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| Mirrors > Home > MPE Home > Th. List > itg2i1fseq3 | Structured version Visualization version GIF version | ||
| Description: Special case of itg2i1fseq2 25876: if the integral of 𝐹 is a real number, then the standard limit relation holds on the integrals of simple functions approaching 𝐹. (Contributed by Mario Carneiro, 17-Aug-2014.) |
| Ref | Expression |
|---|---|
| itg2i1fseq.1 | ⊢ (𝜑 → 𝐹 ∈ MblFn) |
| itg2i1fseq.2 | ⊢ (𝜑 → 𝐹:ℝ⟶(0[,)+∞)) |
| itg2i1fseq.3 | ⊢ (𝜑 → 𝑃:ℕ⟶dom ∫1) |
| itg2i1fseq.4 | ⊢ (𝜑 → ∀𝑛 ∈ ℕ (0𝑝 ∘r ≤ (𝑃‘𝑛) ∧ (𝑃‘𝑛) ∘r ≤ (𝑃‘(𝑛 + 1)))) |
| itg2i1fseq.5 | ⊢ (𝜑 → ∀𝑥 ∈ ℝ (𝑛 ∈ ℕ ↦ ((𝑃‘𝑛)‘𝑥)) ⇝ (𝐹‘𝑥)) |
| itg2i1fseq.6 | ⊢ 𝑆 = (𝑚 ∈ ℕ ↦ (∫1‘(𝑃‘𝑚))) |
| itg2i1fseq3.7 | ⊢ (𝜑 → (∫2‘𝐹) ∈ ℝ) |
| Ref | Expression |
|---|---|
| itg2i1fseq3 | ⊢ (𝜑 → 𝑆 ⇝ (∫2‘𝐹)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | itg2i1fseq.1 | . 2 ⊢ (𝜑 → 𝐹 ∈ MblFn) | |
| 2 | itg2i1fseq.2 | . 2 ⊢ (𝜑 → 𝐹:ℝ⟶(0[,)+∞)) | |
| 3 | itg2i1fseq.3 | . 2 ⊢ (𝜑 → 𝑃:ℕ⟶dom ∫1) | |
| 4 | itg2i1fseq.4 | . 2 ⊢ (𝜑 → ∀𝑛 ∈ ℕ (0𝑝 ∘r ≤ (𝑃‘𝑛) ∧ (𝑃‘𝑛) ∘r ≤ (𝑃‘(𝑛 + 1)))) | |
| 5 | itg2i1fseq.5 | . 2 ⊢ (𝜑 → ∀𝑥 ∈ ℝ (𝑛 ∈ ℕ ↦ ((𝑃‘𝑛)‘𝑥)) ⇝ (𝐹‘𝑥)) | |
| 6 | itg2i1fseq.6 | . 2 ⊢ 𝑆 = (𝑚 ∈ ℕ ↦ (∫1‘(𝑃‘𝑚))) | |
| 7 | itg2i1fseq3.7 | . 2 ⊢ (𝜑 → (∫2‘𝐹) ∈ ℝ) | |
| 8 | icossicc 13454 | . . . . 5 ⊢ (0[,)+∞) ⊆ (0[,]+∞) | |
| 9 | fss 6712 | . . . . 5 ⊢ ((𝐹:ℝ⟶(0[,)+∞) ∧ (0[,)+∞) ⊆ (0[,]+∞)) → 𝐹:ℝ⟶(0[,]+∞)) | |
| 10 | 2, 8, 9 | sylancl 597 | . . . 4 ⊢ (𝜑 → 𝐹:ℝ⟶(0[,]+∞)) |
| 11 | 10 | adantr 485 | . . 3 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → 𝐹:ℝ⟶(0[,]+∞)) |
| 12 | 3 | ffvelcdmda 7069 | . . 3 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (𝑃‘𝑘) ∈ dom ∫1) |
| 13 | 1, 2, 3, 4, 5 | itg2i1fseqle 25874 | . . 3 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (𝑃‘𝑘) ∘r ≤ 𝐹) |
| 14 | itg2ub 25853 | . . 3 ⊢ ((𝐹:ℝ⟶(0[,]+∞) ∧ (𝑃‘𝑘) ∈ dom ∫1 ∧ (𝑃‘𝑘) ∘r ≤ 𝐹) → (∫1‘(𝑃‘𝑘)) ≤ (∫2‘𝐹)) | |
| 15 | 11, 12, 13, 14 | syl3anc 1394 | . 2 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (∫1‘(𝑃‘𝑘)) ≤ (∫2‘𝐹)) |
| 16 | 1, 2, 3, 4, 5, 6, 7, 15 | itg2i1fseq2 25876 | 1 ⊢ (𝜑 → 𝑆 ⇝ (∫2‘𝐹)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 400 = wceq 1563 ∈ wcel 2145 ∀wral 3079 ⊆ wss 3907 class class class wbr 5105 ↦ cmpt 5186 dom cdm 5652 ⟶wf 6521 ‘cfv 6525 (class class class)co 7400 ∘r cofr 7663 ℝcr 11087 0cc0 11088 1c1 11089 + caddc 11091 +∞cpnf 11228 ≤ cle 11232 ℕcn 12224 [,)cico 13365 [,]cicc 13366 ⇝ cli 15525 MblFncmbf 25734 ∫1citg1 25735 ∫2citg2 25736 0𝑝c0p 25789 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1818 ax-4 1832 ax-5 1933 ax-6 1990 ax-7 2031 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2215 ax-ext 2737 ax-rep 5232 ax-sep 5251 ax-nul 5261 ax-pow 5327 ax-pr 5395 ax-un 7722 ax-inf2 9598 ax-cc 10407 ax-cnex 11144 ax-resscn 11145 ax-1cn 11146 ax-icn 11147 ax-addcl 11148 ax-addrcl 11149 ax-mulcl 11150 ax-mulrcl 11151 ax-mulcom 11152 ax-addass 11153 ax-mulass 11154 ax-distr 11155 ax-i2m1 11156 ax-1ne0 11157 ax-1rid 11158 ax-rnegex 11159 ax-rrecex 11160 ax-cnre 11161 ax-pre-lttri 11162 ax-pre-lttrn 11163 ax-pre-ltadd 11164 ax-pre-mulgt0 11165 ax-pre-sup 11166 ax-addf 11167 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1102 df-3an 1103 df-tru 1566 df-fal 1576 df-ex 1803 df-nf 1807 df-sb 2094 df-mo 2569 df-eu 2599 df-clab 2744 df-cleq 2757 df-clel 2840 df-nfc 2914 df-ne 2961 df-nel 3065 df-ral 3080 df-rex 3090 df-rmo 3370 df-reu 3371 df-rab 3418 df-v 3459 df-sbc 3748 df-csb 3856 df-dif 3910 df-un 3912 df-in 3914 df-ss 3924 df-pss 3927 df-nul 4289 df-if 4484 df-pw 4560 df-sn 4586 df-pr 4588 df-op 4592 df-uni 4869 df-int 4909 df-iun 4954 df-disj 5073 df-br 5106 df-opab 5168 df-mpt 5187 df-tr 5213 df-id 5547 df-eprel 5552 df-po 5560 df-so 5561 df-fr 5605 df-se 5606 df-we 5607 df-xp 5658 df-rel 5659 df-cnv 5660 df-co 5661 df-dm 5662 df-rn 5663 df-res 5664 df-ima 5665 df-pred 6292 df-ord 6353 df-on 6354 df-lim 6355 df-suc 6356 df-iota 6481 df-fun 6527 df-fn 6528 df-f 6529 df-f1 6530 df-fo 6531 df-f1o 6532 df-fv 6533 df-isom 6534 df-riota 7357 df-ov 7403 df-oprab 7404 df-mpo 7405 df-of 7664 df-ofr 7665 df-om 7851 df-1st 7974 df-2nd 7975 df-frecs 8266 df-wrecs 8297 df-recs 8346 df-rdg 8385 df-1o 8441 df-2o 8442 df-oadd 8445 df-omul 8446 df-er 8682 df-map 8814 df-pm 8815 df-en 8932 df-dom 8933 df-sdom 8934 df-fin 8935 df-fi 9359 df-sup 9390 df-inf 9391 df-oi 9460 df-dju 9875 df-card 9913 df-acn 9916 df-pnf 11233 df-mnf 11234 df-xr 11235 df-ltxr 11236 df-le 11237 df-sub 11431 df-neg 11432 df-div 11860 df-nn 12225 df-2 12294 df-3 12295 df-n0 12496 df-z 12583 df-uz 12854 df-q 12964 df-rp 13008 df-xneg 13128 df-xadd 13129 df-xmul 13130 df-ioo 13367 df-ioc 13368 df-ico 13369 df-icc 13370 df-fz 13527 df-fzo 13674 df-fl 13816 df-seq 14029 df-exp 14089 df-hash 14358 df-cj 15140 df-re 15141 df-im 15142 df-sqrt 15276 df-abs 15277 df-clim 15529 df-rlim 15530 df-sum 15728 df-rest 17465 df-topgen 17486 df-psmet 21474 df-xmet 21475 df-met 21476 df-bl 21477 df-mopn 21478 df-top 23012 df-topon 23029 df-bases 23064 df-cmp 23505 df-ovol 25584 df-vol 25585 df-mbf 25739 df-itg1 25740 df-itg2 25741 df-0p 25790 |
| This theorem is referenced by: itg2addlem 25878 |
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