| Mathbox for Thierry Arnoux |
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| Mirrors > Home > MPE Home > Th. List > Mathboxes > probnul | Structured version Visualization version GIF version | ||
| Description: The probability of the empty event set is 0. (Contributed by Thierry Arnoux, 25-Dec-2016.) |
| Ref | Expression |
|---|---|
| probnul | ⊢ (𝑃 ∈ Prob → (𝑃‘∅) = 0) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | domprobmeas 34800 | . 2 ⊢ (𝑃 ∈ Prob → 𝑃 ∈ (measures‘dom 𝑃)) | |
| 2 | measvnul 34596 | . 2 ⊢ (𝑃 ∈ (measures‘dom 𝑃) → (𝑃‘∅) = 0) | |
| 3 | 1, 2 | syl 18 | 1 ⊢ (𝑃 ∈ Prob → (𝑃‘∅) = 0) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1570 ∈ wcel 2143 ∅c0 4286 dom cdm 5661 ‘cfv 6536 0cc0 11095 measurescmeas 34585 Probcprb 34797 |
| 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-sep 5257 ax-nul 5269 ax-pow 5336 ax-pr 5404 ax-un 7732 |
| 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-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-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-fv 6544 df-ov 7413 df-esum 34418 df-meas 34586 df-prob 34798 |
| This theorem is referenced by: probun 34809 cndprobnul 34827 dstrvprob 34862 |
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