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Theorem caushft 36677

Description: A shifted Cauchy sequence is Cauchy. (Contributed by Jeff Madsen, 2-Sep-2009.) (Revised by Mario Carneiro, 5-Jun-2014.)

**Hypotheses**
Ref	Expression
caures.1	⊢ 𝑍 = (ℤ_≥‘𝑀)
caures.3	⊢ (𝜑 → 𝑀 ∈ ℤ)
caures.4	⊢ (𝜑 → 𝐷 ∈ (Met‘𝑋))
caushft.4	⊢ 𝑊 = (ℤ_≥‘(𝑀 + 𝑁))
caushft.5	⊢ (𝜑 → 𝑁 ∈ ℤ)
caushft.7	⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → (𝐹‘𝑘) = (𝐺‘(𝑘 + 𝑁)))
caushft.8	⊢ (𝜑 → 𝐹 ∈ (Cau‘𝐷))
caushft.9	⊢ (𝜑 → 𝐺:𝑊⟶𝑋)

**Assertion**
Ref	Expression
caushft	⊢ (𝜑 → 𝐺 ∈ (Cau‘𝐷))

Distinct variable groups: 𝐷,𝑘 𝑘,𝐺 𝜑,𝑘 𝑘,𝑋 𝑘,𝐹 𝑘,𝑁 𝑘,𝑍 Allowed substitution hints: 𝑀(𝑘) 𝑊(𝑘)

Proof of Theorem caushft Dummy variables 𝑗 𝑚 𝑛 𝑥 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		caushft.8	. . . . 5 ⊢ (𝜑 → 𝐹 ∈ (Cau‘𝐷))
2		caures.1	. . . . . 6 ⊢ 𝑍 = (ℤ_≥‘𝑀)
3		caures.4	. . . . . . 7 ⊢ (𝜑 → 𝐷 ∈ (Met‘𝑋))
4		metxmet 23840	. . . . . . 7 ⊢ (𝐷 ∈ (Met‘𝑋) → 𝐷 ∈ (∞Met‘𝑋))
5	3, 4	syl 17	. . . . . 6 ⊢ (𝜑 → 𝐷 ∈ (∞Met‘𝑋))
6		caures.3	. . . . . 6 ⊢ (𝜑 → 𝑀 ∈ ℤ)
7		caushft.7	. . . . . 6 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → (𝐹‘𝑘) = (𝐺‘(𝑘 + 𝑁)))
8	7	ralrimiva 3147	. . . . . . 7 ⊢ (𝜑 → ∀𝑘 ∈ 𝑍 (𝐹‘𝑘) = (𝐺‘(𝑘 + 𝑁)))
9		fveq2 6892	. . . . . . . . 9 ⊢ (𝑘 = 𝑗 → (𝐹‘𝑘) = (𝐹‘𝑗))
10		fvoveq1 7432	. . . . . . . . 9 ⊢ (𝑘 = 𝑗 → (𝐺‘(𝑘 + 𝑁)) = (𝐺‘(𝑗 + 𝑁)))
11	9, 10	eqeq12d 2749	. . . . . . . 8 ⊢ (𝑘 = 𝑗 → ((𝐹‘𝑘) = (𝐺‘(𝑘 + 𝑁)) ↔ (𝐹‘𝑗) = (𝐺‘(𝑗 + 𝑁))))
12	11	rspccva 3612	. . . . . . 7 ⊢ ((∀𝑘 ∈ 𝑍 (𝐹‘𝑘) = (𝐺‘(𝑘 + 𝑁)) ∧ 𝑗 ∈ 𝑍) → (𝐹‘𝑗) = (𝐺‘(𝑗 + 𝑁)))
13	8, 12	sylan 581	. . . . . 6 ⊢ ((𝜑 ∧ 𝑗 ∈ 𝑍) → (𝐹‘𝑗) = (𝐺‘(𝑗 + 𝑁)))
14	2, 5, 6, 7, 13	iscau4 24796	. . . . 5 ⊢ (𝜑 → (𝐹 ∈ (Cau‘𝐷) ↔ (𝐹 ∈ (𝑋 ↑_pm ℂ) ∧ ∀𝑥 ∈ ℝ⁺ ∃𝑗 ∈ 𝑍 ∀𝑘 ∈ (ℤ_≥‘𝑗)(𝑘 ∈ dom 𝐹 ∧ (𝐺‘(𝑘 + 𝑁)) ∈ 𝑋 ∧ ((𝐺‘(𝑘 + 𝑁))𝐷(𝐺‘(𝑗 + 𝑁))) < 𝑥))))
15	1, 14	mpbid 231	. . . 4 ⊢ (𝜑 → (𝐹 ∈ (𝑋 ↑_pm ℂ) ∧ ∀𝑥 ∈ ℝ⁺ ∃𝑗 ∈ 𝑍 ∀𝑘 ∈ (ℤ_≥‘𝑗)(𝑘 ∈ dom 𝐹 ∧ (𝐺‘(𝑘 + 𝑁)) ∈ 𝑋 ∧ ((𝐺‘(𝑘 + 𝑁))𝐷(𝐺‘(𝑗 + 𝑁))) < 𝑥)))
16	15	simprd 497	. . 3 ⊢ (𝜑 → ∀𝑥 ∈ ℝ⁺ ∃𝑗 ∈ 𝑍 ∀𝑘 ∈ (ℤ_≥‘𝑗)(𝑘 ∈ dom 𝐹 ∧ (𝐺‘(𝑘 + 𝑁)) ∈ 𝑋 ∧ ((𝐺‘(𝑘 + 𝑁))𝐷(𝐺‘(𝑗 + 𝑁))) < 𝑥))
17	2	eleq2i 2826	. . . . . . . . 9 ⊢ (𝑗 ∈ 𝑍 ↔ 𝑗 ∈ (ℤ_≥‘𝑀))
18	17	biimpi 215	. . . . . . . 8 ⊢ (𝑗 ∈ 𝑍 → 𝑗 ∈ (ℤ_≥‘𝑀))
19		caushft.5	. . . . . . . 8 ⊢ (𝜑 → 𝑁 ∈ ℤ)
20		eluzadd 12851	. . . . . . . 8 ⊢ ((𝑗 ∈ (ℤ_≥‘𝑀) ∧ 𝑁 ∈ ℤ) → (𝑗 + 𝑁) ∈ (ℤ_≥‘(𝑀 + 𝑁)))
21	18, 19, 20	syl2anr 598	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑗 ∈ 𝑍) → (𝑗 + 𝑁) ∈ (ℤ_≥‘(𝑀 + 𝑁)))
22		caushft.4	. . . . . . 7 ⊢ 𝑊 = (ℤ_≥‘(𝑀 + 𝑁))
23	21, 22	eleqtrrdi 2845	. . . . . 6 ⊢ ((𝜑 ∧ 𝑗 ∈ 𝑍) → (𝑗 + 𝑁) ∈ 𝑊)
24		simplr 768	. . . . . . . . . . . 12 ⊢ (((𝜑 ∧ 𝑗 ∈ 𝑍) ∧ 𝑚 ∈ (ℤ_≥‘(𝑗 + 𝑁))) → 𝑗 ∈ 𝑍)
25	24, 2	eleqtrdi 2844	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ 𝑗 ∈ 𝑍) ∧ 𝑚 ∈ (ℤ_≥‘(𝑗 + 𝑁))) → 𝑗 ∈ (ℤ_≥‘𝑀))
26		eluzelz 12832	. . . . . . . . . . 11 ⊢ (𝑗 ∈ (ℤ_≥‘𝑀) → 𝑗 ∈ ℤ)
27	25, 26	syl 17	. . . . . . . . . 10 ⊢ (((𝜑 ∧ 𝑗 ∈ 𝑍) ∧ 𝑚 ∈ (ℤ_≥‘(𝑗 + 𝑁))) → 𝑗 ∈ ℤ)
28	19	ad2antrr 725	. . . . . . . . . 10 ⊢ (((𝜑 ∧ 𝑗 ∈ 𝑍) ∧ 𝑚 ∈ (ℤ_≥‘(𝑗 + 𝑁))) → 𝑁 ∈ ℤ)
29		simpr 486	. . . . . . . . . 10 ⊢ (((𝜑 ∧ 𝑗 ∈ 𝑍) ∧ 𝑚 ∈ (ℤ_≥‘(𝑗 + 𝑁))) → 𝑚 ∈ (ℤ_≥‘(𝑗 + 𝑁)))
30		eluzsub 12852	. . . . . . . . . 10 ⊢ ((𝑗 ∈ ℤ ∧ 𝑁 ∈ ℤ ∧ 𝑚 ∈ (ℤ_≥‘(𝑗 + 𝑁))) → (𝑚 − 𝑁) ∈ (ℤ_≥‘𝑗))
31	27, 28, 29, 30	syl3anc 1372	. . . . . . . . 9 ⊢ (((𝜑 ∧ 𝑗 ∈ 𝑍) ∧ 𝑚 ∈ (ℤ_≥‘(𝑗 + 𝑁))) → (𝑚 − 𝑁) ∈ (ℤ_≥‘𝑗))
32		simp3 1139	. . . . . . . . . 10 ⊢ ((𝑘 ∈ dom 𝐹 ∧ (𝐺‘(𝑘 + 𝑁)) ∈ 𝑋 ∧ ((𝐺‘(𝑘 + 𝑁))𝐷(𝐺‘(𝑗 + 𝑁))) < 𝑥) → ((𝐺‘(𝑘 + 𝑁))𝐷(𝐺‘(𝑗 + 𝑁))) < 𝑥)
33	32	ralimi 3084	. . . . . . . . 9 ⊢ (∀𝑘 ∈ (ℤ_≥‘𝑗)(𝑘 ∈ dom 𝐹 ∧ (𝐺‘(𝑘 + 𝑁)) ∈ 𝑋 ∧ ((𝐺‘(𝑘 + 𝑁))𝐷(𝐺‘(𝑗 + 𝑁))) < 𝑥) → ∀𝑘 ∈ (ℤ_≥‘𝑗)((𝐺‘(𝑘 + 𝑁))𝐷(𝐺‘(𝑗 + 𝑁))) < 𝑥)
34		fvoveq1 7432	. . . . . . . . . . . 12 ⊢ (𝑘 = (𝑚 − 𝑁) → (𝐺‘(𝑘 + 𝑁)) = (𝐺‘((𝑚 − 𝑁) + 𝑁)))
35	34	oveq1d 7424	. . . . . . . . . . 11 ⊢ (𝑘 = (𝑚 − 𝑁) → ((𝐺‘(𝑘 + 𝑁))𝐷(𝐺‘(𝑗 + 𝑁))) = ((𝐺‘((𝑚 − 𝑁) + 𝑁))𝐷(𝐺‘(𝑗 + 𝑁))))
36	35	breq1d 5159	. . . . . . . . . 10 ⊢ (𝑘 = (𝑚 − 𝑁) → (((𝐺‘(𝑘 + 𝑁))𝐷(𝐺‘(𝑗 + 𝑁))) < 𝑥 ↔ ((𝐺‘((𝑚 − 𝑁) + 𝑁))𝐷(𝐺‘(𝑗 + 𝑁))) < 𝑥))
37	36	rspcv 3609	. . . . . . . . 9 ⊢ ((𝑚 − 𝑁) ∈ (ℤ_≥‘𝑗) → (∀𝑘 ∈ (ℤ_≥‘𝑗)((𝐺‘(𝑘 + 𝑁))𝐷(𝐺‘(𝑗 + 𝑁))) < 𝑥 → ((𝐺‘((𝑚 − 𝑁) + 𝑁))𝐷(𝐺‘(𝑗 + 𝑁))) < 𝑥))
38	31, 33, 37	syl2im 40	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑗 ∈ 𝑍) ∧ 𝑚 ∈ (ℤ_≥‘(𝑗 + 𝑁))) → (∀𝑘 ∈ (ℤ_≥‘𝑗)(𝑘 ∈ dom 𝐹 ∧ (𝐺‘(𝑘 + 𝑁)) ∈ 𝑋 ∧ ((𝐺‘(𝑘 + 𝑁))𝐷(𝐺‘(𝑗 + 𝑁))) < 𝑥) → ((𝐺‘((𝑚 − 𝑁) + 𝑁))𝐷(𝐺‘(𝑗 + 𝑁))) < 𝑥))
39		eluzelz 12832	. . . . . . . . . . . . . . 15 ⊢ (𝑚 ∈ (ℤ_≥‘(𝑗 + 𝑁)) → 𝑚 ∈ ℤ)
40	39	adantl 483	. . . . . . . . . . . . . 14 ⊢ (((𝜑 ∧ 𝑗 ∈ 𝑍) ∧ 𝑚 ∈ (ℤ_≥‘(𝑗 + 𝑁))) → 𝑚 ∈ ℤ)
41	40	zcnd 12667	. . . . . . . . . . . . 13 ⊢ (((𝜑 ∧ 𝑗 ∈ 𝑍) ∧ 𝑚 ∈ (ℤ_≥‘(𝑗 + 𝑁))) → 𝑚 ∈ ℂ)
42	19	zcnd 12667	. . . . . . . . . . . . . 14 ⊢ (𝜑 → 𝑁 ∈ ℂ)
43	42	ad2antrr 725	. . . . . . . . . . . . 13 ⊢ (((𝜑 ∧ 𝑗 ∈ 𝑍) ∧ 𝑚 ∈ (ℤ_≥‘(𝑗 + 𝑁))) → 𝑁 ∈ ℂ)
44	41, 43	npcand 11575	. . . . . . . . . . . 12 ⊢ (((𝜑 ∧ 𝑗 ∈ 𝑍) ∧ 𝑚 ∈ (ℤ_≥‘(𝑗 + 𝑁))) → ((𝑚 − 𝑁) + 𝑁) = 𝑚)
45	44	fveq2d 6896	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ 𝑗 ∈ 𝑍) ∧ 𝑚 ∈ (ℤ_≥‘(𝑗 + 𝑁))) → (𝐺‘((𝑚 − 𝑁) + 𝑁)) = (𝐺‘𝑚))
46	45	oveq1d 7424	. . . . . . . . . 10 ⊢ (((𝜑 ∧ 𝑗 ∈ 𝑍) ∧ 𝑚 ∈ (ℤ_≥‘(𝑗 + 𝑁))) → ((𝐺‘((𝑚 − 𝑁) + 𝑁))𝐷(𝐺‘(𝑗 + 𝑁))) = ((𝐺‘𝑚)𝐷(𝐺‘(𝑗 + 𝑁))))
47	3	ad2antrr 725	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ 𝑗 ∈ 𝑍) ∧ 𝑚 ∈ (ℤ_≥‘(𝑗 + 𝑁))) → 𝐷 ∈ (Met‘𝑋))
48		caushft.9	. . . . . . . . . . . . 13 ⊢ (𝜑 → 𝐺:𝑊⟶𝑋)
49	48	ad2antrr 725	. . . . . . . . . . . 12 ⊢ (((𝜑 ∧ 𝑗 ∈ 𝑍) ∧ 𝑚 ∈ (ℤ_≥‘(𝑗 + 𝑁))) → 𝐺:𝑊⟶𝑋)
50	22	uztrn2 12841	. . . . . . . . . . . . 13 ⊢ (((𝑗 + 𝑁) ∈ 𝑊 ∧ 𝑚 ∈ (ℤ_≥‘(𝑗 + 𝑁))) → 𝑚 ∈ 𝑊)
51	23, 50	sylan 581	. . . . . . . . . . . 12 ⊢ (((𝜑 ∧ 𝑗 ∈ 𝑍) ∧ 𝑚 ∈ (ℤ_≥‘(𝑗 + 𝑁))) → 𝑚 ∈ 𝑊)
52	49, 51	ffvelcdmd 7088	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ 𝑗 ∈ 𝑍) ∧ 𝑚 ∈ (ℤ_≥‘(𝑗 + 𝑁))) → (𝐺‘𝑚) ∈ 𝑋)
53	48	adantr 482	. . . . . . . . . . . . 13 ⊢ ((𝜑 ∧ 𝑗 ∈ 𝑍) → 𝐺:𝑊⟶𝑋)
54	53, 23	ffvelcdmd 7088	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑗 ∈ 𝑍) → (𝐺‘(𝑗 + 𝑁)) ∈ 𝑋)
55	54	adantr 482	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ 𝑗 ∈ 𝑍) ∧ 𝑚 ∈ (ℤ_≥‘(𝑗 + 𝑁))) → (𝐺‘(𝑗 + 𝑁)) ∈ 𝑋)
56		metsym 23856	. . . . . . . . . . 11 ⊢ ((𝐷 ∈ (Met‘𝑋) ∧ (𝐺‘𝑚) ∈ 𝑋 ∧ (𝐺‘(𝑗 + 𝑁)) ∈ 𝑋) → ((𝐺‘𝑚)𝐷(𝐺‘(𝑗 + 𝑁))) = ((𝐺‘(𝑗 + 𝑁))𝐷(𝐺‘𝑚)))
57	47, 52, 55, 56	syl3anc 1372	. . . . . . . . . 10 ⊢ (((𝜑 ∧ 𝑗 ∈ 𝑍) ∧ 𝑚 ∈ (ℤ_≥‘(𝑗 + 𝑁))) → ((𝐺‘𝑚)𝐷(𝐺‘(𝑗 + 𝑁))) = ((𝐺‘(𝑗 + 𝑁))𝐷(𝐺‘𝑚)))
58	46, 57	eqtrd 2773	. . . . . . . . 9 ⊢ (((𝜑 ∧ 𝑗 ∈ 𝑍) ∧ 𝑚 ∈ (ℤ_≥‘(𝑗 + 𝑁))) → ((𝐺‘((𝑚 − 𝑁) + 𝑁))𝐷(𝐺‘(𝑗 + 𝑁))) = ((𝐺‘(𝑗 + 𝑁))𝐷(𝐺‘𝑚)))
59	58	breq1d 5159	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑗 ∈ 𝑍) ∧ 𝑚 ∈ (ℤ_≥‘(𝑗 + 𝑁))) → (((𝐺‘((𝑚 − 𝑁) + 𝑁))𝐷(𝐺‘(𝑗 + 𝑁))) < 𝑥 ↔ ((𝐺‘(𝑗 + 𝑁))𝐷(𝐺‘𝑚)) < 𝑥))
60	38, 59	sylibd 238	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑗 ∈ 𝑍) ∧ 𝑚 ∈ (ℤ_≥‘(𝑗 + 𝑁))) → (∀𝑘 ∈ (ℤ_≥‘𝑗)(𝑘 ∈ dom 𝐹 ∧ (𝐺‘(𝑘 + 𝑁)) ∈ 𝑋 ∧ ((𝐺‘(𝑘 + 𝑁))𝐷(𝐺‘(𝑗 + 𝑁))) < 𝑥) → ((𝐺‘(𝑗 + 𝑁))𝐷(𝐺‘𝑚)) < 𝑥))
61	60	ralrimdva 3155	. . . . . 6 ⊢ ((𝜑 ∧ 𝑗 ∈ 𝑍) → (∀𝑘 ∈ (ℤ_≥‘𝑗)(𝑘 ∈ dom 𝐹 ∧ (𝐺‘(𝑘 + 𝑁)) ∈ 𝑋 ∧ ((𝐺‘(𝑘 + 𝑁))𝐷(𝐺‘(𝑗 + 𝑁))) < 𝑥) → ∀𝑚 ∈ (ℤ_≥‘(𝑗 + 𝑁))((𝐺‘(𝑗 + 𝑁))𝐷(𝐺‘𝑚)) < 𝑥))
62		fveq2 6892	. . . . . . . 8 ⊢ (𝑛 = (𝑗 + 𝑁) → (ℤ_≥‘𝑛) = (ℤ_≥‘(𝑗 + 𝑁)))
63		fveq2 6892	. . . . . . . . . 10 ⊢ (𝑛 = (𝑗 + 𝑁) → (𝐺‘𝑛) = (𝐺‘(𝑗 + 𝑁)))
64	63	oveq1d 7424	. . . . . . . . 9 ⊢ (𝑛 = (𝑗 + 𝑁) → ((𝐺‘𝑛)𝐷(𝐺‘𝑚)) = ((𝐺‘(𝑗 + 𝑁))𝐷(𝐺‘𝑚)))
65	64	breq1d 5159	. . . . . . . 8 ⊢ (𝑛 = (𝑗 + 𝑁) → (((𝐺‘𝑛)𝐷(𝐺‘𝑚)) < 𝑥 ↔ ((𝐺‘(𝑗 + 𝑁))𝐷(𝐺‘𝑚)) < 𝑥))
66	62, 65	raleqbidv 3343	. . . . . . 7 ⊢ (𝑛 = (𝑗 + 𝑁) → (∀𝑚 ∈ (ℤ_≥‘𝑛)((𝐺‘𝑛)𝐷(𝐺‘𝑚)) < 𝑥 ↔ ∀𝑚 ∈ (ℤ_≥‘(𝑗 + 𝑁))((𝐺‘(𝑗 + 𝑁))𝐷(𝐺‘𝑚)) < 𝑥))
67	66	rspcev 3613	. . . . . 6 ⊢ (((𝑗 + 𝑁) ∈ 𝑊 ∧ ∀𝑚 ∈ (ℤ_≥‘(𝑗 + 𝑁))((𝐺‘(𝑗 + 𝑁))𝐷(𝐺‘𝑚)) < 𝑥) → ∃𝑛 ∈ 𝑊 ∀𝑚 ∈ (ℤ_≥‘𝑛)((𝐺‘𝑛)𝐷(𝐺‘𝑚)) < 𝑥)
68	23, 61, 67	syl6an 683	. . . . 5 ⊢ ((𝜑 ∧ 𝑗 ∈ 𝑍) → (∀𝑘 ∈ (ℤ_≥‘𝑗)(𝑘 ∈ dom 𝐹 ∧ (𝐺‘(𝑘 + 𝑁)) ∈ 𝑋 ∧ ((𝐺‘(𝑘 + 𝑁))𝐷(𝐺‘(𝑗 + 𝑁))) < 𝑥) → ∃𝑛 ∈ 𝑊 ∀𝑚 ∈ (ℤ_≥‘𝑛)((𝐺‘𝑛)𝐷(𝐺‘𝑚)) < 𝑥))
69	68	rexlimdva 3156	. . . 4 ⊢ (𝜑 → (∃𝑗 ∈ 𝑍 ∀𝑘 ∈ (ℤ_≥‘𝑗)(𝑘 ∈ dom 𝐹 ∧ (𝐺‘(𝑘 + 𝑁)) ∈ 𝑋 ∧ ((𝐺‘(𝑘 + 𝑁))𝐷(𝐺‘(𝑗 + 𝑁))) < 𝑥) → ∃𝑛 ∈ 𝑊 ∀𝑚 ∈ (ℤ_≥‘𝑛)((𝐺‘𝑛)𝐷(𝐺‘𝑚)) < 𝑥))
70	69	ralimdv 3170	. . 3 ⊢ (𝜑 → (∀𝑥 ∈ ℝ⁺ ∃𝑗 ∈ 𝑍 ∀𝑘 ∈ (ℤ_≥‘𝑗)(𝑘 ∈ dom 𝐹 ∧ (𝐺‘(𝑘 + 𝑁)) ∈ 𝑋 ∧ ((𝐺‘(𝑘 + 𝑁))𝐷(𝐺‘(𝑗 + 𝑁))) < 𝑥) → ∀𝑥 ∈ ℝ⁺ ∃𝑛 ∈ 𝑊 ∀𝑚 ∈ (ℤ_≥‘𝑛)((𝐺‘𝑛)𝐷(𝐺‘𝑚)) < 𝑥))
71	16, 70	mpd 15	. 2 ⊢ (𝜑 → ∀𝑥 ∈ ℝ⁺ ∃𝑛 ∈ 𝑊 ∀𝑚 ∈ (ℤ_≥‘𝑛)((𝐺‘𝑛)𝐷(𝐺‘𝑚)) < 𝑥)
72	6, 19	zaddcld 12670	. . 3 ⊢ (𝜑 → (𝑀 + 𝑁) ∈ ℤ)
73		eqidd 2734	. . 3 ⊢ ((𝜑 ∧ 𝑚 ∈ 𝑊) → (𝐺‘𝑚) = (𝐺‘𝑚))
74		eqidd 2734	. . 3 ⊢ ((𝜑 ∧ 𝑛 ∈ 𝑊) → (𝐺‘𝑛) = (𝐺‘𝑛))
75	22, 5, 72, 73, 74, 48	iscauf 24797	. 2 ⊢ (𝜑 → (𝐺 ∈ (Cau‘𝐷) ↔ ∀𝑥 ∈ ℝ⁺ ∃𝑛 ∈ 𝑊 ∀𝑚 ∈ (ℤ_≥‘𝑛)((𝐺‘𝑛)𝐷(𝐺‘𝑚)) < 𝑥))
76	71, 75	mpbird 257	1 ⊢ (𝜑 → 𝐺 ∈ (Cau‘𝐷))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ∧ wa 397 ∧ w3a 1088 = wceq 1542 ∈ wcel 2107 ∀wral 3062 ∃wrex 3071 class class class wbr 5149 dom cdm 5677 ⟶wf 6540 ‘cfv 6544 (class class class)co 7409 ↑_pm cpm 8821 ℂcc 11108 + caddc 11113 < clt 11248 − cmin 11444 ℤcz 12558 ℤ_≥cuz 12822 ℝ⁺crp 12974 ∞Metcxmet 20929 Metcmet 20930 Cauccau 24770

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2109 ax-9 2117 ax-10 2138 ax-11 2155 ax-12 2172 ax-ext 2704 ax-sep 5300 ax-nul 5307 ax-pow 5364 ax-pr 5428 ax-un 7725 ax-cnex 11166 ax-resscn 11167 ax-1cn 11168 ax-icn 11169 ax-addcl 11170 ax-addrcl 11171 ax-mulcl 11172 ax-mulrcl 11173 ax-mulcom 11174 ax-addass 11175 ax-mulass 11176 ax-distr 11177 ax-i2m1 11178 ax-1ne0 11179 ax-1rid 11180 ax-rnegex 11181 ax-rrecex 11182 ax-cnre 11183 ax-pre-lttri 11184 ax-pre-lttrn 11185 ax-pre-ltadd 11186 ax-pre-mulgt0 11187

This theorem depends on definitions: df-bi 206 df-an 398 df-or 847 df-3or 1089 df-3an 1090 df-tru 1545 df-fal 1555 df-ex 1783 df-nf 1787 df-sb 2069 df-mo 2535 df-eu 2564 df-clab 2711 df-cleq 2725 df-clel 2811 df-nfc 2886 df-ne 2942 df-nel 3048 df-ral 3063 df-rex 3072 df-rmo 3377 df-reu 3378 df-rab 3434 df-v 3477 df-sbc 3779 df-csb 3895 df-dif 3952 df-un 3954 df-in 3956 df-ss 3966 df-pss 3968 df-nul 4324 df-if 4530 df-pw 4605 df-sn 4630 df-pr 4632 df-op 4636 df-uni 4910 df-iun 5000 df-br 5150 df-opab 5212 df-mpt 5233 df-tr 5267 df-id 5575 df-eprel 5581 df-po 5589 df-so 5590 df-fr 5632 df-we 5634 df-xp 5683 df-rel 5684 df-cnv 5685 df-co 5686 df-dm 5687 df-rn 5688 df-res 5689 df-ima 5690 df-pred 6301 df-ord 6368 df-on 6369 df-lim 6370 df-suc 6371 df-iota 6496 df-fun 6546 df-fn 6547 df-f 6548 df-f1 6549 df-fo 6550 df-f1o 6551 df-fv 6552 df-riota 7365 df-ov 7412 df-oprab 7413 df-mpo 7414 df-om 7856 df-1st 7975 df-2nd 7976 df-frecs 8266 df-wrecs 8297 df-recs 8371 df-rdg 8410 df-er 8703 df-map 8822 df-pm 8823 df-en 8940 df-dom 8941 df-sdom 8942 df-pnf 11250 df-mnf 11251 df-xr 11252 df-ltxr 11253 df-le 11254 df-sub 11446 df-neg 11447 df-div 11872 df-nn 12213 df-2 12275 df-n0 12473 df-z 12559 df-uz 12823 df-rp 12975 df-xneg 13092 df-xadd 13093 df-psmet 20936 df-xmet 20937 df-met 20938 df-bl 20939 df-cau 24773

This theorem is referenced by: (None)

W3C validator