| Mathbox for Glauco Siliprandi |
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| Mirrors > Home > MPE Home > Th. List > Mathboxes > sublevolico | Structured version Visualization version GIF version | ||
| Description: The Lebesgue measure of a left-closed, right-open interval is greater than or equal to the difference of the two bounds. (Contributed by Glauco Siliprandi, 3-Mar-2021.) |
| Ref | Expression |
|---|---|
| sublevolico.a | ⊢ (𝜑 → 𝐴 ∈ ℝ) |
| sublevolico.b | ⊢ (𝜑 → 𝐵 ∈ ℝ) |
| Ref | Expression |
|---|---|
| sublevolico | ⊢ (𝜑 → (𝐵 − 𝐴) ≤ (vol‘(𝐴[,)𝐵))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | sublevolico.b | . . . . . 6 ⊢ (𝜑 → 𝐵 ∈ ℝ) | |
| 2 | sublevolico.a | . . . . . 6 ⊢ (𝜑 → 𝐴 ∈ ℝ) | |
| 3 | 1, 2 | resubcld 11630 | . . . . 5 ⊢ (𝜑 → (𝐵 − 𝐴) ∈ ℝ) |
| 4 | eqidd 2766 | . . . . 5 ⊢ (𝜑 → (𝐵 − 𝐴) = (𝐵 − 𝐴)) | |
| 5 | 3, 4 | eqled 11301 | . . . 4 ⊢ (𝜑 → (𝐵 − 𝐴) ≤ (𝐵 − 𝐴)) |
| 6 | 5 | adantr 485 | . . 3 ⊢ ((𝜑 ∧ 𝐴 < 𝐵) → (𝐵 − 𝐴) ≤ (𝐵 − 𝐴)) |
| 7 | volico 46556 | . . . . . 6 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (vol‘(𝐴[,)𝐵)) = if(𝐴 < 𝐵, (𝐵 − 𝐴), 0)) | |
| 8 | 2, 1, 7 | syl2anc 595 | . . . . 5 ⊢ (𝜑 → (vol‘(𝐴[,)𝐵)) = if(𝐴 < 𝐵, (𝐵 − 𝐴), 0)) |
| 9 | 8 | adantr 485 | . . . 4 ⊢ ((𝜑 ∧ 𝐴 < 𝐵) → (vol‘(𝐴[,)𝐵)) = if(𝐴 < 𝐵, (𝐵 − 𝐴), 0)) |
| 10 | iftrue 4489 | . . . . 5 ⊢ (𝐴 < 𝐵 → if(𝐴 < 𝐵, (𝐵 − 𝐴), 0) = (𝐵 − 𝐴)) | |
| 11 | 10 | adantl 486 | . . . 4 ⊢ ((𝜑 ∧ 𝐴 < 𝐵) → if(𝐴 < 𝐵, (𝐵 − 𝐴), 0) = (𝐵 − 𝐴)) |
| 12 | 9, 11 | eqtr2d 2801 | . . 3 ⊢ ((𝜑 ∧ 𝐴 < 𝐵) → (𝐵 − 𝐴) = (vol‘(𝐴[,)𝐵))) |
| 13 | 6, 12 | breqtrd 5130 | . 2 ⊢ ((𝜑 ∧ 𝐴 < 𝐵) → (𝐵 − 𝐴) ≤ (vol‘(𝐴[,)𝐵))) |
| 14 | simpr 489 | . . . . 5 ⊢ ((𝜑 ∧ ¬ 𝐴 < 𝐵) → ¬ 𝐴 < 𝐵) | |
| 15 | 1, 2 | lenltd 11344 | . . . . . 6 ⊢ (𝜑 → (𝐵 ≤ 𝐴 ↔ ¬ 𝐴 < 𝐵)) |
| 16 | 15 | adantr 485 | . . . . 5 ⊢ ((𝜑 ∧ ¬ 𝐴 < 𝐵) → (𝐵 ≤ 𝐴 ↔ ¬ 𝐴 < 𝐵)) |
| 17 | 14, 16 | mpbird 260 | . . . 4 ⊢ ((𝜑 ∧ ¬ 𝐴 < 𝐵) → 𝐵 ≤ 𝐴) |
| 18 | 1 | adantr 485 | . . . . 5 ⊢ ((𝜑 ∧ ¬ 𝐴 < 𝐵) → 𝐵 ∈ ℝ) |
| 19 | 2 | adantr 485 | . . . . 5 ⊢ ((𝜑 ∧ ¬ 𝐴 < 𝐵) → 𝐴 ∈ ℝ) |
| 20 | 18, 19 | suble0d 11793 | . . . 4 ⊢ ((𝜑 ∧ ¬ 𝐴 < 𝐵) → ((𝐵 − 𝐴) ≤ 0 ↔ 𝐵 ≤ 𝐴)) |
| 21 | 17, 20 | mpbird 260 | . . 3 ⊢ ((𝜑 ∧ ¬ 𝐴 < 𝐵) → (𝐵 − 𝐴) ≤ 0) |
| 22 | 8 | adantr 485 | . . . 4 ⊢ ((𝜑 ∧ ¬ 𝐴 < 𝐵) → (vol‘(𝐴[,)𝐵)) = if(𝐴 < 𝐵, (𝐵 − 𝐴), 0)) |
| 23 | iffalse 4492 | . . . . 5 ⊢ (¬ 𝐴 < 𝐵 → if(𝐴 < 𝐵, (𝐵 − 𝐴), 0) = 0) | |
| 24 | 23 | adantl 486 | . . . 4 ⊢ ((𝜑 ∧ ¬ 𝐴 < 𝐵) → if(𝐴 < 𝐵, (𝐵 − 𝐴), 0) = 0) |
| 25 | 22, 24 | eqtr2d 2801 | . . 3 ⊢ ((𝜑 ∧ ¬ 𝐴 < 𝐵) → 0 = (vol‘(𝐴[,)𝐵))) |
| 26 | 21, 25 | breqtrd 5130 | . 2 ⊢ ((𝜑 ∧ ¬ 𝐴 < 𝐵) → (𝐵 − 𝐴) ≤ (vol‘(𝐴[,)𝐵))) |
| 27 | 13, 26 | pm2.61dan 824 | 1 ⊢ (𝜑 → (𝐵 − 𝐴) ≤ (vol‘(𝐴[,)𝐵))) |
| Colors of variables: wff setvar class |
| Syntax hints: ¬ wn 3 → wi 4 ↔ wb 209 ∧ wa 400 = wceq 1563 ∈ wcel 2145 ifcif 4483 class class class wbr 5104 ‘cfv 6525 (class class class)co 7400 ℝcr 11087 0cc0 11088 < clt 11231 ≤ cle 11232 − cmin 11429 [,)cico 13362 volcvol 25579 |
| 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 5231 ax-sep 5250 ax-nul 5260 ax-pow 5326 ax-pr 5394 ax-un 7722 ax-inf2 9598 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 |
| 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 4868 df-int 4908 df-iun 4953 df-br 5105 df-opab 5167 df-mpt 5186 df-tr 5212 df-id 5546 df-eprel 5551 df-po 5559 df-so 5560 df-fr 5604 df-se 5605 df-we 5606 df-xp 5657 df-rel 5658 df-cnv 5659 df-co 5660 df-dm 5661 df-rn 5662 df-res 5663 df-ima 5664 df-pred 6291 df-ord 6352 df-on 6353 df-lim 6354 df-suc 6355 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-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-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-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 12222 df-2 12291 df-3 12292 df-n0 12493 df-z 12580 df-uz 12851 df-q 12961 df-rp 13005 df-xneg 13125 df-xadd 13126 df-xmul 13127 df-ioo 13364 df-ico 13366 df-icc 13367 df-fz 13524 df-fzo 13671 df-fl 13813 df-seq 14026 df-exp 14086 df-hash 14355 df-cj 15138 df-re 15139 df-im 15140 df-sqrt 15274 df-abs 15275 df-clim 15527 df-rlim 15528 df-sum 15726 df-rest 17463 df-topgen 17484 df-psmet 21471 df-xmet 21472 df-met 21473 df-bl 21474 df-mopn 21475 df-top 23008 df-topon 23025 df-bases 23060 df-cmp 23501 df-ovol 25580 df-vol 25581 |
| This theorem is referenced by: ovolval5lem1 47225 |
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