Mathbox for Thierry Arnoux |
< Previous
Next >
Nearby theorems |
||
Mirrors > Home > MPE Home > Th. List > Mathboxes > cntmeas | Structured version Visualization version GIF version |
Description: The Counting measure is a measure on any sigma-algebra. (Contributed by Thierry Arnoux, 25-Dec-2016.) |
Ref | Expression |
---|---|
cntmeas | ⊢ (𝑆 ∈ ∪ ran sigAlgebra → (♯ ↾ 𝑆) ∈ (measures‘𝑆)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | hashf2 31952 | . . . 4 ⊢ ♯:V⟶(0[,]+∞) | |
2 | ssv 3941 | . . . 4 ⊢ 𝑆 ⊆ V | |
3 | fssres 6624 | . . . 4 ⊢ ((♯:V⟶(0[,]+∞) ∧ 𝑆 ⊆ V) → (♯ ↾ 𝑆):𝑆⟶(0[,]+∞)) | |
4 | 1, 2, 3 | mp2an 688 | . . 3 ⊢ (♯ ↾ 𝑆):𝑆⟶(0[,]+∞) |
5 | 4 | a1i 11 | . 2 ⊢ (𝑆 ∈ ∪ ran sigAlgebra → (♯ ↾ 𝑆):𝑆⟶(0[,]+∞)) |
6 | 0elsiga 31982 | . . . 4 ⊢ (𝑆 ∈ ∪ ran sigAlgebra → ∅ ∈ 𝑆) | |
7 | fvres 6775 | . . . 4 ⊢ (∅ ∈ 𝑆 → ((♯ ↾ 𝑆)‘∅) = (♯‘∅)) | |
8 | 6, 7 | syl 17 | . . 3 ⊢ (𝑆 ∈ ∪ ran sigAlgebra → ((♯ ↾ 𝑆)‘∅) = (♯‘∅)) |
9 | hash0 14010 | . . 3 ⊢ (♯‘∅) = 0 | |
10 | 8, 9 | eqtrdi 2795 | . 2 ⊢ (𝑆 ∈ ∪ ran sigAlgebra → ((♯ ↾ 𝑆)‘∅) = 0) |
11 | vex 3426 | . . . . . . 7 ⊢ 𝑥 ∈ V | |
12 | hasheuni 31953 | . . . . . . 7 ⊢ ((𝑥 ∈ V ∧ Disj 𝑦 ∈ 𝑥 𝑦) → (♯‘∪ 𝑥) = Σ*𝑦 ∈ 𝑥(♯‘𝑦)) | |
13 | 11, 12 | mpan 686 | . . . . . 6 ⊢ (Disj 𝑦 ∈ 𝑥 𝑦 → (♯‘∪ 𝑥) = Σ*𝑦 ∈ 𝑥(♯‘𝑦)) |
14 | 13 | ad2antll 725 | . . . . 5 ⊢ (((𝑆 ∈ ∪ ran sigAlgebra ∧ 𝑥 ∈ 𝒫 𝑆) ∧ (𝑥 ≼ ω ∧ Disj 𝑦 ∈ 𝑥 𝑦)) → (♯‘∪ 𝑥) = Σ*𝑦 ∈ 𝑥(♯‘𝑦)) |
15 | isrnsigau 31995 | . . . . . . . . . . 11 ⊢ (𝑆 ∈ ∪ ran sigAlgebra → (𝑆 ⊆ 𝒫 ∪ 𝑆 ∧ (∪ 𝑆 ∈ 𝑆 ∧ ∀𝑥 ∈ 𝑆 (∪ 𝑆 ∖ 𝑥) ∈ 𝑆 ∧ ∀𝑥 ∈ 𝒫 𝑆(𝑥 ≼ ω → ∪ 𝑥 ∈ 𝑆)))) | |
16 | 15 | simprd 495 | . . . . . . . . . 10 ⊢ (𝑆 ∈ ∪ ran sigAlgebra → (∪ 𝑆 ∈ 𝑆 ∧ ∀𝑥 ∈ 𝑆 (∪ 𝑆 ∖ 𝑥) ∈ 𝑆 ∧ ∀𝑥 ∈ 𝒫 𝑆(𝑥 ≼ ω → ∪ 𝑥 ∈ 𝑆))) |
17 | 16 | simp3d 1142 | . . . . . . . . 9 ⊢ (𝑆 ∈ ∪ ran sigAlgebra → ∀𝑥 ∈ 𝒫 𝑆(𝑥 ≼ ω → ∪ 𝑥 ∈ 𝑆)) |
18 | fvres 6775 | . . . . . . . . . . 11 ⊢ (∪ 𝑥 ∈ 𝑆 → ((♯ ↾ 𝑆)‘∪ 𝑥) = (♯‘∪ 𝑥)) | |
19 | 18 | imim2i 16 | . . . . . . . . . 10 ⊢ ((𝑥 ≼ ω → ∪ 𝑥 ∈ 𝑆) → (𝑥 ≼ ω → ((♯ ↾ 𝑆)‘∪ 𝑥) = (♯‘∪ 𝑥))) |
20 | 19 | ralimi 3086 | . . . . . . . . 9 ⊢ (∀𝑥 ∈ 𝒫 𝑆(𝑥 ≼ ω → ∪ 𝑥 ∈ 𝑆) → ∀𝑥 ∈ 𝒫 𝑆(𝑥 ≼ ω → ((♯ ↾ 𝑆)‘∪ 𝑥) = (♯‘∪ 𝑥))) |
21 | 17, 20 | syl 17 | . . . . . . . 8 ⊢ (𝑆 ∈ ∪ ran sigAlgebra → ∀𝑥 ∈ 𝒫 𝑆(𝑥 ≼ ω → ((♯ ↾ 𝑆)‘∪ 𝑥) = (♯‘∪ 𝑥))) |
22 | 21 | r19.21bi 3132 | . . . . . . 7 ⊢ ((𝑆 ∈ ∪ ran sigAlgebra ∧ 𝑥 ∈ 𝒫 𝑆) → (𝑥 ≼ ω → ((♯ ↾ 𝑆)‘∪ 𝑥) = (♯‘∪ 𝑥))) |
23 | 22 | imp 406 | . . . . . 6 ⊢ (((𝑆 ∈ ∪ ran sigAlgebra ∧ 𝑥 ∈ 𝒫 𝑆) ∧ 𝑥 ≼ ω) → ((♯ ↾ 𝑆)‘∪ 𝑥) = (♯‘∪ 𝑥)) |
24 | 23 | adantrr 713 | . . . . 5 ⊢ (((𝑆 ∈ ∪ ran sigAlgebra ∧ 𝑥 ∈ 𝒫 𝑆) ∧ (𝑥 ≼ ω ∧ Disj 𝑦 ∈ 𝑥 𝑦)) → ((♯ ↾ 𝑆)‘∪ 𝑥) = (♯‘∪ 𝑥)) |
25 | elpwi 4539 | . . . . . . . . . 10 ⊢ (𝑥 ∈ 𝒫 𝑆 → 𝑥 ⊆ 𝑆) | |
26 | 25 | sseld 3916 | . . . . . . . . 9 ⊢ (𝑥 ∈ 𝒫 𝑆 → (𝑦 ∈ 𝑥 → 𝑦 ∈ 𝑆)) |
27 | fvres 6775 | . . . . . . . . 9 ⊢ (𝑦 ∈ 𝑆 → ((♯ ↾ 𝑆)‘𝑦) = (♯‘𝑦)) | |
28 | 26, 27 | syl6 35 | . . . . . . . 8 ⊢ (𝑥 ∈ 𝒫 𝑆 → (𝑦 ∈ 𝑥 → ((♯ ↾ 𝑆)‘𝑦) = (♯‘𝑦))) |
29 | 28 | imp 406 | . . . . . . 7 ⊢ ((𝑥 ∈ 𝒫 𝑆 ∧ 𝑦 ∈ 𝑥) → ((♯ ↾ 𝑆)‘𝑦) = (♯‘𝑦)) |
30 | 29 | esumeq2dv 31906 | . . . . . 6 ⊢ (𝑥 ∈ 𝒫 𝑆 → Σ*𝑦 ∈ 𝑥((♯ ↾ 𝑆)‘𝑦) = Σ*𝑦 ∈ 𝑥(♯‘𝑦)) |
31 | 30 | ad2antlr 723 | . . . . 5 ⊢ (((𝑆 ∈ ∪ ran sigAlgebra ∧ 𝑥 ∈ 𝒫 𝑆) ∧ (𝑥 ≼ ω ∧ Disj 𝑦 ∈ 𝑥 𝑦)) → Σ*𝑦 ∈ 𝑥((♯ ↾ 𝑆)‘𝑦) = Σ*𝑦 ∈ 𝑥(♯‘𝑦)) |
32 | 14, 24, 31 | 3eqtr4d 2788 | . . . 4 ⊢ (((𝑆 ∈ ∪ ran sigAlgebra ∧ 𝑥 ∈ 𝒫 𝑆) ∧ (𝑥 ≼ ω ∧ Disj 𝑦 ∈ 𝑥 𝑦)) → ((♯ ↾ 𝑆)‘∪ 𝑥) = Σ*𝑦 ∈ 𝑥((♯ ↾ 𝑆)‘𝑦)) |
33 | 32 | ex 412 | . . 3 ⊢ ((𝑆 ∈ ∪ ran sigAlgebra ∧ 𝑥 ∈ 𝒫 𝑆) → ((𝑥 ≼ ω ∧ Disj 𝑦 ∈ 𝑥 𝑦) → ((♯ ↾ 𝑆)‘∪ 𝑥) = Σ*𝑦 ∈ 𝑥((♯ ↾ 𝑆)‘𝑦))) |
34 | 33 | ralrimiva 3107 | . 2 ⊢ (𝑆 ∈ ∪ ran sigAlgebra → ∀𝑥 ∈ 𝒫 𝑆((𝑥 ≼ ω ∧ Disj 𝑦 ∈ 𝑥 𝑦) → ((♯ ↾ 𝑆)‘∪ 𝑥) = Σ*𝑦 ∈ 𝑥((♯ ↾ 𝑆)‘𝑦))) |
35 | ismeas 32067 | . 2 ⊢ (𝑆 ∈ ∪ ran sigAlgebra → ((♯ ↾ 𝑆) ∈ (measures‘𝑆) ↔ ((♯ ↾ 𝑆):𝑆⟶(0[,]+∞) ∧ ((♯ ↾ 𝑆)‘∅) = 0 ∧ ∀𝑥 ∈ 𝒫 𝑆((𝑥 ≼ ω ∧ Disj 𝑦 ∈ 𝑥 𝑦) → ((♯ ↾ 𝑆)‘∪ 𝑥) = Σ*𝑦 ∈ 𝑥((♯ ↾ 𝑆)‘𝑦))))) | |
36 | 5, 10, 34, 35 | mpbir3and 1340 | 1 ⊢ (𝑆 ∈ ∪ ran sigAlgebra → (♯ ↾ 𝑆) ∈ (measures‘𝑆)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 395 ∧ w3a 1085 = wceq 1539 ∈ wcel 2108 ∀wral 3063 Vcvv 3422 ∖ cdif 3880 ⊆ wss 3883 ∅c0 4253 𝒫 cpw 4530 ∪ cuni 4836 Disj wdisj 5035 class class class wbr 5070 ran crn 5581 ↾ cres 5582 ⟶wf 6414 ‘cfv 6418 (class class class)co 7255 ωcom 7687 ≼ cdom 8689 0cc0 10802 +∞cpnf 10937 [,]cicc 13011 ♯chash 13972 Σ*cesum 31895 sigAlgebracsiga 31976 measurescmeas 32063 |
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-inf2 9329 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 ax-addf 10881 ax-mulf 10882 |
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-2o 8268 df-oadd 8271 df-er 8456 df-map 8575 df-pm 8576 df-ixp 8644 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-xnn0 12236 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-fl 13440 df-mod 13518 df-seq 13650 df-exp 13711 df-fac 13916 df-bc 13945 df-hash 13973 df-shft 14706 df-cj 14738 df-re 14739 df-im 14740 df-sqrt 14874 df-abs 14875 df-limsup 15108 df-clim 15125 df-rlim 15126 df-sum 15326 df-ef 15705 df-sin 15707 df-cos 15708 df-pi 15710 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-starv 16903 df-sca 16904 df-vsca 16905 df-ip 16906 df-tset 16907 df-ple 16908 df-ds 16910 df-unif 16911 df-hom 16912 df-cco 16913 df-rest 17050 df-topn 17051 df-0g 17069 df-gsum 17070 df-topgen 17071 df-pt 17072 df-prds 17075 df-ordt 17129 df-xrs 17130 df-qtop 17135 df-imas 17136 df-xps 17138 df-mre 17212 df-mrc 17213 df-acs 17215 df-ps 18199 df-tsr 18200 df-plusf 18240 df-mgm 18241 df-sgrp 18290 df-mnd 18301 df-mhm 18345 df-submnd 18346 df-grp 18495 df-minusg 18496 df-sbg 18497 df-mulg 18616 df-subg 18667 df-cntz 18838 df-cmn 19303 df-abl 19304 df-mgp 19636 df-ur 19653 df-ring 19700 df-cring 19701 df-subrg 19937 df-abv 19992 df-lmod 20040 df-scaf 20041 df-sra 20349 df-rgmod 20350 df-psmet 20502 df-xmet 20503 df-met 20504 df-bl 20505 df-mopn 20506 df-fbas 20507 df-fg 20508 df-cnfld 20511 df-top 21951 df-topon 21968 df-topsp 21990 df-bases 22004 df-cld 22078 df-ntr 22079 df-cls 22080 df-nei 22157 df-lp 22195 df-perf 22196 df-cn 22286 df-cnp 22287 df-haus 22374 df-tx 22621 df-hmeo 22814 df-fil 22905 df-fm 22997 df-flim 22998 df-flf 22999 df-tmd 23131 df-tgp 23132 df-tsms 23186 df-trg 23219 df-xms 23381 df-ms 23382 df-tms 23383 df-nm 23644 df-ngp 23645 df-nrg 23647 df-nlm 23648 df-ii 23946 df-cncf 23947 df-limc 24935 df-dv 24936 df-log 25617 df-esum 31896 df-siga 31977 df-meas 32064 |
This theorem is referenced by: pwcntmeas 32095 |
Copyright terms: Public domain | W3C validator |