Mathbox for Thierry Arnoux |
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Mirrors > Home > MPE Home > Th. List > Mathboxes > probfinmeasb | Structured version Visualization version GIF version |
Description: Build a probability measure from a finite measure. (Contributed by Thierry Arnoux, 31-Jan-2017.) |
Ref | Expression |
---|---|
probfinmeasb | ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ (𝑀‘∪ 𝑆) ∈ ℝ+) → (𝑀 ∘f/c /𝑒 (𝑀‘∪ 𝑆)) ∈ Prob) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | measdivcst 32092 | . . . 4 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ (𝑀‘∪ 𝑆) ∈ ℝ+) → (𝑀 ∘f/c /𝑒 (𝑀‘∪ 𝑆)) ∈ (measures‘𝑆)) | |
2 | measfn 32072 | . . . . . . . 8 ⊢ (𝑀 ∈ (measures‘𝑆) → 𝑀 Fn 𝑆) | |
3 | 2 | adantr 480 | . . . . . . 7 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ (𝑀‘∪ 𝑆) ∈ ℝ+) → 𝑀 Fn 𝑆) |
4 | measbase 32065 | . . . . . . . 8 ⊢ (𝑀 ∈ (measures‘𝑆) → 𝑆 ∈ ∪ ran sigAlgebra) | |
5 | 4 | adantr 480 | . . . . . . 7 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ (𝑀‘∪ 𝑆) ∈ ℝ+) → 𝑆 ∈ ∪ ran sigAlgebra) |
6 | simpr 484 | . . . . . . 7 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ (𝑀‘∪ 𝑆) ∈ ℝ+) → (𝑀‘∪ 𝑆) ∈ ℝ+) | |
7 | 3, 5, 6 | ofcfn 31968 | . . . . . 6 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ (𝑀‘∪ 𝑆) ∈ ℝ+) → (𝑀 ∘f/c /𝑒 (𝑀‘∪ 𝑆)) Fn 𝑆) |
8 | 7 | fndmd 6522 | . . . . 5 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ (𝑀‘∪ 𝑆) ∈ ℝ+) → dom (𝑀 ∘f/c /𝑒 (𝑀‘∪ 𝑆)) = 𝑆) |
9 | 8 | fveq2d 6760 | . . . 4 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ (𝑀‘∪ 𝑆) ∈ ℝ+) → (measures‘dom (𝑀 ∘f/c /𝑒 (𝑀‘∪ 𝑆))) = (measures‘𝑆)) |
10 | 1, 9 | eleqtrrd 2842 | . . 3 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ (𝑀‘∪ 𝑆) ∈ ℝ+) → (𝑀 ∘f/c /𝑒 (𝑀‘∪ 𝑆)) ∈ (measures‘dom (𝑀 ∘f/c /𝑒 (𝑀‘∪ 𝑆)))) |
11 | measbasedom 32070 | . . 3 ⊢ ((𝑀 ∘f/c /𝑒 (𝑀‘∪ 𝑆)) ∈ ∪ ran measures ↔ (𝑀 ∘f/c /𝑒 (𝑀‘∪ 𝑆)) ∈ (measures‘dom (𝑀 ∘f/c /𝑒 (𝑀‘∪ 𝑆)))) | |
12 | 10, 11 | sylibr 233 | . 2 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ (𝑀‘∪ 𝑆) ∈ ℝ+) → (𝑀 ∘f/c /𝑒 (𝑀‘∪ 𝑆)) ∈ ∪ ran measures) |
13 | 8 | unieqd 4850 | . . . 4 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ (𝑀‘∪ 𝑆) ∈ ℝ+) → ∪ dom (𝑀 ∘f/c /𝑒 (𝑀‘∪ 𝑆)) = ∪ 𝑆) |
14 | 13 | fveq2d 6760 | . . 3 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ (𝑀‘∪ 𝑆) ∈ ℝ+) → ((𝑀 ∘f/c /𝑒 (𝑀‘∪ 𝑆))‘∪ dom (𝑀 ∘f/c /𝑒 (𝑀‘∪ 𝑆))) = ((𝑀 ∘f/c /𝑒 (𝑀‘∪ 𝑆))‘∪ 𝑆)) |
15 | unielsiga 31996 | . . . . 5 ⊢ (𝑆 ∈ ∪ ran sigAlgebra → ∪ 𝑆 ∈ 𝑆) | |
16 | 5, 15 | syl 17 | . . . 4 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ (𝑀‘∪ 𝑆) ∈ ℝ+) → ∪ 𝑆 ∈ 𝑆) |
17 | eqidd 2739 | . . . . 5 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ (𝑀‘∪ 𝑆) ∈ ℝ+) ∧ ∪ 𝑆 ∈ 𝑆) → (𝑀‘∪ 𝑆) = (𝑀‘∪ 𝑆)) | |
18 | 3, 5, 6, 17 | ofcval 31967 | . . . 4 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ (𝑀‘∪ 𝑆) ∈ ℝ+) ∧ ∪ 𝑆 ∈ 𝑆) → ((𝑀 ∘f/c /𝑒 (𝑀‘∪ 𝑆))‘∪ 𝑆) = ((𝑀‘∪ 𝑆) /𝑒 (𝑀‘∪ 𝑆))) |
19 | 16, 18 | mpdan 683 | . . 3 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ (𝑀‘∪ 𝑆) ∈ ℝ+) → ((𝑀 ∘f/c /𝑒 (𝑀‘∪ 𝑆))‘∪ 𝑆) = ((𝑀‘∪ 𝑆) /𝑒 (𝑀‘∪ 𝑆))) |
20 | rpre 12667 | . . . . 5 ⊢ ((𝑀‘∪ 𝑆) ∈ ℝ+ → (𝑀‘∪ 𝑆) ∈ ℝ) | |
21 | rpne0 12675 | . . . . 5 ⊢ ((𝑀‘∪ 𝑆) ∈ ℝ+ → (𝑀‘∪ 𝑆) ≠ 0) | |
22 | xdivid 31104 | . . . . 5 ⊢ (((𝑀‘∪ 𝑆) ∈ ℝ ∧ (𝑀‘∪ 𝑆) ≠ 0) → ((𝑀‘∪ 𝑆) /𝑒 (𝑀‘∪ 𝑆)) = 1) | |
23 | 20, 21, 22 | syl2anc 583 | . . . 4 ⊢ ((𝑀‘∪ 𝑆) ∈ ℝ+ → ((𝑀‘∪ 𝑆) /𝑒 (𝑀‘∪ 𝑆)) = 1) |
24 | 23 | adantl 481 | . . 3 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ (𝑀‘∪ 𝑆) ∈ ℝ+) → ((𝑀‘∪ 𝑆) /𝑒 (𝑀‘∪ 𝑆)) = 1) |
25 | 14, 19, 24 | 3eqtrd 2782 | . 2 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ (𝑀‘∪ 𝑆) ∈ ℝ+) → ((𝑀 ∘f/c /𝑒 (𝑀‘∪ 𝑆))‘∪ dom (𝑀 ∘f/c /𝑒 (𝑀‘∪ 𝑆))) = 1) |
26 | elprob 32276 | . 2 ⊢ ((𝑀 ∘f/c /𝑒 (𝑀‘∪ 𝑆)) ∈ Prob ↔ ((𝑀 ∘f/c /𝑒 (𝑀‘∪ 𝑆)) ∈ ∪ ran measures ∧ ((𝑀 ∘f/c /𝑒 (𝑀‘∪ 𝑆))‘∪ dom (𝑀 ∘f/c /𝑒 (𝑀‘∪ 𝑆))) = 1)) | |
27 | 12, 25, 26 | sylanbrc 582 | 1 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ (𝑀‘∪ 𝑆) ∈ ℝ+) → (𝑀 ∘f/c /𝑒 (𝑀‘∪ 𝑆)) ∈ Prob) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 395 = wceq 1539 ∈ wcel 2108 ≠ wne 2942 ∪ cuni 4836 dom cdm 5580 ran crn 5581 Fn wfn 6413 ‘cfv 6418 (class class class)co 7255 ℝcr 10801 0cc0 10802 1c1 10803 ℝ+crp 12659 /𝑒 cxdiv 31093 ∘f/c cofc 31963 sigAlgebracsiga 31976 measurescmeas 32063 Probcprb 32274 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1799 ax-4 1813 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2110 ax-9 2118 ax-10 2139 ax-11 2156 ax-12 2173 ax-ext 2709 ax-rep 5205 ax-sep 5218 ax-nul 5225 ax-pow 5283 ax-pr 5347 ax-un 7566 ax-cnex 10858 ax-resscn 10859 ax-1cn 10860 ax-icn 10861 ax-addcl 10862 ax-addrcl 10863 ax-mulcl 10864 ax-mulrcl 10865 ax-mulcom 10866 ax-addass 10867 ax-mulass 10868 ax-distr 10869 ax-i2m1 10870 ax-1ne0 10871 ax-1rid 10872 ax-rnegex 10873 ax-rrecex 10874 ax-cnre 10875 ax-pre-lttri 10876 ax-pre-lttrn 10877 ax-pre-ltadd 10878 ax-pre-mulgt0 10879 ax-pre-sup 10880 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 844 df-3or 1086 df-3an 1087 df-tru 1542 df-fal 1552 df-ex 1784 df-nf 1788 df-sb 2069 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2817 df-nfc 2888 df-ne 2943 df-nel 3049 df-ral 3068 df-rex 3069 df-reu 3070 df-rmo 3071 df-rab 3072 df-v 3424 df-sbc 3712 df-csb 3829 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-pss 3902 df-nul 4254 df-if 4457 df-pw 4532 df-sn 4559 df-pr 4561 df-tp 4563 df-op 4565 df-uni 4837 df-int 4877 df-iun 4923 df-iin 4924 df-disj 5036 df-br 5071 df-opab 5133 df-mpt 5154 df-tr 5188 df-id 5480 df-eprel 5486 df-po 5494 df-so 5495 df-fr 5535 df-se 5536 df-we 5537 df-xp 5586 df-rel 5587 df-cnv 5588 df-co 5589 df-dm 5590 df-rn 5591 df-res 5592 df-ima 5593 df-pred 6191 df-ord 6254 df-on 6255 df-lim 6256 df-suc 6257 df-iota 6376 df-fun 6420 df-fn 6421 df-f 6422 df-f1 6423 df-fo 6424 df-f1o 6425 df-fv 6426 df-isom 6427 df-riota 7212 df-ov 7258 df-oprab 7259 df-mpo 7260 df-of 7511 df-om 7688 df-1st 7804 df-2nd 7805 df-supp 7949 df-frecs 8068 df-wrecs 8099 df-recs 8173 df-rdg 8212 df-1o 8267 df-er 8456 df-map 8575 df-en 8692 df-dom 8693 df-sdom 8694 df-fin 8695 df-fsupp 9059 df-fi 9100 df-sup 9131 df-inf 9132 df-oi 9199 df-card 9628 df-pnf 10942 df-mnf 10943 df-xr 10944 df-ltxr 10945 df-le 10946 df-sub 11137 df-neg 11138 df-div 11563 df-nn 11904 df-2 11966 df-3 11967 df-4 11968 df-5 11969 df-6 11970 df-7 11971 df-8 11972 df-9 11973 df-n0 12164 df-z 12250 df-dec 12367 df-uz 12512 df-q 12618 df-rp 12660 df-xneg 12777 df-xadd 12778 df-xmul 12779 df-ioo 13012 df-ioc 13013 df-ico 13014 df-icc 13015 df-fz 13169 df-fzo 13312 df-seq 13650 df-hash 13973 df-struct 16776 df-sets 16793 df-slot 16811 df-ndx 16823 df-base 16841 df-ress 16868 df-plusg 16901 df-mulr 16902 df-tset 16907 df-ple 16908 df-ds 16910 df-rest 17050 df-topn 17051 df-0g 17069 df-gsum 17070 df-topgen 17071 df-ordt 17129 df-xrs 17130 df-mre 17212 df-mrc 17213 df-acs 17215 df-ps 18199 df-tsr 18200 df-mgm 18241 df-sgrp 18290 df-mnd 18301 df-mhm 18345 df-submnd 18346 df-cntz 18838 df-cmn 19303 df-fbas 20507 df-fg 20508 df-top 21951 df-topon 21968 df-topsp 21990 df-bases 22004 df-ntr 22079 df-nei 22157 df-cn 22286 df-cnp 22287 df-haus 22374 df-fil 22905 df-fm 22997 df-flim 22998 df-flf 22999 df-tsms 23186 df-xdiv 31094 df-esum 31896 df-ofc 31964 df-siga 31977 df-meas 32064 df-prob 32275 |
This theorem is referenced by: coinflipprob 32346 |
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