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Mirrors > Home > MPE Home > Th. List > telfsumo2 | Structured version Visualization version GIF version |
Description: Sum of a telescoping series. (Contributed by Mario Carneiro, 2-May-2016.) |
Ref | Expression |
---|---|
telfsumo.1 | ⊢ (𝑘 = 𝑗 → 𝐴 = 𝐵) |
telfsumo.2 | ⊢ (𝑘 = (𝑗 + 1) → 𝐴 = 𝐶) |
telfsumo.3 | ⊢ (𝑘 = 𝑀 → 𝐴 = 𝐷) |
telfsumo.4 | ⊢ (𝑘 = 𝑁 → 𝐴 = 𝐸) |
telfsumo.5 | ⊢ (𝜑 → 𝑁 ∈ (ℤ≥‘𝑀)) |
telfsumo.6 | ⊢ ((𝜑 ∧ 𝑘 ∈ (𝑀...𝑁)) → 𝐴 ∈ ℂ) |
Ref | Expression |
---|---|
telfsumo2 | ⊢ (𝜑 → Σ𝑗 ∈ (𝑀..^𝑁)(𝐶 − 𝐵) = (𝐸 − 𝐷)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | telfsumo.1 | . . . 4 ⊢ (𝑘 = 𝑗 → 𝐴 = 𝐵) | |
2 | 1 | negeqd 11145 | . . 3 ⊢ (𝑘 = 𝑗 → -𝐴 = -𝐵) |
3 | telfsumo.2 | . . . 4 ⊢ (𝑘 = (𝑗 + 1) → 𝐴 = 𝐶) | |
4 | 3 | negeqd 11145 | . . 3 ⊢ (𝑘 = (𝑗 + 1) → -𝐴 = -𝐶) |
5 | telfsumo.3 | . . . 4 ⊢ (𝑘 = 𝑀 → 𝐴 = 𝐷) | |
6 | 5 | negeqd 11145 | . . 3 ⊢ (𝑘 = 𝑀 → -𝐴 = -𝐷) |
7 | telfsumo.4 | . . . 4 ⊢ (𝑘 = 𝑁 → 𝐴 = 𝐸) | |
8 | 7 | negeqd 11145 | . . 3 ⊢ (𝑘 = 𝑁 → -𝐴 = -𝐸) |
9 | telfsumo.5 | . . 3 ⊢ (𝜑 → 𝑁 ∈ (ℤ≥‘𝑀)) | |
10 | telfsumo.6 | . . . 4 ⊢ ((𝜑 ∧ 𝑘 ∈ (𝑀...𝑁)) → 𝐴 ∈ ℂ) | |
11 | 10 | negcld 11249 | . . 3 ⊢ ((𝜑 ∧ 𝑘 ∈ (𝑀...𝑁)) → -𝐴 ∈ ℂ) |
12 | 2, 4, 6, 8, 9, 11 | telfsumo 15442 | . 2 ⊢ (𝜑 → Σ𝑗 ∈ (𝑀..^𝑁)(-𝐵 − -𝐶) = (-𝐷 − -𝐸)) |
13 | 10 | ralrimiva 3107 | . . . . 5 ⊢ (𝜑 → ∀𝑘 ∈ (𝑀...𝑁)𝐴 ∈ ℂ) |
14 | elfzofz 13331 | . . . . 5 ⊢ (𝑗 ∈ (𝑀..^𝑁) → 𝑗 ∈ (𝑀...𝑁)) | |
15 | 1 | eleq1d 2823 | . . . . . 6 ⊢ (𝑘 = 𝑗 → (𝐴 ∈ ℂ ↔ 𝐵 ∈ ℂ)) |
16 | 15 | rspccva 3551 | . . . . 5 ⊢ ((∀𝑘 ∈ (𝑀...𝑁)𝐴 ∈ ℂ ∧ 𝑗 ∈ (𝑀...𝑁)) → 𝐵 ∈ ℂ) |
17 | 13, 14, 16 | syl2an 595 | . . . 4 ⊢ ((𝜑 ∧ 𝑗 ∈ (𝑀..^𝑁)) → 𝐵 ∈ ℂ) |
18 | fzofzp1 13412 | . . . . 5 ⊢ (𝑗 ∈ (𝑀..^𝑁) → (𝑗 + 1) ∈ (𝑀...𝑁)) | |
19 | 3 | eleq1d 2823 | . . . . . 6 ⊢ (𝑘 = (𝑗 + 1) → (𝐴 ∈ ℂ ↔ 𝐶 ∈ ℂ)) |
20 | 19 | rspccva 3551 | . . . . 5 ⊢ ((∀𝑘 ∈ (𝑀...𝑁)𝐴 ∈ ℂ ∧ (𝑗 + 1) ∈ (𝑀...𝑁)) → 𝐶 ∈ ℂ) |
21 | 13, 18, 20 | syl2an 595 | . . . 4 ⊢ ((𝜑 ∧ 𝑗 ∈ (𝑀..^𝑁)) → 𝐶 ∈ ℂ) |
22 | 17, 21 | neg2subd 11279 | . . 3 ⊢ ((𝜑 ∧ 𝑗 ∈ (𝑀..^𝑁)) → (-𝐵 − -𝐶) = (𝐶 − 𝐵)) |
23 | 22 | sumeq2dv 15343 | . 2 ⊢ (𝜑 → Σ𝑗 ∈ (𝑀..^𝑁)(-𝐵 − -𝐶) = Σ𝑗 ∈ (𝑀..^𝑁)(𝐶 − 𝐵)) |
24 | 5 | eleq1d 2823 | . . . 4 ⊢ (𝑘 = 𝑀 → (𝐴 ∈ ℂ ↔ 𝐷 ∈ ℂ)) |
25 | eluzfz1 13192 | . . . . 5 ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → 𝑀 ∈ (𝑀...𝑁)) | |
26 | 9, 25 | syl 17 | . . . 4 ⊢ (𝜑 → 𝑀 ∈ (𝑀...𝑁)) |
27 | 24, 13, 26 | rspcdva 3554 | . . 3 ⊢ (𝜑 → 𝐷 ∈ ℂ) |
28 | 7 | eleq1d 2823 | . . . 4 ⊢ (𝑘 = 𝑁 → (𝐴 ∈ ℂ ↔ 𝐸 ∈ ℂ)) |
29 | eluzfz2 13193 | . . . . 5 ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → 𝑁 ∈ (𝑀...𝑁)) | |
30 | 9, 29 | syl 17 | . . . 4 ⊢ (𝜑 → 𝑁 ∈ (𝑀...𝑁)) |
31 | 28, 13, 30 | rspcdva 3554 | . . 3 ⊢ (𝜑 → 𝐸 ∈ ℂ) |
32 | 27, 31 | neg2subd 11279 | . 2 ⊢ (𝜑 → (-𝐷 − -𝐸) = (𝐸 − 𝐷)) |
33 | 12, 23, 32 | 3eqtr3d 2786 | 1 ⊢ (𝜑 → Σ𝑗 ∈ (𝑀..^𝑁)(𝐶 − 𝐵) = (𝐸 − 𝐷)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 395 = wceq 1539 ∈ wcel 2108 ∀wral 3063 ‘cfv 6418 (class class class)co 7255 ℂcc 10800 1c1 10803 + caddc 10805 − cmin 11135 -cneg 11136 ℤ≥cuz 12511 ...cfz 13168 ..^cfzo 13311 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: telfsum2 15445 dvfsumle 25090 dvfsumabs 25092 advlogexp 25715 |
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