Mathbox for Glauco Siliprandi |
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Mirrors > Home > MPE Home > Th. List > Mathboxes > sge0rernmpt | Structured version Visualization version GIF version |
Description: If the sum of nonnegative extended reals is not +∞ then no term is +∞. (Contributed by Glauco Siliprandi, 11-Oct-2020.) |
Ref | Expression |
---|---|
sge0rernmpt.xph | ⊢ Ⅎ𝑥𝜑 |
sge0rernmpt.a | ⊢ (𝜑 → 𝐴 ∈ 𝑉) |
sge0rernmpt.b | ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝐵 ∈ (0[,]+∞)) |
sge0rernmpt.re | ⊢ (𝜑 → (Σ^‘(𝑥 ∈ 𝐴 ↦ 𝐵)) ∈ ℝ) |
Ref | Expression |
---|---|
sge0rernmpt | ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝐵 ∈ (0[,)+∞)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 0xr 10880 | . . 3 ⊢ 0 ∈ ℝ* | |
2 | 1 | a1i 11 | . 2 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 0 ∈ ℝ*) |
3 | pnfxr 10887 | . . 3 ⊢ +∞ ∈ ℝ* | |
4 | 3 | a1i 11 | . 2 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → +∞ ∈ ℝ*) |
5 | iccssxr 13018 | . . 3 ⊢ (0[,]+∞) ⊆ ℝ* | |
6 | sge0rernmpt.b | . . 3 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝐵 ∈ (0[,]+∞)) | |
7 | 5, 6 | sseldi 3899 | . 2 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝐵 ∈ ℝ*) |
8 | iccgelb 12991 | . . 3 ⊢ ((0 ∈ ℝ* ∧ +∞ ∈ ℝ* ∧ 𝐵 ∈ (0[,]+∞)) → 0 ≤ 𝐵) | |
9 | 2, 4, 6, 8 | syl3anc 1373 | . 2 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 0 ≤ 𝐵) |
10 | simpr 488 | . . . . . 6 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝐴) ∧ ¬ 𝐵 < +∞) → ¬ 𝐵 < +∞) | |
11 | nltpnft 12754 | . . . . . . . 8 ⊢ (𝐵 ∈ ℝ* → (𝐵 = +∞ ↔ ¬ 𝐵 < +∞)) | |
12 | 7, 11 | syl 17 | . . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → (𝐵 = +∞ ↔ ¬ 𝐵 < +∞)) |
13 | 12 | adantr 484 | . . . . . 6 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝐴) ∧ ¬ 𝐵 < +∞) → (𝐵 = +∞ ↔ ¬ 𝐵 < +∞)) |
14 | 10, 13 | mpbird 260 | . . . . 5 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝐴) ∧ ¬ 𝐵 < +∞) → 𝐵 = +∞) |
15 | 14 | eqcomd 2743 | . . . 4 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝐴) ∧ ¬ 𝐵 < +∞) → +∞ = 𝐵) |
16 | simpr 488 | . . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝑥 ∈ 𝐴) | |
17 | eqid 2737 | . . . . . . 7 ⊢ (𝑥 ∈ 𝐴 ↦ 𝐵) = (𝑥 ∈ 𝐴 ↦ 𝐵) | |
18 | 17 | elrnmpt1 5827 | . . . . . 6 ⊢ ((𝑥 ∈ 𝐴 ∧ 𝐵 ∈ (0[,]+∞)) → 𝐵 ∈ ran (𝑥 ∈ 𝐴 ↦ 𝐵)) |
19 | 16, 6, 18 | syl2anc 587 | . . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝐵 ∈ ran (𝑥 ∈ 𝐴 ↦ 𝐵)) |
20 | 19 | adantr 484 | . . . 4 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝐴) ∧ ¬ 𝐵 < +∞) → 𝐵 ∈ ran (𝑥 ∈ 𝐴 ↦ 𝐵)) |
21 | 15, 20 | eqeltrd 2838 | . . 3 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝐴) ∧ ¬ 𝐵 < +∞) → +∞ ∈ ran (𝑥 ∈ 𝐴 ↦ 𝐵)) |
22 | sge0rernmpt.a | . . . . 5 ⊢ (𝜑 → 𝐴 ∈ 𝑉) | |
23 | sge0rernmpt.xph | . . . . . 6 ⊢ Ⅎ𝑥𝜑 | |
24 | 23, 6, 17 | fmptdf 6934 | . . . . 5 ⊢ (𝜑 → (𝑥 ∈ 𝐴 ↦ 𝐵):𝐴⟶(0[,]+∞)) |
25 | sge0rernmpt.re | . . . . 5 ⊢ (𝜑 → (Σ^‘(𝑥 ∈ 𝐴 ↦ 𝐵)) ∈ ℝ) | |
26 | 22, 24, 25 | sge0rern 43601 | . . . 4 ⊢ (𝜑 → ¬ +∞ ∈ ran (𝑥 ∈ 𝐴 ↦ 𝐵)) |
27 | 26 | ad2antrr 726 | . . 3 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝐴) ∧ ¬ 𝐵 < +∞) → ¬ +∞ ∈ ran (𝑥 ∈ 𝐴 ↦ 𝐵)) |
28 | 21, 27 | condan 818 | . 2 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝐵 < +∞) |
29 | 2, 4, 7, 9, 28 | elicod 12985 | 1 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝐵 ∈ (0[,)+∞)) |
Colors of variables: wff setvar class |
Syntax hints: ¬ wn 3 → wi 4 ↔ wb 209 ∧ wa 399 = wceq 1543 Ⅎwnf 1791 ∈ wcel 2110 class class class wbr 5053 ↦ cmpt 5135 ran crn 5552 ‘cfv 6380 (class class class)co 7213 ℝcr 10728 0cc0 10729 +∞cpnf 10864 ℝ*cxr 10866 < clt 10867 ≤ cle 10868 [,)cico 12937 [,]cicc 12938 Σ^csumge0 43575 |
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-ico 12941 df-icc 12942 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 df-sumge0 43576 |
This theorem is referenced by: sge0ltfirpmpt2 43639 sge0xadd 43648 |
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