stoweidlem7 - Mathbox for Glauco Siliprandi

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Theorem stoweidlem7 44713

Description: This lemma is used to prove that q_n as in the proof of Lemma 1 in [BrosowskiDeutsh] p. 91, (at the top of page 91), is such that q_n < ε on 𝑇 ∖ 𝑈, and q_n > 1 - ε on 𝑉. Here it is proven that, for 𝑛 large enough, 1-(k*δ/2)^n > 1 - ε , and 1/(k*δ)^n < ε. The variable 𝐴 is used to represent (k*δ) in the paper, and 𝐵 is used to represent (k*δ/2). (Contributed by Glauco Siliprandi, 20-Apr-2017.)

**Hypotheses**
Ref	Expression
stoweidlem7.1	⊢ 𝐹 = (𝑖 ∈ ℕ₀ ↦ ((1 / 𝐴)↑𝑖))
stoweidlem7.2	⊢ 𝐺 = (𝑖 ∈ ℕ₀ ↦ (𝐵↑𝑖))
stoweidlem7.3	⊢ (𝜑 → 𝐴 ∈ ℝ)
stoweidlem7.4	⊢ (𝜑 → 1 < 𝐴)
stoweidlem7.5	⊢ (𝜑 → 𝐵 ∈ ℝ⁺)
stoweidlem7.6	⊢ (𝜑 → 𝐵 < 1)
stoweidlem7.7	⊢ (𝜑 → 𝐸 ∈ ℝ⁺)

**Assertion**
Ref	Expression
stoweidlem7	⊢ (𝜑 → ∃𝑛 ∈ ℕ ((1 − 𝐸) < (1 − (𝐵↑𝑛)) ∧ (1 / (𝐴↑𝑛)) < 𝐸))

Distinct variable groups: 𝑖,𝑛,𝐴 𝐵,𝑖,𝑛 𝑖,𝐸,𝑛 𝜑,𝑖,𝑛 𝑛,𝐹 𝑛,𝐺 Allowed substitution hints: 𝐹(𝑖) 𝐺(𝑖)

Proof of Theorem stoweidlem7 Dummy variable 𝑘 is distinct from all other variables.

Step	Hyp	Ref	Expression
1		nnuz 12864	. . . . 5 ⊢ ℕ = (ℤ_≥‘1)
2		1zzd 12592	. . . . 5 ⊢ (𝜑 → 1 ∈ ℤ)
3		stoweidlem7.7	. . . . 5 ⊢ (𝜑 → 𝐸 ∈ ℝ⁺)
4		stoweidlem7.2	. . . . . 6 ⊢ 𝐺 = (𝑖 ∈ ℕ₀ ↦ (𝐵↑𝑖))
5		oveq2 7416	. . . . . 6 ⊢ (𝑖 = 𝑘 → (𝐵↑𝑖) = (𝐵↑𝑘))
6		nnnn0 12478	. . . . . . 7 ⊢ (𝑘 ∈ ℕ → 𝑘 ∈ ℕ₀)
7	6	adantl 482	. . . . . 6 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → 𝑘 ∈ ℕ₀)
8		stoweidlem7.5	. . . . . . . . 9 ⊢ (𝜑 → 𝐵 ∈ ℝ⁺)
9	8	rpcnd 13017	. . . . . . . 8 ⊢ (𝜑 → 𝐵 ∈ ℂ)
10	9	adantr 481	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → 𝐵 ∈ ℂ)
11	10, 7	expcld 14110	. . . . . 6 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (𝐵↑𝑘) ∈ ℂ)
12	4, 5, 7, 11	fvmptd3 7021	. . . . 5 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (𝐺‘𝑘) = (𝐵↑𝑘))
13		1red 11214	. . . . . . . . . 10 ⊢ (𝜑 → 1 ∈ ℝ)
14	13	renegcld 11640	. . . . . . . . 9 ⊢ (𝜑 → -1 ∈ ℝ)
15		0red 11216	. . . . . . . . 9 ⊢ (𝜑 → 0 ∈ ℝ)
16	8	rpred 13015	. . . . . . . . 9 ⊢ (𝜑 → 𝐵 ∈ ℝ)
17		neg1lt0 12328	. . . . . . . . . 10 ⊢ -1 < 0
18	17	a1i 11	. . . . . . . . 9 ⊢ (𝜑 → -1 < 0)
19	8	rpgt0d 13018	. . . . . . . . 9 ⊢ (𝜑 → 0 < 𝐵)
20	14, 15, 16, 18, 19	lttrd 11374	. . . . . . . 8 ⊢ (𝜑 → -1 < 𝐵)
21		stoweidlem7.6	. . . . . . . 8 ⊢ (𝜑 → 𝐵 < 1)
22	16, 13	absltd 15375	. . . . . . . 8 ⊢ (𝜑 → ((abs‘𝐵) < 1 ↔ (-1 < 𝐵 ∧ 𝐵 < 1)))
23	20, 21, 22	mpbir2and 711	. . . . . . 7 ⊢ (𝜑 → (abs‘𝐵) < 1)
24	9, 23	expcnv 15809	. . . . . 6 ⊢ (𝜑 → (𝑖 ∈ ℕ₀ ↦ (𝐵↑𝑖)) ⇝ 0)
25	4, 24	eqbrtrid 5183	. . . . 5 ⊢ (𝜑 → 𝐺 ⇝ 0)
26	1, 2, 3, 12, 25	climi 15453	. . . 4 ⊢ (𝜑 → ∃𝑛 ∈ ℕ ∀𝑘 ∈ (ℤ_≥‘𝑛)((𝐵↑𝑘) ∈ ℂ ∧ (abs‘((𝐵↑𝑘) − 0)) < 𝐸))
27		r19.26 3111	. . . . . . . . . . . . . 14 ⊢ (∀𝑘 ∈ (ℤ_≥‘𝑛)((𝐵↑𝑘) ∈ ℂ ∧ (abs‘((𝐵↑𝑘) − 0)) < 𝐸) ↔ (∀𝑘 ∈ (ℤ_≥‘𝑛)(𝐵↑𝑘) ∈ ℂ ∧ ∀𝑘 ∈ (ℤ_≥‘𝑛)(abs‘((𝐵↑𝑘) − 0)) < 𝐸))
28	27	simprbi 497	. . . . . . . . . . . . 13 ⊢ (∀𝑘 ∈ (ℤ_≥‘𝑛)((𝐵↑𝑘) ∈ ℂ ∧ (abs‘((𝐵↑𝑘) − 0)) < 𝐸) → ∀𝑘 ∈ (ℤ_≥‘𝑛)(abs‘((𝐵↑𝑘) − 0)) < 𝐸)
29	28	ad2antlr 725	. . . . . . . . . . . 12 ⊢ ((((𝜑 ∧ 𝑛 ∈ ℕ) ∧ ∀𝑘 ∈ (ℤ_≥‘𝑛)((𝐵↑𝑘) ∈ ℂ ∧ (abs‘((𝐵↑𝑘) − 0)) < 𝐸)) ∧ 𝑖 ∈ (ℤ_≥‘𝑛)) → ∀𝑘 ∈ (ℤ_≥‘𝑛)(abs‘((𝐵↑𝑘) − 0)) < 𝐸)
30		oveq2 7416	. . . . . . . . . . . . . . . 16 ⊢ (𝑘 = 𝑖 → (𝐵↑𝑘) = (𝐵↑𝑖))
31	30	oveq1d 7423	. . . . . . . . . . . . . . 15 ⊢ (𝑘 = 𝑖 → ((𝐵↑𝑘) − 0) = ((𝐵↑𝑖) − 0))
32	31	fveq2d 6895	. . . . . . . . . . . . . 14 ⊢ (𝑘 = 𝑖 → (abs‘((𝐵↑𝑘) − 0)) = (abs‘((𝐵↑𝑖) − 0)))
33	32	breq1d 5158	. . . . . . . . . . . . 13 ⊢ (𝑘 = 𝑖 → ((abs‘((𝐵↑𝑘) − 0)) < 𝐸 ↔ (abs‘((𝐵↑𝑖) − 0)) < 𝐸))
34	33	rspccva 3611	. . . . . . . . . . . 12 ⊢ ((∀𝑘 ∈ (ℤ_≥‘𝑛)(abs‘((𝐵↑𝑘) − 0)) < 𝐸 ∧ 𝑖 ∈ (ℤ_≥‘𝑛)) → (abs‘((𝐵↑𝑖) − 0)) < 𝐸)
35	29, 34	sylancom 588	. . . . . . . . . . 11 ⊢ ((((𝜑 ∧ 𝑛 ∈ ℕ) ∧ ∀𝑘 ∈ (ℤ_≥‘𝑛)((𝐵↑𝑘) ∈ ℂ ∧ (abs‘((𝐵↑𝑘) − 0)) < 𝐸)) ∧ 𝑖 ∈ (ℤ_≥‘𝑛)) → (abs‘((𝐵↑𝑖) − 0)) < 𝐸)
36		simplll 773	. . . . . . . . . . . . . . 15 ⊢ ((((𝜑 ∧ 𝑛 ∈ ℕ) ∧ ∀𝑘 ∈ (ℤ_≥‘𝑛)((𝐵↑𝑘) ∈ ℂ ∧ (abs‘((𝐵↑𝑘) − 0)) < 𝐸)) ∧ 𝑖 ∈ (ℤ_≥‘𝑛)) → 𝜑)
37	36, 8	syl 17	. . . . . . . . . . . . . 14 ⊢ ((((𝜑 ∧ 𝑛 ∈ ℕ) ∧ ∀𝑘 ∈ (ℤ_≥‘𝑛)((𝐵↑𝑘) ∈ ℂ ∧ (abs‘((𝐵↑𝑘) − 0)) < 𝐸)) ∧ 𝑖 ∈ (ℤ_≥‘𝑛)) → 𝐵 ∈ ℝ⁺)
38	37	rpred 13015	. . . . . . . . . . . . 13 ⊢ ((((𝜑 ∧ 𝑛 ∈ ℕ) ∧ ∀𝑘 ∈ (ℤ_≥‘𝑛)((𝐵↑𝑘) ∈ ℂ ∧ (abs‘((𝐵↑𝑘) − 0)) < 𝐸)) ∧ 𝑖 ∈ (ℤ_≥‘𝑛)) → 𝐵 ∈ ℝ)
39		simpllr 774	. . . . . . . . . . . . . . 15 ⊢ ((((𝜑 ∧ 𝑛 ∈ ℕ) ∧ ∀𝑘 ∈ (ℤ_≥‘𝑛)((𝐵↑𝑘) ∈ ℂ ∧ (abs‘((𝐵↑𝑘) − 0)) < 𝐸)) ∧ 𝑖 ∈ (ℤ_≥‘𝑛)) → 𝑛 ∈ ℕ)
40		nnnn0 12478	. . . . . . . . . . . . . . 15 ⊢ (𝑛 ∈ ℕ → 𝑛 ∈ ℕ₀)
41	39, 40	syl 17	. . . . . . . . . . . . . 14 ⊢ ((((𝜑 ∧ 𝑛 ∈ ℕ) ∧ ∀𝑘 ∈ (ℤ_≥‘𝑛)((𝐵↑𝑘) ∈ ℂ ∧ (abs‘((𝐵↑𝑘) − 0)) < 𝐸)) ∧ 𝑖 ∈ (ℤ_≥‘𝑛)) → 𝑛 ∈ ℕ₀)
42		eluznn0 12900	. . . . . . . . . . . . . 14 ⊢ ((𝑛 ∈ ℕ₀ ∧ 𝑖 ∈ (ℤ_≥‘𝑛)) → 𝑖 ∈ ℕ₀)
43	41, 42	sylancom 588	. . . . . . . . . . . . 13 ⊢ ((((𝜑 ∧ 𝑛 ∈ ℕ) ∧ ∀𝑘 ∈ (ℤ_≥‘𝑛)((𝐵↑𝑘) ∈ ℂ ∧ (abs‘((𝐵↑𝑘) − 0)) < 𝐸)) ∧ 𝑖 ∈ (ℤ_≥‘𝑛)) → 𝑖 ∈ ℕ₀)
44	38, 43	reexpcld 14127	. . . . . . . . . . . 12 ⊢ ((((𝜑 ∧ 𝑛 ∈ ℕ) ∧ ∀𝑘 ∈ (ℤ_≥‘𝑛)((𝐵↑𝑘) ∈ ℂ ∧ (abs‘((𝐵↑𝑘) − 0)) < 𝐸)) ∧ 𝑖 ∈ (ℤ_≥‘𝑛)) → (𝐵↑𝑖) ∈ ℝ)
45		rpre 12981	. . . . . . . . . . . . 13 ⊢ (𝐸 ∈ ℝ⁺ → 𝐸 ∈ ℝ)
46	36, 3, 45	3syl 18	. . . . . . . . . . . 12 ⊢ ((((𝜑 ∧ 𝑛 ∈ ℕ) ∧ ∀𝑘 ∈ (ℤ_≥‘𝑛)((𝐵↑𝑘) ∈ ℂ ∧ (abs‘((𝐵↑𝑘) − 0)) < 𝐸)) ∧ 𝑖 ∈ (ℤ_≥‘𝑛)) → 𝐸 ∈ ℝ)
47		recn 11199	. . . . . . . . . . . . . . . . 17 ⊢ ((𝐵↑𝑖) ∈ ℝ → (𝐵↑𝑖) ∈ ℂ)
48	47	subid1d 11559	. . . . . . . . . . . . . . . 16 ⊢ ((𝐵↑𝑖) ∈ ℝ → ((𝐵↑𝑖) − 0) = (𝐵↑𝑖))
49	48	adantr 481	. . . . . . . . . . . . . . 15 ⊢ (((𝐵↑𝑖) ∈ ℝ ∧ 𝐸 ∈ ℝ) → ((𝐵↑𝑖) − 0) = (𝐵↑𝑖))
50	49	fveq2d 6895	. . . . . . . . . . . . . 14 ⊢ (((𝐵↑𝑖) ∈ ℝ ∧ 𝐸 ∈ ℝ) → (abs‘((𝐵↑𝑖) − 0)) = (abs‘(𝐵↑𝑖)))
51	50	breq1d 5158	. . . . . . . . . . . . 13 ⊢ (((𝐵↑𝑖) ∈ ℝ ∧ 𝐸 ∈ ℝ) → ((abs‘((𝐵↑𝑖) − 0)) < 𝐸 ↔ (abs‘(𝐵↑𝑖)) < 𝐸))
52		abslt 15260	. . . . . . . . . . . . 13 ⊢ (((𝐵↑𝑖) ∈ ℝ ∧ 𝐸 ∈ ℝ) → ((abs‘(𝐵↑𝑖)) < 𝐸 ↔ (-𝐸 < (𝐵↑𝑖) ∧ (𝐵↑𝑖) < 𝐸)))
53	51, 52	bitrd 278	. . . . . . . . . . . 12 ⊢ (((𝐵↑𝑖) ∈ ℝ ∧ 𝐸 ∈ ℝ) → ((abs‘((𝐵↑𝑖) − 0)) < 𝐸 ↔ (-𝐸 < (𝐵↑𝑖) ∧ (𝐵↑𝑖) < 𝐸)))
54	44, 46, 53	syl2anc 584	. . . . . . . . . . 11 ⊢ ((((𝜑 ∧ 𝑛 ∈ ℕ) ∧ ∀𝑘 ∈ (ℤ_≥‘𝑛)((𝐵↑𝑘) ∈ ℂ ∧ (abs‘((𝐵↑𝑘) − 0)) < 𝐸)) ∧ 𝑖 ∈ (ℤ_≥‘𝑛)) → ((abs‘((𝐵↑𝑖) − 0)) < 𝐸 ↔ (-𝐸 < (𝐵↑𝑖) ∧ (𝐵↑𝑖) < 𝐸)))
55	35, 54	mpbid 231	. . . . . . . . . 10 ⊢ ((((𝜑 ∧ 𝑛 ∈ ℕ) ∧ ∀𝑘 ∈ (ℤ_≥‘𝑛)((𝐵↑𝑘) ∈ ℂ ∧ (abs‘((𝐵↑𝑘) − 0)) < 𝐸)) ∧ 𝑖 ∈ (ℤ_≥‘𝑛)) → (-𝐸 < (𝐵↑𝑖) ∧ (𝐵↑𝑖) < 𝐸))
56	55	simprd 496	. . . . . . . . 9 ⊢ ((((𝜑 ∧ 𝑛 ∈ ℕ) ∧ ∀𝑘 ∈ (ℤ_≥‘𝑛)((𝐵↑𝑘) ∈ ℂ ∧ (abs‘((𝐵↑𝑘) − 0)) < 𝐸)) ∧ 𝑖 ∈ (ℤ_≥‘𝑛)) → (𝐵↑𝑖) < 𝐸)
57		eluznn 12901	. . . . . . . . . . 11 ⊢ ((𝑛 ∈ ℕ ∧ 𝑖 ∈ (ℤ_≥‘𝑛)) → 𝑖 ∈ ℕ)
58	39, 57	sylancom 588	. . . . . . . . . 10 ⊢ ((((𝜑 ∧ 𝑛 ∈ ℕ) ∧ ∀𝑘 ∈ (ℤ_≥‘𝑛)((𝐵↑𝑘) ∈ ℂ ∧ (abs‘((𝐵↑𝑘) − 0)) < 𝐸)) ∧ 𝑖 ∈ (ℤ_≥‘𝑛)) → 𝑖 ∈ ℕ)
59	16	adantr 481	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑖 ∈ ℕ) → 𝐵 ∈ ℝ)
60		nnnn0 12478	. . . . . . . . . . . . 13 ⊢ (𝑖 ∈ ℕ → 𝑖 ∈ ℕ₀)
61	60	adantl 482	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑖 ∈ ℕ) → 𝑖 ∈ ℕ₀)
62	59, 61	reexpcld 14127	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑖 ∈ ℕ) → (𝐵↑𝑖) ∈ ℝ)
63	3	rpred 13015	. . . . . . . . . . . 12 ⊢ (𝜑 → 𝐸 ∈ ℝ)
64	63	adantr 481	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑖 ∈ ℕ) → 𝐸 ∈ ℝ)
65		1red 11214	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑖 ∈ ℕ) → 1 ∈ ℝ)
66	62, 64, 65	ltsub2d 11823	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑖 ∈ ℕ) → ((𝐵↑𝑖) < 𝐸 ↔ (1 − 𝐸) < (1 − (𝐵↑𝑖))))
67	36, 58, 66	syl2anc 584	. . . . . . . . 9 ⊢ ((((𝜑 ∧ 𝑛 ∈ ℕ) ∧ ∀𝑘 ∈ (ℤ_≥‘𝑛)((𝐵↑𝑘) ∈ ℂ ∧ (abs‘((𝐵↑𝑘) − 0)) < 𝐸)) ∧ 𝑖 ∈ (ℤ_≥‘𝑛)) → ((𝐵↑𝑖) < 𝐸 ↔ (1 − 𝐸) < (1 − (𝐵↑𝑖))))
68	56, 67	mpbid 231	. . . . . . . 8 ⊢ ((((𝜑 ∧ 𝑛 ∈ ℕ) ∧ ∀𝑘 ∈ (ℤ_≥‘𝑛)((𝐵↑𝑘) ∈ ℂ ∧ (abs‘((𝐵↑𝑘) − 0)) < 𝐸)) ∧ 𝑖 ∈ (ℤ_≥‘𝑛)) → (1 − 𝐸) < (1 − (𝐵↑𝑖)))
69	68	ralrimiva 3146	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ ∀𝑘 ∈ (ℤ_≥‘𝑛)((𝐵↑𝑘) ∈ ℂ ∧ (abs‘((𝐵↑𝑘) − 0)) < 𝐸)) → ∀𝑖 ∈ (ℤ_≥‘𝑛)(1 − 𝐸) < (1 − (𝐵↑𝑖)))
70	30	oveq2d 7424	. . . . . . . . 9 ⊢ (𝑘 = 𝑖 → (1 − (𝐵↑𝑘)) = (1 − (𝐵↑𝑖)))
71	70	breq2d 5160	. . . . . . . 8 ⊢ (𝑘 = 𝑖 → ((1 − 𝐸) < (1 − (𝐵↑𝑘)) ↔ (1 − 𝐸) < (1 − (𝐵↑𝑖))))
72	71	cbvralvw 3234	. . . . . . 7 ⊢ (∀𝑘 ∈ (ℤ_≥‘𝑛)(1 − 𝐸) < (1 − (𝐵↑𝑘)) ↔ ∀𝑖 ∈ (ℤ_≥‘𝑛)(1 − 𝐸) < (1 − (𝐵↑𝑖)))
73	69, 72	sylibr 233	. . . . . 6 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ ∀𝑘 ∈ (ℤ_≥‘𝑛)((𝐵↑𝑘) ∈ ℂ ∧ (abs‘((𝐵↑𝑘) − 0)) < 𝐸)) → ∀𝑘 ∈ (ℤ_≥‘𝑛)(1 − 𝐸) < (1 − (𝐵↑𝑘)))
74	73	ex 413	. . . . 5 ⊢ ((𝜑 ∧ 𝑛 ∈ ℕ) → (∀𝑘 ∈ (ℤ_≥‘𝑛)((𝐵↑𝑘) ∈ ℂ ∧ (abs‘((𝐵↑𝑘) − 0)) < 𝐸) → ∀𝑘 ∈ (ℤ_≥‘𝑛)(1 − 𝐸) < (1 − (𝐵↑𝑘))))
75	74	reximdva 3168	. . . 4 ⊢ (𝜑 → (∃𝑛 ∈ ℕ ∀𝑘 ∈ (ℤ_≥‘𝑛)((𝐵↑𝑘) ∈ ℂ ∧ (abs‘((𝐵↑𝑘) − 0)) < 𝐸) → ∃𝑛 ∈ ℕ ∀𝑘 ∈ (ℤ_≥‘𝑛)(1 − 𝐸) < (1 − (𝐵↑𝑘))))
76	26, 75	mpd 15	. . 3 ⊢ (𝜑 → ∃𝑛 ∈ ℕ ∀𝑘 ∈ (ℤ_≥‘𝑛)(1 − 𝐸) < (1 − (𝐵↑𝑘)))
77		stoweidlem7.1	. . . . . 6 ⊢ 𝐹 = (𝑖 ∈ ℕ₀ ↦ ((1 / 𝐴)↑𝑖))
78		oveq2 7416	. . . . . 6 ⊢ (𝑖 = 𝑘 → ((1 / 𝐴)↑𝑖) = ((1 / 𝐴)↑𝑘))
79		stoweidlem7.3	. . . . . . . . . 10 ⊢ (𝜑 → 𝐴 ∈ ℝ)
80	79	recnd 11241	. . . . . . . . 9 ⊢ (𝜑 → 𝐴 ∈ ℂ)
81		0lt1 11735	. . . . . . . . . . . 12 ⊢ 0 < 1
82	81	a1i 11	. . . . . . . . . . 11 ⊢ (𝜑 → 0 < 1)
83		stoweidlem7.4	. . . . . . . . . . 11 ⊢ (𝜑 → 1 < 𝐴)
84	15, 13, 79, 82, 83	lttrd 11374	. . . . . . . . . 10 ⊢ (𝜑 → 0 < 𝐴)
85	84	gt0ne0d 11777	. . . . . . . . 9 ⊢ (𝜑 → 𝐴 ≠ 0)
86	80, 85	reccld 11982	. . . . . . . 8 ⊢ (𝜑 → (1 / 𝐴) ∈ ℂ)
87	86	adantr 481	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (1 / 𝐴) ∈ ℂ)
88	87, 7	expcld 14110	. . . . . 6 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → ((1 / 𝐴)↑𝑘) ∈ ℂ)
89	77, 78, 7, 88	fvmptd3 7021	. . . . 5 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (𝐹‘𝑘) = ((1 / 𝐴)↑𝑘))
90	79, 85	rereccld 12040	. . . . . . . . 9 ⊢ (𝜑 → (1 / 𝐴) ∈ ℝ)
91	79, 84	recgt0d 12147	. . . . . . . . 9 ⊢ (𝜑 → 0 < (1 / 𝐴))
92	14, 15, 90, 18, 91	lttrd 11374	. . . . . . . 8 ⊢ (𝜑 → -1 < (1 / 𝐴))
93		ltdiv23 12104	. . . . . . . . . . 11 ⊢ ((1 ∈ ℝ ∧ (𝐴 ∈ ℝ ∧ 0 < 𝐴) ∧ (1 ∈ ℝ ∧ 0 < 1)) → ((1 / 𝐴) < 1 ↔ (1 / 1) < 𝐴))
94	13, 79, 84, 13, 82, 93	syl122anc 1379	. . . . . . . . . 10 ⊢ (𝜑 → ((1 / 𝐴) < 1 ↔ (1 / 1) < 𝐴))
95		1cnd 11208	. . . . . . . . . . . 12 ⊢ (𝜑 → 1 ∈ ℂ)
96	95	div1d 11981	. . . . . . . . . . 11 ⊢ (𝜑 → (1 / 1) = 1)
97	96	breq1d 5158	. . . . . . . . . 10 ⊢ (𝜑 → ((1 / 1) < 𝐴 ↔ 1 < 𝐴))
98	94, 97	bitrd 278	. . . . . . . . 9 ⊢ (𝜑 → ((1 / 𝐴) < 1 ↔ 1 < 𝐴))
99	83, 98	mpbird 256	. . . . . . . 8 ⊢ (𝜑 → (1 / 𝐴) < 1)
100	90, 13	absltd 15375	. . . . . . . 8 ⊢ (𝜑 → ((abs‘(1 / 𝐴)) < 1 ↔ (-1 < (1 / 𝐴) ∧ (1 / 𝐴) < 1)))
101	92, 99, 100	mpbir2and 711	. . . . . . 7 ⊢ (𝜑 → (abs‘(1 / 𝐴)) < 1)
102	86, 101	expcnv 15809	. . . . . 6 ⊢ (𝜑 → (𝑖 ∈ ℕ₀ ↦ ((1 / 𝐴)↑𝑖)) ⇝ 0)
103	77, 102	eqbrtrid 5183	. . . . 5 ⊢ (𝜑 → 𝐹 ⇝ 0)
104	1, 2, 3, 89, 103	climi2 15454	. . . 4 ⊢ (𝜑 → ∃𝑛 ∈ ℕ ∀𝑘 ∈ (ℤ_≥‘𝑛)(abs‘(((1 / 𝐴)↑𝑘) − 0)) < 𝐸)
105		simpll 765	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ 𝑘 ∈ (ℤ_≥‘𝑛)) → 𝜑)
106		uznnssnn 12878	. . . . . . . . 9 ⊢ (𝑛 ∈ ℕ → (ℤ_≥‘𝑛) ⊆ ℕ)
107	106	ad2antlr 725	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ 𝑘 ∈ (ℤ_≥‘𝑛)) → (ℤ_≥‘𝑛) ⊆ ℕ)
108		simpr 485	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ 𝑘 ∈ (ℤ_≥‘𝑛)) → 𝑘 ∈ (ℤ_≥‘𝑛))
109	107, 108	sseldd 3983	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ 𝑘 ∈ (ℤ_≥‘𝑛)) → 𝑘 ∈ ℕ)
110	88	subid1d 11559	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (((1 / 𝐴)↑𝑘) − 0) = ((1 / 𝐴)↑𝑘))
111	110	fveq2d 6895	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (abs‘(((1 / 𝐴)↑𝑘) − 0)) = (abs‘((1 / 𝐴)↑𝑘)))
112	90	adantr 481	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (1 / 𝐴) ∈ ℝ)
113	112, 7	reexpcld 14127	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → ((1 / 𝐴)↑𝑘) ∈ ℝ)
114	15, 90, 91	ltled 11361	. . . . . . . . . . . . 13 ⊢ (𝜑 → 0 ≤ (1 / 𝐴))
115	114	adantr 481	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → 0 ≤ (1 / 𝐴))
116	112, 7, 115	expge0d 14128	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → 0 ≤ ((1 / 𝐴)↑𝑘))
117	113, 116	absidd 15368	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (abs‘((1 / 𝐴)↑𝑘)) = ((1 / 𝐴)↑𝑘))
118	111, 117	eqtrd 2772	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (abs‘(((1 / 𝐴)↑𝑘) − 0)) = ((1 / 𝐴)↑𝑘))
119	118	breq1d 5158	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → ((abs‘(((1 / 𝐴)↑𝑘) − 0)) < 𝐸 ↔ ((1 / 𝐴)↑𝑘) < 𝐸))
120	119	biimpd 228	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → ((abs‘(((1 / 𝐴)↑𝑘) − 0)) < 𝐸 → ((1 / 𝐴)↑𝑘) < 𝐸))
121	105, 109, 120	syl2anc 584	. . . . . 6 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ 𝑘 ∈ (ℤ_≥‘𝑛)) → ((abs‘(((1 / 𝐴)↑𝑘) − 0)) < 𝐸 → ((1 / 𝐴)↑𝑘) < 𝐸))
122	121	ralimdva 3167	. . . . 5 ⊢ ((𝜑 ∧ 𝑛 ∈ ℕ) → (∀𝑘 ∈ (ℤ_≥‘𝑛)(abs‘(((1 / 𝐴)↑𝑘) − 0)) < 𝐸 → ∀𝑘 ∈ (ℤ_≥‘𝑛)((1 / 𝐴)↑𝑘) < 𝐸))
123	122	reximdva 3168	. . . 4 ⊢ (𝜑 → (∃𝑛 ∈ ℕ ∀𝑘 ∈ (ℤ_≥‘𝑛)(abs‘(((1 / 𝐴)↑𝑘) − 0)) < 𝐸 → ∃𝑛 ∈ ℕ ∀𝑘 ∈ (ℤ_≥‘𝑛)((1 / 𝐴)↑𝑘) < 𝐸))
124	104, 123	mpd 15	. . 3 ⊢ (𝜑 → ∃𝑛 ∈ ℕ ∀𝑘 ∈ (ℤ_≥‘𝑛)((1 / 𝐴)↑𝑘) < 𝐸)
125	1	rexanuz2 15295	. . 3 ⊢ (∃𝑛 ∈ ℕ ∀𝑘 ∈ (ℤ_≥‘𝑛)((1 − 𝐸) < (1 − (𝐵↑𝑘)) ∧ ((1 / 𝐴)↑𝑘) < 𝐸) ↔ (∃𝑛 ∈ ℕ ∀𝑘 ∈ (ℤ_≥‘𝑛)(1 − 𝐸) < (1 − (𝐵↑𝑘)) ∧ ∃𝑛 ∈ ℕ ∀𝑘 ∈ (ℤ_≥‘𝑛)((1 / 𝐴)↑𝑘) < 𝐸))
126	76, 124, 125	sylanbrc 583	. 2 ⊢ (𝜑 → ∃𝑛 ∈ ℕ ∀𝑘 ∈ (ℤ_≥‘𝑛)((1 − 𝐸) < (1 − (𝐵↑𝑘)) ∧ ((1 / 𝐴)↑𝑘) < 𝐸))
127		simpr 485	. . . . . 6 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ ∀𝑘 ∈ (ℤ_≥‘𝑛)((1 − 𝐸) < (1 − (𝐵↑𝑘)) ∧ ((1 / 𝐴)↑𝑘) < 𝐸)) → ∀𝑘 ∈ (ℤ_≥‘𝑛)((1 − 𝐸) < (1 − (𝐵↑𝑘)) ∧ ((1 / 𝐴)↑𝑘) < 𝐸))
128		nnz 12578	. . . . . . . 8 ⊢ (𝑛 ∈ ℕ → 𝑛 ∈ ℤ)
129		uzid 12836	. . . . . . . 8 ⊢ (𝑛 ∈ ℤ → 𝑛 ∈ (ℤ_≥‘𝑛))
130	128, 129	syl 17	. . . . . . 7 ⊢ (𝑛 ∈ ℕ → 𝑛 ∈ (ℤ_≥‘𝑛))
131	130	ad2antlr 725	. . . . . 6 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ ∀𝑘 ∈ (ℤ_≥‘𝑛)((1 − 𝐸) < (1 − (𝐵↑𝑘)) ∧ ((1 / 𝐴)↑𝑘) < 𝐸)) → 𝑛 ∈ (ℤ_≥‘𝑛))
132		oveq2 7416	. . . . . . . . . 10 ⊢ (𝑘 = 𝑛 → (𝐵↑𝑘) = (𝐵↑𝑛))
133	132	oveq2d 7424	. . . . . . . . 9 ⊢ (𝑘 = 𝑛 → (1 − (𝐵↑𝑘)) = (1 − (𝐵↑𝑛)))
134	133	breq2d 5160	. . . . . . . 8 ⊢ (𝑘 = 𝑛 → ((1 − 𝐸) < (1 − (𝐵↑𝑘)) ↔ (1 − 𝐸) < (1 − (𝐵↑𝑛))))
135		oveq2 7416	. . . . . . . . 9 ⊢ (𝑘 = 𝑛 → ((1 / 𝐴)↑𝑘) = ((1 / 𝐴)↑𝑛))
136	135	breq1d 5158	. . . . . . . 8 ⊢ (𝑘 = 𝑛 → (((1 / 𝐴)↑𝑘) < 𝐸 ↔ ((1 / 𝐴)↑𝑛) < 𝐸))
137	134, 136	anbi12d 631	. . . . . . 7 ⊢ (𝑘 = 𝑛 → (((1 − 𝐸) < (1 − (𝐵↑𝑘)) ∧ ((1 / 𝐴)↑𝑘) < 𝐸) ↔ ((1 − 𝐸) < (1 − (𝐵↑𝑛)) ∧ ((1 / 𝐴)↑𝑛) < 𝐸)))
138	137	rspccva 3611	. . . . . 6 ⊢ ((∀𝑘 ∈ (ℤ_≥‘𝑛)((1 − 𝐸) < (1 − (𝐵↑𝑘)) ∧ ((1 / 𝐴)↑𝑘) < 𝐸) ∧ 𝑛 ∈ (ℤ_≥‘𝑛)) → ((1 − 𝐸) < (1 − (𝐵↑𝑛)) ∧ ((1 / 𝐴)↑𝑛) < 𝐸))
139	127, 131, 138	syl2anc 584	. . . . 5 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ ∀𝑘 ∈ (ℤ_≥‘𝑛)((1 − 𝐸) < (1 − (𝐵↑𝑘)) ∧ ((1 / 𝐴)↑𝑘) < 𝐸)) → ((1 − 𝐸) < (1 − (𝐵↑𝑛)) ∧ ((1 / 𝐴)↑𝑛) < 𝐸))
140		1cnd 11208	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑛 ∈ ℕ) → 1 ∈ ℂ)
141	80, 85	jca 512	. . . . . . . . . . 11 ⊢ (𝜑 → (𝐴 ∈ ℂ ∧ 𝐴 ≠ 0))
142	141	adantr 481	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑛 ∈ ℕ) → (𝐴 ∈ ℂ ∧ 𝐴 ≠ 0))
143	40	adantl 482	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑛 ∈ ℕ) → 𝑛 ∈ ℕ₀)
144		expdiv 14078	. . . . . . . . . 10 ⊢ ((1 ∈ ℂ ∧ (𝐴 ∈ ℂ ∧ 𝐴 ≠ 0) ∧ 𝑛 ∈ ℕ₀) → ((1 / 𝐴)↑𝑛) = ((1↑𝑛) / (𝐴↑𝑛)))
145	140, 142, 143, 144	syl3anc 1371	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑛 ∈ ℕ) → ((1 / 𝐴)↑𝑛) = ((1↑𝑛) / (𝐴↑𝑛)))
146	128	adantl 482	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑛 ∈ ℕ) → 𝑛 ∈ ℤ)
147		1exp 14056	. . . . . . . . . . 11 ⊢ (𝑛 ∈ ℤ → (1↑𝑛) = 1)
148	146, 147	syl 17	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑛 ∈ ℕ) → (1↑𝑛) = 1)
149	148	oveq1d 7423	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑛 ∈ ℕ) → ((1↑𝑛) / (𝐴↑𝑛)) = (1 / (𝐴↑𝑛)))
150	145, 149	eqtrd 2772	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑛 ∈ ℕ) → ((1 / 𝐴)↑𝑛) = (1 / (𝐴↑𝑛)))
151	150	breq1d 5158	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑛 ∈ ℕ) → (((1 / 𝐴)↑𝑛) < 𝐸 ↔ (1 / (𝐴↑𝑛)) < 𝐸))
152	151	adantr 481	. . . . . 6 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ ∀𝑘 ∈ (ℤ_≥‘𝑛)((1 − 𝐸) < (1 − (𝐵↑𝑘)) ∧ ((1 / 𝐴)↑𝑘) < 𝐸)) → (((1 / 𝐴)↑𝑛) < 𝐸 ↔ (1 / (𝐴↑𝑛)) < 𝐸))
153	152	anbi2d 629	. . . . 5 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ ∀𝑘 ∈ (ℤ_≥‘𝑛)((1 − 𝐸) < (1 − (𝐵↑𝑘)) ∧ ((1 / 𝐴)↑𝑘) < 𝐸)) → (((1 − 𝐸) < (1 − (𝐵↑𝑛)) ∧ ((1 / 𝐴)↑𝑛) < 𝐸) ↔ ((1 − 𝐸) < (1 − (𝐵↑𝑛)) ∧ (1 / (𝐴↑𝑛)) < 𝐸)))
154	139, 153	mpbid 231	. . . 4 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ ∀𝑘 ∈ (ℤ_≥‘𝑛)((1 − 𝐸) < (1 − (𝐵↑𝑘)) ∧ ((1 / 𝐴)↑𝑘) < 𝐸)) → ((1 − 𝐸) < (1 − (𝐵↑𝑛)) ∧ (1 / (𝐴↑𝑛)) < 𝐸))
155	154	ex 413	. . 3 ⊢ ((𝜑 ∧ 𝑛 ∈ ℕ) → (∀𝑘 ∈ (ℤ_≥‘𝑛)((1 − 𝐸) < (1 − (𝐵↑𝑘)) ∧ ((1 / 𝐴)↑𝑘) < 𝐸) → ((1 − 𝐸) < (1 − (𝐵↑𝑛)) ∧ (1 / (𝐴↑𝑛)) < 𝐸)))
156	155	reximdva 3168	. 2 ⊢ (𝜑 → (∃𝑛 ∈ ℕ ∀𝑘 ∈ (ℤ_≥‘𝑛)((1 − 𝐸) < (1 − (𝐵↑𝑘)) ∧ ((1 / 𝐴)↑𝑘) < 𝐸) → ∃𝑛 ∈ ℕ ((1 − 𝐸) < (1 − (𝐵↑𝑛)) ∧ (1 / (𝐴↑𝑛)) < 𝐸)))
157	126, 156	mpd 15	1 ⊢ (𝜑 → ∃𝑛 ∈ ℕ ((1 − 𝐸) < (1 − (𝐵↑𝑛)) ∧ (1 / (𝐴↑𝑛)) < 𝐸))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ↔ wb 205 ∧ wa 396 = wceq 1541 ∈ wcel 2106 ≠ wne 2940 ∀wral 3061 ∃wrex 3070 ⊆ wss 3948 class class class wbr 5148 ↦ cmpt 5231 ‘cfv 6543 (class class class)co 7408 ℂcc 11107 ℝcr 11108 0cc0 11109 1c1 11110 < clt 11247 ≤ cle 11248 − cmin 11443 -cneg 11444 / cdiv 11870 ℕcn 12211 ℕ₀cn0 12471 ℤcz 12557 ℤ_≥cuz 12821 ℝ⁺crp 12973 ↑cexp 14026 abscabs 15180 ⇝ cli 15427

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 7724 ax-cnex 11165 ax-resscn 11166 ax-1cn 11167 ax-icn 11168 ax-addcl 11169 ax-addrcl 11170 ax-mulcl 11171 ax-mulrcl 11172 ax-mulcom 11173 ax-addass 11174 ax-mulass 11175 ax-distr 11176 ax-i2m1 11177 ax-1ne0 11178 ax-1rid 11179 ax-rnegex 11180 ax-rrecex 11181 ax-cnre 11182 ax-pre-lttri 11183 ax-pre-lttrn 11184 ax-pre-ltadd 11185 ax-pre-mulgt0 11186 ax-pre-sup 11187

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-nul 4323 df-if 4529 df-pw 4604 df-sn 4629 df-pr 4631 df-op 4635 df-uni 4909 df-iun 4999 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-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-riota 7364 df-ov 7411 df-oprab 7412 df-mpo 7413 df-om 7855 df-2nd 7975 df-frecs 8265 df-wrecs 8296 df-recs 8370 df-rdg 8409 df-er 8702 df-pm 8822 df-en 8939 df-dom 8940 df-sdom 8941 df-sup 9436 df-inf 9437 df-pnf 11249 df-mnf 11250 df-xr 11251 df-ltxr 11252 df-le 11253 df-sub 11445 df-neg 11446 df-div 11871 df-nn 12212 df-2 12274 df-3 12275 df-n0 12472 df-z 12558 df-uz 12822 df-rp 12974 df-fl 13756 df-seq 13966 df-exp 14027 df-cj 15045 df-re 15046 df-im 15047 df-sqrt 15181 df-abs 15182 df-clim 15431 df-rlim 15432

This theorem is referenced by: stoweidlem49 44755

W3C validator