| 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 11179 | . . 3 ⊢ 0 ∈ ℝ* | |
| 2 | 1 | a1i 11 | . 2 ⊢ (𝜑 → 0 ∈ ℝ*) |
| 3 | pnfxr 11186 | . . 3 ⊢ +∞ ∈ ℝ* | |
| 4 | 3 | a1i 11 | . 2 ⊢ (𝜑 → +∞ ∈ ℝ*) |
| 5 | meage0.m | . . 3 ⊢ (𝜑 → 𝑀 ∈ Meas) | |
| 6 | eqid 2736 | . . 3 ⊢ dom 𝑀 = dom 𝑀 | |
| 7 | meage0.a | . . 3 ⊢ (𝜑 → 𝐴 ∈ dom 𝑀) | |
| 8 | 5, 6, 7 | meacl 46702 | . 2 ⊢ (𝜑 → (𝑀‘𝐴) ∈ (0[,]+∞)) |
| 9 | iccgelb 13318 | . 2 ⊢ ((0 ∈ ℝ* ∧ +∞ ∈ ℝ* ∧ (𝑀‘𝐴) ∈ (0[,]+∞)) → 0 ≤ (𝑀‘𝐴)) | |
| 10 | 2, 4, 8, 9 | syl3anc 1373 | 1 ⊢ (𝜑 → 0 ≤ (𝑀‘𝐴)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∈ wcel 2113 class class class wbr 5098 dom cdm 5624 ‘cfv 6492 (class class class)co 7358 0cc0 11026 +∞cpnf 11163 ℝ*cxr 11165 ≤ cle 11167 [,]cicc 13264 Meascmea 46693 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2115 ax-9 2123 ax-10 2146 ax-11 2162 ax-12 2184 ax-ext 2708 ax-rep 5224 ax-sep 5241 ax-nul 5251 ax-pow 5310 ax-pr 5377 ax-un 7680 ax-cnex 11082 ax-resscn 11083 ax-1cn 11084 ax-addrcl 11087 ax-rnegex 11097 ax-cnre 11099 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-nf 1785 df-sb 2068 df-mo 2539 df-eu 2569 df-clab 2715 df-cleq 2728 df-clel 2811 df-nfc 2885 df-ne 2933 df-ral 3052 df-rex 3061 df-reu 3351 df-rab 3400 df-v 3442 df-sbc 3741 df-csb 3850 df-dif 3904 df-un 3906 df-in 3908 df-ss 3918 df-nul 4286 df-if 4480 df-pw 4556 df-sn 4581 df-pr 4583 df-op 4587 df-uni 4864 df-iun 4948 df-br 5099 df-opab 5161 df-mpt 5180 df-id 5519 df-xp 5630 df-rel 5631 df-cnv 5632 df-co 5633 df-dm 5634 df-rn 5635 df-res 5636 df-ima 5637 df-iota 6448 df-fun 6494 df-fn 6495 df-f 6496 df-f1 6497 df-fo 6498 df-f1o 6499 df-fv 6500 df-ov 7361 df-oprab 7362 df-mpo 7363 df-pnf 11168 df-xr 11170 df-icc 13268 df-mea 46694 |
| This theorem is referenced by: meassre 46721 meale0eq0 46722 meaiuninclem 46724 |
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