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| Mirrors > Home > MPE Home > Th. List > fsumshft | Structured version Visualization version GIF version | ||
| Description: Index shift of a finite sum. (Contributed by NM, 27-Nov-2005.) (Revised by Mario Carneiro, 24-Apr-2014.) (Proof shortened by AV, 8-Sep-2019.) |
| 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) |
| fsumshft.5 | ⊢ (𝑗 = (𝑘 − 𝐾) → 𝐴 = 𝐵) |
| Ref | Expression |
|---|---|
| fsumshft | ⊢ (𝜑 → Σ𝑗 ∈ (𝑀...𝑁)𝐴 = Σ𝑘 ∈ ((𝑀 + 𝐾)...(𝑁 + 𝐾))𝐵) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | fsumshft.5 | . 2 ⊢ (𝑗 = (𝑘 − 𝐾) → 𝐴 = 𝐵) | |
| 2 | fzfid 13880 | . 2 ⊢ (𝜑 → ((𝑀 + 𝐾)...(𝑁 + 𝐾)) ∈ Fin) | |
| 3 | fsumrev.1 | . . 3 ⊢ (𝜑 → 𝐾 ∈ ℤ) | |
| 4 | fsumrev.2 | . . 3 ⊢ (𝜑 → 𝑀 ∈ ℤ) | |
| 5 | fsumrev.3 | . . 3 ⊢ (𝜑 → 𝑁 ∈ ℤ) | |
| 6 | 3, 4, 5 | mptfzshft 15685 | . 2 ⊢ (𝜑 → (𝑗 ∈ ((𝑀 + 𝐾)...(𝑁 + 𝐾)) ↦ (𝑗 − 𝐾)):((𝑀 + 𝐾)...(𝑁 + 𝐾))–1-1-onto→(𝑀...𝑁)) |
| 7 | oveq1 7353 | . . . 4 ⊢ (𝑗 = 𝑘 → (𝑗 − 𝐾) = (𝑘 − 𝐾)) | |
| 8 | eqid 2731 | . . . 4 ⊢ (𝑗 ∈ ((𝑀 + 𝐾)...(𝑁 + 𝐾)) ↦ (𝑗 − 𝐾)) = (𝑗 ∈ ((𝑀 + 𝐾)...(𝑁 + 𝐾)) ↦ (𝑗 − 𝐾)) | |
| 9 | ovex 7379 | . . . 4 ⊢ (𝑘 − 𝐾) ∈ V | |
| 10 | 7, 8, 9 | fvmpt 6929 | . . 3 ⊢ (𝑘 ∈ ((𝑀 + 𝐾)...(𝑁 + 𝐾)) → ((𝑗 ∈ ((𝑀 + 𝐾)...(𝑁 + 𝐾)) ↦ (𝑗 − 𝐾))‘𝑘) = (𝑘 − 𝐾)) |
| 11 | 10 | adantl 481 | . 2 ⊢ ((𝜑 ∧ 𝑘 ∈ ((𝑀 + 𝐾)...(𝑁 + 𝐾))) → ((𝑗 ∈ ((𝑀 + 𝐾)...(𝑁 + 𝐾)) ↦ (𝑗 − 𝐾))‘𝑘) = (𝑘 − 𝐾)) |
| 12 | fsumrev.4 | . 2 ⊢ ((𝜑 ∧ 𝑗 ∈ (𝑀...𝑁)) → 𝐴 ∈ ℂ) | |
| 13 | 1, 2, 6, 11, 12 | fsumf1o 15630 | 1 ⊢ (𝜑 → Σ𝑗 ∈ (𝑀...𝑁)𝐴 = Σ𝑘 ∈ ((𝑀 + 𝐾)...(𝑁 + 𝐾))𝐵) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 395 = wceq 1541 ∈ wcel 2111 ↦ cmpt 5170 ‘cfv 6481 (class class class)co 7346 ℂcc 11004 + caddc 11009 − cmin 11344 ℤcz 12468 ...cfz 13407 Σcsu 15593 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2113 ax-9 2121 ax-10 2144 ax-11 2160 ax-12 2180 ax-ext 2703 ax-rep 5215 ax-sep 5232 ax-nul 5242 ax-pow 5301 ax-pr 5368 ax-un 7668 ax-inf2 9531 ax-cnex 11062 ax-resscn 11063 ax-1cn 11064 ax-icn 11065 ax-addcl 11066 ax-addrcl 11067 ax-mulcl 11068 ax-mulrcl 11069 ax-mulcom 11070 ax-addass 11071 ax-mulass 11072 ax-distr 11073 ax-i2m1 11074 ax-1ne0 11075 ax-1rid 11076 ax-rnegex 11077 ax-rrecex 11078 ax-cnre 11079 ax-pre-lttri 11080 ax-pre-lttrn 11081 ax-pre-ltadd 11082 ax-pre-mulgt0 11083 ax-pre-sup 11084 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-nf 1785 df-sb 2068 df-mo 2535 df-eu 2564 df-clab 2710 df-cleq 2723 df-clel 2806 df-nfc 2881 df-ne 2929 df-nel 3033 df-ral 3048 df-rex 3057 df-rmo 3346 df-reu 3347 df-rab 3396 df-v 3438 df-sbc 3737 df-csb 3846 df-dif 3900 df-un 3902 df-in 3904 df-ss 3914 df-pss 3917 df-nul 4281 df-if 4473 df-pw 4549 df-sn 4574 df-pr 4576 df-op 4580 df-uni 4857 df-int 4896 df-iun 4941 df-br 5090 df-opab 5152 df-mpt 5171 df-tr 5197 df-id 5509 df-eprel 5514 df-po 5522 df-so 5523 df-fr 5567 df-se 5568 df-we 5569 df-xp 5620 df-rel 5621 df-cnv 5622 df-co 5623 df-dm 5624 df-rn 5625 df-res 5626 df-ima 5627 df-pred 6248 df-ord 6309 df-on 6310 df-lim 6311 df-suc 6312 df-iota 6437 df-fun 6483 df-fn 6484 df-f 6485 df-f1 6486 df-fo 6487 df-f1o 6488 df-fv 6489 df-isom 6490 df-riota 7303 df-ov 7349 df-oprab 7350 df-mpo 7351 df-om 7797 df-1st 7921 df-2nd 7922 df-frecs 8211 df-wrecs 8242 df-recs 8291 df-rdg 8329 df-1o 8385 df-er 8622 df-en 8870 df-dom 8871 df-sdom 8872 df-fin 8873 df-sup 9326 df-oi 9396 df-card 9832 df-pnf 11148 df-mnf 11149 df-xr 11150 df-ltxr 11151 df-le 11152 df-sub 11346 df-neg 11347 df-div 11775 df-nn 12126 df-2 12188 df-3 12189 df-n0 12382 df-z 12469 df-uz 12733 df-rp 12891 df-fz 13408 df-fzo 13555 df-seq 13909 df-exp 13969 df-hash 14238 df-cj 15006 df-re 15007 df-im 15008 df-sqrt 15142 df-abs 15143 df-clim 15395 df-sum 15594 |
| This theorem is referenced by: fsumshftm 15688 binomlem 15736 binomfallfaclem2 15947 bpolydiflem 15961 pwp1fsum 16302 dvtaylp 26305 fsum2dsub 34620 fwddifnp1 36207 fsumshftd 38999 sticksstones10 42196 sticksstones12a 42198 dvnmul 45989 elaa2lem 46279 altgsumbcALT 48392 |
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