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| Mirrors > Home > MPE Home > Th. List > Mathboxes > sge0gerpmpt | 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 | 
|---|---|
| sge0gerpmpt.xph | ⊢ Ⅎ𝑥𝜑 | 
| sge0gerpmpt.a | ⊢ (𝜑 → 𝐴 ∈ 𝑉) | 
| sge0gerpmpt.b | ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝐵 ∈ (0[,]+∞)) | 
| sge0gerpmpt.c | ⊢ (𝜑 → 𝐶 ∈ ℝ*) | 
| sge0gerpmpt.rp | ⊢ ((𝜑 ∧ 𝑦 ∈ ℝ+) → ∃𝑧 ∈ (𝒫 𝐴 ∩ Fin)𝐶 ≤ ((Σ^‘(𝑥 ∈ 𝑧 ↦ 𝐵)) +𝑒 𝑦)) | 
| Ref | Expression | 
|---|---|
| sge0gerpmpt | ⊢ (𝜑 → 𝐶 ≤ (Σ^‘(𝑥 ∈ 𝐴 ↦ 𝐵))) | 
| Step | Hyp | Ref | Expression | 
|---|---|---|---|
| 1 | sge0gerpmpt.a | . 2 ⊢ (𝜑 → 𝐴 ∈ 𝑉) | |
| 2 | sge0gerpmpt.xph | . . 3 ⊢ Ⅎ𝑥𝜑 | |
| 3 | sge0gerpmpt.b | . . 3 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝐵 ∈ (0[,]+∞)) | |
| 4 | eqid 2736 | . . 3 ⊢ (𝑥 ∈ 𝐴 ↦ 𝐵) = (𝑥 ∈ 𝐴 ↦ 𝐵) | |
| 5 | 2, 3, 4 | fmptdf 7136 | . 2 ⊢ (𝜑 → (𝑥 ∈ 𝐴 ↦ 𝐵):𝐴⟶(0[,]+∞)) | 
| 6 | sge0gerpmpt.c | . 2 ⊢ (𝜑 → 𝐶 ∈ ℝ*) | |
| 7 | sge0gerpmpt.rp | . . 3 ⊢ ((𝜑 ∧ 𝑦 ∈ ℝ+) → ∃𝑧 ∈ (𝒫 𝐴 ∩ Fin)𝐶 ≤ ((Σ^‘(𝑥 ∈ 𝑧 ↦ 𝐵)) +𝑒 𝑦)) | |
| 8 | elpwinss 45059 | . . . . . . . . . . 11 ⊢ (𝑧 ∈ (𝒫 𝐴 ∩ Fin) → 𝑧 ⊆ 𝐴) | |
| 9 | 8 | resmptd 6057 | . . . . . . . . . 10 ⊢ (𝑧 ∈ (𝒫 𝐴 ∩ Fin) → ((𝑥 ∈ 𝐴 ↦ 𝐵) ↾ 𝑧) = (𝑥 ∈ 𝑧 ↦ 𝐵)) | 
| 10 | 9 | eqcomd 2742 | . . . . . . . . 9 ⊢ (𝑧 ∈ (𝒫 𝐴 ∩ Fin) → (𝑥 ∈ 𝑧 ↦ 𝐵) = ((𝑥 ∈ 𝐴 ↦ 𝐵) ↾ 𝑧)) | 
| 11 | 10 | fveq2d 6909 | . . . . . . . 8 ⊢ (𝑧 ∈ (𝒫 𝐴 ∩ Fin) → (Σ^‘(𝑥 ∈ 𝑧 ↦ 𝐵)) = (Σ^‘((𝑥 ∈ 𝐴 ↦ 𝐵) ↾ 𝑧))) | 
| 12 | 11 | oveq1d 7447 | . . . . . . 7 ⊢ (𝑧 ∈ (𝒫 𝐴 ∩ Fin) → ((Σ^‘(𝑥 ∈ 𝑧 ↦ 𝐵)) +𝑒 𝑦) = ((Σ^‘((𝑥 ∈ 𝐴 ↦ 𝐵) ↾ 𝑧)) +𝑒 𝑦)) | 
| 13 | 12 | breq2d 5154 | . . . . . 6 ⊢ (𝑧 ∈ (𝒫 𝐴 ∩ Fin) → (𝐶 ≤ ((Σ^‘(𝑥 ∈ 𝑧 ↦ 𝐵)) +𝑒 𝑦) ↔ 𝐶 ≤ ((Σ^‘((𝑥 ∈ 𝐴 ↦ 𝐵) ↾ 𝑧)) +𝑒 𝑦))) | 
| 14 | 13 | biimpd 229 | . . . . 5 ⊢ (𝑧 ∈ (𝒫 𝐴 ∩ Fin) → (𝐶 ≤ ((Σ^‘(𝑥 ∈ 𝑧 ↦ 𝐵)) +𝑒 𝑦) → 𝐶 ≤ ((Σ^‘((𝑥 ∈ 𝐴 ↦ 𝐵) ↾ 𝑧)) +𝑒 𝑦))) | 
| 15 | 14 | adantl 481 | . . . 4 ⊢ (((𝜑 ∧ 𝑦 ∈ ℝ+) ∧ 𝑧 ∈ (𝒫 𝐴 ∩ Fin)) → (𝐶 ≤ ((Σ^‘(𝑥 ∈ 𝑧 ↦ 𝐵)) +𝑒 𝑦) → 𝐶 ≤ ((Σ^‘((𝑥 ∈ 𝐴 ↦ 𝐵) ↾ 𝑧)) +𝑒 𝑦))) | 
| 16 | 15 | reximdva 3167 | . . 3 ⊢ ((𝜑 ∧ 𝑦 ∈ ℝ+) → (∃𝑧 ∈ (𝒫 𝐴 ∩ Fin)𝐶 ≤ ((Σ^‘(𝑥 ∈ 𝑧 ↦ 𝐵)) +𝑒 𝑦) → ∃𝑧 ∈ (𝒫 𝐴 ∩ Fin)𝐶 ≤ ((Σ^‘((𝑥 ∈ 𝐴 ↦ 𝐵) ↾ 𝑧)) +𝑒 𝑦))) | 
| 17 | 7, 16 | mpd 15 | . 2 ⊢ ((𝜑 ∧ 𝑦 ∈ ℝ+) → ∃𝑧 ∈ (𝒫 𝐴 ∩ Fin)𝐶 ≤ ((Σ^‘((𝑥 ∈ 𝐴 ↦ 𝐵) ↾ 𝑧)) +𝑒 𝑦)) | 
| 18 | 1, 5, 6, 17 | sge0gerp 46415 | 1 ⊢ (𝜑 → 𝐶 ≤ (Σ^‘(𝑥 ∈ 𝐴 ↦ 𝐵))) | 
| Colors of variables: wff setvar class | 
| Syntax hints: → wi 4 ∧ wa 395 Ⅎwnf 1782 ∈ wcel 2107 ∃wrex 3069 ∩ cin 3949 𝒫 cpw 4599 class class class wbr 5142 ↦ cmpt 5224 ↾ cres 5686 ‘cfv 6560 (class class class)co 7432 Fincfn 8986 0cc0 11156 +∞cpnf 11293 ℝ*cxr 11295 ≤ cle 11297 ℝ+crp 13035 +𝑒 cxad 13153 [,]cicc 13391 Σ^csumge0 46382 | 
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1794 ax-4 1808 ax-5 1909 ax-6 1966 ax-7 2006 ax-8 2109 ax-9 2117 ax-10 2140 ax-11 2156 ax-12 2176 ax-ext 2707 ax-rep 5278 ax-sep 5295 ax-nul 5305 ax-pow 5364 ax-pr 5431 ax-un 7756 ax-inf2 9682 ax-cnex 11212 ax-resscn 11213 ax-1cn 11214 ax-icn 11215 ax-addcl 11216 ax-addrcl 11217 ax-mulcl 11218 ax-mulrcl 11219 ax-mulcom 11220 ax-addass 11221 ax-mulass 11222 ax-distr 11223 ax-i2m1 11224 ax-1ne0 11225 ax-1rid 11226 ax-rnegex 11227 ax-rrecex 11228 ax-cnre 11229 ax-pre-lttri 11230 ax-pre-lttrn 11231 ax-pre-ltadd 11232 ax-pre-mulgt0 11233 ax-pre-sup 11234 | 
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1542 df-fal 1552 df-ex 1779 df-nf 1783 df-sb 2064 df-mo 2539 df-eu 2568 df-clab 2714 df-cleq 2728 df-clel 2815 df-nfc 2891 df-ne 2940 df-nel 3046 df-ral 3061 df-rex 3070 df-rmo 3379 df-reu 3380 df-rab 3436 df-v 3481 df-sbc 3788 df-csb 3899 df-dif 3953 df-un 3955 df-in 3957 df-ss 3967 df-pss 3970 df-nul 4333 df-if 4525 df-pw 4601 df-sn 4626 df-pr 4628 df-op 4632 df-uni 4907 df-int 4946 df-iun 4992 df-br 5143 df-opab 5205 df-mpt 5225 df-tr 5259 df-id 5577 df-eprel 5583 df-po 5591 df-so 5592 df-fr 5636 df-se 5637 df-we 5638 df-xp 5690 df-rel 5691 df-cnv 5692 df-co 5693 df-dm 5694 df-rn 5695 df-res 5696 df-ima 5697 df-pred 6320 df-ord 6386 df-on 6387 df-lim 6388 df-suc 6389 df-iota 6513 df-fun 6562 df-fn 6563 df-f 6564 df-f1 6565 df-fo 6566 df-f1o 6567 df-fv 6568 df-isom 6569 df-riota 7389 df-ov 7435 df-oprab 7436 df-mpo 7437 df-om 7889 df-1st 8015 df-2nd 8016 df-frecs 8307 df-wrecs 8338 df-recs 8412 df-rdg 8451 df-1o 8507 df-er 8746 df-en 8987 df-dom 8988 df-sdom 8989 df-fin 8990 df-sup 9483 df-oi 9551 df-card 9980 df-pnf 11298 df-mnf 11299 df-xr 11300 df-ltxr 11301 df-le 11302 df-sub 11495 df-neg 11496 df-div 11922 df-nn 12268 df-2 12330 df-3 12331 df-n0 12529 df-z 12616 df-uz 12880 df-rp 13036 df-xadd 13156 df-ico 13394 df-icc 13395 df-fz 13549 df-fzo 13696 df-seq 14044 df-exp 14104 df-hash 14371 df-cj 15139 df-re 15140 df-im 15141 df-sqrt 15275 df-abs 15276 df-clim 15525 df-sum 15724 df-sumge0 46383 | 
| This theorem is referenced by: sge0iunmptlemre 46435 | 
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