = (𝑥 ∈ (𝐴[,]𝐵) ↦ ∫(𝐴(,)𝑥)(𝐹‘𝑡) d𝑡)
ftc1.a	⊢ (𝜑 → 𝐴 ∈ ℝ)
ftc1.b	⊢ (𝜑 → 𝐵 ∈ ℝ)
ftc1.le	⊢ (𝜑 → 𝐴 ≤ 𝐵)
ftc1.s	⊢ (𝜑 → (𝐴(,)𝐵) ⊆ 𝐷)
ftc1.d	⊢ (𝜑 → 𝐷 ⊆ ℝ)
ftc1.i	⊢ (𝜑 → 𝐹 ∈ 𝐿¹)
ftc1.c	⊢ (𝜑 → 𝐶 ∈ (𝐴(,)𝐵))
ftc1.f	⊢ (𝜑 → 𝐹 ∈ ((𝐾 CnP 𝐿)‘𝐶))
ftc1.j	⊢ 𝐽 = (𝐿 ↾_t ℝ)
ftc1.k	⊢ 𝐾 = (𝐿 ↾_t 𝐷)
ftc1.l	⊢ 𝐿 = (TopOpen‘ℂ_fld)
ftc1.h	⊢ 𝐻 = (𝑧 ∈ ((𝐴[,]𝐵) ∖ {𝐶}) ↦ (((𝐺‘𝑧) − (𝐺‘𝐶)) / (𝑧 − 𝐶)))
ftc1.e	⊢ (𝜑 → 𝐸 ∈ ℝ⁺)
ftc1.r	⊢ (𝜑 → 𝑅 ∈ ℝ⁺)
ftc1.fc	⊢ ((𝜑 ∧ 𝑦 ∈ 𝐷) → ((abs‘(𝑦 − 𝐶)) < 𝑅 → (abs‘((𝐹‘𝑦) − (𝐹‘𝐶))) < 𝐸))
ftc1.x1	⊢ (𝜑 → 𝑋 ∈ (𝐴[,]𝐵))
ftc1.x2	⊢ (𝜑 → (abs‘(𝑋 − 𝐶)) < 𝑅)

**Assertion**
Ref	Expression
ftc1lem5	⊢ ((𝜑 ∧ 𝑋 ≠ 𝐶) → (abs‘((𝐻‘𝑋) − (𝐹‘𝐶))) < 𝐸)

Distinct variable groups: 𝑥,𝑡,𝑦,𝑧,𝐶 𝑡,𝐷,𝑥,𝑦,𝑧 𝑦,𝐺,𝑧 𝑡,𝐴,𝑥,𝑦,𝑧 𝑡,𝐵,𝑥,𝑦,𝑧 𝑡,𝑋,𝑥,𝑧 𝑡,𝐸,𝑦 𝑦,𝐻 𝜑,𝑡,𝑥,𝑦,𝑧 𝑡,𝐹,𝑥,𝑦,𝑧 𝑥,𝐿,𝑦,𝑧 𝑦,𝑅 Allowed substitution hints: 𝑅(𝑥,𝑧,𝑡) 𝐸(𝑥,𝑧) 𝐺(𝑥,𝑡) 𝐻(𝑥,𝑧,𝑡) 𝐽(𝑥,𝑦,𝑧,𝑡) 𝐾(𝑥,𝑦,𝑧,𝑡) 𝐿(𝑡) 𝑋(𝑦)

**Proof of Theorem ftc1lem5**
Step	Hyp	Ref	Expression
1		ftc1.a	. . . . . 6 ⊢ (𝜑 → 𝐴 ∈ ℝ)
2		ftc1.b	. . . . . 6 ⊢ (𝜑 → 𝐵 ∈ ℝ)
3		iccssre 13408	. . . . . 6 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (𝐴[,]𝐵) ⊆ ℝ)
4	1, 2, 3	syl2anc 584	. . . . 5 ⊢ (𝜑 → (𝐴[,]𝐵) ⊆ ℝ)
5		ftc1.x1	. . . . 5 ⊢ (𝜑 → 𝑋 ∈ (𝐴[,]𝐵))
6	4, 5	sseldd 3983	. . . 4 ⊢ (𝜑 → 𝑋 ∈ ℝ)
7		ioossicc 13412	. . . . . 6 ⊢ (𝐴(,)𝐵) ⊆ (𝐴[,]𝐵)
8		ftc1.c	. . . . . 6 ⊢ (𝜑 → 𝐶 ∈ (𝐴(,)𝐵))
9	7, 8	sselid 3980	. . . . 5 ⊢ (𝜑 → 𝐶 ∈ (𝐴[,]𝐵))
10	4, 9	sseldd 3983	. . . 4 ⊢ (𝜑 → 𝐶 ∈ ℝ)
11	6, 10	lttri2d 11355	. . 3 ⊢ (𝜑 → (𝑋 ≠ 𝐶 ↔ (𝑋 < 𝐶 ∨ 𝐶 < 𝑋)))
12	11	biimpa 477	. 2 ⊢ ((𝜑 ∧ 𝑋 ≠ 𝐶) → (𝑋 < 𝐶 ∨ 𝐶 < 𝑋))
13	5	adantr 481	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑋 < 𝐶) → 𝑋 ∈ (𝐴[,]𝐵))
14	6	adantr 481	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑋 < 𝐶) → 𝑋 ∈ ℝ)
15		simpr 485	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑋 < 𝐶) → 𝑋 < 𝐶)
16	14, 15	ltned 11352	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑋 < 𝐶) → 𝑋 ≠ 𝐶)
17		eldifsn 4790	. . . . . . . 8 ⊢ (𝑋 ∈ ((𝐴[,]𝐵) ∖ {𝐶}) ↔ (𝑋 ∈ (𝐴[,]𝐵) ∧ 𝑋 ≠ 𝐶))
18	13, 16, 17	sylanbrc 583	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑋 < 𝐶) → 𝑋 ∈ ((𝐴[,]𝐵) ∖ {𝐶}))
19		fveq2 6891	. . . . . . . . . 10 ⊢ (𝑧 = 𝑋 → (𝐺‘𝑧) = (𝐺‘𝑋))
20	19	oveq1d 7426	. . . . . . . . 9 ⊢ (𝑧 = 𝑋 → ((𝐺‘𝑧) − (𝐺‘𝐶)) = ((𝐺‘𝑋) − (𝐺‘𝐶)))
21		oveq1 7418	. . . . . . . . 9 ⊢ (𝑧 = 𝑋 → (𝑧 − 𝐶) = (𝑋 − 𝐶))
22	20, 21	oveq12d 7429	. . . . . . . 8 ⊢ (𝑧 = 𝑋 → (((𝐺‘𝑧) − (𝐺‘𝐶)) / (𝑧 − 𝐶)) = (((𝐺‘𝑋) − (𝐺‘𝐶)) / (𝑋 − 𝐶)))
23		ftc1.h	. . . . . . . 8 ⊢ 𝐻 = (𝑧 ∈ ((𝐴[,]𝐵) ∖ {𝐶}) ↦ (((𝐺‘𝑧) − (𝐺‘𝐶)) / (𝑧 − 𝐶)))
24		ovex 7444	. . . . . . . 8 ⊢ (((𝐺‘𝑋) − (𝐺‘𝐶)) / (𝑋 − 𝐶)) ∈ V
25	22, 23, 24	fvmpt 6998	. . . . . . 7 ⊢ (𝑋 ∈ ((𝐴[,]𝐵) ∖ {𝐶}) → (𝐻‘𝑋) = (((𝐺‘𝑋) − (𝐺‘𝐶)) / (𝑋 − 𝐶)))
26	18, 25	syl 17	. . . . . 6 ⊢ ((𝜑 ∧ 𝑋 < 𝐶) → (𝐻‘𝑋) = (((𝐺‘𝑋) − (𝐺‘𝐶)) / (𝑋 − 𝐶)))
27		ftc1.g	. . . . . . . . . . 11 ⊢ 𝐺 = (𝑥 ∈ (𝐴[,]𝐵) ↦ ∫(𝐴(,)𝑥)(𝐹‘𝑡) d𝑡)
28		ftc1.le	. . . . . . . . . . 11 ⊢ (𝜑 → 𝐴 ≤ 𝐵)
29		ftc1.s	. . . . . . . . . . 11 ⊢ (𝜑 → (𝐴(,)𝐵) ⊆ 𝐷)
30		ftc1.d	. . . . . . . . . . 11 ⊢ (𝜑 → 𝐷 ⊆ ℝ)
31		ftc1.i	. . . . . . . . . . 11 ⊢ (𝜑 → 𝐹 ∈ 𝐿¹)
32		ftc1.f	. . . . . . . . . . . 12 ⊢ (𝜑 → 𝐹 ∈ ((𝐾 CnP 𝐿)‘𝐶))
33		ftc1.j	. . . . . . . . . . . 12 ⊢ 𝐽 = (𝐿 ↾_t ℝ)
34		ftc1.k	. . . . . . . . . . . 12 ⊢ 𝐾 = (𝐿 ↾_t 𝐷)
35		ftc1.l	. . . . . . . . . . . 12 ⊢ 𝐿 = (TopOpen‘ℂ_fld)
36	27, 1, 2, 28, 29, 30, 31, 8, 32, 33, 34, 35	ftc1lem3 25562	. . . . . . . . . . 11 ⊢ (𝜑 → 𝐹:𝐷⟶ℂ)
37	27, 1, 2, 28, 29, 30, 31, 36	ftc1lem2 25560	. . . . . . . . . 10 ⊢ (𝜑 → 𝐺:(𝐴[,]𝐵)⟶ℂ)
38	37, 5	ffvelcdmd 7087	. . . . . . . . 9 ⊢ (𝜑 → (𝐺‘𝑋) ∈ ℂ)
39	37, 9	ffvelcdmd 7087	. . . . . . . . 9 ⊢ (𝜑 → (𝐺‘𝐶) ∈ ℂ)
40	38, 39	subcld 11573	. . . . . . . 8 ⊢ (𝜑 → ((𝐺‘𝑋) − (𝐺‘𝐶)) ∈ ℂ)
41	40	adantr 481	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑋 < 𝐶) → ((𝐺‘𝑋) − (𝐺‘𝐶)) ∈ ℂ)
42	6	recnd 11244	. . . . . . . . 9 ⊢ (𝜑 → 𝑋 ∈ ℂ)
43	10	recnd 11244	. . . . . . . . 9 ⊢ (𝜑 → 𝐶 ∈ ℂ)
44	42, 43	subcld 11573	. . . . . . . 8 ⊢ (𝜑 → (𝑋 − 𝐶) ∈ ℂ)
45	44	adantr 481	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑋 < 𝐶) → (𝑋 − 𝐶) ∈ ℂ)
46	42, 43	subeq0ad 11583	. . . . . . . . . 10 ⊢ (𝜑 → ((𝑋 − 𝐶) = 0 ↔ 𝑋 = 𝐶))
47	46	necon3bid 2985	. . . . . . . . 9 ⊢ (𝜑 → ((𝑋 − 𝐶) ≠ 0 ↔ 𝑋 ≠ 𝐶))
48	47	biimpar 478	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑋 ≠ 𝐶) → (𝑋 − 𝐶) ≠ 0)
49	16, 48	syldan 591	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑋 < 𝐶) → (𝑋 − 𝐶) ≠ 0)
50	41, 45, 49	div2negd 12007	. . . . . 6 ⊢ ((𝜑 ∧ 𝑋 < 𝐶) → (-((𝐺‘𝑋) − (𝐺‘𝐶)) / -(𝑋 − 𝐶)) = (((𝐺‘𝑋) − (𝐺‘𝐶)) / (𝑋 − 𝐶)))
51	38, 39	negsubdi2d 11589	. . . . . . . 8 ⊢ (𝜑 → -((𝐺‘𝑋) − (𝐺‘𝐶)) = ((𝐺‘𝐶) − (𝐺‘𝑋)))
52	42, 43	negsubdi2d 11589	. . . . . . . 8 ⊢ (𝜑 → -(𝑋 − 𝐶) = (𝐶 − 𝑋))
53	51, 52	oveq12d 7429	. . . . . . 7 ⊢ (𝜑 → (-((𝐺‘𝑋) − (𝐺‘𝐶)) / -(𝑋 − 𝐶)) = (((𝐺‘𝐶) − (𝐺‘𝑋)) / (𝐶 − 𝑋)))
54	53	adantr 481	. . . . . 6 ⊢ ((𝜑 ∧ 𝑋 < 𝐶) → (-((𝐺‘𝑋) − (𝐺‘𝐶)) / -(𝑋 − 𝐶)) = (((𝐺‘𝐶) − (𝐺‘𝑋)) / (𝐶 − 𝑋)))
55	26, 50, 54	3eqtr2d 2778	. . . . 5 ⊢ ((𝜑 ∧ 𝑋 < 𝐶) → (𝐻‘𝑋) = (((𝐺‘𝐶) − (𝐺‘𝑋)) / (𝐶 − 𝑋)))
56	55	fvoveq1d 7433	. . . 4 ⊢ ((𝜑 ∧ 𝑋 < 𝐶) → (abs‘((𝐻‘𝑋) − (𝐹‘𝐶))) = (abs‘((((𝐺‘𝐶) − (𝐺‘𝑋)) / (𝐶 − 𝑋)) − (𝐹‘𝐶))))
57		ftc1.e	. . . . 5 ⊢ (𝜑 → 𝐸 ∈ ℝ⁺)
58		ftc1.r	. . . . 5 ⊢ (𝜑 → 𝑅 ∈ ℝ⁺)
59		ftc1.fc	. . . . 5 ⊢ ((𝜑 ∧ 𝑦 ∈ 𝐷) → ((abs‘(𝑦 − 𝐶)) < 𝑅 → (abs‘((𝐹‘𝑦) − (𝐹‘𝐶))) < 𝐸))
60		ftc1.x2	. . . . 5 ⊢ (𝜑 → (abs‘(𝑋 − 𝐶)) < 𝑅)
61	43	subidd 11561	. . . . . . 7 ⊢ (𝜑 → (𝐶 − 𝐶) = 0)
62	61	abs00bd 15240	. . . . . 6 ⊢ (𝜑 → (abs‘(𝐶 − 𝐶)) = 0)
63	58	rpgt0d 13021	. . . . . 6 ⊢ (𝜑 → 0 < 𝑅)
64	62, 63	eqbrtrd 5170	. . . . 5 ⊢ (𝜑 → (abs‘(𝐶 − 𝐶)) < 𝑅)
65	27, 1, 2, 28, 29, 30, 31, 8, 32, 33, 34, 35, 23, 57, 58, 59, 5, 60, 9, 64	ftc1lem4 25563	. . . 4 ⊢ ((𝜑 ∧ 𝑋 < 𝐶) → (abs‘((((𝐺‘𝐶) − (𝐺‘𝑋)) / (𝐶 − 𝑋)) − (𝐹‘𝐶))) < 𝐸)
66	56, 65	eqbrtrd 5170	. . 3 ⊢ ((𝜑 ∧ 𝑋 < 𝐶) → (abs‘((𝐻‘𝑋) − (𝐹‘𝐶))) < 𝐸)
67	5	adantr 481	. . . . . . 7 ⊢ ((𝜑 ∧ 𝐶 < 𝑋) → 𝑋 ∈ (𝐴[,]𝐵))
68	10	adantr 481	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝐶 < 𝑋) → 𝐶 ∈ ℝ)
69		simpr 485	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝐶 < 𝑋) → 𝐶 < 𝑋)
70	68, 69	gtned 11351	. . . . . . 7 ⊢ ((𝜑 ∧ 𝐶 < 𝑋) → 𝑋 ≠ 𝐶)
71	67, 70, 17	sylanbrc 583	. . . . . 6 ⊢ ((𝜑 ∧ 𝐶 < 𝑋) → 𝑋 ∈ ((𝐴[,]𝐵) ∖ {𝐶}))
72	71, 25	syl 17	. . . . 5 ⊢ ((𝜑 ∧ 𝐶 < 𝑋) → (𝐻‘𝑋) = (((𝐺‘𝑋) − (𝐺‘𝐶)) / (𝑋 − 𝐶)))
73	72	fvoveq1d 7433	. . . 4 ⊢ ((𝜑 ∧ 𝐶 < 𝑋) → (abs‘((𝐻‘𝑋) − (𝐹‘𝐶))) = (abs‘((((𝐺‘𝑋) − (𝐺‘𝐶)) / (𝑋 − 𝐶)) − (𝐹‘𝐶))))
74	27, 1, 2, 28, 29, 30, 31, 8, 32, 33, 34, 35, 23, 57, 58, 59, 9, 64, 5, 60	ftc1lem4 25563	. . . 4 ⊢ ((𝜑 ∧ 𝐶 < 𝑋) → (abs‘((((𝐺‘𝑋) − (𝐺‘𝐶)) / (𝑋 − 𝐶)) − (𝐹‘𝐶))) < 𝐸)
75	73, 74	eqbrtrd 5170	. . 3 ⊢ ((𝜑 ∧ 𝐶 < 𝑋) → (abs‘((𝐻‘𝑋) − (𝐹‘𝐶))) < 𝐸)
76	66, 75	jaodan 956	. 2 ⊢ ((𝜑 ∧ (𝑋 < 𝐶 ∨ 𝐶 < 𝑋)) → (abs‘((𝐻‘𝑋) − (𝐹‘𝐶))) < 𝐸)
77	12, 76	syldan 591	1 ⊢ ((𝜑 ∧ 𝑋 ≠ 𝐶) → (abs‘((𝐻‘𝑋) − (𝐹‘𝐶))) < 𝐸)

Colors of variables: wff setvar class

Syntax hints: → wi 4 ∧ wa 396 ∨ wo 845 = wceq 1541 ∈ wcel 2106 ≠ wne 2940 ∖ cdif 3945 ⊆ wss 3948 {csn 4628 class class class wbr 5148 ↦ cmpt 5231 ‘cfv 6543 (class class class)co 7411 ℂcc 11110 ℝcr 11111 0cc0 11112 < clt 11250 ≤ cle 11251 − cmin 11446 -cneg 11447 / cdiv 11873 ℝ⁺crp 12976 (,)cioo 13326 [,]cicc 13329 abscabs 15183 ↾_t crest 17368 TopOpenctopn 17369 ℂ_fldccnfld 20950 CnP ccnp 22736 𝐿¹cibl 25141 ∫citg 25142

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 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-11 2154 ax-12 2171 ax-ext 2703 ax-rep 5285 ax-sep 5299 ax-nul 5306 ax-pow 5363 ax-pr 5427 ax-un 7727 ax-inf2 9638 ax-cc 10432 ax-cnex 11168 ax-resscn 11169 ax-1cn 11170 ax-icn 11171 ax-addcl 11172 ax-addrcl 11173 ax-mulcl 11174 ax-mulrcl 11175 ax-mulcom 11176 ax-addass 11177 ax-mulass 11178 ax-distr 11179 ax-i2m1 11180 ax-1ne0 11181 ax-1rid 11182 ax-rnegex 11183 ax-rrecex 11184 ax-cnre 11185 ax-pre-lttri 11186 ax-pre-lttrn 11187 ax-pre-ltadd 11188 ax-pre-mulgt0 11189 ax-pre-sup 11190 ax-addf 11191 ax-mulf 11192

This theorem depends on definitions: df-bi 206 df-an 397 df-or 846 df-3or 1088 df-3an 1089 df-tru 1544 df-fal 1554 df-ex 1782 df-nf 1786 df-sb 2068 df-mo 2534 df-eu 2563 df-clab 2710 df-cleq 2724 df-clel 2810 df-nfc 2885 df-ne 2941 df-nel 3047 df-ral 3062 df-rex 3071 df-rmo 3376 df-reu 3377 df-rab 3433 df-v 3476 df-sbc 3778 df-csb 3894 df-dif 3951 df-un 3953 df-in 3955 df-ss 3965 df-pss 3967 df-symdif 4242 df-nul 4323 df-if 4529 df-pw 4604 df-sn 4629 df-pr 4631 df-tp 4633 df-op 4635 df-uni 4909 df-int 4951 df-iun 4999 df-iin 5000 df-disj 5114 df-br 5149 df-opab 5211 df-mpt 5232 df-tr 5266 df-id 5574 df-eprel 5580 df-po 5588 df-so 5589 df-fr 5631 df-se 5632 df-we 5633 df-xp 5682 df-rel 5683 df-cnv 5684 df-co 5685 df-dm 5686 df-rn 5687 df-res 5688 df-ima 5689 df-pred 6300 df-ord 6367 df-on 6368 df-lim 6369 df-suc 6370 df-iota 6495 df-fun 6545 df-fn 6546 df-f 6547 df-f1 6548 df-fo 6549 df-f1o 6550 df-fv 6551 df-isom 6552 df-riota 7367 df-ov 7414 df-oprab 7415 df-mpo 7416 df-of 7672 df-ofr 7673 df-om 7858 df-1st 7977 df-2nd 7978 df-supp 8149 df-frecs 8268 df-wrecs 8299 df-recs 8373 df-rdg 8412 df-1o 8468 df-2o 8469 df-oadd 8472 df-omul 8473 df-er 8705 df-map 8824 df-pm 8825 df-ixp 8894 df-en 8942 df-dom 8943 df-sdom 8944 df-fin 8945 df-fsupp 9364 df-fi 9408 df-sup 9439 df-inf 9440 df-oi 9507 df-dju 9898 df-card 9936 df-acn 9939 df-pnf 11252 df-mnf 11253 df-xr 11254 df-ltxr 11255 df-le 11256 df-sub 11448 df-neg 11449 df-div 11874 df-nn 12215 df-2 12277 df-3 12278 df-4 12279 df-5 12280 df-6 12281 df-7 12282 df-8 12283 df-9 12284 df-n0 12475 df-z 12561 df-dec 12680 df-uz 12825 df-q 12935 df-rp 12977 df-xneg 13094 df-xadd 13095 df-xmul 13096 df-ioo 13330 df-ioc 13331 df-ico 13332 df-icc 13333 df-fz 13487 df-fzo 13630 df-fl 13759 df-mod 13837 df-seq 13969 df-exp 14030 df-hash 14293 df-cj 15048 df-re 15049 df-im 15050 df-sqrt 15184 df-abs 15185 df-clim 15434 df-rlim 15435 df-sum 15635 df-struct 17082 df-sets 17099 df-slot 17117 df-ndx 17129 df-base 17147 df-ress 17176 df-plusg 17212 df-mulr 17213 df-starv 17214 df-sca 17215 df-vsca 17216 df-ip 17217 df-tset 17218 df-ple 17219 df-ds 17221 df-unif 17222 df-hom 17223 df-cco 17224 df-rest 17370 df-topn 17371 df-0g 17389 df-gsum 17390 df-topgen 17391 df-pt 17392 df-prds 17395 df-xrs 17450 df-qtop 17455 df-imas 17456 df-xps 17458 df-mre 17532 df-mrc 17533 df-acs 17535 df-mgm 18563 df-sgrp 18612 df-mnd 18628 df-submnd 18674 df-mulg 18953 df-cntz 19183 df-cmn 19652 df-psmet 20942 df-xmet 20943 df-met 20944 df-bl 20945 df-mopn 20946 df-cnfld 20951 df-top 22403 df-topon 22420 df-topsp 22442 df-bases 22456 df-cn 22738 df-cnp 22739 df-cmp 22898 df-tx 23073 df-hmeo 23266 df-xms 23833 df-ms 23834 df-tms 23835 df-cncf 24401 df-ovol 24988 df-vol 24989 df-mbf 25143 df-itg1 25144 df-itg2 25145 df-ibl 25146 df-itg 25147 df-0p 25194

This theorem is referenced by: ftc1lem6 25565

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