Mathbox for Glauco Siliprandi |
< Previous
Next >
Nearby theorems |
||
Mirrors > Home > MPE Home > Th. List > Mathboxes > sge0gerp | Structured version Visualization version GIF version |
Description: The arbitrary sum of nonnegative extended reals is greater than or equal to a given extended real number if this number can be approximated from below by finite subsums. (Contributed by Glauco Siliprandi, 17-Aug-2020.) |
Ref | Expression |
---|---|
sge0gerp.x | ⊢ (𝜑 → 𝑋 ∈ 𝑉) |
sge0gerp.f | ⊢ (𝜑 → 𝐹:𝑋⟶(0[,]+∞)) |
sge0gerp.a | ⊢ (𝜑 → 𝐴 ∈ ℝ*) |
sge0gerp.z | ⊢ ((𝜑 ∧ 𝑥 ∈ ℝ+) → ∃𝑧 ∈ (𝒫 𝑋 ∩ Fin)𝐴 ≤ ((Σ^‘(𝐹 ↾ 𝑧)) +𝑒 𝑥)) |
Ref | Expression |
---|---|
sge0gerp | ⊢ (𝜑 → 𝐴 ≤ (Σ^‘𝐹)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | nfv 1917 | . . 3 ⊢ Ⅎ𝑥𝜑 | |
2 | simpr 485 | . . . . . 6 ⊢ ((𝜑 ∧ 𝑧 ∈ (𝒫 𝑋 ∩ Fin)) → 𝑧 ∈ (𝒫 𝑋 ∩ Fin)) | |
3 | sge0gerp.f | . . . . . . . 8 ⊢ (𝜑 → 𝐹:𝑋⟶(0[,]+∞)) | |
4 | 3 | adantr 481 | . . . . . . 7 ⊢ ((𝜑 ∧ 𝑧 ∈ (𝒫 𝑋 ∩ Fin)) → 𝐹:𝑋⟶(0[,]+∞)) |
5 | elinel1 4129 | . . . . . . . . 9 ⊢ (𝑧 ∈ (𝒫 𝑋 ∩ Fin) → 𝑧 ∈ 𝒫 𝑋) | |
6 | elpwi 4542 | . . . . . . . . 9 ⊢ (𝑧 ∈ 𝒫 𝑋 → 𝑧 ⊆ 𝑋) | |
7 | 5, 6 | syl 17 | . . . . . . . 8 ⊢ (𝑧 ∈ (𝒫 𝑋 ∩ Fin) → 𝑧 ⊆ 𝑋) |
8 | 7 | adantl 482 | . . . . . . 7 ⊢ ((𝜑 ∧ 𝑧 ∈ (𝒫 𝑋 ∩ Fin)) → 𝑧 ⊆ 𝑋) |
9 | 4, 8 | fssresd 6641 | . . . . . 6 ⊢ ((𝜑 ∧ 𝑧 ∈ (𝒫 𝑋 ∩ Fin)) → (𝐹 ↾ 𝑧):𝑧⟶(0[,]+∞)) |
10 | 2, 9 | sge0xrcl 43923 | . . . . 5 ⊢ ((𝜑 ∧ 𝑧 ∈ (𝒫 𝑋 ∩ Fin)) → (Σ^‘(𝐹 ↾ 𝑧)) ∈ ℝ*) |
11 | 10 | ralrimiva 3103 | . . . 4 ⊢ (𝜑 → ∀𝑧 ∈ (𝒫 𝑋 ∩ Fin)(Σ^‘(𝐹 ↾ 𝑧)) ∈ ℝ*) |
12 | eqid 2738 | . . . . 5 ⊢ (𝑧 ∈ (𝒫 𝑋 ∩ Fin) ↦ (Σ^‘(𝐹 ↾ 𝑧))) = (𝑧 ∈ (𝒫 𝑋 ∩ Fin) ↦ (Σ^‘(𝐹 ↾ 𝑧))) | |
13 | 12 | rnmptss 6996 | . . . 4 ⊢ (∀𝑧 ∈ (𝒫 𝑋 ∩ Fin)(Σ^‘(𝐹 ↾ 𝑧)) ∈ ℝ* → ran (𝑧 ∈ (𝒫 𝑋 ∩ Fin) ↦ (Σ^‘(𝐹 ↾ 𝑧))) ⊆ ℝ*) |
14 | 11, 13 | syl 17 | . . 3 ⊢ (𝜑 → ran (𝑧 ∈ (𝒫 𝑋 ∩ Fin) ↦ (Σ^‘(𝐹 ↾ 𝑧))) ⊆ ℝ*) |
15 | sge0gerp.a | . . 3 ⊢ (𝜑 → 𝐴 ∈ ℝ*) | |
16 | sge0gerp.z | . . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ ℝ+) → ∃𝑧 ∈ (𝒫 𝑋 ∩ Fin)𝐴 ≤ ((Σ^‘(𝐹 ↾ 𝑧)) +𝑒 𝑥)) | |
17 | nfv 1917 | . . . . 5 ⊢ Ⅎ𝑧(𝜑 ∧ 𝑥 ∈ ℝ+) | |
18 | nfmpt1 5182 | . . . . . . 7 ⊢ Ⅎ𝑧(𝑧 ∈ (𝒫 𝑋 ∩ Fin) ↦ (Σ^‘(𝐹 ↾ 𝑧))) | |
19 | 18 | nfrn 5861 | . . . . . 6 ⊢ Ⅎ𝑧ran (𝑧 ∈ (𝒫 𝑋 ∩ Fin) ↦ (Σ^‘(𝐹 ↾ 𝑧))) |
20 | nfv 1917 | . . . . . 6 ⊢ Ⅎ𝑧 𝐴 ≤ (𝑦 +𝑒 𝑥) | |
21 | 19, 20 | nfrex 3242 | . . . . 5 ⊢ Ⅎ𝑧∃𝑦 ∈ ran (𝑧 ∈ (𝒫 𝑋 ∩ Fin) ↦ (Σ^‘(𝐹 ↾ 𝑧)))𝐴 ≤ (𝑦 +𝑒 𝑥) |
22 | id 22 | . . . . . . . . 9 ⊢ (𝑧 ∈ (𝒫 𝑋 ∩ Fin) → 𝑧 ∈ (𝒫 𝑋 ∩ Fin)) | |
23 | fvexd 6789 | . . . . . . . . 9 ⊢ (𝑧 ∈ (𝒫 𝑋 ∩ Fin) → (Σ^‘(𝐹 ↾ 𝑧)) ∈ V) | |
24 | 12 | elrnmpt1 5867 | . . . . . . . . 9 ⊢ ((𝑧 ∈ (𝒫 𝑋 ∩ Fin) ∧ (Σ^‘(𝐹 ↾ 𝑧)) ∈ V) → (Σ^‘(𝐹 ↾ 𝑧)) ∈ ran (𝑧 ∈ (𝒫 𝑋 ∩ Fin) ↦ (Σ^‘(𝐹 ↾ 𝑧)))) |
25 | 22, 23, 24 | syl2anc 584 | . . . . . . . 8 ⊢ (𝑧 ∈ (𝒫 𝑋 ∩ Fin) → (Σ^‘(𝐹 ↾ 𝑧)) ∈ ran (𝑧 ∈ (𝒫 𝑋 ∩ Fin) ↦ (Σ^‘(𝐹 ↾ 𝑧)))) |
26 | 25 | 3ad2ant2 1133 | . . . . . . 7 ⊢ (((𝜑 ∧ 𝑥 ∈ ℝ+) ∧ 𝑧 ∈ (𝒫 𝑋 ∩ Fin) ∧ 𝐴 ≤ ((Σ^‘(𝐹 ↾ 𝑧)) +𝑒 𝑥)) → (Σ^‘(𝐹 ↾ 𝑧)) ∈ ran (𝑧 ∈ (𝒫 𝑋 ∩ Fin) ↦ (Σ^‘(𝐹 ↾ 𝑧)))) |
27 | simp3 1137 | . . . . . . 7 ⊢ (((𝜑 ∧ 𝑥 ∈ ℝ+) ∧ 𝑧 ∈ (𝒫 𝑋 ∩ Fin) ∧ 𝐴 ≤ ((Σ^‘(𝐹 ↾ 𝑧)) +𝑒 𝑥)) → 𝐴 ≤ ((Σ^‘(𝐹 ↾ 𝑧)) +𝑒 𝑥)) | |
28 | nfv 1917 | . . . . . . . 8 ⊢ Ⅎ𝑦 𝐴 ≤ ((Σ^‘(𝐹 ↾ 𝑧)) +𝑒 𝑥) | |
29 | oveq1 7282 | . . . . . . . . 9 ⊢ (𝑦 = (Σ^‘(𝐹 ↾ 𝑧)) → (𝑦 +𝑒 𝑥) = ((Σ^‘(𝐹 ↾ 𝑧)) +𝑒 𝑥)) | |
30 | 29 | breq2d 5086 | . . . . . . . 8 ⊢ (𝑦 = (Σ^‘(𝐹 ↾ 𝑧)) → (𝐴 ≤ (𝑦 +𝑒 𝑥) ↔ 𝐴 ≤ ((Σ^‘(𝐹 ↾ 𝑧)) +𝑒 𝑥))) |
31 | 28, 30 | rspce 3550 | . . . . . . 7 ⊢ (((Σ^‘(𝐹 ↾ 𝑧)) ∈ ran (𝑧 ∈ (𝒫 𝑋 ∩ Fin) ↦ (Σ^‘(𝐹 ↾ 𝑧))) ∧ 𝐴 ≤ ((Σ^‘(𝐹 ↾ 𝑧)) +𝑒 𝑥)) → ∃𝑦 ∈ ran (𝑧 ∈ (𝒫 𝑋 ∩ Fin) ↦ (Σ^‘(𝐹 ↾ 𝑧)))𝐴 ≤ (𝑦 +𝑒 𝑥)) |
32 | 26, 27, 31 | syl2anc 584 | . . . . . 6 ⊢ (((𝜑 ∧ 𝑥 ∈ ℝ+) ∧ 𝑧 ∈ (𝒫 𝑋 ∩ Fin) ∧ 𝐴 ≤ ((Σ^‘(𝐹 ↾ 𝑧)) +𝑒 𝑥)) → ∃𝑦 ∈ ran (𝑧 ∈ (𝒫 𝑋 ∩ Fin) ↦ (Σ^‘(𝐹 ↾ 𝑧)))𝐴 ≤ (𝑦 +𝑒 𝑥)) |
33 | 32 | 3exp 1118 | . . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ ℝ+) → (𝑧 ∈ (𝒫 𝑋 ∩ Fin) → (𝐴 ≤ ((Σ^‘(𝐹 ↾ 𝑧)) +𝑒 𝑥) → ∃𝑦 ∈ ran (𝑧 ∈ (𝒫 𝑋 ∩ Fin) ↦ (Σ^‘(𝐹 ↾ 𝑧)))𝐴 ≤ (𝑦 +𝑒 𝑥)))) |
34 | 17, 21, 33 | rexlimd 3250 | . . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ ℝ+) → (∃𝑧 ∈ (𝒫 𝑋 ∩ Fin)𝐴 ≤ ((Σ^‘(𝐹 ↾ 𝑧)) +𝑒 𝑥) → ∃𝑦 ∈ ran (𝑧 ∈ (𝒫 𝑋 ∩ Fin) ↦ (Σ^‘(𝐹 ↾ 𝑧)))𝐴 ≤ (𝑦 +𝑒 𝑥))) |
35 | 16, 34 | mpd 15 | . . 3 ⊢ ((𝜑 ∧ 𝑥 ∈ ℝ+) → ∃𝑦 ∈ ran (𝑧 ∈ (𝒫 𝑋 ∩ Fin) ↦ (Σ^‘(𝐹 ↾ 𝑧)))𝐴 ≤ (𝑦 +𝑒 𝑥)) |
36 | 1, 14, 15, 35 | supxrge 42877 | . 2 ⊢ (𝜑 → 𝐴 ≤ sup(ran (𝑧 ∈ (𝒫 𝑋 ∩ Fin) ↦ (Σ^‘(𝐹 ↾ 𝑧))), ℝ*, < )) |
37 | sge0gerp.x | . . . 4 ⊢ (𝜑 → 𝑋 ∈ 𝑉) | |
38 | 37, 3 | sge0sup 43929 | . . 3 ⊢ (𝜑 → (Σ^‘𝐹) = sup(ran (𝑧 ∈ (𝒫 𝑋 ∩ Fin) ↦ (Σ^‘(𝐹 ↾ 𝑧))), ℝ*, < )) |
39 | 38 | eqcomd 2744 | . 2 ⊢ (𝜑 → sup(ran (𝑧 ∈ (𝒫 𝑋 ∩ Fin) ↦ (Σ^‘(𝐹 ↾ 𝑧))), ℝ*, < ) = (Σ^‘𝐹)) |
40 | 36, 39 | breqtrd 5100 | 1 ⊢ (𝜑 → 𝐴 ≤ (Σ^‘𝐹)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 396 ∧ w3a 1086 = wceq 1539 ∈ wcel 2106 ∀wral 3064 ∃wrex 3065 Vcvv 3432 ∩ cin 3886 ⊆ wss 3887 𝒫 cpw 4533 class class class wbr 5074 ↦ cmpt 5157 ran crn 5590 ↾ cres 5591 ⟶wf 6429 ‘cfv 6433 (class class class)co 7275 Fincfn 8733 supcsup 9199 0cc0 10871 +∞cpnf 11006 ℝ*cxr 11008 < clt 11009 ≤ cle 11010 ℝ+crp 12730 +𝑒 cxad 12846 [,]cicc 13082 Σ^csumge0 43900 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 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 2709 ax-rep 5209 ax-sep 5223 ax-nul 5230 ax-pow 5288 ax-pr 5352 ax-un 7588 ax-inf2 9399 ax-cnex 10927 ax-resscn 10928 ax-1cn 10929 ax-icn 10930 ax-addcl 10931 ax-addrcl 10932 ax-mulcl 10933 ax-mulrcl 10934 ax-mulcom 10935 ax-addass 10936 ax-mulass 10937 ax-distr 10938 ax-i2m1 10939 ax-1ne0 10940 ax-1rid 10941 ax-rnegex 10942 ax-rrecex 10943 ax-cnre 10944 ax-pre-lttri 10945 ax-pre-lttrn 10946 ax-pre-ltadd 10947 ax-pre-mulgt0 10948 ax-pre-sup 10949 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 845 df-3or 1087 df-3an 1088 df-tru 1542 df-fal 1552 df-ex 1783 df-nf 1787 df-sb 2068 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2816 df-nfc 2889 df-ne 2944 df-nel 3050 df-ral 3069 df-rex 3070 df-rmo 3071 df-reu 3072 df-rab 3073 df-v 3434 df-sbc 3717 df-csb 3833 df-dif 3890 df-un 3892 df-in 3894 df-ss 3904 df-pss 3906 df-nul 4257 df-if 4460 df-pw 4535 df-sn 4562 df-pr 4564 df-op 4568 df-uni 4840 df-int 4880 df-iun 4926 df-br 5075 df-opab 5137 df-mpt 5158 df-tr 5192 df-id 5489 df-eprel 5495 df-po 5503 df-so 5504 df-fr 5544 df-se 5545 df-we 5546 df-xp 5595 df-rel 5596 df-cnv 5597 df-co 5598 df-dm 5599 df-rn 5600 df-res 5601 df-ima 5602 df-pred 6202 df-ord 6269 df-on 6270 df-lim 6271 df-suc 6272 df-iota 6391 df-fun 6435 df-fn 6436 df-f 6437 df-f1 6438 df-fo 6439 df-f1o 6440 df-fv 6441 df-isom 6442 df-riota 7232 df-ov 7278 df-oprab 7279 df-mpo 7280 df-om 7713 df-1st 7831 df-2nd 7832 df-frecs 8097 df-wrecs 8128 df-recs 8202 df-rdg 8241 df-1o 8297 df-er 8498 df-en 8734 df-dom 8735 df-sdom 8736 df-fin 8737 df-sup 9201 df-oi 9269 df-card 9697 df-pnf 11011 df-mnf 11012 df-xr 11013 df-ltxr 11014 df-le 11015 df-sub 11207 df-neg 11208 df-div 11633 df-nn 11974 df-2 12036 df-3 12037 df-n0 12234 df-z 12320 df-uz 12583 df-rp 12731 df-xadd 12849 df-ico 13085 df-icc 13086 df-fz 13240 df-fzo 13383 df-seq 13722 df-exp 13783 df-hash 14045 df-cj 14810 df-re 14811 df-im 14812 df-sqrt 14946 df-abs 14947 df-clim 15197 df-sum 15398 df-sumge0 43901 |
This theorem is referenced by: sge0gerpmpt 43940 |
Copyright terms: Public domain | W3C validator |