cvgratnnlemabsle - Intuitionistic Logic Explorer

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Theorem cvgratnnlemabsle 11534

Description: Lemma for cvgratnn 11538. (Contributed by Jim Kingdon, 21-Nov-2022.)

**Hypotheses**
Ref	Expression
cvgratnn.3	⊢ (𝜑 → 𝐴 ∈ ℝ)
cvgratnn.4	⊢ (𝜑 → 𝐴 < 1)
cvgratnn.gt0	⊢ (𝜑 → 0 < 𝐴)
cvgratnn.6	⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (𝐹‘𝑘) ∈ ℂ)
cvgratnn.7	⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (abs‘(𝐹‘(𝑘 + 1))) ≤ (𝐴 · (abs‘(𝐹‘𝑘))))
cvgratnn.m	⊢ (𝜑 → 𝑀 ∈ ℕ)
cvgratnn.n	⊢ (𝜑 → 𝑁 ∈ (ℤ_≥‘𝑀))

**Assertion**
Ref	Expression
cvgratnnlemabsle	⊢ (𝜑 → (abs‘Σ𝑖 ∈ ((𝑀 + 1)...𝑁)(𝐹‘𝑖)) ≤ ((abs‘(𝐹‘𝑀)) · Σ𝑖 ∈ ((𝑀 + 1)...𝑁)(𝐴↑(𝑖 − 𝑀))))

Distinct variable groups: 𝐴,𝑘 𝑘,𝐹 𝑘,𝑁 𝜑,𝑘 𝑖,𝐹,𝑘 𝑖,𝑀,𝑘 𝑖,𝑁 𝜑,𝑖 Allowed substitution hint: 𝐴(𝑖)

**Proof of Theorem cvgratnnlemabsle**
Step	Hyp	Ref	Expression
1		cvgratnn.m	. . . . . . . 8 ⊢ (𝜑 → 𝑀 ∈ ℕ)
2	1	nnzd 9373	. . . . . . 7 ⊢ (𝜑 → 𝑀 ∈ ℤ)
3	2	peano2zd 9377	. . . . . 6 ⊢ (𝜑 → (𝑀 + 1) ∈ ℤ)
4		cvgratnn.n	. . . . . . 7 ⊢ (𝜑 → 𝑁 ∈ (ℤ_≥‘𝑀))
5		eluzelz 9536	. . . . . . 7 ⊢ (𝑁 ∈ (ℤ_≥‘𝑀) → 𝑁 ∈ ℤ)
6	4, 5	syl 14	. . . . . 6 ⊢ (𝜑 → 𝑁 ∈ ℤ)
7	3, 6	fzfigd 10430	. . . . 5 ⊢ (𝜑 → ((𝑀 + 1)...𝑁) ∈ Fin)
8		fveq2 5515	. . . . . . 7 ⊢ (𝑘 = 𝑖 → (𝐹‘𝑘) = (𝐹‘𝑖))
9	8	eleq1d 2246	. . . . . 6 ⊢ (𝑘 = 𝑖 → ((𝐹‘𝑘) ∈ ℂ ↔ (𝐹‘𝑖) ∈ ℂ))
10		cvgratnn.6	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (𝐹‘𝑘) ∈ ℂ)
11	10	ralrimiva 2550	. . . . . . 7 ⊢ (𝜑 → ∀𝑘 ∈ ℕ (𝐹‘𝑘) ∈ ℂ)
12	11	adantr 276	. . . . . 6 ⊢ ((𝜑 ∧ 𝑖 ∈ ((𝑀 + 1)...𝑁)) → ∀𝑘 ∈ ℕ (𝐹‘𝑘) ∈ ℂ)
13		elfzelz 10024	. . . . . . . 8 ⊢ (𝑖 ∈ ((𝑀 + 1)...𝑁) → 𝑖 ∈ ℤ)
14	13	adantl 277	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑖 ∈ ((𝑀 + 1)...𝑁)) → 𝑖 ∈ ℤ)
15		0red 7957	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑖 ∈ ((𝑀 + 1)...𝑁)) → 0 ∈ ℝ)
16	1	peano2nnd 8933	. . . . . . . . . 10 ⊢ (𝜑 → (𝑀 + 1) ∈ ℕ)
17	16	adantr 276	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑖 ∈ ((𝑀 + 1)...𝑁)) → (𝑀 + 1) ∈ ℕ)
18	17	nnred 8931	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑖 ∈ ((𝑀 + 1)...𝑁)) → (𝑀 + 1) ∈ ℝ)
19	14	zred 9374	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑖 ∈ ((𝑀 + 1)...𝑁)) → 𝑖 ∈ ℝ)
20	16	nngt0d 8962	. . . . . . . . 9 ⊢ (𝜑 → 0 < (𝑀 + 1))
21	20	adantr 276	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑖 ∈ ((𝑀 + 1)...𝑁)) → 0 < (𝑀 + 1))
22		elfzle1 10026	. . . . . . . . 9 ⊢ (𝑖 ∈ ((𝑀 + 1)...𝑁) → (𝑀 + 1) ≤ 𝑖)
23	22	adantl 277	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑖 ∈ ((𝑀 + 1)...𝑁)) → (𝑀 + 1) ≤ 𝑖)
24	15, 18, 19, 21, 23	ltletrd 8379	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑖 ∈ ((𝑀 + 1)...𝑁)) → 0 < 𝑖)
25		elnnz 9262	. . . . . . 7 ⊢ (𝑖 ∈ ℕ ↔ (𝑖 ∈ ℤ ∧ 0 < 𝑖))
26	14, 24, 25	sylanbrc 417	. . . . . 6 ⊢ ((𝜑 ∧ 𝑖 ∈ ((𝑀 + 1)...𝑁)) → 𝑖 ∈ ℕ)
27	9, 12, 26	rspcdva 2846	. . . . 5 ⊢ ((𝜑 ∧ 𝑖 ∈ ((𝑀 + 1)...𝑁)) → (𝐹‘𝑖) ∈ ℂ)
28	7, 27	fsumcl 11407	. . . 4 ⊢ (𝜑 → Σ𝑖 ∈ ((𝑀 + 1)...𝑁)(𝐹‘𝑖) ∈ ℂ)
29	28	abscld 11189	. . 3 ⊢ (𝜑 → (abs‘Σ𝑖 ∈ ((𝑀 + 1)...𝑁)(𝐹‘𝑖)) ∈ ℝ)
30	27	abscld 11189	. . . 4 ⊢ ((𝜑 ∧ 𝑖 ∈ ((𝑀 + 1)...𝑁)) → (abs‘(𝐹‘𝑖)) ∈ ℝ)
31	7, 30	fsumrecl 11408	. . 3 ⊢ (𝜑 → Σ𝑖 ∈ ((𝑀 + 1)...𝑁)(abs‘(𝐹‘𝑖)) ∈ ℝ)
32		fveq2 5515	. . . . . . . . 9 ⊢ (𝑘 = 𝑀 → (𝐹‘𝑘) = (𝐹‘𝑀))
33	32	eleq1d 2246	. . . . . . . 8 ⊢ (𝑘 = 𝑀 → ((𝐹‘𝑘) ∈ ℂ ↔ (𝐹‘𝑀) ∈ ℂ))
34	33, 11, 1	rspcdva 2846	. . . . . . 7 ⊢ (𝜑 → (𝐹‘𝑀) ∈ ℂ)
35	34	adantr 276	. . . . . 6 ⊢ ((𝜑 ∧ 𝑖 ∈ ((𝑀 + 1)...𝑁)) → (𝐹‘𝑀) ∈ ℂ)
36	35	abscld 11189	. . . . 5 ⊢ ((𝜑 ∧ 𝑖 ∈ ((𝑀 + 1)...𝑁)) → (abs‘(𝐹‘𝑀)) ∈ ℝ)
37		cvgratnn.3	. . . . . . 7 ⊢ (𝜑 → 𝐴 ∈ ℝ)
38	37	adantr 276	. . . . . 6 ⊢ ((𝜑 ∧ 𝑖 ∈ ((𝑀 + 1)...𝑁)) → 𝐴 ∈ ℝ)
39	2	adantr 276	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑖 ∈ ((𝑀 + 1)...𝑁)) → 𝑀 ∈ ℤ)
40	14, 39	zsubcld 9379	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑖 ∈ ((𝑀 + 1)...𝑁)) → (𝑖 − 𝑀) ∈ ℤ)
41	1	adantr 276	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑖 ∈ ((𝑀 + 1)...𝑁)) → 𝑀 ∈ ℕ)
42	41	nnred 8931	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑖 ∈ ((𝑀 + 1)...𝑁)) → 𝑀 ∈ ℝ)
43	42	lep1d 8887	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑖 ∈ ((𝑀 + 1)...𝑁)) → 𝑀 ≤ (𝑀 + 1))
44	42, 18, 19, 43, 23	letrd 8080	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑖 ∈ ((𝑀 + 1)...𝑁)) → 𝑀 ≤ 𝑖)
45	19, 42	subge0d 8491	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑖 ∈ ((𝑀 + 1)...𝑁)) → (0 ≤ (𝑖 − 𝑀) ↔ 𝑀 ≤ 𝑖))
46	44, 45	mpbird 167	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑖 ∈ ((𝑀 + 1)...𝑁)) → 0 ≤ (𝑖 − 𝑀))
47		elnn0z 9265	. . . . . . 7 ⊢ ((𝑖 − 𝑀) ∈ ℕ₀ ↔ ((𝑖 − 𝑀) ∈ ℤ ∧ 0 ≤ (𝑖 − 𝑀)))
48	40, 46, 47	sylanbrc 417	. . . . . 6 ⊢ ((𝜑 ∧ 𝑖 ∈ ((𝑀 + 1)...𝑁)) → (𝑖 − 𝑀) ∈ ℕ₀)
49	38, 48	reexpcld 10670	. . . . 5 ⊢ ((𝜑 ∧ 𝑖 ∈ ((𝑀 + 1)...𝑁)) → (𝐴↑(𝑖 − 𝑀)) ∈ ℝ)
50	36, 49	remulcld 7987	. . . 4 ⊢ ((𝜑 ∧ 𝑖 ∈ ((𝑀 + 1)...𝑁)) → ((abs‘(𝐹‘𝑀)) · (𝐴↑(𝑖 − 𝑀))) ∈ ℝ)
51	7, 50	fsumrecl 11408	. . 3 ⊢ (𝜑 → Σ𝑖 ∈ ((𝑀 + 1)...𝑁)((abs‘(𝐹‘𝑀)) · (𝐴↑(𝑖 − 𝑀))) ∈ ℝ)
52	7, 27	fsumabs 11472	. . 3 ⊢ (𝜑 → (abs‘Σ𝑖 ∈ ((𝑀 + 1)...𝑁)(𝐹‘𝑖)) ≤ Σ𝑖 ∈ ((𝑀 + 1)...𝑁)(abs‘(𝐹‘𝑖)))
53		cvgratnn.4	. . . . . 6 ⊢ (𝜑 → 𝐴 < 1)
54	53	adantr 276	. . . . 5 ⊢ ((𝜑 ∧ 𝑖 ∈ ((𝑀 + 1)...𝑁)) → 𝐴 < 1)
55		cvgratnn.gt0	. . . . . 6 ⊢ (𝜑 → 0 < 𝐴)
56	55	adantr 276	. . . . 5 ⊢ ((𝜑 ∧ 𝑖 ∈ ((𝑀 + 1)...𝑁)) → 0 < 𝐴)
57	10	adantlr 477	. . . . 5 ⊢ (((𝜑 ∧ 𝑖 ∈ ((𝑀 + 1)...𝑁)) ∧ 𝑘 ∈ ℕ) → (𝐹‘𝑘) ∈ ℂ)
58		cvgratnn.7	. . . . . 6 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (abs‘(𝐹‘(𝑘 + 1))) ≤ (𝐴 · (abs‘(𝐹‘𝑘))))
59	58	adantlr 477	. . . . 5 ⊢ (((𝜑 ∧ 𝑖 ∈ ((𝑀 + 1)...𝑁)) ∧ 𝑘 ∈ ℕ) → (abs‘(𝐹‘(𝑘 + 1))) ≤ (𝐴 · (abs‘(𝐹‘𝑘))))
60		eluz2 9533	. . . . . 6 ⊢ (𝑖 ∈ (ℤ_≥‘𝑀) ↔ (𝑀 ∈ ℤ ∧ 𝑖 ∈ ℤ ∧ 𝑀 ≤ 𝑖))
61	39, 14, 44, 60	syl3anbrc 1181	. . . . 5 ⊢ ((𝜑 ∧ 𝑖 ∈ ((𝑀 + 1)...𝑁)) → 𝑖 ∈ (ℤ_≥‘𝑀))
62	38, 54, 56, 57, 59, 41, 61	cvgratnnlemmn 11532	. . . 4 ⊢ ((𝜑 ∧ 𝑖 ∈ ((𝑀 + 1)...𝑁)) → (abs‘(𝐹‘𝑖)) ≤ ((abs‘(𝐹‘𝑀)) · (𝐴↑(𝑖 − 𝑀))))
63	7, 30, 50, 62	fsumle 11470	. . 3 ⊢ (𝜑 → Σ𝑖 ∈ ((𝑀 + 1)...𝑁)(abs‘(𝐹‘𝑖)) ≤ Σ𝑖 ∈ ((𝑀 + 1)...𝑁)((abs‘(𝐹‘𝑀)) · (𝐴↑(𝑖 − 𝑀))))
64	29, 31, 51, 52, 63	letrd 8080	. 2 ⊢ (𝜑 → (abs‘Σ𝑖 ∈ ((𝑀 + 1)...𝑁)(𝐹‘𝑖)) ≤ Σ𝑖 ∈ ((𝑀 + 1)...𝑁)((abs‘(𝐹‘𝑀)) · (𝐴↑(𝑖 − 𝑀))))
65	34	abscld 11189	. . . 4 ⊢ (𝜑 → (abs‘(𝐹‘𝑀)) ∈ ℝ)
66	65	recnd 7985	. . 3 ⊢ (𝜑 → (abs‘(𝐹‘𝑀)) ∈ ℂ)
67	38	recnd 7985	. . . 4 ⊢ ((𝜑 ∧ 𝑖 ∈ ((𝑀 + 1)...𝑁)) → 𝐴 ∈ ℂ)
68	67, 48	expcld 10653	. . 3 ⊢ ((𝜑 ∧ 𝑖 ∈ ((𝑀 + 1)...𝑁)) → (𝐴↑(𝑖 − 𝑀)) ∈ ℂ)
69	7, 66, 68	fsummulc2 11455	. 2 ⊢ (𝜑 → ((abs‘(𝐹‘𝑀)) · Σ𝑖 ∈ ((𝑀 + 1)...𝑁)(𝐴↑(𝑖 − 𝑀))) = Σ𝑖 ∈ ((𝑀 + 1)...𝑁)((abs‘(𝐹‘𝑀)) · (𝐴↑(𝑖 − 𝑀))))
70	64, 69	breqtrrd 4031	1 ⊢ (𝜑 → (abs‘Σ𝑖 ∈ ((𝑀 + 1)...𝑁)(𝐹‘𝑖)) ≤ ((abs‘(𝐹‘𝑀)) · Σ𝑖 ∈ ((𝑀 + 1)...𝑁)(𝐴↑(𝑖 − 𝑀))))

Colors of variables: wff set class

Syntax hints: → wi 4 ∧ wa 104 = wceq 1353 ∈ wcel 2148 ∀wral 2455 class class class wbr 4003 ‘cfv 5216 (class class class)co 5874 ℂcc 7808 ℝcr 7809 0cc0 7810 1c1 7811 + caddc 7813 · cmul 7815 < clt 7991 ≤ cle 7992 − cmin 8127 ℕcn 8918 ℕ₀cn0 9175 ℤcz 9252 ℤ_≥cuz 9527 ...cfz 10007 ↑cexp 10518 abscabs 11005 Σcsu 11360

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 614 ax-in2 615 ax-io 709 ax-5 1447 ax-7 1448 ax-gen 1449 ax-ie1 1493 ax-ie2 1494 ax-8 1504 ax-10 1505 ax-11 1506 ax-i12 1507 ax-bndl 1509 ax-4 1510 ax-17 1526 ax-i9 1530 ax-ial 1534 ax-i5r 1535 ax-13 2150 ax-14 2151 ax-ext 2159 ax-coll 4118 ax-sep 4121 ax-nul 4129 ax-pow 4174 ax-pr 4209 ax-un 4433 ax-setind 4536 ax-iinf 4587 ax-cnex 7901 ax-resscn 7902 ax-1cn 7903 ax-1re 7904 ax-icn 7905 ax-addcl 7906 ax-addrcl 7907 ax-mulcl 7908 ax-mulrcl 7909 ax-addcom 7910 ax-mulcom 7911 ax-addass 7912 ax-mulass 7913 ax-distr 7914 ax-i2m1 7915 ax-0lt1 7916 ax-1rid 7917 ax-0id 7918 ax-rnegex 7919 ax-precex 7920 ax-cnre 7921 ax-pre-ltirr 7922 ax-pre-ltwlin 7923 ax-pre-lttrn 7924 ax-pre-apti 7925 ax-pre-ltadd 7926 ax-pre-mulgt0 7927 ax-pre-mulext 7928 ax-arch 7929 ax-caucvg 7930

This theorem depends on definitions: df-bi 117 df-dc 835 df-3or 979 df-3an 980 df-tru 1356 df-fal 1359 df-nf 1461 df-sb 1763 df-eu 2029 df-mo 2030 df-clab 2164 df-cleq 2170 df-clel 2173 df-nfc 2308 df-ne 2348 df-nel 2443 df-ral 2460 df-rex 2461 df-reu 2462 df-rmo 2463 df-rab 2464 df-v 2739 df-sbc 2963 df-csb 3058 df-dif 3131 df-un 3133 df-in 3135 df-ss 3142 df-nul 3423 df-if 3535 df-pw 3577 df-sn 3598 df-pr 3599 df-op 3601 df-uni 3810 df-int 3845 df-iun 3888 df-br 4004 df-opab 4065 df-mpt 4066 df-tr 4102 df-id 4293 df-po 4296 df-iso 4297 df-iord 4366 df-on 4368 df-ilim 4369 df-suc 4371 df-iom 4590 df-xp 4632 df-rel 4633 df-cnv 4634 df-co 4635 df-dm 4636 df-rn 4637 df-res 4638 df-ima 4639 df-iota 5178 df-fun 5218 df-fn 5219 df-f 5220 df-f1 5221 df-fo 5222 df-f1o 5223 df-fv 5224 df-isom 5225 df-riota 5830 df-ov 5877 df-oprab 5878 df-mpo 5879 df-1st 6140 df-2nd 6141 df-recs 6305 df-irdg 6370 df-frec 6391 df-1o 6416 df-oadd 6420 df-er 6534 df-en 6740 df-dom 6741 df-fin 6742 df-pnf 7993 df-mnf 7994 df-xr 7995 df-ltxr 7996 df-le 7997 df-sub 8129 df-neg 8130 df-reap 8531 df-ap 8538 df-div 8629 df-inn 8919 df-2 8977 df-3 8978 df-4 8979 df-n0 9176 df-z 9253 df-uz 9528 df-q 9619 df-rp 9653 df-ico 9893 df-fz 10008 df-fzo 10142 df-seqfrec 10445 df-exp 10519 df-ihash 10755 df-cj 10850 df-re 10851 df-im 10852 df-rsqrt 11006 df-abs 11007 df-clim 11286 df-sumdc 11361

This theorem is referenced by: cvgratnnlemrate 11537

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