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Mirrors > Home > MPE Home > Th. List > fsumshftm | Structured version Visualization version GIF version |
Description: Negative index shift of a finite sum. (Contributed by NM, 28-Nov-2005.) (Revised by Mario Carneiro, 24-Apr-2014.) |
Ref | Expression |
---|---|
fsumrev.1 | ⊢ (𝜑 → 𝐾 ∈ ℤ) |
fsumrev.2 | ⊢ (𝜑 → 𝑀 ∈ ℤ) |
fsumrev.3 | ⊢ (𝜑 → 𝑁 ∈ ℤ) |
fsumrev.4 | ⊢ ((𝜑 ∧ 𝑗 ∈ (𝑀...𝑁)) → 𝐴 ∈ ℂ) |
fsumshftm.5 | ⊢ (𝑗 = (𝑘 + 𝐾) → 𝐴 = 𝐵) |
Ref | Expression |
---|---|
fsumshftm | ⊢ (𝜑 → Σ𝑗 ∈ (𝑀...𝑁)𝐴 = Σ𝑘 ∈ ((𝑀 − 𝐾)...(𝑁 − 𝐾))𝐵) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | nfcv 2919 | . . 3 ⊢ Ⅎ𝑚𝐴 | |
2 | nfcsb1v 3829 | . . 3 ⊢ Ⅎ𝑗⦋𝑚 / 𝑗⦌𝐴 | |
3 | csbeq1a 3819 | . . 3 ⊢ (𝑗 = 𝑚 → 𝐴 = ⦋𝑚 / 𝑗⦌𝐴) | |
4 | 1, 2, 3 | cbvsumi 15102 | . 2 ⊢ Σ𝑗 ∈ (𝑀...𝑁)𝐴 = Σ𝑚 ∈ (𝑀...𝑁)⦋𝑚 / 𝑗⦌𝐴 |
5 | fsumrev.1 | . . . . 5 ⊢ (𝜑 → 𝐾 ∈ ℤ) | |
6 | 5 | znegcld 12128 | . . . 4 ⊢ (𝜑 → -𝐾 ∈ ℤ) |
7 | fsumrev.2 | . . . 4 ⊢ (𝜑 → 𝑀 ∈ ℤ) | |
8 | fsumrev.3 | . . . 4 ⊢ (𝜑 → 𝑁 ∈ ℤ) | |
9 | fsumrev.4 | . . . . . 6 ⊢ ((𝜑 ∧ 𝑗 ∈ (𝑀...𝑁)) → 𝐴 ∈ ℂ) | |
10 | 9 | ralrimiva 3113 | . . . . 5 ⊢ (𝜑 → ∀𝑗 ∈ (𝑀...𝑁)𝐴 ∈ ℂ) |
11 | 2 | nfel1 2935 | . . . . . 6 ⊢ Ⅎ𝑗⦋𝑚 / 𝑗⦌𝐴 ∈ ℂ |
12 | 3 | eleq1d 2836 | . . . . . 6 ⊢ (𝑗 = 𝑚 → (𝐴 ∈ ℂ ↔ ⦋𝑚 / 𝑗⦌𝐴 ∈ ℂ)) |
13 | 11, 12 | rspc 3529 | . . . . 5 ⊢ (𝑚 ∈ (𝑀...𝑁) → (∀𝑗 ∈ (𝑀...𝑁)𝐴 ∈ ℂ → ⦋𝑚 / 𝑗⦌𝐴 ∈ ℂ)) |
14 | 10, 13 | mpan9 510 | . . . 4 ⊢ ((𝜑 ∧ 𝑚 ∈ (𝑀...𝑁)) → ⦋𝑚 / 𝑗⦌𝐴 ∈ ℂ) |
15 | csbeq1 3808 | . . . 4 ⊢ (𝑚 = (𝑘 − -𝐾) → ⦋𝑚 / 𝑗⦌𝐴 = ⦋(𝑘 − -𝐾) / 𝑗⦌𝐴) | |
16 | 6, 7, 8, 14, 15 | fsumshft 15183 | . . 3 ⊢ (𝜑 → Σ𝑚 ∈ (𝑀...𝑁)⦋𝑚 / 𝑗⦌𝐴 = Σ𝑘 ∈ ((𝑀 + -𝐾)...(𝑁 + -𝐾))⦋(𝑘 − -𝐾) / 𝑗⦌𝐴) |
17 | 7 | zcnd 12127 | . . . . . 6 ⊢ (𝜑 → 𝑀 ∈ ℂ) |
18 | 5 | zcnd 12127 | . . . . . 6 ⊢ (𝜑 → 𝐾 ∈ ℂ) |
19 | 17, 18 | negsubd 11041 | . . . . 5 ⊢ (𝜑 → (𝑀 + -𝐾) = (𝑀 − 𝐾)) |
20 | 8 | zcnd 12127 | . . . . . 6 ⊢ (𝜑 → 𝑁 ∈ ℂ) |
21 | 20, 18 | negsubd 11041 | . . . . 5 ⊢ (𝜑 → (𝑁 + -𝐾) = (𝑁 − 𝐾)) |
22 | 19, 21 | oveq12d 7168 | . . . 4 ⊢ (𝜑 → ((𝑀 + -𝐾)...(𝑁 + -𝐾)) = ((𝑀 − 𝐾)...(𝑁 − 𝐾))) |
23 | 22 | sumeq1d 15106 | . . 3 ⊢ (𝜑 → Σ𝑘 ∈ ((𝑀 + -𝐾)...(𝑁 + -𝐾))⦋(𝑘 − -𝐾) / 𝑗⦌𝐴 = Σ𝑘 ∈ ((𝑀 − 𝐾)...(𝑁 − 𝐾))⦋(𝑘 − -𝐾) / 𝑗⦌𝐴) |
24 | elfzelz 12956 | . . . . . . . 8 ⊢ (𝑘 ∈ ((𝑀 − 𝐾)...(𝑁 − 𝐾)) → 𝑘 ∈ ℤ) | |
25 | 24 | zcnd 12127 | . . . . . . 7 ⊢ (𝑘 ∈ ((𝑀 − 𝐾)...(𝑁 − 𝐾)) → 𝑘 ∈ ℂ) |
26 | subneg 10973 | . . . . . . 7 ⊢ ((𝑘 ∈ ℂ ∧ 𝐾 ∈ ℂ) → (𝑘 − -𝐾) = (𝑘 + 𝐾)) | |
27 | 25, 18, 26 | syl2anr 599 | . . . . . 6 ⊢ ((𝜑 ∧ 𝑘 ∈ ((𝑀 − 𝐾)...(𝑁 − 𝐾))) → (𝑘 − -𝐾) = (𝑘 + 𝐾)) |
28 | 27 | csbeq1d 3809 | . . . . 5 ⊢ ((𝜑 ∧ 𝑘 ∈ ((𝑀 − 𝐾)...(𝑁 − 𝐾))) → ⦋(𝑘 − -𝐾) / 𝑗⦌𝐴 = ⦋(𝑘 + 𝐾) / 𝑗⦌𝐴) |
29 | ovex 7183 | . . . . . 6 ⊢ (𝑘 + 𝐾) ∈ V | |
30 | fsumshftm.5 | . . . . . 6 ⊢ (𝑗 = (𝑘 + 𝐾) → 𝐴 = 𝐵) | |
31 | 29, 30 | csbie 3840 | . . . . 5 ⊢ ⦋(𝑘 + 𝐾) / 𝑗⦌𝐴 = 𝐵 |
32 | 28, 31 | eqtrdi 2809 | . . . 4 ⊢ ((𝜑 ∧ 𝑘 ∈ ((𝑀 − 𝐾)...(𝑁 − 𝐾))) → ⦋(𝑘 − -𝐾) / 𝑗⦌𝐴 = 𝐵) |
33 | 32 | sumeq2dv 15108 | . . 3 ⊢ (𝜑 → Σ𝑘 ∈ ((𝑀 − 𝐾)...(𝑁 − 𝐾))⦋(𝑘 − -𝐾) / 𝑗⦌𝐴 = Σ𝑘 ∈ ((𝑀 − 𝐾)...(𝑁 − 𝐾))𝐵) |
34 | 16, 23, 33 | 3eqtrd 2797 | . 2 ⊢ (𝜑 → Σ𝑚 ∈ (𝑀...𝑁)⦋𝑚 / 𝑗⦌𝐴 = Σ𝑘 ∈ ((𝑀 − 𝐾)...(𝑁 − 𝐾))𝐵) |
35 | 4, 34 | syl5eq 2805 | 1 ⊢ (𝜑 → Σ𝑗 ∈ (𝑀...𝑁)𝐴 = Σ𝑘 ∈ ((𝑀 − 𝐾)...(𝑁 − 𝐾))𝐵) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 399 = wceq 1538 ∈ wcel 2111 ∀wral 3070 ⦋csb 3805 (class class class)co 7150 ℂcc 10573 + caddc 10578 − cmin 10908 -cneg 10909 ℤcz 12020 ...cfz 12939 Σcsu 15090 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2113 ax-9 2121 ax-10 2142 ax-11 2158 ax-12 2175 ax-ext 2729 ax-rep 5156 ax-sep 5169 ax-nul 5176 ax-pow 5234 ax-pr 5298 ax-un 7459 ax-inf2 9137 ax-cnex 10631 ax-resscn 10632 ax-1cn 10633 ax-icn 10634 ax-addcl 10635 ax-addrcl 10636 ax-mulcl 10637 ax-mulrcl 10638 ax-mulcom 10639 ax-addass 10640 ax-mulass 10641 ax-distr 10642 ax-i2m1 10643 ax-1ne0 10644 ax-1rid 10645 ax-rnegex 10646 ax-rrecex 10647 ax-cnre 10648 ax-pre-lttri 10649 ax-pre-lttrn 10650 ax-pre-ltadd 10651 ax-pre-mulgt0 10652 ax-pre-sup 10653 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 845 df-3or 1085 df-3an 1086 df-tru 1541 df-fal 1551 df-ex 1782 df-nf 1786 df-sb 2070 df-mo 2557 df-eu 2588 df-clab 2736 df-cleq 2750 df-clel 2830 df-nfc 2901 df-ne 2952 df-nel 3056 df-ral 3075 df-rex 3076 df-reu 3077 df-rmo 3078 df-rab 3079 df-v 3411 df-sbc 3697 df-csb 3806 df-dif 3861 df-un 3863 df-in 3865 df-ss 3875 df-pss 3877 df-nul 4226 df-if 4421 df-pw 4496 df-sn 4523 df-pr 4525 df-tp 4527 df-op 4529 df-uni 4799 df-int 4839 df-iun 4885 df-br 5033 df-opab 5095 df-mpt 5113 df-tr 5139 df-id 5430 df-eprel 5435 df-po 5443 df-so 5444 df-fr 5483 df-se 5484 df-we 5485 df-xp 5530 df-rel 5531 df-cnv 5532 df-co 5533 df-dm 5534 df-rn 5535 df-res 5536 df-ima 5537 df-pred 6126 df-ord 6172 df-on 6173 df-lim 6174 df-suc 6175 df-iota 6294 df-fun 6337 df-fn 6338 df-f 6339 df-f1 6340 df-fo 6341 df-f1o 6342 df-fv 6343 df-isom 6344 df-riota 7108 df-ov 7153 df-oprab 7154 df-mpo 7155 df-om 7580 df-1st 7693 df-2nd 7694 df-wrecs 7957 df-recs 8018 df-rdg 8056 df-1o 8112 df-er 8299 df-en 8528 df-dom 8529 df-sdom 8530 df-fin 8531 df-sup 8939 df-oi 9007 df-card 9401 df-pnf 10715 df-mnf 10716 df-xr 10717 df-ltxr 10718 df-le 10719 df-sub 10910 df-neg 10911 df-div 11336 df-nn 11675 df-2 11737 df-3 11738 df-n0 11935 df-z 12021 df-uz 12283 df-rp 12431 df-fz 12940 df-fzo 13083 df-seq 13419 df-exp 13480 df-hash 13741 df-cj 14506 df-re 14507 df-im 14508 df-sqrt 14642 df-abs 14643 df-clim 14893 df-sum 15091 |
This theorem is referenced by: telfsumo 15205 fsumparts 15209 arisum 15263 pwdif 15271 geo2sum 15277 ovolicc2lem4 24220 uniioombllem3 24285 dvply1 24979 pserdvlem2 25122 advlogexp 25345 dchrisumlem1 26172 pntpbnd2 26270 nn0sumshdiglemA 45398 nn0sumshdiglemB 45399 |
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