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Mirrors > Home > MPE Home > Th. List > isum1p | Structured version Visualization version GIF version |
Description: The infinite sum of a converging infinite series equals the first term plus the infinite sum of the rest of it. (Contributed by NM, 2-Jan-2006.) (Revised by Mario Carneiro, 24-Apr-2014.) |
Ref | Expression |
---|---|
isum1p.1 | ⊢ 𝑍 = (ℤ≥‘𝑀) |
isum1p.3 | ⊢ (𝜑 → 𝑀 ∈ ℤ) |
isum1p.4 | ⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → (𝐹‘𝑘) = 𝐴) |
isum1p.5 | ⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → 𝐴 ∈ ℂ) |
isum1p.6 | ⊢ (𝜑 → seq𝑀( + , 𝐹) ∈ dom ⇝ ) |
Ref | Expression |
---|---|
isum1p | ⊢ (𝜑 → Σ𝑘 ∈ 𝑍 𝐴 = ((𝐹‘𝑀) + Σ𝑘 ∈ (ℤ≥‘(𝑀 + 1))𝐴)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | isum1p.1 | . . 3 ⊢ 𝑍 = (ℤ≥‘𝑀) | |
2 | eqid 2738 | . . 3 ⊢ (ℤ≥‘(𝑀 + 1)) = (ℤ≥‘(𝑀 + 1)) | |
3 | isum1p.3 | . . . . . 6 ⊢ (𝜑 → 𝑀 ∈ ℤ) | |
4 | uzid 12526 | . . . . . 6 ⊢ (𝑀 ∈ ℤ → 𝑀 ∈ (ℤ≥‘𝑀)) | |
5 | 3, 4 | syl 17 | . . . . 5 ⊢ (𝜑 → 𝑀 ∈ (ℤ≥‘𝑀)) |
6 | peano2uz 12570 | . . . . 5 ⊢ (𝑀 ∈ (ℤ≥‘𝑀) → (𝑀 + 1) ∈ (ℤ≥‘𝑀)) | |
7 | 5, 6 | syl 17 | . . . 4 ⊢ (𝜑 → (𝑀 + 1) ∈ (ℤ≥‘𝑀)) |
8 | 7, 1 | eleqtrrdi 2850 | . . 3 ⊢ (𝜑 → (𝑀 + 1) ∈ 𝑍) |
9 | isum1p.4 | . . 3 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → (𝐹‘𝑘) = 𝐴) | |
10 | isum1p.5 | . . 3 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → 𝐴 ∈ ℂ) | |
11 | isum1p.6 | . . 3 ⊢ (𝜑 → seq𝑀( + , 𝐹) ∈ dom ⇝ ) | |
12 | 1, 2, 8, 9, 10, 11 | isumsplit 15480 | . 2 ⊢ (𝜑 → Σ𝑘 ∈ 𝑍 𝐴 = (Σ𝑘 ∈ (𝑀...((𝑀 + 1) − 1))𝐴 + Σ𝑘 ∈ (ℤ≥‘(𝑀 + 1))𝐴)) |
13 | 3 | zcnd 12356 | . . . . . . 7 ⊢ (𝜑 → 𝑀 ∈ ℂ) |
14 | ax-1cn 10860 | . . . . . . 7 ⊢ 1 ∈ ℂ | |
15 | pncan 11157 | . . . . . . 7 ⊢ ((𝑀 ∈ ℂ ∧ 1 ∈ ℂ) → ((𝑀 + 1) − 1) = 𝑀) | |
16 | 13, 14, 15 | sylancl 585 | . . . . . 6 ⊢ (𝜑 → ((𝑀 + 1) − 1) = 𝑀) |
17 | 16 | oveq2d 7271 | . . . . 5 ⊢ (𝜑 → (𝑀...((𝑀 + 1) − 1)) = (𝑀...𝑀)) |
18 | 17 | sumeq1d 15341 | . . . 4 ⊢ (𝜑 → Σ𝑘 ∈ (𝑀...((𝑀 + 1) − 1))𝐴 = Σ𝑘 ∈ (𝑀...𝑀)𝐴) |
19 | elfzuz 13181 | . . . . . . 7 ⊢ (𝑘 ∈ (𝑀...𝑀) → 𝑘 ∈ (ℤ≥‘𝑀)) | |
20 | 19, 1 | eleqtrrdi 2850 | . . . . . 6 ⊢ (𝑘 ∈ (𝑀...𝑀) → 𝑘 ∈ 𝑍) |
21 | 20, 9 | sylan2 592 | . . . . 5 ⊢ ((𝜑 ∧ 𝑘 ∈ (𝑀...𝑀)) → (𝐹‘𝑘) = 𝐴) |
22 | 21 | sumeq2dv 15343 | . . . 4 ⊢ (𝜑 → Σ𝑘 ∈ (𝑀...𝑀)(𝐹‘𝑘) = Σ𝑘 ∈ (𝑀...𝑀)𝐴) |
23 | fveq2 6756 | . . . . . . 7 ⊢ (𝑘 = 𝑀 → (𝐹‘𝑘) = (𝐹‘𝑀)) | |
24 | 23 | eleq1d 2823 | . . . . . 6 ⊢ (𝑘 = 𝑀 → ((𝐹‘𝑘) ∈ ℂ ↔ (𝐹‘𝑀) ∈ ℂ)) |
25 | 9, 10 | eqeltrd 2839 | . . . . . . 7 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → (𝐹‘𝑘) ∈ ℂ) |
26 | 25 | ralrimiva 3107 | . . . . . 6 ⊢ (𝜑 → ∀𝑘 ∈ 𝑍 (𝐹‘𝑘) ∈ ℂ) |
27 | 5, 1 | eleqtrrdi 2850 | . . . . . 6 ⊢ (𝜑 → 𝑀 ∈ 𝑍) |
28 | 24, 26, 27 | rspcdva 3554 | . . . . 5 ⊢ (𝜑 → (𝐹‘𝑀) ∈ ℂ) |
29 | 23 | fsum1 15387 | . . . . 5 ⊢ ((𝑀 ∈ ℤ ∧ (𝐹‘𝑀) ∈ ℂ) → Σ𝑘 ∈ (𝑀...𝑀)(𝐹‘𝑘) = (𝐹‘𝑀)) |
30 | 3, 28, 29 | syl2anc 583 | . . . 4 ⊢ (𝜑 → Σ𝑘 ∈ (𝑀...𝑀)(𝐹‘𝑘) = (𝐹‘𝑀)) |
31 | 18, 22, 30 | 3eqtr2d 2784 | . . 3 ⊢ (𝜑 → Σ𝑘 ∈ (𝑀...((𝑀 + 1) − 1))𝐴 = (𝐹‘𝑀)) |
32 | 31 | oveq1d 7270 | . 2 ⊢ (𝜑 → (Σ𝑘 ∈ (𝑀...((𝑀 + 1) − 1))𝐴 + Σ𝑘 ∈ (ℤ≥‘(𝑀 + 1))𝐴) = ((𝐹‘𝑀) + Σ𝑘 ∈ (ℤ≥‘(𝑀 + 1))𝐴)) |
33 | 12, 32 | eqtrd 2778 | 1 ⊢ (𝜑 → Σ𝑘 ∈ 𝑍 𝐴 = ((𝐹‘𝑀) + Σ𝑘 ∈ (ℤ≥‘(𝑀 + 1))𝐴)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 395 = wceq 1539 ∈ wcel 2108 dom cdm 5580 ‘cfv 6418 (class class class)co 7255 ℂcc 10800 1c1 10803 + caddc 10805 − cmin 11135 ℤcz 12249 ℤ≥cuz 12511 ...cfz 13168 seqcseq 13649 ⇝ cli 15121 Σcsu 15325 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1799 ax-4 1813 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2110 ax-9 2118 ax-10 2139 ax-11 2156 ax-12 2173 ax-ext 2709 ax-rep 5205 ax-sep 5218 ax-nul 5225 ax-pow 5283 ax-pr 5347 ax-un 7566 ax-inf2 9329 ax-cnex 10858 ax-resscn 10859 ax-1cn 10860 ax-icn 10861 ax-addcl 10862 ax-addrcl 10863 ax-mulcl 10864 ax-mulrcl 10865 ax-mulcom 10866 ax-addass 10867 ax-mulass 10868 ax-distr 10869 ax-i2m1 10870 ax-1ne0 10871 ax-1rid 10872 ax-rnegex 10873 ax-rrecex 10874 ax-cnre 10875 ax-pre-lttri 10876 ax-pre-lttrn 10877 ax-pre-ltadd 10878 ax-pre-mulgt0 10879 ax-pre-sup 10880 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 844 df-3or 1086 df-3an 1087 df-tru 1542 df-fal 1552 df-ex 1784 df-nf 1788 df-sb 2069 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2817 df-nfc 2888 df-ne 2943 df-nel 3049 df-ral 3068 df-rex 3069 df-reu 3070 df-rmo 3071 df-rab 3072 df-v 3424 df-sbc 3712 df-csb 3829 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-pss 3902 df-nul 4254 df-if 4457 df-pw 4532 df-sn 4559 df-pr 4561 df-tp 4563 df-op 4565 df-uni 4837 df-int 4877 df-iun 4923 df-br 5071 df-opab 5133 df-mpt 5154 df-tr 5188 df-id 5480 df-eprel 5486 df-po 5494 df-so 5495 df-fr 5535 df-se 5536 df-we 5537 df-xp 5586 df-rel 5587 df-cnv 5588 df-co 5589 df-dm 5590 df-rn 5591 df-res 5592 df-ima 5593 df-pred 6191 df-ord 6254 df-on 6255 df-lim 6256 df-suc 6257 df-iota 6376 df-fun 6420 df-fn 6421 df-f 6422 df-f1 6423 df-fo 6424 df-f1o 6425 df-fv 6426 df-isom 6427 df-riota 7212 df-ov 7258 df-oprab 7259 df-mpo 7260 df-om 7688 df-1st 7804 df-2nd 7805 df-frecs 8068 df-wrecs 8099 df-recs 8173 df-rdg 8212 df-1o 8267 df-er 8456 df-en 8692 df-dom 8693 df-sdom 8694 df-fin 8695 df-sup 9131 df-oi 9199 df-card 9628 df-pnf 10942 df-mnf 10943 df-xr 10944 df-ltxr 10945 df-le 10946 df-sub 11137 df-neg 11138 df-div 11563 df-nn 11904 df-2 11966 df-3 11967 df-n0 12164 df-z 12250 df-uz 12512 df-rp 12660 df-fz 13169 df-fzo 13312 df-seq 13650 df-exp 13711 df-hash 13973 df-cj 14738 df-re 14739 df-im 14740 df-sqrt 14874 df-abs 14875 df-clim 15125 df-sum 15326 |
This theorem is referenced by: isumnn0nn 15482 efsep 15747 rpnnen2lem9 15859 binomcxplemnotnn0 41863 |
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