Mathbox for Glauco Siliprandi |
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Mirrors > Home > MPE Home > Th. List > Mathboxes > fsumsplit1 | Structured version Visualization version GIF version |
Description: Separate out a term in a finite sum. (Contributed by Glauco Siliprandi, 5-Apr-2020.) |
Ref | Expression |
---|---|
fsumsplit1.kph | ⊢ Ⅎ𝑘𝜑 |
fsumsplit1.kd | ⊢ Ⅎ𝑘𝐷 |
fsumsplit1.a | ⊢ (𝜑 → 𝐴 ∈ Fin) |
fsumsplit1.b | ⊢ ((𝜑 ∧ 𝑘 ∈ 𝐴) → 𝐵 ∈ ℂ) |
fsumsplit1.c | ⊢ (𝜑 → 𝐶 ∈ 𝐴) |
fsumsplit1.bd | ⊢ (𝑘 = 𝐶 → 𝐵 = 𝐷) |
Ref | Expression |
---|---|
fsumsplit1 | ⊢ (𝜑 → Σ𝑘 ∈ 𝐴 𝐵 = (𝐷 + Σ𝑘 ∈ (𝐴 ∖ {𝐶})𝐵)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | uncom 3757 | . . . . 5 ⊢ ((𝐴 ∖ {𝐶}) ∪ {𝐶}) = ({𝐶} ∪ (𝐴 ∖ {𝐶})) | |
2 | 1 | a1i 11 | . . . 4 ⊢ (𝜑 → ((𝐴 ∖ {𝐶}) ∪ {𝐶}) = ({𝐶} ∪ (𝐴 ∖ {𝐶}))) |
3 | fsumsplit1.c | . . . . . 6 ⊢ (𝜑 → 𝐶 ∈ 𝐴) | |
4 | 3 | snssd 4340 | . . . . 5 ⊢ (𝜑 → {𝐶} ⊆ 𝐴) |
5 | undif 4049 | . . . . 5 ⊢ ({𝐶} ⊆ 𝐴 ↔ ({𝐶} ∪ (𝐴 ∖ {𝐶})) = 𝐴) | |
6 | 4, 5 | sylib 208 | . . . 4 ⊢ (𝜑 → ({𝐶} ∪ (𝐴 ∖ {𝐶})) = 𝐴) |
7 | eqidd 2623 | . . . 4 ⊢ (𝜑 → 𝐴 = 𝐴) | |
8 | 2, 6, 7 | 3eqtrrd 2661 | . . 3 ⊢ (𝜑 → 𝐴 = ((𝐴 ∖ {𝐶}) ∪ {𝐶})) |
9 | 8 | sumeq1d 14431 | . 2 ⊢ (𝜑 → Σ𝑘 ∈ 𝐴 𝐵 = Σ𝑘 ∈ ((𝐴 ∖ {𝐶}) ∪ {𝐶})𝐵) |
10 | fsumsplit1.kph | . . 3 ⊢ Ⅎ𝑘𝜑 | |
11 | fsumsplit1.kd | . . 3 ⊢ Ⅎ𝑘𝐷 | |
12 | fsumsplit1.a | . . . 4 ⊢ (𝜑 → 𝐴 ∈ Fin) | |
13 | diffi 8192 | . . . 4 ⊢ (𝐴 ∈ Fin → (𝐴 ∖ {𝐶}) ∈ Fin) | |
14 | 12, 13 | syl 17 | . . 3 ⊢ (𝜑 → (𝐴 ∖ {𝐶}) ∈ Fin) |
15 | neldifsnd 4322 | . . 3 ⊢ (𝜑 → ¬ 𝐶 ∈ (𝐴 ∖ {𝐶})) | |
16 | simpl 473 | . . . 4 ⊢ ((𝜑 ∧ 𝑘 ∈ (𝐴 ∖ {𝐶})) → 𝜑) | |
17 | eldifi 3732 | . . . . 5 ⊢ (𝑘 ∈ (𝐴 ∖ {𝐶}) → 𝑘 ∈ 𝐴) | |
18 | 17 | adantl 482 | . . . 4 ⊢ ((𝜑 ∧ 𝑘 ∈ (𝐴 ∖ {𝐶})) → 𝑘 ∈ 𝐴) |
19 | fsumsplit1.b | . . . 4 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝐴) → 𝐵 ∈ ℂ) | |
20 | 16, 18, 19 | syl2anc 693 | . . 3 ⊢ ((𝜑 ∧ 𝑘 ∈ (𝐴 ∖ {𝐶})) → 𝐵 ∈ ℂ) |
21 | fsumsplit1.bd | . . 3 ⊢ (𝑘 = 𝐶 → 𝐵 = 𝐷) | |
22 | 11 | a1i 11 | . . . . . 6 ⊢ (𝜑 → Ⅎ𝑘𝐷) |
23 | simpr 477 | . . . . . . 7 ⊢ ((𝜑 ∧ 𝑘 = 𝐶) → 𝑘 = 𝐶) | |
24 | 23, 21 | syl 17 | . . . . . 6 ⊢ ((𝜑 ∧ 𝑘 = 𝐶) → 𝐵 = 𝐷) |
25 | 10, 22, 3, 24 | csbiedf 3554 | . . . . 5 ⊢ (𝜑 → ⦋𝐶 / 𝑘⦌𝐵 = 𝐷) |
26 | 25 | eqcomd 2628 | . . . 4 ⊢ (𝜑 → 𝐷 = ⦋𝐶 / 𝑘⦌𝐵) |
27 | 3 | ancli 574 | . . . . 5 ⊢ (𝜑 → (𝜑 ∧ 𝐶 ∈ 𝐴)) |
28 | nfcv 2764 | . . . . . 6 ⊢ Ⅎ𝑘𝐶 | |
29 | nfv 1843 | . . . . . . . 8 ⊢ Ⅎ𝑘 𝐶 ∈ 𝐴 | |
30 | 10, 29 | nfan 1828 | . . . . . . 7 ⊢ Ⅎ𝑘(𝜑 ∧ 𝐶 ∈ 𝐴) |
31 | 28 | nfcsb1 3548 | . . . . . . . 8 ⊢ Ⅎ𝑘⦋𝐶 / 𝑘⦌𝐵 |
32 | nfcv 2764 | . . . . . . . 8 ⊢ Ⅎ𝑘ℂ | |
33 | 31, 32 | nfel 2777 | . . . . . . 7 ⊢ Ⅎ𝑘⦋𝐶 / 𝑘⦌𝐵 ∈ ℂ |
34 | 30, 33 | nfim 1825 | . . . . . 6 ⊢ Ⅎ𝑘((𝜑 ∧ 𝐶 ∈ 𝐴) → ⦋𝐶 / 𝑘⦌𝐵 ∈ ℂ) |
35 | eleq1 2689 | . . . . . . . 8 ⊢ (𝑘 = 𝐶 → (𝑘 ∈ 𝐴 ↔ 𝐶 ∈ 𝐴)) | |
36 | 35 | anbi2d 740 | . . . . . . 7 ⊢ (𝑘 = 𝐶 → ((𝜑 ∧ 𝑘 ∈ 𝐴) ↔ (𝜑 ∧ 𝐶 ∈ 𝐴))) |
37 | csbeq1a 3542 | . . . . . . . 8 ⊢ (𝑘 = 𝐶 → 𝐵 = ⦋𝐶 / 𝑘⦌𝐵) | |
38 | 37 | eleq1d 2686 | . . . . . . 7 ⊢ (𝑘 = 𝐶 → (𝐵 ∈ ℂ ↔ ⦋𝐶 / 𝑘⦌𝐵 ∈ ℂ)) |
39 | 36, 38 | imbi12d 334 | . . . . . 6 ⊢ (𝑘 = 𝐶 → (((𝜑 ∧ 𝑘 ∈ 𝐴) → 𝐵 ∈ ℂ) ↔ ((𝜑 ∧ 𝐶 ∈ 𝐴) → ⦋𝐶 / 𝑘⦌𝐵 ∈ ℂ))) |
40 | 28, 34, 39, 19 | vtoclgf 3264 | . . . . 5 ⊢ (𝐶 ∈ 𝐴 → ((𝜑 ∧ 𝐶 ∈ 𝐴) → ⦋𝐶 / 𝑘⦌𝐵 ∈ ℂ)) |
41 | 3, 27, 40 | sylc 65 | . . . 4 ⊢ (𝜑 → ⦋𝐶 / 𝑘⦌𝐵 ∈ ℂ) |
42 | 26, 41 | eqeltrd 2701 | . . 3 ⊢ (𝜑 → 𝐷 ∈ ℂ) |
43 | 10, 11, 14, 3, 15, 20, 21, 42 | fsumsplitsn 14474 | . 2 ⊢ (𝜑 → Σ𝑘 ∈ ((𝐴 ∖ {𝐶}) ∪ {𝐶})𝐵 = (Σ𝑘 ∈ (𝐴 ∖ {𝐶})𝐵 + 𝐷)) |
44 | 10, 14, 20 | fsumclf 39801 | . . 3 ⊢ (𝜑 → Σ𝑘 ∈ (𝐴 ∖ {𝐶})𝐵 ∈ ℂ) |
45 | 44, 42 | addcomd 10238 | . 2 ⊢ (𝜑 → (Σ𝑘 ∈ (𝐴 ∖ {𝐶})𝐵 + 𝐷) = (𝐷 + Σ𝑘 ∈ (𝐴 ∖ {𝐶})𝐵)) |
46 | 9, 43, 45 | 3eqtrd 2660 | 1 ⊢ (𝜑 → Σ𝑘 ∈ 𝐴 𝐵 = (𝐷 + Σ𝑘 ∈ (𝐴 ∖ {𝐶})𝐵)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 384 = wceq 1483 Ⅎwnf 1708 ∈ wcel 1990 Ⅎwnfc 2751 ⦋csb 3533 ∖ cdif 3571 ∪ cun 3572 ⊆ wss 3574 {csn 4177 (class class class)co 6650 Fincfn 7955 ℂcc 9934 + caddc 9939 Σcsu 14416 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1722 ax-4 1737 ax-5 1839 ax-6 1888 ax-7 1935 ax-8 1992 ax-9 1999 ax-10 2019 ax-11 2034 ax-12 2047 ax-13 2246 ax-ext 2602 ax-rep 4771 ax-sep 4781 ax-nul 4789 ax-pow 4843 ax-pr 4906 ax-un 6949 ax-inf2 8538 ax-cnex 9992 ax-resscn 9993 ax-1cn 9994 ax-icn 9995 ax-addcl 9996 ax-addrcl 9997 ax-mulcl 9998 ax-mulrcl 9999 ax-mulcom 10000 ax-addass 10001 ax-mulass 10002 ax-distr 10003 ax-i2m1 10004 ax-1ne0 10005 ax-1rid 10006 ax-rnegex 10007 ax-rrecex 10008 ax-cnre 10009 ax-pre-lttri 10010 ax-pre-lttrn 10011 ax-pre-ltadd 10012 ax-pre-mulgt0 10013 ax-pre-sup 10014 |
This theorem depends on definitions: df-bi 197 df-or 385 df-an 386 df-3or 1038 df-3an 1039 df-tru 1486 df-fal 1489 df-ex 1705 df-nf 1710 df-sb 1881 df-eu 2474 df-mo 2475 df-clab 2609 df-cleq 2615 df-clel 2618 df-nfc 2753 df-ne 2795 df-nel 2898 df-ral 2917 df-rex 2918 df-reu 2919 df-rmo 2920 df-rab 2921 df-v 3202 df-sbc 3436 df-csb 3534 df-dif 3577 df-un 3579 df-in 3581 df-ss 3588 df-pss 3590 df-nul 3916 df-if 4087 df-pw 4160 df-sn 4178 df-pr 4180 df-tp 4182 df-op 4184 df-uni 4437 df-int 4476 df-iun 4522 df-br 4654 df-opab 4713 df-mpt 4730 df-tr 4753 df-id 5024 df-eprel 5029 df-po 5035 df-so 5036 df-fr 5073 df-se 5074 df-we 5075 df-xp 5120 df-rel 5121 df-cnv 5122 df-co 5123 df-dm 5124 df-rn 5125 df-res 5126 df-ima 5127 df-pred 5680 df-ord 5726 df-on 5727 df-lim 5728 df-suc 5729 df-iota 5851 df-fun 5890 df-fn 5891 df-f 5892 df-f1 5893 df-fo 5894 df-f1o 5895 df-fv 5896 df-isom 5897 df-riota 6611 df-ov 6653 df-oprab 6654 df-mpt2 6655 df-om 7066 df-1st 7168 df-2nd 7169 df-wrecs 7407 df-recs 7468 df-rdg 7506 df-1o 7560 df-oadd 7564 df-er 7742 df-en 7956 df-dom 7957 df-sdom 7958 df-fin 7959 df-sup 8348 df-oi 8415 df-card 8765 df-pnf 10076 df-mnf 10077 df-xr 10078 df-ltxr 10079 df-le 10080 df-sub 10268 df-neg 10269 df-div 10685 df-nn 11021 df-2 11079 df-3 11080 df-n0 11293 df-z 11378 df-uz 11688 df-rp 11833 df-fz 12327 df-fzo 12466 df-seq 12802 df-exp 12861 df-hash 13118 df-cj 13839 df-re 13840 df-im 13841 df-sqrt 13975 df-abs 13976 df-clim 14219 df-sum 14417 |
This theorem is referenced by: dvnmul 40158 etransclem35 40486 etransclem44 40495 |
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