Mathbox for Glauco Siliprandi |
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Mirrors > Home > MPE Home > Th. List > Mathboxes > sge0fsummpt | Structured version Visualization version GIF version |
Description: The arbitrary sum of a finite set of nonnegative extended real numbers is equal to the sum of those numbers, when none of them is +∞ (Contributed by Glauco Siliprandi, 17-Aug-2020.) |
Ref | Expression |
---|---|
sge0fsummpt.a | ⊢ (𝜑 → 𝐴 ∈ Fin) |
sge0fsummpt.b | ⊢ ((𝜑 ∧ 𝑘 ∈ 𝐴) → 𝐵 ∈ (0[,)+∞)) |
Ref | Expression |
---|---|
sge0fsummpt | ⊢ (𝜑 → (Σ^‘(𝑘 ∈ 𝐴 ↦ 𝐵)) = Σ𝑘 ∈ 𝐴 𝐵) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | sge0fsummpt.a | . . 3 ⊢ (𝜑 → 𝐴 ∈ Fin) | |
2 | sge0fsummpt.b | . . . 4 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝐴) → 𝐵 ∈ (0[,)+∞)) | |
3 | eqid 2758 | . . . 4 ⊢ (𝑘 ∈ 𝐴 ↦ 𝐵) = (𝑘 ∈ 𝐴 ↦ 𝐵) | |
4 | 2, 3 | fmptd 6875 | . . 3 ⊢ (𝜑 → (𝑘 ∈ 𝐴 ↦ 𝐵):𝐴⟶(0[,)+∞)) |
5 | 1, 4 | sge0fsum 43427 | . 2 ⊢ (𝜑 → (Σ^‘(𝑘 ∈ 𝐴 ↦ 𝐵)) = Σ𝑗 ∈ 𝐴 ((𝑘 ∈ 𝐴 ↦ 𝐵)‘𝑗)) |
6 | fveq2 6663 | . . . 4 ⊢ (𝑗 = 𝑘 → ((𝑘 ∈ 𝐴 ↦ 𝐵)‘𝑗) = ((𝑘 ∈ 𝐴 ↦ 𝐵)‘𝑘)) | |
7 | nfcv 2919 | . . . 4 ⊢ Ⅎ𝑘𝐴 | |
8 | nfcv 2919 | . . . 4 ⊢ Ⅎ𝑗𝐴 | |
9 | nfmpt1 5134 | . . . . 5 ⊢ Ⅎ𝑘(𝑘 ∈ 𝐴 ↦ 𝐵) | |
10 | nfcv 2919 | . . . . 5 ⊢ Ⅎ𝑘𝑗 | |
11 | 9, 10 | nffv 6673 | . . . 4 ⊢ Ⅎ𝑘((𝑘 ∈ 𝐴 ↦ 𝐵)‘𝑗) |
12 | nfcv 2919 | . . . 4 ⊢ Ⅎ𝑗((𝑘 ∈ 𝐴 ↦ 𝐵)‘𝑘) | |
13 | 6, 7, 8, 11, 12 | cbvsum 15113 | . . 3 ⊢ Σ𝑗 ∈ 𝐴 ((𝑘 ∈ 𝐴 ↦ 𝐵)‘𝑗) = Σ𝑘 ∈ 𝐴 ((𝑘 ∈ 𝐴 ↦ 𝐵)‘𝑘) |
14 | 13 | a1i 11 | . 2 ⊢ (𝜑 → Σ𝑗 ∈ 𝐴 ((𝑘 ∈ 𝐴 ↦ 𝐵)‘𝑗) = Σ𝑘 ∈ 𝐴 ((𝑘 ∈ 𝐴 ↦ 𝐵)‘𝑘)) |
15 | simpr 488 | . . . 4 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝐴) → 𝑘 ∈ 𝐴) | |
16 | 3 | fvmpt2 6775 | . . . 4 ⊢ ((𝑘 ∈ 𝐴 ∧ 𝐵 ∈ (0[,)+∞)) → ((𝑘 ∈ 𝐴 ↦ 𝐵)‘𝑘) = 𝐵) |
17 | 15, 2, 16 | syl2anc 587 | . . 3 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝐴) → ((𝑘 ∈ 𝐴 ↦ 𝐵)‘𝑘) = 𝐵) |
18 | 17 | sumeq2dv 15121 | . 2 ⊢ (𝜑 → Σ𝑘 ∈ 𝐴 ((𝑘 ∈ 𝐴 ↦ 𝐵)‘𝑘) = Σ𝑘 ∈ 𝐴 𝐵) |
19 | 5, 14, 18 | 3eqtrd 2797 | 1 ⊢ (𝜑 → (Σ^‘(𝑘 ∈ 𝐴 ↦ 𝐵)) = Σ𝑘 ∈ 𝐴 𝐵) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 399 = wceq 1538 ∈ wcel 2111 ↦ cmpt 5116 ‘cfv 6340 (class class class)co 7156 Fincfn 8540 0cc0 10588 +∞cpnf 10723 [,)cico 12794 Σcsu 15103 Σ^csumge0 43402 |
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 5160 ax-sep 5173 ax-nul 5180 ax-pow 5238 ax-pr 5302 ax-un 7465 ax-inf2 9150 ax-cnex 10644 ax-resscn 10645 ax-1cn 10646 ax-icn 10647 ax-addcl 10648 ax-addrcl 10649 ax-mulcl 10650 ax-mulrcl 10651 ax-mulcom 10652 ax-addass 10653 ax-mulass 10654 ax-distr 10655 ax-i2m1 10656 ax-1ne0 10657 ax-1rid 10658 ax-rnegex 10659 ax-rrecex 10660 ax-cnre 10661 ax-pre-lttri 10662 ax-pre-lttrn 10663 ax-pre-ltadd 10664 ax-pre-mulgt0 10665 ax-pre-sup 10666 |
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 3699 df-csb 3808 df-dif 3863 df-un 3865 df-in 3867 df-ss 3877 df-pss 3879 df-nul 4228 df-if 4424 df-pw 4499 df-sn 4526 df-pr 4528 df-tp 4530 df-op 4532 df-uni 4802 df-int 4842 df-iun 4888 df-br 5037 df-opab 5099 df-mpt 5117 df-tr 5143 df-id 5434 df-eprel 5439 df-po 5447 df-so 5448 df-fr 5487 df-se 5488 df-we 5489 df-xp 5534 df-rel 5535 df-cnv 5536 df-co 5537 df-dm 5538 df-rn 5539 df-res 5540 df-ima 5541 df-pred 6131 df-ord 6177 df-on 6178 df-lim 6179 df-suc 6180 df-iota 6299 df-fun 6342 df-fn 6343 df-f 6344 df-f1 6345 df-fo 6346 df-f1o 6347 df-fv 6348 df-isom 6349 df-riota 7114 df-ov 7159 df-oprab 7160 df-mpo 7161 df-om 7586 df-1st 7699 df-2nd 7700 df-wrecs 7963 df-recs 8024 df-rdg 8062 df-1o 8118 df-er 8305 df-en 8541 df-dom 8542 df-sdom 8543 df-fin 8544 df-sup 8952 df-oi 9020 df-card 9414 df-pnf 10728 df-mnf 10729 df-xr 10730 df-ltxr 10731 df-le 10732 df-sub 10923 df-neg 10924 df-div 11349 df-nn 11688 df-2 11750 df-3 11751 df-n0 11948 df-z 12034 df-uz 12296 df-rp 12444 df-ico 12798 df-icc 12799 df-fz 12953 df-fzo 13096 df-seq 13432 df-exp 13493 df-hash 13754 df-cj 14519 df-re 14520 df-im 14521 df-sqrt 14655 df-abs 14656 df-clim 14906 df-sum 15104 df-sumge0 43403 |
This theorem is referenced by: sge0pr 43434 sge0iunmptlemfi 43453 sge0iunmptlemre 43455 sge0rpcpnf 43461 sge0isum 43467 sge0xaddlem2 43474 sge0seq 43486 meaiuninclem 43520 omeiunltfirp 43559 hoidmvlelem2 43636 |
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