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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 2736 | . . . 4 ⊢ (𝑘 ∈ 𝐴 ↦ 𝐵) = (𝑘 ∈ 𝐴 ↦ 𝐵) | |
4 | 2, 3 | fmptd 7058 | . . 3 ⊢ (𝜑 → (𝑘 ∈ 𝐴 ↦ 𝐵):𝐴⟶(0[,)+∞)) |
5 | 1, 4 | sge0fsum 44560 | . 2 ⊢ (𝜑 → (Σ^‘(𝑘 ∈ 𝐴 ↦ 𝐵)) = Σ𝑗 ∈ 𝐴 ((𝑘 ∈ 𝐴 ↦ 𝐵)‘𝑗)) |
6 | fveq2 6839 | . . . 4 ⊢ (𝑗 = 𝑘 → ((𝑘 ∈ 𝐴 ↦ 𝐵)‘𝑗) = ((𝑘 ∈ 𝐴 ↦ 𝐵)‘𝑘)) | |
7 | nfcv 2905 | . . . 4 ⊢ Ⅎ𝑘𝐴 | |
8 | nfcv 2905 | . . . 4 ⊢ Ⅎ𝑗𝐴 | |
9 | nfmpt1 5211 | . . . . 5 ⊢ Ⅎ𝑘(𝑘 ∈ 𝐴 ↦ 𝐵) | |
10 | nfcv 2905 | . . . . 5 ⊢ Ⅎ𝑘𝑗 | |
11 | 9, 10 | nffv 6849 | . . . 4 ⊢ Ⅎ𝑘((𝑘 ∈ 𝐴 ↦ 𝐵)‘𝑗) |
12 | nfcv 2905 | . . . 4 ⊢ Ⅎ𝑗((𝑘 ∈ 𝐴 ↦ 𝐵)‘𝑘) | |
13 | 6, 7, 8, 11, 12 | cbvsum 15572 | . . 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 485 | . . . 4 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝐴) → 𝑘 ∈ 𝐴) | |
16 | 3 | fvmpt2 6956 | . . . 4 ⊢ ((𝑘 ∈ 𝐴 ∧ 𝐵 ∈ (0[,)+∞)) → ((𝑘 ∈ 𝐴 ↦ 𝐵)‘𝑘) = 𝐵) |
17 | 15, 2, 16 | syl2anc 584 | . . 3 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝐴) → ((𝑘 ∈ 𝐴 ↦ 𝐵)‘𝑘) = 𝐵) |
18 | 17 | sumeq2dv 15580 | . 2 ⊢ (𝜑 → Σ𝑘 ∈ 𝐴 ((𝑘 ∈ 𝐴 ↦ 𝐵)‘𝑘) = Σ𝑘 ∈ 𝐴 𝐵) |
19 | 5, 14, 18 | 3eqtrd 2780 | 1 ⊢ (𝜑 → (Σ^‘(𝑘 ∈ 𝐴 ↦ 𝐵)) = Σ𝑘 ∈ 𝐴 𝐵) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 396 = wceq 1541 ∈ wcel 2106 ↦ cmpt 5186 ‘cfv 6493 (class class class)co 7353 Fincfn 8879 0cc0 11047 +∞cpnf 11182 [,)cico 13258 Σcsu 15562 Σ^csumge0 44535 |
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 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-11 2154 ax-12 2171 ax-ext 2707 ax-rep 5240 ax-sep 5254 ax-nul 5261 ax-pow 5318 ax-pr 5382 ax-un 7668 ax-inf2 9573 ax-cnex 11103 ax-resscn 11104 ax-1cn 11105 ax-icn 11106 ax-addcl 11107 ax-addrcl 11108 ax-mulcl 11109 ax-mulrcl 11110 ax-mulcom 11111 ax-addass 11112 ax-mulass 11113 ax-distr 11114 ax-i2m1 11115 ax-1ne0 11116 ax-1rid 11117 ax-rnegex 11118 ax-rrecex 11119 ax-cnre 11120 ax-pre-lttri 11121 ax-pre-lttrn 11122 ax-pre-ltadd 11123 ax-pre-mulgt0 11124 ax-pre-sup 11125 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 846 df-3or 1088 df-3an 1089 df-tru 1544 df-fal 1554 df-ex 1782 df-nf 1786 df-sb 2068 df-mo 2538 df-eu 2567 df-clab 2714 df-cleq 2728 df-clel 2814 df-nfc 2887 df-ne 2942 df-nel 3048 df-ral 3063 df-rex 3072 df-rmo 3351 df-reu 3352 df-rab 3406 df-v 3445 df-sbc 3738 df-csb 3854 df-dif 3911 df-un 3913 df-in 3915 df-ss 3925 df-pss 3927 df-nul 4281 df-if 4485 df-pw 4560 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4864 df-int 4906 df-iun 4954 df-br 5104 df-opab 5166 df-mpt 5187 df-tr 5221 df-id 5529 df-eprel 5535 df-po 5543 df-so 5544 df-fr 5586 df-se 5587 df-we 5588 df-xp 5637 df-rel 5638 df-cnv 5639 df-co 5640 df-dm 5641 df-rn 5642 df-res 5643 df-ima 5644 df-pred 6251 df-ord 6318 df-on 6319 df-lim 6320 df-suc 6321 df-iota 6445 df-fun 6495 df-fn 6496 df-f 6497 df-f1 6498 df-fo 6499 df-f1o 6500 df-fv 6501 df-isom 6502 df-riota 7309 df-ov 7356 df-oprab 7357 df-mpo 7358 df-om 7799 df-1st 7917 df-2nd 7918 df-frecs 8208 df-wrecs 8239 df-recs 8313 df-rdg 8352 df-1o 8408 df-er 8644 df-en 8880 df-dom 8881 df-sdom 8882 df-fin 8883 df-sup 9374 df-oi 9442 df-card 9871 df-pnf 11187 df-mnf 11188 df-xr 11189 df-ltxr 11190 df-le 11191 df-sub 11383 df-neg 11384 df-div 11809 df-nn 12150 df-2 12212 df-3 12213 df-n0 12410 df-z 12496 df-uz 12760 df-rp 12908 df-ico 13262 df-icc 13263 df-fz 13417 df-fzo 13560 df-seq 13899 df-exp 13960 df-hash 14223 df-cj 14976 df-re 14977 df-im 14978 df-sqrt 15112 df-abs 15113 df-clim 15362 df-sum 15563 df-sumge0 44536 |
This theorem is referenced by: sge0pr 44567 sge0iunmptlemfi 44586 sge0iunmptlemre 44588 sge0rpcpnf 44594 sge0isum 44600 sge0xaddlem2 44607 sge0seq 44619 meaiuninclem 44653 omeiunltfirp 44692 hoidmvlelem2 44769 |
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