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| Mirrors > Home > MPE Home > Th. List > itg2le | Structured version Visualization version GIF version | ||
| Description: If one function dominates another, then the integral of the larger is also larger. (Contributed by Mario Carneiro, 28-Jun-2014.) |
| Ref | Expression |
|---|---|
| itg2le | ⊢ ((𝐹:ℝ⟶(0[,]+∞) ∧ 𝐺:ℝ⟶(0[,]+∞) ∧ 𝐹 ∘r ≤ 𝐺) → (∫2‘𝐹) ≤ (∫2‘𝐺)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | reex 11263 | . . . . . . . . . 10 ⊢ ℝ ∈ V | |
| 2 | 1 | a1i 11 | . . . . . . . . 9 ⊢ (((𝐹:ℝ⟶(0[,]+∞) ∧ 𝐺:ℝ⟶(0[,]+∞)) ∧ ℎ ∈ dom ∫1) → ℝ ∈ V) |
| 3 | i1ff 25959 | . . . . . . . . . . 11 ⊢ (ℎ ∈ dom ∫1 → ℎ:ℝ⟶ℝ) | |
| 4 | 3 | adantl 487 | . . . . . . . . . 10 ⊢ (((𝐹:ℝ⟶(0[,]+∞) ∧ 𝐺:ℝ⟶(0[,]+∞)) ∧ ℎ ∈ dom ∫1) → ℎ:ℝ⟶ℝ) |
| 5 | ressxr 11325 | . . . . . . . . . 10 ⊢ ℝ ⊆ ℝ* | |
| 6 | fss 6714 | . . . . . . . . . 10 ⊢ ((ℎ:ℝ⟶ℝ ∧ ℝ ⊆ ℝ*) → ℎ:ℝ⟶ℝ*) | |
| 7 | 4, 5, 6 | sylancl 598 | . . . . . . . . 9 ⊢ (((𝐹:ℝ⟶(0[,]+∞) ∧ 𝐺:ℝ⟶(0[,]+∞)) ∧ ℎ ∈ dom ∫1) → ℎ:ℝ⟶ℝ*) |
| 8 | simpll 779 | . . . . . . . . . 10 ⊢ (((𝐹:ℝ⟶(0[,]+∞) ∧ 𝐺:ℝ⟶(0[,]+∞)) ∧ ℎ ∈ dom ∫1) → 𝐹:ℝ⟶(0[,]+∞)) | |
| 9 | iccssxr 13531 | . . . . . . . . . 10 ⊢ (0[,]+∞) ⊆ ℝ* | |
| 10 | fss 6714 | . . . . . . . . . 10 ⊢ ((𝐹:ℝ⟶(0[,]+∞) ∧ (0[,]+∞) ⊆ ℝ*) → 𝐹:ℝ⟶ℝ*) | |
| 11 | 8, 9, 10 | sylancl 598 | . . . . . . . . 9 ⊢ (((𝐹:ℝ⟶(0[,]+∞) ∧ 𝐺:ℝ⟶(0[,]+∞)) ∧ ℎ ∈ dom ∫1) → 𝐹:ℝ⟶ℝ*) |
| 12 | simplr 781 | . . . . . . . . . 10 ⊢ (((𝐹:ℝ⟶(0[,]+∞) ∧ 𝐺:ℝ⟶(0[,]+∞)) ∧ ℎ ∈ dom ∫1) → 𝐺:ℝ⟶(0[,]+∞)) | |
| 13 | fss 6714 | . . . . . . . . . 10 ⊢ ((𝐺:ℝ⟶(0[,]+∞) ∧ (0[,]+∞) ⊆ ℝ*) → 𝐺:ℝ⟶ℝ*) | |
| 14 | 12, 9, 13 | sylancl 598 | . . . . . . . . 9 ⊢ (((𝐹:ℝ⟶(0[,]+∞) ∧ 𝐺:ℝ⟶(0[,]+∞)) ∧ ℎ ∈ dom ∫1) → 𝐺:ℝ⟶ℝ*) |
| 15 | xrletr 13257 | . . . . . . . . . 10 ⊢ ((𝑥 ∈ ℝ* ∧ 𝑦 ∈ ℝ* ∧ 𝑧 ∈ ℝ*) → ((𝑥 ≤ 𝑦 ∧ 𝑦 ≤ 𝑧) → 𝑥 ≤ 𝑧)) | |
| 16 | 15 | adantl 487 | . . . . . . . . 9 ⊢ ((((𝐹:ℝ⟶(0[,]+∞) ∧ 𝐺:ℝ⟶(0[,]+∞)) ∧ ℎ ∈ dom ∫1) ∧ (𝑥 ∈ ℝ* ∧ 𝑦 ∈ ℝ* ∧ 𝑧 ∈ ℝ*)) → ((𝑥 ≤ 𝑦 ∧ 𝑦 ≤ 𝑧) → 𝑥 ≤ 𝑧)) |
| 17 | 2, 7, 11, 14, 16 | caoftrn 7717 | . . . . . . . 8 ⊢ (((𝐹:ℝ⟶(0[,]+∞) ∧ 𝐺:ℝ⟶(0[,]+∞)) ∧ ℎ ∈ dom ∫1) → ((ℎ ∘r ≤ 𝐹 ∧ 𝐹 ∘r ≤ 𝐺) → ℎ ∘r ≤ 𝐺)) |
| 18 | simplr 781 | . . . . . . . . . 10 ⊢ (((𝐹:ℝ⟶(0[,]+∞) ∧ 𝐺:ℝ⟶(0[,]+∞)) ∧ (ℎ ∈ dom ∫1 ∧ ℎ ∘r ≤ 𝐺)) → 𝐺:ℝ⟶(0[,]+∞)) | |
| 19 | simprl 783 | . . . . . . . . . 10 ⊢ (((𝐹:ℝ⟶(0[,]+∞) ∧ 𝐺:ℝ⟶(0[,]+∞)) ∧ (ℎ ∈ dom ∫1 ∧ ℎ ∘r ≤ 𝐺)) → ℎ ∈ dom ∫1) | |
| 20 | simprr 785 | . . . . . . . . . 10 ⊢ (((𝐹:ℝ⟶(0[,]+∞) ∧ 𝐺:ℝ⟶(0[,]+∞)) ∧ (ℎ ∈ dom ∫1 ∧ ℎ ∘r ≤ 𝐺)) → ℎ ∘r ≤ 𝐺) | |
| 21 | itg2ub 26016 | . . . . . . . . . 10 ⊢ ((𝐺:ℝ⟶(0[,]+∞) ∧ ℎ ∈ dom ∫1 ∧ ℎ ∘r ≤ 𝐺) → (∫1‘ℎ) ≤ (∫2‘𝐺)) | |
| 22 | 18, 19, 20, 21 | syl3anc 1398 | . . . . . . . . 9 ⊢ (((𝐹:ℝ⟶(0[,]+∞) ∧ 𝐺:ℝ⟶(0[,]+∞)) ∧ (ℎ ∈ dom ∫1 ∧ ℎ ∘r ≤ 𝐺)) → (∫1‘ℎ) ≤ (∫2‘𝐺)) |
| 23 | 22 | expr 462 | . . . . . . . 8 ⊢ (((𝐹:ℝ⟶(0[,]+∞) ∧ 𝐺:ℝ⟶(0[,]+∞)) ∧ ℎ ∈ dom ∫1) → (ℎ ∘r ≤ 𝐺 → (∫1‘ℎ) ≤ (∫2‘𝐺))) |
| 24 | 17, 23 | syld 48 | . . . . . . 7 ⊢ (((𝐹:ℝ⟶(0[,]+∞) ∧ 𝐺:ℝ⟶(0[,]+∞)) ∧ ℎ ∈ dom ∫1) → ((ℎ ∘r ≤ 𝐹 ∧ 𝐹 ∘r ≤ 𝐺) → (∫1‘ℎ) ≤ (∫2‘𝐺))) |
| 25 | 24 | ancomsd 471 | . . . . . 6 ⊢ (((𝐹:ℝ⟶(0[,]+∞) ∧ 𝐺:ℝ⟶(0[,]+∞)) ∧ ℎ ∈ dom ∫1) → ((𝐹 ∘r ≤ 𝐺 ∧ ℎ ∘r ≤ 𝐹) → (∫1‘ℎ) ≤ (∫2‘𝐺))) |
| 26 | 25 | exp4b 436 | . . . . 5 ⊢ ((𝐹:ℝ⟶(0[,]+∞) ∧ 𝐺:ℝ⟶(0[,]+∞)) → (ℎ ∈ dom ∫1 → (𝐹 ∘r ≤ 𝐺 → (ℎ ∘r ≤ 𝐹 → (∫1‘ℎ) ≤ (∫2‘𝐺))))) |
| 27 | 26 | com23 87 | . . . 4 ⊢ ((𝐹:ℝ⟶(0[,]+∞) ∧ 𝐺:ℝ⟶(0[,]+∞)) → (𝐹 ∘r ≤ 𝐺 → (ℎ ∈ dom ∫1 → (ℎ ∘r ≤ 𝐹 → (∫1‘ℎ) ≤ (∫2‘𝐺))))) |
| 28 | 27 | 3impia 1135 | . . 3 ⊢ ((𝐹:ℝ⟶(0[,]+∞) ∧ 𝐺:ℝ⟶(0[,]+∞) ∧ 𝐹 ∘r ≤ 𝐺) → (ℎ ∈ dom ∫1 → (ℎ ∘r ≤ 𝐹 → (∫1‘ℎ) ≤ (∫2‘𝐺)))) |
| 29 | 28 | ralrimiv 3153 | . 2 ⊢ ((𝐹:ℝ⟶(0[,]+∞) ∧ 𝐺:ℝ⟶(0[,]+∞) ∧ 𝐹 ∘r ≤ 𝐺) → ∀ℎ ∈ dom ∫1(ℎ ∘r ≤ 𝐹 → (∫1‘ℎ) ≤ (∫2‘𝐺))) |
| 30 | simp1 1154 | . . 3 ⊢ ((𝐹:ℝ⟶(0[,]+∞) ∧ 𝐺:ℝ⟶(0[,]+∞) ∧ 𝐹 ∘r ≤ 𝐺) → 𝐹:ℝ⟶(0[,]+∞)) | |
| 31 | itg2cl 26015 | . . . 4 ⊢ (𝐺:ℝ⟶(0[,]+∞) → (∫2‘𝐺) ∈ ℝ*) | |
| 32 | 31 | 3ad2ant2 1152 | . . 3 ⊢ ((𝐹:ℝ⟶(0[,]+∞) ∧ 𝐺:ℝ⟶(0[,]+∞) ∧ 𝐹 ∘r ≤ 𝐺) → (∫2‘𝐺) ∈ ℝ*) |
| 33 | itg2leub 26017 | . . 3 ⊢ ((𝐹:ℝ⟶(0[,]+∞) ∧ (∫2‘𝐺) ∈ ℝ*) → ((∫2‘𝐹) ≤ (∫2‘𝐺) ↔ ∀ℎ ∈ dom ∫1(ℎ ∘r ≤ 𝐹 → (∫1‘ℎ) ≤ (∫2‘𝐺)))) | |
| 34 | 30, 32, 33 | syl2anc 596 | . 2 ⊢ ((𝐹:ℝ⟶(0[,]+∞) ∧ 𝐺:ℝ⟶(0[,]+∞) ∧ 𝐹 ∘r ≤ 𝐺) → ((∫2‘𝐹) ≤ (∫2‘𝐺) ↔ ∀ℎ ∈ dom ∫1(ℎ ∘r ≤ 𝐹 → (∫1‘ℎ) ≤ (∫2‘𝐺)))) |
| 35 | 29, 34 | mpbird 260 | 1 ⊢ ((𝐹:ℝ⟶(0[,]+∞) ∧ 𝐺:ℝ⟶(0[,]+∞) ∧ 𝐹 ∘r ≤ 𝐺) → (∫2‘𝐹) ≤ (∫2‘𝐺)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ↔ wb 209 ∧ wa 401 ∧ w3a 1103 ∈ wcel 2145 ∀wral 3076 Vcvv 3450 ⊆ wss 3898 class class class wbr 5102 dom cdm 5647 ⟶wf 6523 ‘cfv 6527 (class class class)co 7408 ∘r cofr 7675 ℝcr 11171 0cc0 11172 +∞cpnf 11312 ℝ*cxr 11314 ≤ cle 11316 [,]cicc 13449 ∫1citg1 25898 ∫2citg2 25899 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2213 ax-ext 2732 ax-rep 5231 ax-sep 5248 ax-nul 5259 ax-pow 5326 ax-pr 5390 ax-un 7734 ax-inf2 9620 ax-cnex 11228 ax-resscn 11229 ax-1cn 11230 ax-icn 11231 ax-addcl 11232 ax-addrcl 11233 ax-mulcl 11234 ax-mulrcl 11235 ax-mulcom 11236 ax-addass 11237 ax-mulass 11238 ax-distr 11239 ax-i2m1 11240 ax-1ne0 11241 ax-1rid 11242 ax-rnegex 11243 ax-rrecex 11244 ax-cnre 11245 ax-pre-lttri 11246 ax-pre-lttrn 11247 ax-pre-ltadd 11248 ax-pre-mulgt0 11249 ax-pre-sup 11250 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-nel 3062 df-ral 3077 df-rex 3087 df-rmo 3365 df-reu 3366 df-rab 3413 df-v 3452 df-sbc 3739 df-csb 3847 df-dif 3901 df-un 3903 df-in 3905 df-ss 3915 df-pss 3918 df-nul 4279 df-if 4482 df-pw 4558 df-sn 4584 df-pr 4586 df-op 4590 df-uni 4867 df-int 4907 df-iun 4952 df-br 5103 df-opab 5167 df-mpt 5186 df-tr 5212 df-id 5542 df-eprel 5547 df-po 5555 df-so 5556 df-fr 5600 df-se 5601 df-we 5602 df-xp 5653 df-rel 5654 df-cnv 5655 df-co 5656 df-dm 5657 df-rn 5658 df-res 5659 df-ima 5660 df-pred 6293 df-ord 6354 df-on 6355 df-lim 6356 df-suc 6357 df-iota 6483 df-fun 6529 df-fn 6530 df-f 6531 df-f1 6532 df-fo 6533 df-f1o 6534 df-fv 6535 df-isom 6536 df-riota 7365 df-ov 7411 df-oprab 7412 df-mpo 7413 df-of 7676 df-ofr 7677 df-om 7861 df-1st 7984 df-2nd 7985 df-frecs 8277 df-wrecs 8308 df-recs 8357 df-rdg 8396 df-1o 8454 df-2o 8455 df-er 8695 df-map 8827 df-pm 8828 df-en 8952 df-dom 8953 df-sdom 8954 df-fin 8955 df-sup 9412 df-inf 9413 df-oi 9482 df-dju 9954 df-card 9992 df-pnf 11317 df-mnf 11318 df-xr 11319 df-ltxr 11320 df-le 11321 df-sub 11515 df-neg 11516 df-div 11944 df-nn 12306 df-2 12375 df-3 12376 df-n0 12577 df-z 12664 df-uz 12936 df-q 13046 df-rp 13091 df-xadd 13212 df-ioo 13450 df-ico 13452 df-icc 13453 df-fz 13610 df-fzo 13758 df-fl 13901 df-seq 14114 df-exp 14174 df-hash 14443 df-cj 15234 df-re 15235 df-im 15236 df-sqrt 15370 df-abs 15371 df-clim 15623 df-sum 15822 df-xmet 21633 df-met 21634 df-ovol 25747 df-vol 25748 df-mbf 25902 df-itg1 25903 df-itg2 25904 |
| This theorem is used by: itg2const2 26024 itg2monolem1 26033 itg2mono 26036 itg2gt0 26043 itg2cnlem2 26045 iblss 26087 itgle 26092 ibladdlem 26102 iblabs 26111 iblabsr 26112 iblmulc2 26113 bddmulibl 26121 bddiblnc 26124 itg2gt0cn 38513 ibladdnclem 38514 iblabsnc 38522 iblmulc2nc 38523 ftc1anclem4 38534 ftc1anclem6 38536 ftc1anclem7 38537 ftc1anclem8 38538 ftc1anc 38539 |
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