| Mathbox for Glauco Siliprandi |
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| Mirrors > Home > MPE Home > Th. List > Mathboxes > meage0 | Structured version Visualization version GIF version | ||
| Description: If the measure of a measurable set is greater than or equal to 0. (Contributed by Glauco Siliprandi, 8-Apr-2021.) |
| Ref | Expression |
|---|---|
| meage0.m | ⊢ (𝜑 → 𝑀 ∈ Meas) |
| meage0.a | ⊢ (𝜑 → 𝐴 ∈ dom 𝑀) |
| Ref | Expression |
|---|---|
| meage0 | ⊢ (𝜑 → 0 ≤ (𝑀‘𝐴)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 0xr 11251 | . . 3 ⊢ 0 ∈ ℝ* | |
| 2 | 1 | a1i 11 | . 2 ⊢ (𝜑 → 0 ∈ ℝ*) |
| 3 | pnfxr 11258 | . . 3 ⊢ +∞ ∈ ℝ* | |
| 4 | 3 | a1i 11 | . 2 ⊢ (𝜑 → +∞ ∈ ℝ*) |
| 5 | meage0.m | . . 3 ⊢ (𝜑 → 𝑀 ∈ Meas) | |
| 6 | eqid 2763 | . . 3 ⊢ dom 𝑀 = dom 𝑀 | |
| 7 | meage0.a | . . 3 ⊢ (𝜑 → 𝐴 ∈ dom 𝑀) | |
| 8 | 5, 6, 7 | meacl 47172 | . 2 ⊢ (𝜑 → (𝑀‘𝐴) ∈ (0[,]+∞)) |
| 9 | iccgelb 13424 | . 2 ⊢ ((0 ∈ ℝ* ∧ +∞ ∈ ℝ* ∧ (𝑀‘𝐴) ∈ (0[,]+∞)) → 0 ≤ (𝑀‘𝐴)) | |
| 10 | 2, 4, 8, 9 | syl3anc 1398 | 1 ⊢ (𝜑 → 0 ≤ (𝑀‘𝐴)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∈ wcel 2143 class class class wbr 5109 dom cdm 5661 ‘cfv 6536 (class class class)co 7410 0cc0 11095 +∞cpnf 11235 ℝ*cxr 11237 ≤ cle 11239 [,]cicc 13370 Meascmea 47163 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1825 ax-4 1839 ax-5 1940 ax-6 1997 ax-7 2038 ax-8 2145 ax-9 2153 ax-10 2176 ax-11 2192 ax-12 2213 ax-ext 2735 ax-rep 5238 ax-sep 5257 ax-nul 5269 ax-pow 5336 ax-pr 5404 ax-un 7732 ax-cnex 11151 ax-resscn 11152 ax-1cn 11153 ax-addrcl 11156 ax-rnegex 11166 ax-cnre 11168 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1810 df-nf 1814 df-sb 2097 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2838 df-nfc 2912 df-ne 2959 df-ral 3080 df-rex 3090 df-reu 3370 df-rab 3417 df-v 3457 df-sbc 3745 df-csb 3854 df-dif 3908 df-un 3910 df-in 3912 df-ss 3922 df-nul 4287 df-if 4488 df-pw 4564 df-sn 4590 df-pr 4592 df-op 4596 df-uni 4873 df-iun 4958 df-br 5110 df-opab 5174 df-mpt 5193 df-id 5556 df-xp 5667 df-rel 5668 df-cnv 5669 df-co 5670 df-dm 5671 df-rn 5672 df-res 5673 df-ima 5674 df-iota 6492 df-fun 6538 df-fn 6539 df-f 6540 df-f1 6541 df-fo 6542 df-f1o 6543 df-fv 6544 df-ov 7413 df-oprab 7414 df-mpo 7415 df-pnf 11240 df-xr 11242 df-icc 13374 df-mea 47164 |
| This theorem is referenced by: meassre 47191 meale0eq0 47192 meaiuninclem 47194 |
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