cvgratnnlemabsle - Intuitionistic Logic Explorer

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Theorem cvgratnnlemabsle 10984

Description: Lemma for cvgratnn 10988. (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 8930	. . . . . . 7 ⊢ (𝜑 → 𝑀 ∈ ℤ)
3	2	peano2zd 8934	. . . . . 6 ⊢ (𝜑 → (𝑀 + 1) ∈ ℤ)
4		cvgratnn.n	. . . . . . 7 ⊢ (𝜑 → 𝑁 ∈ (ℤ_≥‘𝑀))
5		eluzelz 9091	. . . . . . 7 ⊢ (𝑁 ∈ (ℤ_≥‘𝑀) → 𝑁 ∈ ℤ)
6	4, 5	syl 14	. . . . . 6 ⊢ (𝜑 → 𝑁 ∈ ℤ)
7	3, 6	fzfigd 9901	. . . . 5 ⊢ (𝜑 → ((𝑀 + 1)...𝑁) ∈ Fin)
8		fveq2 5320	. . . . . . 7 ⊢ (𝑘 = 𝑖 → (𝐹‘𝑘) = (𝐹‘𝑖))
9	8	eleq1d 2157	. . . . . 6 ⊢ (𝑘 = 𝑖 → ((𝐹‘𝑘) ∈ ℂ ↔ (𝐹‘𝑖) ∈ ℂ))
10		cvgratnn.6	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (𝐹‘𝑘) ∈ ℂ)
11	10	ralrimiva 2447	. . . . . . 7 ⊢ (𝜑 → ∀𝑘 ∈ ℕ (𝐹‘𝑘) ∈ ℂ)
12	11	adantr 271	. . . . . 6 ⊢ ((𝜑 ∧ 𝑖 ∈ ((𝑀 + 1)...𝑁)) → ∀𝑘 ∈ ℕ (𝐹‘𝑘) ∈ ℂ)
13		elfzelz 9503	. . . . . . . 8 ⊢ (𝑖 ∈ ((𝑀 + 1)...𝑁) → 𝑖 ∈ ℤ)
14	13	adantl 272	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑖 ∈ ((𝑀 + 1)...𝑁)) → 𝑖 ∈ ℤ)
15		0red 7552	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑖 ∈ ((𝑀 + 1)...𝑁)) → 0 ∈ ℝ)
16	1	peano2nnd 8500	. . . . . . . . . 10 ⊢ (𝜑 → (𝑀 + 1) ∈ ℕ)
17	16	adantr 271	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑖 ∈ ((𝑀 + 1)...𝑁)) → (𝑀 + 1) ∈ ℕ)
18	17	nnred 8498	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑖 ∈ ((𝑀 + 1)...𝑁)) → (𝑀 + 1) ∈ ℝ)
19	14	zred 8931	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑖 ∈ ((𝑀 + 1)...𝑁)) → 𝑖 ∈ ℝ)
20	16	nngt0d 8529	. . . . . . . . 9 ⊢ (𝜑 → 0 < (𝑀 + 1))
21	20	adantr 271	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑖 ∈ ((𝑀 + 1)...𝑁)) → 0 < (𝑀 + 1))
22		elfzle1 9504	. . . . . . . . 9 ⊢ (𝑖 ∈ ((𝑀 + 1)...𝑁) → (𝑀 + 1) ≤ 𝑖)
23	22	adantl 272	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑖 ∈ ((𝑀 + 1)...𝑁)) → (𝑀 + 1) ≤ 𝑖)
24	15, 18, 19, 21, 23	ltletrd 7964	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑖 ∈ ((𝑀 + 1)...𝑁)) → 0 < 𝑖)
25		elnnz 8823	. . . . . . 7 ⊢ (𝑖 ∈ ℕ ↔ (𝑖 ∈ ℤ ∧ 0 < 𝑖))
26	14, 24, 25	sylanbrc 409	. . . . . 6 ⊢ ((𝜑 ∧ 𝑖 ∈ ((𝑀 + 1)...𝑁)) → 𝑖 ∈ ℕ)
27	9, 12, 26	rspcdva 2730	. . . . 5 ⊢ ((𝜑 ∧ 𝑖 ∈ ((𝑀 + 1)...𝑁)) → (𝐹‘𝑖) ∈ ℂ)
28	7, 27	fsumcl 10857	. . . 4 ⊢ (𝜑 → Σ𝑖 ∈ ((𝑀 + 1)...𝑁)(𝐹‘𝑖) ∈ ℂ)
29	28	abscld 10677	. . 3 ⊢ (𝜑 → (abs‘Σ𝑖 ∈ ((𝑀 + 1)...𝑁)(𝐹‘𝑖)) ∈ ℝ)
30	27	abscld 10677	. . . 4 ⊢ ((𝜑 ∧ 𝑖 ∈ ((𝑀 + 1)...𝑁)) → (abs‘(𝐹‘𝑖)) ∈ ℝ)
31	7, 30	fsumrecl 10858	. . 3 ⊢ (𝜑 → Σ𝑖 ∈ ((𝑀 + 1)...𝑁)(abs‘(𝐹‘𝑖)) ∈ ℝ)
32		fveq2 5320	. . . . . . . . 9 ⊢ (𝑘 = 𝑀 → (𝐹‘𝑘) = (𝐹‘𝑀))
33	32	eleq1d 2157	. . . . . . . 8 ⊢ (𝑘 = 𝑀 → ((𝐹‘𝑘) ∈ ℂ ↔ (𝐹‘𝑀) ∈ ℂ))
34	33, 11, 1	rspcdva 2730	. . . . . . 7 ⊢ (𝜑 → (𝐹‘𝑀) ∈ ℂ)
35	34	adantr 271	. . . . . 6 ⊢ ((𝜑 ∧ 𝑖 ∈ ((𝑀 + 1)...𝑁)) → (𝐹‘𝑀) ∈ ℂ)
36	35	abscld 10677	. . . . 5 ⊢ ((𝜑 ∧ 𝑖 ∈ ((𝑀 + 1)...𝑁)) → (abs‘(𝐹‘𝑀)) ∈ ℝ)
37		cvgratnn.3	. . . . . . 7 ⊢ (𝜑 → 𝐴 ∈ ℝ)
38	37	adantr 271	. . . . . 6 ⊢ ((𝜑 ∧ 𝑖 ∈ ((𝑀 + 1)...𝑁)) → 𝐴 ∈ ℝ)
39	2	adantr 271	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑖 ∈ ((𝑀 + 1)...𝑁)) → 𝑀 ∈ ℤ)
40	14, 39	zsubcld 8936	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑖 ∈ ((𝑀 + 1)...𝑁)) → (𝑖 − 𝑀) ∈ ℤ)
41	1	adantr 271	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑖 ∈ ((𝑀 + 1)...𝑁)) → 𝑀 ∈ ℕ)
42	41	nnred 8498	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑖 ∈ ((𝑀 + 1)...𝑁)) → 𝑀 ∈ ℝ)
43	42	lep1d 8455	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑖 ∈ ((𝑀 + 1)...𝑁)) → 𝑀 ≤ (𝑀 + 1))
44	42, 18, 19, 43, 23	letrd 7670	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑖 ∈ ((𝑀 + 1)...𝑁)) → 𝑀 ≤ 𝑖)
45	19, 42	subge0d 8075	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑖 ∈ ((𝑀 + 1)...𝑁)) → (0 ≤ (𝑖 − 𝑀) ↔ 𝑀 ≤ 𝑖))
46	44, 45	mpbird 166	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑖 ∈ ((𝑀 + 1)...𝑁)) → 0 ≤ (𝑖 − 𝑀))
47		elnn0z 8826	. . . . . . 7 ⊢ ((𝑖 − 𝑀) ∈ ℕ₀ ↔ ((𝑖 − 𝑀) ∈ ℤ ∧ 0 ≤ (𝑖 − 𝑀)))
48	40, 46, 47	sylanbrc 409	. . . . . 6 ⊢ ((𝜑 ∧ 𝑖 ∈ ((𝑀 + 1)...𝑁)) → (𝑖 − 𝑀) ∈ ℕ₀)
49	38, 48	reexpcld 10166	. . . . 5 ⊢ ((𝜑 ∧ 𝑖 ∈ ((𝑀 + 1)...𝑁)) → (𝐴↑(𝑖 − 𝑀)) ∈ ℝ)
50	36, 49	remulcld 7581	. . . 4 ⊢ ((𝜑 ∧ 𝑖 ∈ ((𝑀 + 1)...𝑁)) → ((abs‘(𝐹‘𝑀)) · (𝐴↑(𝑖 − 𝑀))) ∈ ℝ)
51	7, 50	fsumrecl 10858	. . 3 ⊢ (𝜑 → Σ𝑖 ∈ ((𝑀 + 1)...𝑁)((abs‘(𝐹‘𝑀)) · (𝐴↑(𝑖 − 𝑀))) ∈ ℝ)
52	7, 27	fsumabs 10922	. . 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 271	. . . . 5 ⊢ ((𝜑 ∧ 𝑖 ∈ ((𝑀 + 1)...𝑁)) → 𝐴 < 1)
55		cvgratnn.gt0	. . . . . 6 ⊢ (𝜑 → 0 < 𝐴)
56	55	adantr 271	. . . . 5 ⊢ ((𝜑 ∧ 𝑖 ∈ ((𝑀 + 1)...𝑁)) → 0 < 𝐴)
57	10	adantlr 462	. . . . 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 462	. . . . 5 ⊢ (((𝜑 ∧ 𝑖 ∈ ((𝑀 + 1)...𝑁)) ∧ 𝑘 ∈ ℕ) → (abs‘(𝐹‘(𝑘 + 1))) ≤ (𝐴 · (abs‘(𝐹‘𝑘))))
60		eluz2 9088	. . . . . 6 ⊢ (𝑖 ∈ (ℤ_≥‘𝑀) ↔ (𝑀 ∈ ℤ ∧ 𝑖 ∈ ℤ ∧ 𝑀 ≤ 𝑖))
61	39, 14, 44, 60	syl3anbrc 1128	. . . . 5 ⊢ ((𝜑 ∧ 𝑖 ∈ ((𝑀 + 1)...𝑁)) → 𝑖 ∈ (ℤ_≥‘𝑀))
62	38, 54, 56, 57, 59, 41, 61	cvgratnnlemmn 10982	. . . 4 ⊢ ((𝜑 ∧ 𝑖 ∈ ((𝑀 + 1)...𝑁)) → (abs‘(𝐹‘𝑖)) ≤ ((abs‘(𝐹‘𝑀)) · (𝐴↑(𝑖 − 𝑀))))
63	7, 30, 50, 62	fsumle 10920	. . 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 7670	. 2 ⊢ (𝜑 → (abs‘Σ𝑖 ∈ ((𝑀 + 1)...𝑁)(𝐹‘𝑖)) ≤ Σ𝑖 ∈ ((𝑀 + 1)...𝑁)((abs‘(𝐹‘𝑀)) · (𝐴↑(𝑖 − 𝑀))))
65	34	abscld 10677	. . . 4 ⊢ (𝜑 → (abs‘(𝐹‘𝑀)) ∈ ℝ)
66	65	recnd 7579	. . 3 ⊢ (𝜑 → (abs‘(𝐹‘𝑀)) ∈ ℂ)
67	38	recnd 7579	. . . 4 ⊢ ((𝜑 ∧ 𝑖 ∈ ((𝑀 + 1)...𝑁)) → 𝐴 ∈ ℂ)
68	67, 48	expcld 10149	. . 3 ⊢ ((𝜑 ∧ 𝑖 ∈ ((𝑀 + 1)...𝑁)) → (𝐴↑(𝑖 − 𝑀)) ∈ ℂ)
69	7, 66, 68	fsummulc2 10905	. 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 3879	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 103 = wceq 1290 ∈ wcel 1439 ∀wral 2360 class class class wbr 3853 ‘cfv 5030 (class class class)co 5668 ℂcc 7411 ℝcr 7412 0cc0 7413 1c1 7414 + caddc 7416 · cmul 7418 < clt 7585 ≤ cle 7586 − cmin 7716 ℕcn 8485 ℕ₀cn0 8736 ℤcz 8813 ℤ_≥cuz 9082 ...cfz 9487 ↑cexp 10017 abscabs 10493 Σcsu 10805

This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-in1 580 ax-in2 581 ax-io 666 ax-5 1382 ax-7 1383 ax-gen 1384 ax-ie1 1428 ax-ie2 1429 ax-8 1441 ax-10 1442 ax-11 1443 ax-i12 1444 ax-bndl 1445 ax-4 1446 ax-13 1450 ax-14 1451 ax-17 1465 ax-i9 1469 ax-ial 1473 ax-i5r 1474 ax-ext 2071 ax-coll 3962 ax-sep 3965 ax-nul 3973 ax-pow 4017 ax-pr 4047 ax-un 4271 ax-setind 4368 ax-iinf 4418 ax-cnex 7499 ax-resscn 7500 ax-1cn 7501 ax-1re 7502 ax-icn 7503 ax-addcl 7504 ax-addrcl 7505 ax-mulcl 7506 ax-mulrcl 7507 ax-addcom 7508 ax-mulcom 7509 ax-addass 7510 ax-mulass 7511 ax-distr 7512 ax-i2m1 7513 ax-0lt1 7514 ax-1rid 7515 ax-0id 7516 ax-rnegex 7517 ax-precex 7518 ax-cnre 7519 ax-pre-ltirr 7520 ax-pre-ltwlin 7521 ax-pre-lttrn 7522 ax-pre-apti 7523 ax-pre-ltadd 7524 ax-pre-mulgt0 7525 ax-pre-mulext 7526 ax-arch 7527 ax-caucvg 7528

This theorem depends on definitions: df-bi 116 df-dc 782 df-3or 926 df-3an 927 df-tru 1293 df-fal 1296 df-nf 1396 df-sb 1694 df-eu 1952 df-mo 1953 df-clab 2076 df-cleq 2082 df-clel 2085 df-nfc 2218 df-ne 2257 df-nel 2352 df-ral 2365 df-rex 2366 df-reu 2367 df-rmo 2368 df-rab 2369 df-v 2624 df-sbc 2844 df-csb 2937 df-dif 3004 df-un 3006 df-in 3008 df-ss 3015 df-nul 3290 df-if 3400 df-pw 3437 df-sn 3458 df-pr 3459 df-op 3461 df-uni 3662 df-int 3697 df-iun 3740 df-br 3854 df-opab 3908 df-mpt 3909 df-tr 3945 df-id 4131 df-po 4134 df-iso 4135 df-iord 4204 df-on 4206 df-ilim 4207 df-suc 4209 df-iom 4421 df-xp 4460 df-rel 4461 df-cnv 4462 df-co 4463 df-dm 4464 df-rn 4465 df-res 4466 df-ima 4467 df-iota 4995 df-fun 5032 df-fn 5033 df-f 5034 df-f1 5035 df-fo 5036 df-f1o 5037 df-fv 5038 df-isom 5039 df-riota 5624 df-ov 5671 df-oprab 5672 df-mpt2 5673 df-1st 5927 df-2nd 5928 df-recs 6086 df-irdg 6151 df-frec 6172 df-1o 6197 df-oadd 6201 df-er 6308 df-en 6514 df-dom 6515 df-fin 6516 df-pnf 7587 df-mnf 7588 df-xr 7589 df-ltxr 7590 df-le 7591 df-sub 7718 df-neg 7719 df-reap 8115 df-ap 8122 df-div 8203 df-inn 8486 df-2 8544 df-3 8545 df-4 8546 df-n0 8737 df-z 8814 df-uz 9083 df-q 9168 df-rp 9198 df-ico 9375 df-fz 9488 df-fzo 9617 df-iseq 9916 df-seq3 9917 df-exp 10018 df-ihash 10247 df-cj 10339 df-re 10340 df-im 10341 df-rsqrt 10494 df-abs 10495 df-clim 10730 df-isum 10806

This theorem is referenced by: cvgratnnlemrate 10987

W3C validator