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Mirrors > Home > ILE Home > Th. List > iserge0 | GIF version |
Description: The limit of an infinite series of nonnegative reals is nonnegative. (Contributed by Paul Chapman, 9-Feb-2008.) (Revised by Mario Carneiro, 3-Feb-2014.) |
Ref | Expression |
---|---|
clim2iser.1 | ⊢ 𝑍 = (ℤ≥‘𝑀) |
iserge0.2 | ⊢ (𝜑 → 𝑀 ∈ ℤ) |
iserge0.3 | ⊢ (𝜑 → seq𝑀( + , 𝐹) ⇝ 𝐴) |
iserge0.4 | ⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → (𝐹‘𝑘) ∈ ℝ) |
iserge0.5 | ⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → 0 ≤ (𝐹‘𝑘)) |
Ref | Expression |
---|---|
iserge0 | ⊢ (𝜑 → 0 ≤ 𝐴) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | clim2iser.1 | . 2 ⊢ 𝑍 = (ℤ≥‘𝑀) | |
2 | iserge0.2 | . 2 ⊢ (𝜑 → 𝑀 ∈ ℤ) | |
3 | serclim0 11079 | . . 3 ⊢ (𝑀 ∈ ℤ → seq𝑀( + , ((ℤ≥‘𝑀) × {0})) ⇝ 0) | |
4 | 2, 3 | syl 14 | . 2 ⊢ (𝜑 → seq𝑀( + , ((ℤ≥‘𝑀) × {0})) ⇝ 0) |
5 | iserge0.3 | . 2 ⊢ (𝜑 → seq𝑀( + , 𝐹) ⇝ 𝐴) | |
6 | simpr 109 | . . . . 5 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → 𝑘 ∈ 𝑍) | |
7 | 6, 1 | eleqtrdi 2232 | . . . 4 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → 𝑘 ∈ (ℤ≥‘𝑀)) |
8 | c0ex 7765 | . . . . 5 ⊢ 0 ∈ V | |
9 | 8 | fvconst2 5636 | . . . 4 ⊢ (𝑘 ∈ (ℤ≥‘𝑀) → (((ℤ≥‘𝑀) × {0})‘𝑘) = 0) |
10 | 7, 9 | syl 14 | . . 3 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → (((ℤ≥‘𝑀) × {0})‘𝑘) = 0) |
11 | 0re 7771 | . . 3 ⊢ 0 ∈ ℝ | |
12 | 10, 11 | eqeltrdi 2230 | . 2 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → (((ℤ≥‘𝑀) × {0})‘𝑘) ∈ ℝ) |
13 | iserge0.4 | . 2 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → (𝐹‘𝑘) ∈ ℝ) | |
14 | iserge0.5 | . . 3 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → 0 ≤ (𝐹‘𝑘)) | |
15 | 10, 14 | eqbrtrd 3950 | . 2 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → (((ℤ≥‘𝑀) × {0})‘𝑘) ≤ (𝐹‘𝑘)) |
16 | 1, 2, 4, 5, 12, 13, 15 | iserle 11116 | 1 ⊢ (𝜑 → 0 ≤ 𝐴) |
Colors of variables: wff set class |
Syntax hints: → wi 4 ∧ wa 103 = wceq 1331 ∈ wcel 1480 {csn 3527 class class class wbr 3929 × cxp 4537 ‘cfv 5123 ℝcr 7624 0cc0 7625 + caddc 7628 ≤ cle 7806 ℤcz 9059 ℤ≥cuz 9331 seqcseq 10223 ⇝ cli 11052 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-in1 603 ax-in2 604 ax-io 698 ax-5 1423 ax-7 1424 ax-gen 1425 ax-ie1 1469 ax-ie2 1470 ax-8 1482 ax-10 1483 ax-11 1484 ax-i12 1485 ax-bndl 1486 ax-4 1487 ax-13 1491 ax-14 1492 ax-17 1506 ax-i9 1510 ax-ial 1514 ax-i5r 1515 ax-ext 2121 ax-coll 4043 ax-sep 4046 ax-nul 4054 ax-pow 4098 ax-pr 4131 ax-un 4355 ax-setind 4452 ax-iinf 4502 ax-cnex 7716 ax-resscn 7717 ax-1cn 7718 ax-1re 7719 ax-icn 7720 ax-addcl 7721 ax-addrcl 7722 ax-mulcl 7723 ax-mulrcl 7724 ax-addcom 7725 ax-mulcom 7726 ax-addass 7727 ax-mulass 7728 ax-distr 7729 ax-i2m1 7730 ax-0lt1 7731 ax-1rid 7732 ax-0id 7733 ax-rnegex 7734 ax-precex 7735 ax-cnre 7736 ax-pre-ltirr 7737 ax-pre-ltwlin 7738 ax-pre-lttrn 7739 ax-pre-apti 7740 ax-pre-ltadd 7741 ax-pre-mulgt0 7742 ax-pre-mulext 7743 ax-arch 7744 ax-caucvg 7745 |
This theorem depends on definitions: df-bi 116 df-dc 820 df-3or 963 df-3an 964 df-tru 1334 df-fal 1337 df-nf 1437 df-sb 1736 df-eu 2002 df-mo 2003 df-clab 2126 df-cleq 2132 df-clel 2135 df-nfc 2270 df-ne 2309 df-nel 2404 df-ral 2421 df-rex 2422 df-reu 2423 df-rmo 2424 df-rab 2425 df-v 2688 df-sbc 2910 df-csb 3004 df-dif 3073 df-un 3075 df-in 3077 df-ss 3084 df-nul 3364 df-if 3475 df-pw 3512 df-sn 3533 df-pr 3534 df-op 3536 df-uni 3737 df-int 3772 df-iun 3815 df-br 3930 df-opab 3990 df-mpt 3991 df-tr 4027 df-id 4215 df-po 4218 df-iso 4219 df-iord 4288 df-on 4290 df-ilim 4291 df-suc 4293 df-iom 4505 df-xp 4545 df-rel 4546 df-cnv 4547 df-co 4548 df-dm 4549 df-rn 4550 df-res 4551 df-ima 4552 df-iota 5088 df-fun 5125 df-fn 5126 df-f 5127 df-f1 5128 df-fo 5129 df-f1o 5130 df-fv 5131 df-riota 5730 df-ov 5777 df-oprab 5778 df-mpo 5779 df-1st 6038 df-2nd 6039 df-recs 6202 df-frec 6288 df-pnf 7807 df-mnf 7808 df-xr 7809 df-ltxr 7810 df-le 7811 df-sub 7940 df-neg 7941 df-reap 8342 df-ap 8349 df-div 8438 df-inn 8726 df-2 8784 df-3 8785 df-4 8786 df-n0 8983 df-z 9060 df-uz 9332 df-rp 9447 df-fz 9796 df-fzo 9925 df-seqfrec 10224 df-exp 10298 df-cj 10619 df-re 10620 df-im 10621 df-rsqrt 10775 df-abs 10776 df-clim 11053 |
This theorem is referenced by: isumge0 11204 |
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