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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 11161 | . . 3 ⊢ (𝑘 = 𝑗 → -𝐴 = -𝐵) |
3 | telfsumo.2 | . . . 4 ⊢ (𝑘 = (𝑗 + 1) → 𝐴 = 𝐶) | |
4 | 3 | negeqd 11161 | . . 3 ⊢ (𝑘 = (𝑗 + 1) → -𝐴 = -𝐶) |
5 | telfsumo.3 | . . . 4 ⊢ (𝑘 = 𝑀 → 𝐴 = 𝐷) | |
6 | 5 | negeqd 11161 | . . 3 ⊢ (𝑘 = 𝑀 → -𝐴 = -𝐷) |
7 | telfsumo.4 | . . . 4 ⊢ (𝑘 = 𝑁 → 𝐴 = 𝐸) | |
8 | 7 | negeqd 11161 | . . 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 11265 | . . 3 ⊢ ((𝜑 ∧ 𝑘 ∈ (𝑀...𝑁)) → -𝐴 ∈ ℂ) |
12 | 2, 4, 6, 8, 9, 11 | telfsumo 15458 | . 2 ⊢ (𝜑 → Σ𝑗 ∈ (𝑀..^𝑁)(-𝐵 − -𝐶) = (-𝐷 − -𝐸)) |
13 | 10 | ralrimiva 3106 | . . . . 5 ⊢ (𝜑 → ∀𝑘 ∈ (𝑀...𝑁)𝐴 ∈ ℂ) |
14 | elfzofz 13347 | . . . . 5 ⊢ (𝑗 ∈ (𝑀..^𝑁) → 𝑗 ∈ (𝑀...𝑁)) | |
15 | 1 | eleq1d 2821 | . . . . . 6 ⊢ (𝑘 = 𝑗 → (𝐴 ∈ ℂ ↔ 𝐵 ∈ ℂ)) |
16 | 15 | rspccva 3556 | . . . . 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 13428 | . . . . 5 ⊢ (𝑗 ∈ (𝑀..^𝑁) → (𝑗 + 1) ∈ (𝑀...𝑁)) | |
19 | 3 | eleq1d 2821 | . . . . . 6 ⊢ (𝑘 = (𝑗 + 1) → (𝐴 ∈ ℂ ↔ 𝐶 ∈ ℂ)) |
20 | 19 | rspccva 3556 | . . . . 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 11295 | . . 3 ⊢ ((𝜑 ∧ 𝑗 ∈ (𝑀..^𝑁)) → (-𝐵 − -𝐶) = (𝐶 − 𝐵)) |
23 | 22 | sumeq2dv 15359 | . 2 ⊢ (𝜑 → Σ𝑗 ∈ (𝑀..^𝑁)(-𝐵 − -𝐶) = Σ𝑗 ∈ (𝑀..^𝑁)(𝐶 − 𝐵)) |
24 | 5 | eleq1d 2821 | . . . 4 ⊢ (𝑘 = 𝑀 → (𝐴 ∈ ℂ ↔ 𝐷 ∈ ℂ)) |
25 | eluzfz1 13208 | . . . . 5 ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → 𝑀 ∈ (𝑀...𝑁)) | |
26 | 9, 25 | syl 17 | . . . 4 ⊢ (𝜑 → 𝑀 ∈ (𝑀...𝑁)) |
27 | 24, 13, 26 | rspcdva 3559 | . . 3 ⊢ (𝜑 → 𝐷 ∈ ℂ) |
28 | 7 | eleq1d 2821 | . . . 4 ⊢ (𝑘 = 𝑁 → (𝐴 ∈ ℂ ↔ 𝐸 ∈ ℂ)) |
29 | eluzfz2 13209 | . . . . 5 ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → 𝑁 ∈ (𝑀...𝑁)) | |
30 | 9, 29 | syl 17 | . . . 4 ⊢ (𝜑 → 𝑁 ∈ (𝑀...𝑁)) |
31 | 28, 13, 30 | rspcdva 3559 | . . 3 ⊢ (𝜑 → 𝐸 ∈ ℂ) |
32 | 27, 31 | neg2subd 11295 | . 2 ⊢ (𝜑 → (-𝐷 − -𝐸) = (𝐸 − 𝐷)) |
33 | 12, 23, 32 | 3eqtr3d 2785 | 1 ⊢ (𝜑 → Σ𝑗 ∈ (𝑀..^𝑁)(𝐶 − 𝐵) = (𝐸 − 𝐷)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 395 = wceq 1539 ∈ wcel 2107 ∀wral 3062 ‘cfv 6423 (class class class)co 7260 ℂcc 10816 1c1 10819 + caddc 10821 − cmin 11151 -cneg 11152 ℤ≥cuz 12527 ...cfz 13184 ..^cfzo 13327 Σcsu 15341 |
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 2109 ax-9 2117 ax-10 2138 ax-11 2155 ax-12 2172 ax-ext 2708 ax-rep 5210 ax-sep 5223 ax-nul 5230 ax-pow 5288 ax-pr 5352 ax-un 7571 ax-inf2 9345 ax-cnex 10874 ax-resscn 10875 ax-1cn 10876 ax-icn 10877 ax-addcl 10878 ax-addrcl 10879 ax-mulcl 10880 ax-mulrcl 10881 ax-mulcom 10882 ax-addass 10883 ax-mulass 10884 ax-distr 10885 ax-i2m1 10886 ax-1ne0 10887 ax-1rid 10888 ax-rnegex 10889 ax-rrecex 10890 ax-cnre 10891 ax-pre-lttri 10892 ax-pre-lttrn 10893 ax-pre-ltadd 10894 ax-pre-mulgt0 10895 ax-pre-sup 10896 |
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 2539 df-eu 2568 df-clab 2715 df-cleq 2729 df-clel 2815 df-nfc 2887 df-ne 2942 df-nel 3048 df-ral 3067 df-rex 3068 df-reu 3069 df-rmo 3070 df-rab 3071 df-v 3429 df-sbc 3717 df-csb 3834 df-dif 3891 df-un 3893 df-in 3895 df-ss 3905 df-pss 3907 df-nul 4259 df-if 4462 df-pw 4537 df-sn 4564 df-pr 4566 df-tp 4568 df-op 4570 df-uni 4842 df-int 4882 df-iun 4928 df-br 5076 df-opab 5138 df-mpt 5159 df-tr 5193 df-id 5485 df-eprel 5491 df-po 5499 df-so 5500 df-fr 5540 df-se 5541 df-we 5542 df-xp 5591 df-rel 5592 df-cnv 5593 df-co 5594 df-dm 5595 df-rn 5596 df-res 5597 df-ima 5598 df-pred 6196 df-ord 6259 df-on 6260 df-lim 6261 df-suc 6262 df-iota 6381 df-fun 6425 df-fn 6426 df-f 6427 df-f1 6428 df-fo 6429 df-f1o 6430 df-fv 6431 df-isom 6432 df-riota 7217 df-ov 7263 df-oprab 7264 df-mpo 7265 df-om 7693 df-1st 7809 df-2nd 7810 df-frecs 8073 df-wrecs 8104 df-recs 8178 df-rdg 8217 df-1o 8272 df-er 8461 df-en 8697 df-dom 8698 df-sdom 8699 df-fin 8700 df-sup 9147 df-oi 9215 df-card 9644 df-pnf 10958 df-mnf 10959 df-xr 10960 df-ltxr 10961 df-le 10962 df-sub 11153 df-neg 11154 df-div 11579 df-nn 11920 df-2 11982 df-3 11983 df-n0 12180 df-z 12266 df-uz 12528 df-rp 12676 df-fz 13185 df-fzo 13328 df-seq 13666 df-exp 13727 df-hash 13989 df-cj 14754 df-re 14755 df-im 14756 df-sqrt 14890 df-abs 14891 df-clim 15141 df-sum 15342 |
This theorem is referenced by: telfsum2 15461 dvfsumle 25128 dvfsumabs 25130 advlogexp 25753 |
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