cvgratnnlemseq - Intuitionistic Logic Explorer

	Intuitionistic Logic Explorer		< Previous Next > Nearby theorems
Mirrors > Home > ILE Home > Th. List > cvgratnnlemseq		GIF version

Theorem cvgratnnlemseq 11534

Description: Lemma for cvgratnn 11539. (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
cvgratnnlemseq	⊢ (𝜑 → ((seq1( + , 𝐹)‘𝑁) − (seq1( + , 𝐹)‘𝑀)) = Σ𝑖 ∈ ((𝑀 + 1)...𝑁)(𝐹‘𝑖))

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

Proof of Theorem cvgratnnlemseq Dummy variables 𝑥 𝑦 𝑧 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		nnuz 9563	. . . . . . 7 ⊢ ℕ = (ℤ_≥‘1)
2		1zzd 9280	. . . . . . 7 ⊢ (𝜑 → 1 ∈ ℤ)
3		cvgratnn.6	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (𝐹‘𝑘) ∈ ℂ)
4	1, 2, 3	serf 10474	. . . . . 6 ⊢ (𝜑 → seq1( + , 𝐹):ℕ⟶ℂ)
5	4	adantr 276	. . . . 5 ⊢ ((𝜑 ∧ 𝑀 < 𝑁) → seq1( + , 𝐹):ℕ⟶ℂ)
6		cvgratnn.m	. . . . . 6 ⊢ (𝜑 → 𝑀 ∈ ℕ)
7	6	adantr 276	. . . . 5 ⊢ ((𝜑 ∧ 𝑀 < 𝑁) → 𝑀 ∈ ℕ)
8	5, 7	ffvelcdmd 5653	. . . 4 ⊢ ((𝜑 ∧ 𝑀 < 𝑁) → (seq1( + , 𝐹)‘𝑀) ∈ ℂ)
9		eqid 2177	. . . . . . 7 ⊢ (ℤ_≥‘(𝑀 + 1)) = (ℤ_≥‘(𝑀 + 1))
10	6	nnzd 9374	. . . . . . . 8 ⊢ (𝜑 → 𝑀 ∈ ℤ)
11	10	peano2zd 9378	. . . . . . 7 ⊢ (𝜑 → (𝑀 + 1) ∈ ℤ)
12		fveq2 5516	. . . . . . . . 9 ⊢ (𝑘 = 𝑥 → (𝐹‘𝑘) = (𝐹‘𝑥))
13	12	eleq1d 2246	. . . . . . . 8 ⊢ (𝑘 = 𝑥 → ((𝐹‘𝑘) ∈ ℂ ↔ (𝐹‘𝑥) ∈ ℂ))
14	3	ralrimiva 2550	. . . . . . . . 9 ⊢ (𝜑 → ∀𝑘 ∈ ℕ (𝐹‘𝑘) ∈ ℂ)
15	14	adantr 276	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑥 ∈ (ℤ_≥‘(𝑀 + 1))) → ∀𝑘 ∈ ℕ (𝐹‘𝑘) ∈ ℂ)
16	6	peano2nnd 8934	. . . . . . . . 9 ⊢ (𝜑 → (𝑀 + 1) ∈ ℕ)
17		eluznn 9600	. . . . . . . . 9 ⊢ (((𝑀 + 1) ∈ ℕ ∧ 𝑥 ∈ (ℤ_≥‘(𝑀 + 1))) → 𝑥 ∈ ℕ)
18	16, 17	sylan 283	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑥 ∈ (ℤ_≥‘(𝑀 + 1))) → 𝑥 ∈ ℕ)
19	13, 15, 18	rspcdva 2847	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ (ℤ_≥‘(𝑀 + 1))) → (𝐹‘𝑥) ∈ ℂ)
20	9, 11, 19	serf 10474	. . . . . 6 ⊢ (𝜑 → seq(𝑀 + 1)( + , 𝐹):(ℤ_≥‘(𝑀 + 1))⟶ℂ)
21	20	adantr 276	. . . . 5 ⊢ ((𝜑 ∧ 𝑀 < 𝑁) → seq(𝑀 + 1)( + , 𝐹):(ℤ_≥‘(𝑀 + 1))⟶ℂ)
22	11	adantr 276	. . . . . 6 ⊢ ((𝜑 ∧ 𝑀 < 𝑁) → (𝑀 + 1) ∈ ℤ)
23		cvgratnn.n	. . . . . . . 8 ⊢ (𝜑 → 𝑁 ∈ (ℤ_≥‘𝑀))
24		eluzelz 9537	. . . . . . . 8 ⊢ (𝑁 ∈ (ℤ_≥‘𝑀) → 𝑁 ∈ ℤ)
25	23, 24	syl 14	. . . . . . 7 ⊢ (𝜑 → 𝑁 ∈ ℤ)
26	25	adantr 276	. . . . . 6 ⊢ ((𝜑 ∧ 𝑀 < 𝑁) → 𝑁 ∈ ℤ)
27		zltp1le 9307	. . . . . . . 8 ⊢ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → (𝑀 < 𝑁 ↔ (𝑀 + 1) ≤ 𝑁))
28	10, 25, 27	syl2anc 411	. . . . . . 7 ⊢ (𝜑 → (𝑀 < 𝑁 ↔ (𝑀 + 1) ≤ 𝑁))
29	28	biimpa 296	. . . . . 6 ⊢ ((𝜑 ∧ 𝑀 < 𝑁) → (𝑀 + 1) ≤ 𝑁)
30		eluz2 9534	. . . . . 6 ⊢ (𝑁 ∈ (ℤ_≥‘(𝑀 + 1)) ↔ ((𝑀 + 1) ∈ ℤ ∧ 𝑁 ∈ ℤ ∧ (𝑀 + 1) ≤ 𝑁))
31	22, 26, 29, 30	syl3anbrc 1181	. . . . 5 ⊢ ((𝜑 ∧ 𝑀 < 𝑁) → 𝑁 ∈ (ℤ_≥‘(𝑀 + 1)))
32	21, 31	ffvelcdmd 5653	. . . 4 ⊢ ((𝜑 ∧ 𝑀 < 𝑁) → (seq(𝑀 + 1)( + , 𝐹)‘𝑁) ∈ ℂ)
33	8, 32	pncan2d 8270	. . 3 ⊢ ((𝜑 ∧ 𝑀 < 𝑁) → (((seq1( + , 𝐹)‘𝑀) + (seq(𝑀 + 1)( + , 𝐹)‘𝑁)) − (seq1( + , 𝐹)‘𝑀)) = (seq(𝑀 + 1)( + , 𝐹)‘𝑁))
34		addcl 7936	. . . . . 6 ⊢ ((𝑥 ∈ ℂ ∧ 𝑦 ∈ ℂ) → (𝑥 + 𝑦) ∈ ℂ)
35	34	adantl 277	. . . . 5 ⊢ (((𝜑 ∧ 𝑀 < 𝑁) ∧ (𝑥 ∈ ℂ ∧ 𝑦 ∈ ℂ)) → (𝑥 + 𝑦) ∈ ℂ)
36		addass 7941	. . . . . 6 ⊢ ((𝑥 ∈ ℂ ∧ 𝑦 ∈ ℂ ∧ 𝑧 ∈ ℂ) → ((𝑥 + 𝑦) + 𝑧) = (𝑥 + (𝑦 + 𝑧)))
37	36	adantl 277	. . . . 5 ⊢ (((𝜑 ∧ 𝑀 < 𝑁) ∧ (𝑥 ∈ ℂ ∧ 𝑦 ∈ ℂ ∧ 𝑧 ∈ ℂ)) → ((𝑥 + 𝑦) + 𝑧) = (𝑥 + (𝑦 + 𝑧)))
38	6, 1	eleqtrdi 2270	. . . . . 6 ⊢ (𝜑 → 𝑀 ∈ (ℤ_≥‘1))
39	38	adantr 276	. . . . 5 ⊢ ((𝜑 ∧ 𝑀 < 𝑁) → 𝑀 ∈ (ℤ_≥‘1))
40	14	ad2antrr 488	. . . . . 6 ⊢ (((𝜑 ∧ 𝑀 < 𝑁) ∧ 𝑥 ∈ (ℤ_≥‘1)) → ∀𝑘 ∈ ℕ (𝐹‘𝑘) ∈ ℂ)
41		simpr 110	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑀 < 𝑁) ∧ 𝑥 ∈ (ℤ_≥‘1)) → 𝑥 ∈ (ℤ_≥‘1))
42	41, 1	eleqtrrdi 2271	. . . . . 6 ⊢ (((𝜑 ∧ 𝑀 < 𝑁) ∧ 𝑥 ∈ (ℤ_≥‘1)) → 𝑥 ∈ ℕ)
43	13, 40, 42	rspcdva 2847	. . . . 5 ⊢ (((𝜑 ∧ 𝑀 < 𝑁) ∧ 𝑥 ∈ (ℤ_≥‘1)) → (𝐹‘𝑥) ∈ ℂ)
44	35, 37, 31, 39, 43	seq3split 10479	. . . 4 ⊢ ((𝜑 ∧ 𝑀 < 𝑁) → (seq1( + , 𝐹)‘𝑁) = ((seq1( + , 𝐹)‘𝑀) + (seq(𝑀 + 1)( + , 𝐹)‘𝑁)))
45	44	oveq1d 5890	. . 3 ⊢ ((𝜑 ∧ 𝑀 < 𝑁) → ((seq1( + , 𝐹)‘𝑁) − (seq1( + , 𝐹)‘𝑀)) = (((seq1( + , 𝐹)‘𝑀) + (seq(𝑀 + 1)( + , 𝐹)‘𝑁)) − (seq1( + , 𝐹)‘𝑀)))
46		eqidd 2178	. . . 4 ⊢ (((𝜑 ∧ 𝑀 < 𝑁) ∧ 𝑖 ∈ (ℤ_≥‘(𝑀 + 1))) → (𝐹‘𝑖) = (𝐹‘𝑖))
47		fveq2 5516	. . . . . 6 ⊢ (𝑘 = 𝑖 → (𝐹‘𝑘) = (𝐹‘𝑖))
48	47	eleq1d 2246	. . . . 5 ⊢ (𝑘 = 𝑖 → ((𝐹‘𝑘) ∈ ℂ ↔ (𝐹‘𝑖) ∈ ℂ))
49	14	ad2antrr 488	. . . . 5 ⊢ (((𝜑 ∧ 𝑀 < 𝑁) ∧ 𝑖 ∈ (ℤ_≥‘(𝑀 + 1))) → ∀𝑘 ∈ ℕ (𝐹‘𝑘) ∈ ℂ)
50	16	ad2antrr 488	. . . . . 6 ⊢ (((𝜑 ∧ 𝑀 < 𝑁) ∧ 𝑖 ∈ (ℤ_≥‘(𝑀 + 1))) → (𝑀 + 1) ∈ ℕ)
51		simpr 110	. . . . . 6 ⊢ (((𝜑 ∧ 𝑀 < 𝑁) ∧ 𝑖 ∈ (ℤ_≥‘(𝑀 + 1))) → 𝑖 ∈ (ℤ_≥‘(𝑀 + 1)))
52		eluznn 9600	. . . . . 6 ⊢ (((𝑀 + 1) ∈ ℕ ∧ 𝑖 ∈ (ℤ_≥‘(𝑀 + 1))) → 𝑖 ∈ ℕ)
53	50, 51, 52	syl2anc 411	. . . . 5 ⊢ (((𝜑 ∧ 𝑀 < 𝑁) ∧ 𝑖 ∈ (ℤ_≥‘(𝑀 + 1))) → 𝑖 ∈ ℕ)
54	48, 49, 53	rspcdva 2847	. . . 4 ⊢ (((𝜑 ∧ 𝑀 < 𝑁) ∧ 𝑖 ∈ (ℤ_≥‘(𝑀 + 1))) → (𝐹‘𝑖) ∈ ℂ)
55	46, 31, 54	fsum3ser 11405	. . 3 ⊢ ((𝜑 ∧ 𝑀 < 𝑁) → Σ𝑖 ∈ ((𝑀 + 1)...𝑁)(𝐹‘𝑖) = (seq(𝑀 + 1)( + , 𝐹)‘𝑁))
56	33, 45, 55	3eqtr4d 2220	. 2 ⊢ ((𝜑 ∧ 𝑀 < 𝑁) → ((seq1( + , 𝐹)‘𝑁) − (seq1( + , 𝐹)‘𝑀)) = Σ𝑖 ∈ ((𝑀 + 1)...𝑁)(𝐹‘𝑖))
57		simpr 110	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑀 = 𝑁) → 𝑀 = 𝑁)
58	6	nnred 8932	. . . . . . . . 9 ⊢ (𝜑 → 𝑀 ∈ ℝ)
59	58	ltp1d 8887	. . . . . . . 8 ⊢ (𝜑 → 𝑀 < (𝑀 + 1))
60	59	adantr 276	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑀 = 𝑁) → 𝑀 < (𝑀 + 1))
61	57, 60	eqbrtrrd 4028	. . . . . 6 ⊢ ((𝜑 ∧ 𝑀 = 𝑁) → 𝑁 < (𝑀 + 1))
62	11	adantr 276	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑀 = 𝑁) → (𝑀 + 1) ∈ ℤ)
63	25	adantr 276	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑀 = 𝑁) → 𝑁 ∈ ℤ)
64		fzn 10042	. . . . . . 7 ⊢ (((𝑀 + 1) ∈ ℤ ∧ 𝑁 ∈ ℤ) → (𝑁 < (𝑀 + 1) ↔ ((𝑀 + 1)...𝑁) = ∅))
65	62, 63, 64	syl2anc 411	. . . . . 6 ⊢ ((𝜑 ∧ 𝑀 = 𝑁) → (𝑁 < (𝑀 + 1) ↔ ((𝑀 + 1)...𝑁) = ∅))
66	61, 65	mpbid 147	. . . . 5 ⊢ ((𝜑 ∧ 𝑀 = 𝑁) → ((𝑀 + 1)...𝑁) = ∅)
67	66	sumeq1d 11374	. . . 4 ⊢ ((𝜑 ∧ 𝑀 = 𝑁) → Σ𝑖 ∈ ((𝑀 + 1)...𝑁)(𝐹‘𝑖) = Σ𝑖 ∈ ∅ (𝐹‘𝑖))
68		sum0 11396	. . . 4 ⊢ Σ𝑖 ∈ ∅ (𝐹‘𝑖) = 0
69	67, 68	eqtrdi 2226	. . 3 ⊢ ((𝜑 ∧ 𝑀 = 𝑁) → Σ𝑖 ∈ ((𝑀 + 1)...𝑁)(𝐹‘𝑖) = 0)
70	4, 6	ffvelcdmd 5653	. . . . 5 ⊢ (𝜑 → (seq1( + , 𝐹)‘𝑀) ∈ ℂ)
71	70	adantr 276	. . . 4 ⊢ ((𝜑 ∧ 𝑀 = 𝑁) → (seq1( + , 𝐹)‘𝑀) ∈ ℂ)
72	71	subidd 8256	. . 3 ⊢ ((𝜑 ∧ 𝑀 = 𝑁) → ((seq1( + , 𝐹)‘𝑀) − (seq1( + , 𝐹)‘𝑀)) = 0)
73	57	fveq2d 5520	. . . 4 ⊢ ((𝜑 ∧ 𝑀 = 𝑁) → (seq1( + , 𝐹)‘𝑀) = (seq1( + , 𝐹)‘𝑁))
74	73	oveq1d 5890	. . 3 ⊢ ((𝜑 ∧ 𝑀 = 𝑁) → ((seq1( + , 𝐹)‘𝑀) − (seq1( + , 𝐹)‘𝑀)) = ((seq1( + , 𝐹)‘𝑁) − (seq1( + , 𝐹)‘𝑀)))
75	69, 72, 74	3eqtr2rd 2217	. 2 ⊢ ((𝜑 ∧ 𝑀 = 𝑁) → ((seq1( + , 𝐹)‘𝑁) − (seq1( + , 𝐹)‘𝑀)) = Σ𝑖 ∈ ((𝑀 + 1)...𝑁)(𝐹‘𝑖))
76		eluzle 9540	. . . 4 ⊢ (𝑁 ∈ (ℤ_≥‘𝑀) → 𝑀 ≤ 𝑁)
77	23, 76	syl 14	. . 3 ⊢ (𝜑 → 𝑀 ≤ 𝑁)
78		zleloe 9300	. . . 4 ⊢ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → (𝑀 ≤ 𝑁 ↔ (𝑀 < 𝑁 ∨ 𝑀 = 𝑁)))
79	10, 25, 78	syl2anc 411	. . 3 ⊢ (𝜑 → (𝑀 ≤ 𝑁 ↔ (𝑀 < 𝑁 ∨ 𝑀 = 𝑁)))
80	77, 79	mpbid 147	. 2 ⊢ (𝜑 → (𝑀 < 𝑁 ∨ 𝑀 = 𝑁))
81	56, 75, 80	mpjaodan 798	1 ⊢ (𝜑 → ((seq1( + , 𝐹)‘𝑁) − (seq1( + , 𝐹)‘𝑀)) = Σ𝑖 ∈ ((𝑀 + 1)...𝑁)(𝐹‘𝑖))

Colors of variables: wff set class

Syntax hints: → wi 4 ∧ wa 104 ↔ wb 105 ∨ wo 708 ∧ w3a 978 = wceq 1353 ∈ wcel 2148 ∀wral 2455 ∅c0 3423 class class class wbr 4004 ⟶wf 5213 ‘cfv 5217 (class class class)co 5875 ℂcc 7809 ℝcr 7810 0cc0 7811 1c1 7812 + caddc 7814 · cmul 7816 < clt 7992 ≤ cle 7993 − cmin 8128 ℕcn 8919 ℤcz 9253 ℤ_≥cuz 9528 ...cfz 10008 seqcseq 10445 abscabs 11006 Σcsu 11361

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 4119 ax-sep 4122 ax-nul 4130 ax-pow 4175 ax-pr 4210 ax-un 4434 ax-setind 4537 ax-iinf 4588 ax-cnex 7902 ax-resscn 7903 ax-1cn 7904 ax-1re 7905 ax-icn 7906 ax-addcl 7907 ax-addrcl 7908 ax-mulcl 7909 ax-mulrcl 7910 ax-addcom 7911 ax-mulcom 7912 ax-addass 7913 ax-mulass 7914 ax-distr 7915 ax-i2m1 7916 ax-0lt1 7917 ax-1rid 7918 ax-0id 7919 ax-rnegex 7920 ax-precex 7921 ax-cnre 7922 ax-pre-ltirr 7923 ax-pre-ltwlin 7924 ax-pre-lttrn 7925 ax-pre-apti 7926 ax-pre-ltadd 7927 ax-pre-mulgt0 7928 ax-pre-mulext 7929 ax-arch 7930 ax-caucvg 7931

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 2740 df-sbc 2964 df-csb 3059 df-dif 3132 df-un 3134 df-in 3136 df-ss 3143 df-nul 3424 df-if 3536 df-pw 3578 df-sn 3599 df-pr 3600 df-op 3602 df-uni 3811 df-int 3846 df-iun 3889 df-br 4005 df-opab 4066 df-mpt 4067 df-tr 4103 df-id 4294 df-po 4297 df-iso 4298 df-iord 4367 df-on 4369 df-ilim 4370 df-suc 4372 df-iom 4591 df-xp 4633 df-rel 4634 df-cnv 4635 df-co 4636 df-dm 4637 df-rn 4638 df-res 4639 df-ima 4640 df-iota 5179 df-fun 5219 df-fn 5220 df-f 5221 df-f1 5222 df-fo 5223 df-f1o 5224 df-fv 5225 df-isom 5226 df-riota 5831 df-ov 5878 df-oprab 5879 df-mpo 5880 df-1st 6141 df-2nd 6142 df-recs 6306 df-irdg 6371 df-frec 6392 df-1o 6417 df-oadd 6421 df-er 6535 df-en 6741 df-dom 6742 df-fin 6743 df-pnf 7994 df-mnf 7995 df-xr 7996 df-ltxr 7997 df-le 7998 df-sub 8130 df-neg 8131 df-reap 8532 df-ap 8539 df-div 8630 df-inn 8920 df-2 8978 df-3 8979 df-4 8980 df-n0 9177 df-z 9254 df-uz 9529 df-q 9620 df-rp 9654 df-fz 10009 df-fzo 10143 df-seqfrec 10446 df-exp 10520 df-ihash 10756 df-cj 10851 df-re 10852 df-im 10853 df-rsqrt 11007 df-abs 11008 df-clim 11287 df-sumdc 11362

This theorem is referenced by: cvgratnnlemrate 11538

W3C validator