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Mirrors > Home > MPE Home > Th. List > sumpr | Structured version Visualization version GIF version |
Description: A sum over a pair is the sum of the elements. (Contributed by Thierry Arnoux, 12-Dec-2016.) |
Ref | Expression |
---|---|
sumpr.1 | ⊢ (𝑘 = 𝐴 → 𝐶 = 𝐷) |
sumpr.2 | ⊢ (𝑘 = 𝐵 → 𝐶 = 𝐸) |
sumpr.3 | ⊢ (𝜑 → (𝐷 ∈ ℂ ∧ 𝐸 ∈ ℂ)) |
sumpr.4 | ⊢ (𝜑 → (𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊)) |
sumpr.5 | ⊢ (𝜑 → 𝐴 ≠ 𝐵) |
Ref | Expression |
---|---|
sumpr | ⊢ (𝜑 → Σ𝑘 ∈ {𝐴, 𝐵}𝐶 = (𝐷 + 𝐸)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | sumpr.5 | . . . 4 ⊢ (𝜑 → 𝐴 ≠ 𝐵) | |
2 | disjsn2 4628 | . . . 4 ⊢ (𝐴 ≠ 𝐵 → ({𝐴} ∩ {𝐵}) = ∅) | |
3 | 1, 2 | syl 17 | . . 3 ⊢ (𝜑 → ({𝐴} ∩ {𝐵}) = ∅) |
4 | df-pr 4544 | . . . 4 ⊢ {𝐴, 𝐵} = ({𝐴} ∪ {𝐵}) | |
5 | 4 | a1i 11 | . . 3 ⊢ (𝜑 → {𝐴, 𝐵} = ({𝐴} ∪ {𝐵})) |
6 | prfi 8946 | . . . 4 ⊢ {𝐴, 𝐵} ∈ Fin | |
7 | 6 | a1i 11 | . . 3 ⊢ (𝜑 → {𝐴, 𝐵} ∈ Fin) |
8 | sumpr.3 | . . . . 5 ⊢ (𝜑 → (𝐷 ∈ ℂ ∧ 𝐸 ∈ ℂ)) | |
9 | sumpr.4 | . . . . . 6 ⊢ (𝜑 → (𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊)) | |
10 | sumpr.1 | . . . . . . . 8 ⊢ (𝑘 = 𝐴 → 𝐶 = 𝐷) | |
11 | 10 | eleq1d 2822 | . . . . . . 7 ⊢ (𝑘 = 𝐴 → (𝐶 ∈ ℂ ↔ 𝐷 ∈ ℂ)) |
12 | sumpr.2 | . . . . . . . 8 ⊢ (𝑘 = 𝐵 → 𝐶 = 𝐸) | |
13 | 12 | eleq1d 2822 | . . . . . . 7 ⊢ (𝑘 = 𝐵 → (𝐶 ∈ ℂ ↔ 𝐸 ∈ ℂ)) |
14 | 11, 13 | ralprg 4610 | . . . . . 6 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → (∀𝑘 ∈ {𝐴, 𝐵}𝐶 ∈ ℂ ↔ (𝐷 ∈ ℂ ∧ 𝐸 ∈ ℂ))) |
15 | 9, 14 | syl 17 | . . . . 5 ⊢ (𝜑 → (∀𝑘 ∈ {𝐴, 𝐵}𝐶 ∈ ℂ ↔ (𝐷 ∈ ℂ ∧ 𝐸 ∈ ℂ))) |
16 | 8, 15 | mpbird 260 | . . . 4 ⊢ (𝜑 → ∀𝑘 ∈ {𝐴, 𝐵}𝐶 ∈ ℂ) |
17 | 16 | r19.21bi 3130 | . . 3 ⊢ ((𝜑 ∧ 𝑘 ∈ {𝐴, 𝐵}) → 𝐶 ∈ ℂ) |
18 | 3, 5, 7, 17 | fsumsplit 15305 | . 2 ⊢ (𝜑 → Σ𝑘 ∈ {𝐴, 𝐵}𝐶 = (Σ𝑘 ∈ {𝐴}𝐶 + Σ𝑘 ∈ {𝐵}𝐶)) |
19 | 9 | simpld 498 | . . . 4 ⊢ (𝜑 → 𝐴 ∈ 𝑉) |
20 | 8 | simpld 498 | . . . 4 ⊢ (𝜑 → 𝐷 ∈ ℂ) |
21 | 10 | sumsn 15310 | . . . 4 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐷 ∈ ℂ) → Σ𝑘 ∈ {𝐴}𝐶 = 𝐷) |
22 | 19, 20, 21 | syl2anc 587 | . . 3 ⊢ (𝜑 → Σ𝑘 ∈ {𝐴}𝐶 = 𝐷) |
23 | 9 | simprd 499 | . . . 4 ⊢ (𝜑 → 𝐵 ∈ 𝑊) |
24 | 8 | simprd 499 | . . . 4 ⊢ (𝜑 → 𝐸 ∈ ℂ) |
25 | 12 | sumsn 15310 | . . . 4 ⊢ ((𝐵 ∈ 𝑊 ∧ 𝐸 ∈ ℂ) → Σ𝑘 ∈ {𝐵}𝐶 = 𝐸) |
26 | 23, 24, 25 | syl2anc 587 | . . 3 ⊢ (𝜑 → Σ𝑘 ∈ {𝐵}𝐶 = 𝐸) |
27 | 22, 26 | oveq12d 7231 | . 2 ⊢ (𝜑 → (Σ𝑘 ∈ {𝐴}𝐶 + Σ𝑘 ∈ {𝐵}𝐶) = (𝐷 + 𝐸)) |
28 | 18, 27 | eqtrd 2777 | 1 ⊢ (𝜑 → Σ𝑘 ∈ {𝐴, 𝐵}𝐶 = (𝐷 + 𝐸)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 209 ∧ wa 399 = wceq 1543 ∈ wcel 2110 ≠ wne 2940 ∀wral 3061 ∪ cun 3864 ∩ cin 3865 ∅c0 4237 {csn 4541 {cpr 4543 (class class class)co 7213 Fincfn 8626 ℂcc 10727 + caddc 10732 Σcsu 15249 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1803 ax-4 1817 ax-5 1918 ax-6 1976 ax-7 2016 ax-8 2112 ax-9 2120 ax-10 2141 ax-11 2158 ax-12 2175 ax-ext 2708 ax-rep 5179 ax-sep 5192 ax-nul 5199 ax-pow 5258 ax-pr 5322 ax-un 7523 ax-inf2 9256 ax-cnex 10785 ax-resscn 10786 ax-1cn 10787 ax-icn 10788 ax-addcl 10789 ax-addrcl 10790 ax-mulcl 10791 ax-mulrcl 10792 ax-mulcom 10793 ax-addass 10794 ax-mulass 10795 ax-distr 10796 ax-i2m1 10797 ax-1ne0 10798 ax-1rid 10799 ax-rnegex 10800 ax-rrecex 10801 ax-cnre 10802 ax-pre-lttri 10803 ax-pre-lttrn 10804 ax-pre-ltadd 10805 ax-pre-mulgt0 10806 ax-pre-sup 10807 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 848 df-3or 1090 df-3an 1091 df-tru 1546 df-fal 1556 df-ex 1788 df-nf 1792 df-sb 2071 df-mo 2539 df-eu 2568 df-clab 2715 df-cleq 2729 df-clel 2816 df-nfc 2886 df-ne 2941 df-nel 3047 df-ral 3066 df-rex 3067 df-reu 3068 df-rmo 3069 df-rab 3070 df-v 3410 df-sbc 3695 df-csb 3812 df-dif 3869 df-un 3871 df-in 3873 df-ss 3883 df-pss 3885 df-nul 4238 df-if 4440 df-pw 4515 df-sn 4542 df-pr 4544 df-tp 4546 df-op 4548 df-uni 4820 df-int 4860 df-iun 4906 df-br 5054 df-opab 5116 df-mpt 5136 df-tr 5162 df-id 5455 df-eprel 5460 df-po 5468 df-so 5469 df-fr 5509 df-se 5510 df-we 5511 df-xp 5557 df-rel 5558 df-cnv 5559 df-co 5560 df-dm 5561 df-rn 5562 df-res 5563 df-ima 5564 df-pred 6160 df-ord 6216 df-on 6217 df-lim 6218 df-suc 6219 df-iota 6338 df-fun 6382 df-fn 6383 df-f 6384 df-f1 6385 df-fo 6386 df-f1o 6387 df-fv 6388 df-isom 6389 df-riota 7170 df-ov 7216 df-oprab 7217 df-mpo 7218 df-om 7645 df-1st 7761 df-2nd 7762 df-wrecs 8047 df-recs 8108 df-rdg 8146 df-1o 8202 df-er 8391 df-en 8627 df-dom 8628 df-sdom 8629 df-fin 8630 df-sup 9058 df-oi 9126 df-card 9555 df-pnf 10869 df-mnf 10870 df-xr 10871 df-ltxr 10872 df-le 10873 df-sub 11064 df-neg 11065 df-div 11490 df-nn 11831 df-2 11893 df-3 11894 df-n0 12091 df-z 12177 df-uz 12439 df-rp 12587 df-fz 13096 df-fzo 13239 df-seq 13575 df-exp 13636 df-hash 13897 df-cj 14662 df-re 14663 df-im 14664 df-sqrt 14798 df-abs 14799 df-clim 15049 df-sum 15250 |
This theorem is referenced by: sumtp 15313 ehl2eudis 24319 sge0pr 43607 nnsum3primes4 44913 nnsum3primesgbe 44917 |
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