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Mirrors > Home > MPE Home > Th. List > itg2leub | Structured version Visualization version GIF version |
Description: Any upper bound on the integrals of all simple functions 𝐺 dominated by 𝐹 is greater than (∫2‘𝐹), the least upper bound. (Contributed by Mario Carneiro, 28-Jun-2014.) |
Ref | Expression |
---|---|
itg2leub | ⊢ ((𝐹:ℝ⟶(0[,]+∞) ∧ 𝐴 ∈ ℝ*) → ((∫2‘𝐹) ≤ 𝐴 ↔ ∀𝑔 ∈ dom ∫1(𝑔 ∘r ≤ 𝐹 → (∫1‘𝑔) ≤ 𝐴))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | eqid 2738 | . . . . 5 ⊢ {𝑥 ∣ ∃𝑔 ∈ dom ∫1(𝑔 ∘r ≤ 𝐹 ∧ 𝑥 = (∫1‘𝑔))} = {𝑥 ∣ ∃𝑔 ∈ dom ∫1(𝑔 ∘r ≤ 𝐹 ∧ 𝑥 = (∫1‘𝑔))} | |
2 | 1 | itg2val 24893 | . . . 4 ⊢ (𝐹:ℝ⟶(0[,]+∞) → (∫2‘𝐹) = sup({𝑥 ∣ ∃𝑔 ∈ dom ∫1(𝑔 ∘r ≤ 𝐹 ∧ 𝑥 = (∫1‘𝑔))}, ℝ*, < )) |
3 | 2 | adantr 481 | . . 3 ⊢ ((𝐹:ℝ⟶(0[,]+∞) ∧ 𝐴 ∈ ℝ*) → (∫2‘𝐹) = sup({𝑥 ∣ ∃𝑔 ∈ dom ∫1(𝑔 ∘r ≤ 𝐹 ∧ 𝑥 = (∫1‘𝑔))}, ℝ*, < )) |
4 | 3 | breq1d 5084 | . 2 ⊢ ((𝐹:ℝ⟶(0[,]+∞) ∧ 𝐴 ∈ ℝ*) → ((∫2‘𝐹) ≤ 𝐴 ↔ sup({𝑥 ∣ ∃𝑔 ∈ dom ∫1(𝑔 ∘r ≤ 𝐹 ∧ 𝑥 = (∫1‘𝑔))}, ℝ*, < ) ≤ 𝐴)) |
5 | 1 | itg2lcl 24892 | . . . . 5 ⊢ {𝑥 ∣ ∃𝑔 ∈ dom ∫1(𝑔 ∘r ≤ 𝐹 ∧ 𝑥 = (∫1‘𝑔))} ⊆ ℝ* |
6 | supxrleub 13060 | . . . . 5 ⊢ (({𝑥 ∣ ∃𝑔 ∈ dom ∫1(𝑔 ∘r ≤ 𝐹 ∧ 𝑥 = (∫1‘𝑔))} ⊆ ℝ* ∧ 𝐴 ∈ ℝ*) → (sup({𝑥 ∣ ∃𝑔 ∈ dom ∫1(𝑔 ∘r ≤ 𝐹 ∧ 𝑥 = (∫1‘𝑔))}, ℝ*, < ) ≤ 𝐴 ↔ ∀𝑧 ∈ {𝑥 ∣ ∃𝑔 ∈ dom ∫1(𝑔 ∘r ≤ 𝐹 ∧ 𝑥 = (∫1‘𝑔))}𝑧 ≤ 𝐴)) | |
7 | 5, 6 | mpan 687 | . . . 4 ⊢ (𝐴 ∈ ℝ* → (sup({𝑥 ∣ ∃𝑔 ∈ dom ∫1(𝑔 ∘r ≤ 𝐹 ∧ 𝑥 = (∫1‘𝑔))}, ℝ*, < ) ≤ 𝐴 ↔ ∀𝑧 ∈ {𝑥 ∣ ∃𝑔 ∈ dom ∫1(𝑔 ∘r ≤ 𝐹 ∧ 𝑥 = (∫1‘𝑔))}𝑧 ≤ 𝐴)) |
8 | 7 | adantl 482 | . . 3 ⊢ ((𝐹:ℝ⟶(0[,]+∞) ∧ 𝐴 ∈ ℝ*) → (sup({𝑥 ∣ ∃𝑔 ∈ dom ∫1(𝑔 ∘r ≤ 𝐹 ∧ 𝑥 = (∫1‘𝑔))}, ℝ*, < ) ≤ 𝐴 ↔ ∀𝑧 ∈ {𝑥 ∣ ∃𝑔 ∈ dom ∫1(𝑔 ∘r ≤ 𝐹 ∧ 𝑥 = (∫1‘𝑔))}𝑧 ≤ 𝐴)) |
9 | eqeq1 2742 | . . . . . . 7 ⊢ (𝑥 = 𝑧 → (𝑥 = (∫1‘𝑔) ↔ 𝑧 = (∫1‘𝑔))) | |
10 | 9 | anbi2d 629 | . . . . . 6 ⊢ (𝑥 = 𝑧 → ((𝑔 ∘r ≤ 𝐹 ∧ 𝑥 = (∫1‘𝑔)) ↔ (𝑔 ∘r ≤ 𝐹 ∧ 𝑧 = (∫1‘𝑔)))) |
11 | 10 | rexbidv 3226 | . . . . 5 ⊢ (𝑥 = 𝑧 → (∃𝑔 ∈ dom ∫1(𝑔 ∘r ≤ 𝐹 ∧ 𝑥 = (∫1‘𝑔)) ↔ ∃𝑔 ∈ dom ∫1(𝑔 ∘r ≤ 𝐹 ∧ 𝑧 = (∫1‘𝑔)))) |
12 | 11 | ralab 3628 | . . . 4 ⊢ (∀𝑧 ∈ {𝑥 ∣ ∃𝑔 ∈ dom ∫1(𝑔 ∘r ≤ 𝐹 ∧ 𝑥 = (∫1‘𝑔))}𝑧 ≤ 𝐴 ↔ ∀𝑧(∃𝑔 ∈ dom ∫1(𝑔 ∘r ≤ 𝐹 ∧ 𝑧 = (∫1‘𝑔)) → 𝑧 ≤ 𝐴)) |
13 | r19.23v 3208 | . . . . . . 7 ⊢ (∀𝑔 ∈ dom ∫1((𝑔 ∘r ≤ 𝐹 ∧ 𝑧 = (∫1‘𝑔)) → 𝑧 ≤ 𝐴) ↔ (∃𝑔 ∈ dom ∫1(𝑔 ∘r ≤ 𝐹 ∧ 𝑧 = (∫1‘𝑔)) → 𝑧 ≤ 𝐴)) | |
14 | ancomst 465 | . . . . . . . . 9 ⊢ (((𝑔 ∘r ≤ 𝐹 ∧ 𝑧 = (∫1‘𝑔)) → 𝑧 ≤ 𝐴) ↔ ((𝑧 = (∫1‘𝑔) ∧ 𝑔 ∘r ≤ 𝐹) → 𝑧 ≤ 𝐴)) | |
15 | impexp 451 | . . . . . . . . 9 ⊢ (((𝑧 = (∫1‘𝑔) ∧ 𝑔 ∘r ≤ 𝐹) → 𝑧 ≤ 𝐴) ↔ (𝑧 = (∫1‘𝑔) → (𝑔 ∘r ≤ 𝐹 → 𝑧 ≤ 𝐴))) | |
16 | 14, 15 | bitri 274 | . . . . . . . 8 ⊢ (((𝑔 ∘r ≤ 𝐹 ∧ 𝑧 = (∫1‘𝑔)) → 𝑧 ≤ 𝐴) ↔ (𝑧 = (∫1‘𝑔) → (𝑔 ∘r ≤ 𝐹 → 𝑧 ≤ 𝐴))) |
17 | 16 | ralbii 3092 | . . . . . . 7 ⊢ (∀𝑔 ∈ dom ∫1((𝑔 ∘r ≤ 𝐹 ∧ 𝑧 = (∫1‘𝑔)) → 𝑧 ≤ 𝐴) ↔ ∀𝑔 ∈ dom ∫1(𝑧 = (∫1‘𝑔) → (𝑔 ∘r ≤ 𝐹 → 𝑧 ≤ 𝐴))) |
18 | 13, 17 | bitr3i 276 | . . . . . 6 ⊢ ((∃𝑔 ∈ dom ∫1(𝑔 ∘r ≤ 𝐹 ∧ 𝑧 = (∫1‘𝑔)) → 𝑧 ≤ 𝐴) ↔ ∀𝑔 ∈ dom ∫1(𝑧 = (∫1‘𝑔) → (𝑔 ∘r ≤ 𝐹 → 𝑧 ≤ 𝐴))) |
19 | 18 | albii 1822 | . . . . 5 ⊢ (∀𝑧(∃𝑔 ∈ dom ∫1(𝑔 ∘r ≤ 𝐹 ∧ 𝑧 = (∫1‘𝑔)) → 𝑧 ≤ 𝐴) ↔ ∀𝑧∀𝑔 ∈ dom ∫1(𝑧 = (∫1‘𝑔) → (𝑔 ∘r ≤ 𝐹 → 𝑧 ≤ 𝐴))) |
20 | ralcom4 3164 | . . . . . 6 ⊢ (∀𝑔 ∈ dom ∫1∀𝑧(𝑧 = (∫1‘𝑔) → (𝑔 ∘r ≤ 𝐹 → 𝑧 ≤ 𝐴)) ↔ ∀𝑧∀𝑔 ∈ dom ∫1(𝑧 = (∫1‘𝑔) → (𝑔 ∘r ≤ 𝐹 → 𝑧 ≤ 𝐴))) | |
21 | fvex 6787 | . . . . . . . 8 ⊢ (∫1‘𝑔) ∈ V | |
22 | breq1 5077 | . . . . . . . . 9 ⊢ (𝑧 = (∫1‘𝑔) → (𝑧 ≤ 𝐴 ↔ (∫1‘𝑔) ≤ 𝐴)) | |
23 | 22 | imbi2d 341 | . . . . . . . 8 ⊢ (𝑧 = (∫1‘𝑔) → ((𝑔 ∘r ≤ 𝐹 → 𝑧 ≤ 𝐴) ↔ (𝑔 ∘r ≤ 𝐹 → (∫1‘𝑔) ≤ 𝐴))) |
24 | 21, 23 | ceqsalv 3467 | . . . . . . 7 ⊢ (∀𝑧(𝑧 = (∫1‘𝑔) → (𝑔 ∘r ≤ 𝐹 → 𝑧 ≤ 𝐴)) ↔ (𝑔 ∘r ≤ 𝐹 → (∫1‘𝑔) ≤ 𝐴)) |
25 | 24 | ralbii 3092 | . . . . . 6 ⊢ (∀𝑔 ∈ dom ∫1∀𝑧(𝑧 = (∫1‘𝑔) → (𝑔 ∘r ≤ 𝐹 → 𝑧 ≤ 𝐴)) ↔ ∀𝑔 ∈ dom ∫1(𝑔 ∘r ≤ 𝐹 → (∫1‘𝑔) ≤ 𝐴)) |
26 | 20, 25 | bitr3i 276 | . . . . 5 ⊢ (∀𝑧∀𝑔 ∈ dom ∫1(𝑧 = (∫1‘𝑔) → (𝑔 ∘r ≤ 𝐹 → 𝑧 ≤ 𝐴)) ↔ ∀𝑔 ∈ dom ∫1(𝑔 ∘r ≤ 𝐹 → (∫1‘𝑔) ≤ 𝐴)) |
27 | 19, 26 | bitri 274 | . . . 4 ⊢ (∀𝑧(∃𝑔 ∈ dom ∫1(𝑔 ∘r ≤ 𝐹 ∧ 𝑧 = (∫1‘𝑔)) → 𝑧 ≤ 𝐴) ↔ ∀𝑔 ∈ dom ∫1(𝑔 ∘r ≤ 𝐹 → (∫1‘𝑔) ≤ 𝐴)) |
28 | 12, 27 | bitri 274 | . . 3 ⊢ (∀𝑧 ∈ {𝑥 ∣ ∃𝑔 ∈ dom ∫1(𝑔 ∘r ≤ 𝐹 ∧ 𝑥 = (∫1‘𝑔))}𝑧 ≤ 𝐴 ↔ ∀𝑔 ∈ dom ∫1(𝑔 ∘r ≤ 𝐹 → (∫1‘𝑔) ≤ 𝐴)) |
29 | 8, 28 | bitrdi 287 | . 2 ⊢ ((𝐹:ℝ⟶(0[,]+∞) ∧ 𝐴 ∈ ℝ*) → (sup({𝑥 ∣ ∃𝑔 ∈ dom ∫1(𝑔 ∘r ≤ 𝐹 ∧ 𝑥 = (∫1‘𝑔))}, ℝ*, < ) ≤ 𝐴 ↔ ∀𝑔 ∈ dom ∫1(𝑔 ∘r ≤ 𝐹 → (∫1‘𝑔) ≤ 𝐴))) |
30 | 4, 29 | bitrd 278 | 1 ⊢ ((𝐹:ℝ⟶(0[,]+∞) ∧ 𝐴 ∈ ℝ*) → ((∫2‘𝐹) ≤ 𝐴 ↔ ∀𝑔 ∈ dom ∫1(𝑔 ∘r ≤ 𝐹 → (∫1‘𝑔) ≤ 𝐴))) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 205 ∧ wa 396 ∀wal 1537 = wceq 1539 ∈ wcel 2106 {cab 2715 ∀wral 3064 ∃wrex 3065 ⊆ wss 3887 class class class wbr 5074 dom cdm 5589 ⟶wf 6429 ‘cfv 6433 (class class class)co 7275 ∘r cofr 7532 supcsup 9199 ℝcr 10870 0cc0 10871 +∞cpnf 11006 ℝ*cxr 11008 < clt 11009 ≤ cle 11010 [,]cicc 13082 ∫1citg1 24779 ∫2citg2 24780 |
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-of 7533 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-2o 8298 df-er 8498 df-map 8617 df-pm 8618 df-en 8734 df-dom 8735 df-sdom 8736 df-fin 8737 df-sup 9201 df-inf 9202 df-oi 9269 df-dju 9659 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-q 12689 df-rp 12731 df-xadd 12849 df-ioo 13083 df-ico 13085 df-icc 13086 df-fz 13240 df-fzo 13383 df-fl 13512 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-xmet 20590 df-met 20591 df-ovol 24628 df-vol 24629 df-mbf 24783 df-itg1 24784 df-itg2 24785 |
This theorem is referenced by: itg2itg1 24901 itg2le 24904 itg2seq 24907 itg2lea 24909 itg2mulclem 24911 itg2splitlem 24913 itg2split 24914 itg2mono 24918 ftc1anclem5 35854 |
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