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Theorem caucvgrlem2 15625

Description: Lemma for caucvgr 15626. (Contributed by NM, 4-Apr-2005.) (Proof shortened by Mario Carneiro, 8-May-2016.)

**Hypotheses**
Ref	Expression
caucvgr.1	⊢ (𝜑 → 𝐴 ⊆ ℝ)
caucvgr.2	⊢ (𝜑 → 𝐹:𝐴⟶ℂ)
caucvgr.3	⊢ (𝜑 → sup(𝐴, ℝ^*, < ) = +∞)
caucvgr.4	⊢ (𝜑 → ∀𝑥 ∈ ℝ⁺ ∃𝑗 ∈ 𝐴 ∀𝑘 ∈ 𝐴 (𝑗 ≤ 𝑘 → (abs‘((𝐹‘𝑘) − (𝐹‘𝑗))) < 𝑥))
caucvgrlem2.5	⊢ 𝐻:ℂ⟶ℝ
caucvgrlem2.6	⊢ (((𝐹‘𝑘) ∈ ℂ ∧ (𝐹‘𝑗) ∈ ℂ) → (abs‘((𝐻‘(𝐹‘𝑘)) − (𝐻‘(𝐹‘𝑗)))) ≤ (abs‘((𝐹‘𝑘) − (𝐹‘𝑗))))

**Assertion**
Ref	Expression
caucvgrlem2	⊢ (𝜑 → (𝑛 ∈ 𝐴 ↦ (𝐻‘(𝐹‘𝑛))) ⇝_𝑟 ( ⇝_𝑟 ‘(𝐻 ∘ 𝐹)))

Distinct variable groups: 𝑗,𝑘,𝑛,𝑥,𝐴 𝑗,𝐹,𝑘,𝑛,𝑥 𝑗,𝐻,𝑘,𝑛,𝑥 𝜑,𝑗,𝑘,𝑛,𝑥

**Proof of Theorem caucvgrlem2**
Step	Hyp	Ref	Expression
1		caucvgrlem2.5	. . 3 ⊢ 𝐻:ℂ⟶ℝ
2		caucvgr.2	. . 3 ⊢ (𝜑 → 𝐹:𝐴⟶ℂ)
3		fcompt 7132	. . 3 ⊢ ((𝐻:ℂ⟶ℝ ∧ 𝐹:𝐴⟶ℂ) → (𝐻 ∘ 𝐹) = (𝑛 ∈ 𝐴 ↦ (𝐻‘(𝐹‘𝑛))))
4	1, 2, 3	sylancr 585	. 2 ⊢ (𝜑 → (𝐻 ∘ 𝐹) = (𝑛 ∈ 𝐴 ↦ (𝐻‘(𝐹‘𝑛))))
5		caucvgr.1	. . . . 5 ⊢ (𝜑 → 𝐴 ⊆ ℝ)
6		fco 6740	. . . . . 6 ⊢ ((𝐻:ℂ⟶ℝ ∧ 𝐹:𝐴⟶ℂ) → (𝐻 ∘ 𝐹):𝐴⟶ℝ)
7	1, 2, 6	sylancr 585	. . . . 5 ⊢ (𝜑 → (𝐻 ∘ 𝐹):𝐴⟶ℝ)
8		caucvgr.3	. . . . 5 ⊢ (𝜑 → sup(𝐴, ℝ^*, < ) = +∞)
9		caucvgr.4	. . . . . 6 ⊢ (𝜑 → ∀𝑥 ∈ ℝ⁺ ∃𝑗 ∈ 𝐴 ∀𝑘 ∈ 𝐴 (𝑗 ≤ 𝑘 → (abs‘((𝐹‘𝑘) − (𝐹‘𝑗))) < 𝑥))
10	2	ad2antrr 722	. . . . . . . . . . . . . . 15 ⊢ (((𝜑 ∧ 𝑥 ∈ ℝ⁺) ∧ (𝑗 ∈ 𝐴 ∧ 𝑘 ∈ 𝐴)) → 𝐹:𝐴⟶ℂ)
11		simprr 769	. . . . . . . . . . . . . . 15 ⊢ (((𝜑 ∧ 𝑥 ∈ ℝ⁺) ∧ (𝑗 ∈ 𝐴 ∧ 𝑘 ∈ 𝐴)) → 𝑘 ∈ 𝐴)
12	10, 11	ffvelcdmd 7086	. . . . . . . . . . . . . 14 ⊢ (((𝜑 ∧ 𝑥 ∈ ℝ⁺) ∧ (𝑗 ∈ 𝐴 ∧ 𝑘 ∈ 𝐴)) → (𝐹‘𝑘) ∈ ℂ)
13		simprl 767	. . . . . . . . . . . . . . 15 ⊢ (((𝜑 ∧ 𝑥 ∈ ℝ⁺) ∧ (𝑗 ∈ 𝐴 ∧ 𝑘 ∈ 𝐴)) → 𝑗 ∈ 𝐴)
14	10, 13	ffvelcdmd 7086	. . . . . . . . . . . . . 14 ⊢ (((𝜑 ∧ 𝑥 ∈ ℝ⁺) ∧ (𝑗 ∈ 𝐴 ∧ 𝑘 ∈ 𝐴)) → (𝐹‘𝑗) ∈ ℂ)
15		caucvgrlem2.6	. . . . . . . . . . . . . 14 ⊢ (((𝐹‘𝑘) ∈ ℂ ∧ (𝐹‘𝑗) ∈ ℂ) → (abs‘((𝐻‘(𝐹‘𝑘)) − (𝐻‘(𝐹‘𝑗)))) ≤ (abs‘((𝐹‘𝑘) − (𝐹‘𝑗))))
16	12, 14, 15	syl2anc 582	. . . . . . . . . . . . 13 ⊢ (((𝜑 ∧ 𝑥 ∈ ℝ⁺) ∧ (𝑗 ∈ 𝐴 ∧ 𝑘 ∈ 𝐴)) → (abs‘((𝐻‘(𝐹‘𝑘)) − (𝐻‘(𝐹‘𝑗)))) ≤ (abs‘((𝐹‘𝑘) − (𝐹‘𝑗))))
17	1	ffvelcdmi 7084	. . . . . . . . . . . . . . . . . 18 ⊢ ((𝐹‘𝑘) ∈ ℂ → (𝐻‘(𝐹‘𝑘)) ∈ ℝ)
18	12, 17	syl 17	. . . . . . . . . . . . . . . . 17 ⊢ (((𝜑 ∧ 𝑥 ∈ ℝ⁺) ∧ (𝑗 ∈ 𝐴 ∧ 𝑘 ∈ 𝐴)) → (𝐻‘(𝐹‘𝑘)) ∈ ℝ)
19	1	ffvelcdmi 7084	. . . . . . . . . . . . . . . . . 18 ⊢ ((𝐹‘𝑗) ∈ ℂ → (𝐻‘(𝐹‘𝑗)) ∈ ℝ)
20	14, 19	syl 17	. . . . . . . . . . . . . . . . 17 ⊢ (((𝜑 ∧ 𝑥 ∈ ℝ⁺) ∧ (𝑗 ∈ 𝐴 ∧ 𝑘 ∈ 𝐴)) → (𝐻‘(𝐹‘𝑗)) ∈ ℝ)
21	18, 20	resubcld 11646	. . . . . . . . . . . . . . . 16 ⊢ (((𝜑 ∧ 𝑥 ∈ ℝ⁺) ∧ (𝑗 ∈ 𝐴 ∧ 𝑘 ∈ 𝐴)) → ((𝐻‘(𝐹‘𝑘)) − (𝐻‘(𝐹‘𝑗))) ∈ ℝ)
22	21	recnd 11246	. . . . . . . . . . . . . . 15 ⊢ (((𝜑 ∧ 𝑥 ∈ ℝ⁺) ∧ (𝑗 ∈ 𝐴 ∧ 𝑘 ∈ 𝐴)) → ((𝐻‘(𝐹‘𝑘)) − (𝐻‘(𝐹‘𝑗))) ∈ ℂ)
23	22	abscld 15387	. . . . . . . . . . . . . 14 ⊢ (((𝜑 ∧ 𝑥 ∈ ℝ⁺) ∧ (𝑗 ∈ 𝐴 ∧ 𝑘 ∈ 𝐴)) → (abs‘((𝐻‘(𝐹‘𝑘)) − (𝐻‘(𝐹‘𝑗)))) ∈ ℝ)
24	12, 14	subcld 11575	. . . . . . . . . . . . . . 15 ⊢ (((𝜑 ∧ 𝑥 ∈ ℝ⁺) ∧ (𝑗 ∈ 𝐴 ∧ 𝑘 ∈ 𝐴)) → ((𝐹‘𝑘) − (𝐹‘𝑗)) ∈ ℂ)
25	24	abscld 15387	. . . . . . . . . . . . . 14 ⊢ (((𝜑 ∧ 𝑥 ∈ ℝ⁺) ∧ (𝑗 ∈ 𝐴 ∧ 𝑘 ∈ 𝐴)) → (abs‘((𝐹‘𝑘) − (𝐹‘𝑗))) ∈ ℝ)
26		rpre 12986	. . . . . . . . . . . . . . 15 ⊢ (𝑥 ∈ ℝ⁺ → 𝑥 ∈ ℝ)
27	26	ad2antlr 723	. . . . . . . . . . . . . 14 ⊢ (((𝜑 ∧ 𝑥 ∈ ℝ⁺) ∧ (𝑗 ∈ 𝐴 ∧ 𝑘 ∈ 𝐴)) → 𝑥 ∈ ℝ)
28		lelttr 11308	. . . . . . . . . . . . . 14 ⊢ (((abs‘((𝐻‘(𝐹‘𝑘)) − (𝐻‘(𝐹‘𝑗)))) ∈ ℝ ∧ (abs‘((𝐹‘𝑘) − (𝐹‘𝑗))) ∈ ℝ ∧ 𝑥 ∈ ℝ) → (((abs‘((𝐻‘(𝐹‘𝑘)) − (𝐻‘(𝐹‘𝑗)))) ≤ (abs‘((𝐹‘𝑘) − (𝐹‘𝑗))) ∧ (abs‘((𝐹‘𝑘) − (𝐹‘𝑗))) < 𝑥) → (abs‘((𝐻‘(𝐹‘𝑘)) − (𝐻‘(𝐹‘𝑗)))) < 𝑥))
29	23, 25, 27, 28	syl3anc 1369	. . . . . . . . . . . . 13 ⊢ (((𝜑 ∧ 𝑥 ∈ ℝ⁺) ∧ (𝑗 ∈ 𝐴 ∧ 𝑘 ∈ 𝐴)) → (((abs‘((𝐻‘(𝐹‘𝑘)) − (𝐻‘(𝐹‘𝑗)))) ≤ (abs‘((𝐹‘𝑘) − (𝐹‘𝑗))) ∧ (abs‘((𝐹‘𝑘) − (𝐹‘𝑗))) < 𝑥) → (abs‘((𝐻‘(𝐹‘𝑘)) − (𝐻‘(𝐹‘𝑗)))) < 𝑥))
30	16, 29	mpand 691	. . . . . . . . . . . 12 ⊢ (((𝜑 ∧ 𝑥 ∈ ℝ⁺) ∧ (𝑗 ∈ 𝐴 ∧ 𝑘 ∈ 𝐴)) → ((abs‘((𝐹‘𝑘) − (𝐹‘𝑗))) < 𝑥 → (abs‘((𝐻‘(𝐹‘𝑘)) − (𝐻‘(𝐹‘𝑗)))) < 𝑥))
31		fvco3 6989	. . . . . . . . . . . . . . . 16 ⊢ ((𝐹:𝐴⟶ℂ ∧ 𝑘 ∈ 𝐴) → ((𝐻 ∘ 𝐹)‘𝑘) = (𝐻‘(𝐹‘𝑘)))
32	10, 11, 31	syl2anc 582	. . . . . . . . . . . . . . 15 ⊢ (((𝜑 ∧ 𝑥 ∈ ℝ⁺) ∧ (𝑗 ∈ 𝐴 ∧ 𝑘 ∈ 𝐴)) → ((𝐻 ∘ 𝐹)‘𝑘) = (𝐻‘(𝐹‘𝑘)))
33		fvco3 6989	. . . . . . . . . . . . . . . 16 ⊢ ((𝐹:𝐴⟶ℂ ∧ 𝑗 ∈ 𝐴) → ((𝐻 ∘ 𝐹)‘𝑗) = (𝐻‘(𝐹‘𝑗)))
34	10, 13, 33	syl2anc 582	. . . . . . . . . . . . . . 15 ⊢ (((𝜑 ∧ 𝑥 ∈ ℝ⁺) ∧ (𝑗 ∈ 𝐴 ∧ 𝑘 ∈ 𝐴)) → ((𝐻 ∘ 𝐹)‘𝑗) = (𝐻‘(𝐹‘𝑗)))
35	32, 34	oveq12d 7429	. . . . . . . . . . . . . 14 ⊢ (((𝜑 ∧ 𝑥 ∈ ℝ⁺) ∧ (𝑗 ∈ 𝐴 ∧ 𝑘 ∈ 𝐴)) → (((𝐻 ∘ 𝐹)‘𝑘) − ((𝐻 ∘ 𝐹)‘𝑗)) = ((𝐻‘(𝐹‘𝑘)) − (𝐻‘(𝐹‘𝑗))))
36	35	fveq2d 6894	. . . . . . . . . . . . 13 ⊢ (((𝜑 ∧ 𝑥 ∈ ℝ⁺) ∧ (𝑗 ∈ 𝐴 ∧ 𝑘 ∈ 𝐴)) → (abs‘(((𝐻 ∘ 𝐹)‘𝑘) − ((𝐻 ∘ 𝐹)‘𝑗))) = (abs‘((𝐻‘(𝐹‘𝑘)) − (𝐻‘(𝐹‘𝑗)))))
37	36	breq1d 5157	. . . . . . . . . . . 12 ⊢ (((𝜑 ∧ 𝑥 ∈ ℝ⁺) ∧ (𝑗 ∈ 𝐴 ∧ 𝑘 ∈ 𝐴)) → ((abs‘(((𝐻 ∘ 𝐹)‘𝑘) − ((𝐻 ∘ 𝐹)‘𝑗))) < 𝑥 ↔ (abs‘((𝐻‘(𝐹‘𝑘)) − (𝐻‘(𝐹‘𝑗)))) < 𝑥))
38	30, 37	sylibrd 258	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ 𝑥 ∈ ℝ⁺) ∧ (𝑗 ∈ 𝐴 ∧ 𝑘 ∈ 𝐴)) → ((abs‘((𝐹‘𝑘) − (𝐹‘𝑗))) < 𝑥 → (abs‘(((𝐻 ∘ 𝐹)‘𝑘) − ((𝐻 ∘ 𝐹)‘𝑗))) < 𝑥))
39	38	imim2d 57	. . . . . . . . . 10 ⊢ (((𝜑 ∧ 𝑥 ∈ ℝ⁺) ∧ (𝑗 ∈ 𝐴 ∧ 𝑘 ∈ 𝐴)) → ((𝑗 ≤ 𝑘 → (abs‘((𝐹‘𝑘) − (𝐹‘𝑗))) < 𝑥) → (𝑗 ≤ 𝑘 → (abs‘(((𝐻 ∘ 𝐹)‘𝑘) − ((𝐻 ∘ 𝐹)‘𝑗))) < 𝑥)))
40	39	anassrs 466	. . . . . . . . 9 ⊢ ((((𝜑 ∧ 𝑥 ∈ ℝ⁺) ∧ 𝑗 ∈ 𝐴) ∧ 𝑘 ∈ 𝐴) → ((𝑗 ≤ 𝑘 → (abs‘((𝐹‘𝑘) − (𝐹‘𝑗))) < 𝑥) → (𝑗 ≤ 𝑘 → (abs‘(((𝐻 ∘ 𝐹)‘𝑘) − ((𝐻 ∘ 𝐹)‘𝑗))) < 𝑥)))
41	40	ralimdva 3165	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑥 ∈ ℝ⁺) ∧ 𝑗 ∈ 𝐴) → (∀𝑘 ∈ 𝐴 (𝑗 ≤ 𝑘 → (abs‘((𝐹‘𝑘) − (𝐹‘𝑗))) < 𝑥) → ∀𝑘 ∈ 𝐴 (𝑗 ≤ 𝑘 → (abs‘(((𝐻 ∘ 𝐹)‘𝑘) − ((𝐻 ∘ 𝐹)‘𝑗))) < 𝑥)))
42	41	reximdva 3166	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ ℝ⁺) → (∃𝑗 ∈ 𝐴 ∀𝑘 ∈ 𝐴 (𝑗 ≤ 𝑘 → (abs‘((𝐹‘𝑘) − (𝐹‘𝑗))) < 𝑥) → ∃𝑗 ∈ 𝐴 ∀𝑘 ∈ 𝐴 (𝑗 ≤ 𝑘 → (abs‘(((𝐻 ∘ 𝐹)‘𝑘) − ((𝐻 ∘ 𝐹)‘𝑗))) < 𝑥)))
43	42	ralimdva 3165	. . . . . 6 ⊢ (𝜑 → (∀𝑥 ∈ ℝ⁺ ∃𝑗 ∈ 𝐴 ∀𝑘 ∈ 𝐴 (𝑗 ≤ 𝑘 → (abs‘((𝐹‘𝑘) − (𝐹‘𝑗))) < 𝑥) → ∀𝑥 ∈ ℝ⁺ ∃𝑗 ∈ 𝐴 ∀𝑘 ∈ 𝐴 (𝑗 ≤ 𝑘 → (abs‘(((𝐻 ∘ 𝐹)‘𝑘) − ((𝐻 ∘ 𝐹)‘𝑗))) < 𝑥)))
44	9, 43	mpd 15	. . . . 5 ⊢ (𝜑 → ∀𝑥 ∈ ℝ⁺ ∃𝑗 ∈ 𝐴 ∀𝑘 ∈ 𝐴 (𝑗 ≤ 𝑘 → (abs‘(((𝐻 ∘ 𝐹)‘𝑘) − ((𝐻 ∘ 𝐹)‘𝑗))) < 𝑥))
45	5, 7, 8, 44	caurcvgr 15624	. . . 4 ⊢ (𝜑 → (𝐻 ∘ 𝐹) ⇝_𝑟 (lim sup‘(𝐻 ∘ 𝐹)))
46		rlimrel 15441	. . . . 5 ⊢ Rel ⇝_𝑟
47	46	releldmi 5946	. . . 4 ⊢ ((𝐻 ∘ 𝐹) ⇝_𝑟 (lim sup‘(𝐻 ∘ 𝐹)) → (𝐻 ∘ 𝐹) ∈ dom ⇝_𝑟 )
48	45, 47	syl 17	. . 3 ⊢ (𝜑 → (𝐻 ∘ 𝐹) ∈ dom ⇝_𝑟 )
49		ax-resscn 11169	. . . . 5 ⊢ ℝ ⊆ ℂ
50		fss 6733	. . . . 5 ⊢ (((𝐻 ∘ 𝐹):𝐴⟶ℝ ∧ ℝ ⊆ ℂ) → (𝐻 ∘ 𝐹):𝐴⟶ℂ)
51	7, 49, 50	sylancl 584	. . . 4 ⊢ (𝜑 → (𝐻 ∘ 𝐹):𝐴⟶ℂ)
52	51, 8	rlimdm 15499	. . 3 ⊢ (𝜑 → ((𝐻 ∘ 𝐹) ∈ dom ⇝_𝑟 ↔ (𝐻 ∘ 𝐹) ⇝_𝑟 ( ⇝_𝑟 ‘(𝐻 ∘ 𝐹))))
53	48, 52	mpbid 231	. 2 ⊢ (𝜑 → (𝐻 ∘ 𝐹) ⇝_𝑟 ( ⇝_𝑟 ‘(𝐻 ∘ 𝐹)))
54	4, 53	eqbrtrrd 5171	1 ⊢ (𝜑 → (𝑛 ∈ 𝐴 ↦ (𝐻‘(𝐹‘𝑛))) ⇝_𝑟 ( ⇝_𝑟 ‘(𝐻 ∘ 𝐹)))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ∧ wa 394 = wceq 1539 ∈ wcel 2104 ∀wral 3059 ∃wrex 3068 ⊆ wss 3947 class class class wbr 5147 ↦ cmpt 5230 dom cdm 5675 ∘ ccom 5679 ⟶wf 6538 ‘cfv 6542 (class class class)co 7411 supcsup 9437 ℂcc 11110 ℝcr 11111 +∞cpnf 11249 ℝ^*cxr 11251 < clt 11252 ≤ cle 11253 − cmin 11448 ℝ⁺crp 12978 abscabs 15185 lim supclsp 15418 ⇝_𝑟 crli 15433

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 1911 ax-6 1969 ax-7 2009 ax-8 2106 ax-9 2114 ax-10 2135 ax-11 2152 ax-12 2169 ax-ext 2701 ax-sep 5298 ax-nul 5305 ax-pow 5362 ax-pr 5426 ax-un 7727 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

This theorem depends on definitions: df-bi 206 df-an 395 df-or 844 df-3or 1086 df-3an 1087 df-tru 1542 df-fal 1552 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2532 df-eu 2561 df-clab 2708 df-cleq 2722 df-clel 2808 df-nfc 2883 df-ne 2939 df-nel 3045 df-ral 3060 df-rex 3069 df-rmo 3374 df-reu 3375 df-rab 3431 df-v 3474 df-sbc 3777 df-csb 3893 df-dif 3950 df-un 3952 df-in 3954 df-ss 3964 df-pss 3966 df-nul 4322 df-if 4528 df-pw 4603 df-sn 4628 df-pr 4630 df-op 4634 df-uni 4908 df-iun 4998 df-br 5148 df-opab 5210 df-mpt 5231 df-tr 5265 df-id 5573 df-eprel 5579 df-po 5587 df-so 5588 df-fr 5630 df-we 5632 df-xp 5681 df-rel 5682 df-cnv 5683 df-co 5684 df-dm 5685 df-rn 5686 df-res 5687 df-ima 5688 df-pred 6299 df-ord 6366 df-on 6367 df-lim 6368 df-suc 6369 df-iota 6494 df-fun 6544 df-fn 6545 df-f 6546 df-f1 6547 df-fo 6548 df-f1o 6549 df-fv 6550 df-riota 7367 df-ov 7414 df-oprab 7415 df-mpo 7416 df-om 7858 df-2nd 7978 df-frecs 8268 df-wrecs 8299 df-recs 8373 df-rdg 8412 df-er 8705 df-pm 8825 df-en 8942 df-dom 8943 df-sdom 8944 df-sup 9439 df-inf 9440 df-pnf 11254 df-mnf 11255 df-xr 11256 df-ltxr 11257 df-le 11258 df-sub 11450 df-neg 11451 df-div 11876 df-nn 12217 df-2 12279 df-3 12280 df-n0 12477 df-z 12563 df-uz 12827 df-rp 12979 df-ico 13334 df-seq 13971 df-exp 14032 df-cj 15050 df-re 15051 df-im 15052 df-sqrt 15186 df-abs 15187 df-limsup 15419 df-rlim 15437

This theorem is referenced by: caucvgr 15626

W3C validator