![]() |
Mathbox for Glauco Siliprandi |
< Previous
Next >
Nearby theorems |
|
Mirrors > Home > MPE Home > Th. List > Mathboxes > saliuncl | Structured version Visualization version GIF version |
Description: SAlg sigma-algebra is closed under countable indexed union. (Contributed by Glauco Siliprandi, 17-Aug-2020.) |
Ref | Expression |
---|---|
saliuncl.s | ⊢ (𝜑 → 𝑆 ∈ SAlg) |
saliuncl.kct | ⊢ (𝜑 → 𝐾 ≼ ω) |
saliuncl.b | ⊢ ((𝜑 ∧ 𝑘 ∈ 𝐾) → 𝐸 ∈ 𝑆) |
Ref | Expression |
---|---|
saliuncl | ⊢ (𝜑 → ∪ 𝑘 ∈ 𝐾 𝐸 ∈ 𝑆) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | saliuncl.b | . . . 4 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝐾) → 𝐸 ∈ 𝑆) | |
2 | 1 | ralrimiva 3149 | . . 3 ⊢ (𝜑 → ∀𝑘 ∈ 𝐾 𝐸 ∈ 𝑆) |
3 | dfiun3g 5800 | . . 3 ⊢ (∀𝑘 ∈ 𝐾 𝐸 ∈ 𝑆 → ∪ 𝑘 ∈ 𝐾 𝐸 = ∪ ran (𝑘 ∈ 𝐾 ↦ 𝐸)) | |
4 | 2, 3 | syl 17 | . 2 ⊢ (𝜑 → ∪ 𝑘 ∈ 𝐾 𝐸 = ∪ ran (𝑘 ∈ 𝐾 ↦ 𝐸)) |
5 | saliuncl.s | . . 3 ⊢ (𝜑 → 𝑆 ∈ SAlg) | |
6 | eqid 2798 | . . . . . 6 ⊢ (𝑘 ∈ 𝐾 ↦ 𝐸) = (𝑘 ∈ 𝐾 ↦ 𝐸) | |
7 | 6 | rnmptss 6863 | . . . . 5 ⊢ (∀𝑘 ∈ 𝐾 𝐸 ∈ 𝑆 → ran (𝑘 ∈ 𝐾 ↦ 𝐸) ⊆ 𝑆) |
8 | 2, 7 | syl 17 | . . . 4 ⊢ (𝜑 → ran (𝑘 ∈ 𝐾 ↦ 𝐸) ⊆ 𝑆) |
9 | 5, 8 | ssexd 5192 | . . . . 5 ⊢ (𝜑 → ran (𝑘 ∈ 𝐾 ↦ 𝐸) ∈ V) |
10 | elpwg 4500 | . . . . 5 ⊢ (ran (𝑘 ∈ 𝐾 ↦ 𝐸) ∈ V → (ran (𝑘 ∈ 𝐾 ↦ 𝐸) ∈ 𝒫 𝑆 ↔ ran (𝑘 ∈ 𝐾 ↦ 𝐸) ⊆ 𝑆)) | |
11 | 9, 10 | syl 17 | . . . 4 ⊢ (𝜑 → (ran (𝑘 ∈ 𝐾 ↦ 𝐸) ∈ 𝒫 𝑆 ↔ ran (𝑘 ∈ 𝐾 ↦ 𝐸) ⊆ 𝑆)) |
12 | 8, 11 | mpbird 260 | . . 3 ⊢ (𝜑 → ran (𝑘 ∈ 𝐾 ↦ 𝐸) ∈ 𝒫 𝑆) |
13 | saliuncl.kct | . . . 4 ⊢ (𝜑 → 𝐾 ≼ ω) | |
14 | 1stcrestlem 22057 | . . . 4 ⊢ (𝐾 ≼ ω → ran (𝑘 ∈ 𝐾 ↦ 𝐸) ≼ ω) | |
15 | 13, 14 | syl 17 | . . 3 ⊢ (𝜑 → ran (𝑘 ∈ 𝐾 ↦ 𝐸) ≼ ω) |
16 | 5, 12, 15 | salunicl 42958 | . 2 ⊢ (𝜑 → ∪ ran (𝑘 ∈ 𝐾 ↦ 𝐸) ∈ 𝑆) |
17 | 4, 16 | eqeltrd 2890 | 1 ⊢ (𝜑 → ∪ 𝑘 ∈ 𝐾 𝐸 ∈ 𝑆) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 209 ∧ wa 399 = wceq 1538 ∈ wcel 2111 ∀wral 3106 Vcvv 3441 ⊆ wss 3881 𝒫 cpw 4497 ∪ cuni 4800 ∪ ciun 4881 class class class wbr 5030 ↦ cmpt 5110 ran crn 5520 ωcom 7560 ≼ cdom 8490 SAlgcsalg 42950 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2113 ax-9 2121 ax-10 2142 ax-11 2158 ax-12 2175 ax-ext 2770 ax-rep 5154 ax-sep 5167 ax-nul 5174 ax-pow 5231 ax-pr 5295 ax-un 7441 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 845 df-3or 1085 df-3an 1086 df-tru 1541 df-ex 1782 df-nf 1786 df-sb 2070 df-mo 2598 df-eu 2629 df-clab 2777 df-cleq 2791 df-clel 2870 df-nfc 2938 df-ne 2988 df-ral 3111 df-rex 3112 df-reu 3113 df-rmo 3114 df-rab 3115 df-v 3443 df-sbc 3721 df-csb 3829 df-dif 3884 df-un 3886 df-in 3888 df-ss 3898 df-pss 3900 df-nul 4244 df-if 4426 df-pw 4499 df-sn 4526 df-pr 4528 df-tp 4530 df-op 4532 df-uni 4801 df-int 4839 df-iun 4883 df-br 5031 df-opab 5093 df-mpt 5111 df-tr 5137 df-id 5425 df-eprel 5430 df-po 5438 df-so 5439 df-fr 5478 df-se 5479 df-we 5480 df-xp 5525 df-rel 5526 df-cnv 5527 df-co 5528 df-dm 5529 df-rn 5530 df-res 5531 df-ima 5532 df-pred 6116 df-ord 6162 df-on 6163 df-lim 6164 df-suc 6165 df-iota 6283 df-fun 6326 df-fn 6327 df-f 6328 df-f1 6329 df-fo 6330 df-f1o 6331 df-fv 6332 df-isom 6333 df-riota 7093 df-ov 7138 df-oprab 7139 df-mpo 7140 df-om 7561 df-1st 7671 df-2nd 7672 df-wrecs 7930 df-recs 7991 df-er 8272 df-map 8391 df-en 8493 df-dom 8494 df-card 9352 df-acn 9355 df-salg 42951 |
This theorem is referenced by: saliincl 42967 subsaliuncl 42998 meaiunlelem 43107 meaiuninclem 43119 meaiuninc3v 43123 meaiininclem 43125 caratheodory 43167 opnvonmbllem2 43272 ctvonmbl 43328 vonct 43332 smfaddlem2 43397 smflimlem1 43404 smfresal 43420 smfmullem4 43426 |
Copyright terms: Public domain | W3C validator |