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Mathbox for Thierry Arnoux |
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Mirrors > Home > MPE Home > Th. List > Mathboxes > cnmbfm | Structured version Visualization version GIF version |
Description: A continuous function is measurable with respect to the Borel Algebra of its domain and range. (Contributed by Thierry Arnoux, 3-Jun-2017.) |
Ref | Expression |
---|---|
cnmbfm.1 | ⊢ (𝜑 → 𝐹 ∈ (𝐽 Cn 𝐾)) |
cnmbfm.2 | ⊢ (𝜑 → 𝑆 = (sigaGen‘𝐽)) |
cnmbfm.3 | ⊢ (𝜑 → 𝑇 = (sigaGen‘𝐾)) |
Ref | Expression |
---|---|
cnmbfm | ⊢ (𝜑 → 𝐹 ∈ (𝑆MblFnM𝑇)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | cnmbfm.1 | . . . 4 ⊢ (𝜑 → 𝐹 ∈ (𝐽 Cn 𝐾)) | |
2 | eqid 2798 | . . . . 5 ⊢ ∪ 𝐽 = ∪ 𝐽 | |
3 | eqid 2798 | . . . . 5 ⊢ ∪ 𝐾 = ∪ 𝐾 | |
4 | 2, 3 | cnf 21851 | . . . 4 ⊢ (𝐹 ∈ (𝐽 Cn 𝐾) → 𝐹:∪ 𝐽⟶∪ 𝐾) |
5 | 1, 4 | syl 17 | . . 3 ⊢ (𝜑 → 𝐹:∪ 𝐽⟶∪ 𝐾) |
6 | cnmbfm.2 | . . . . . 6 ⊢ (𝜑 → 𝑆 = (sigaGen‘𝐽)) | |
7 | 6 | unieqd 4814 | . . . . 5 ⊢ (𝜑 → ∪ 𝑆 = ∪ (sigaGen‘𝐽)) |
8 | cntop1 21845 | . . . . . 6 ⊢ (𝐹 ∈ (𝐽 Cn 𝐾) → 𝐽 ∈ Top) | |
9 | unisg 31512 | . . . . . 6 ⊢ (𝐽 ∈ Top → ∪ (sigaGen‘𝐽) = ∪ 𝐽) | |
10 | 1, 8, 9 | 3syl 18 | . . . . 5 ⊢ (𝜑 → ∪ (sigaGen‘𝐽) = ∪ 𝐽) |
11 | 7, 10 | eqtrd 2833 | . . . 4 ⊢ (𝜑 → ∪ 𝑆 = ∪ 𝐽) |
12 | cnmbfm.3 | . . . . . 6 ⊢ (𝜑 → 𝑇 = (sigaGen‘𝐾)) | |
13 | 12 | unieqd 4814 | . . . . 5 ⊢ (𝜑 → ∪ 𝑇 = ∪ (sigaGen‘𝐾)) |
14 | cntop2 21846 | . . . . . 6 ⊢ (𝐹 ∈ (𝐽 Cn 𝐾) → 𝐾 ∈ Top) | |
15 | unisg 31512 | . . . . . 6 ⊢ (𝐾 ∈ Top → ∪ (sigaGen‘𝐾) = ∪ 𝐾) | |
16 | 1, 14, 15 | 3syl 18 | . . . . 5 ⊢ (𝜑 → ∪ (sigaGen‘𝐾) = ∪ 𝐾) |
17 | 13, 16 | eqtrd 2833 | . . . 4 ⊢ (𝜑 → ∪ 𝑇 = ∪ 𝐾) |
18 | 11, 17 | feq23d 6482 | . . 3 ⊢ (𝜑 → (𝐹:∪ 𝑆⟶∪ 𝑇 ↔ 𝐹:∪ 𝐽⟶∪ 𝐾)) |
19 | 5, 18 | mpbird 260 | . 2 ⊢ (𝜑 → 𝐹:∪ 𝑆⟶∪ 𝑇) |
20 | sssigagen 31514 | . . . . . . 7 ⊢ (𝐽 ∈ Top → 𝐽 ⊆ (sigaGen‘𝐽)) | |
21 | 1, 8, 20 | 3syl 18 | . . . . . 6 ⊢ (𝜑 → 𝐽 ⊆ (sigaGen‘𝐽)) |
22 | 21, 6 | sseqtrrd 3956 | . . . . 5 ⊢ (𝜑 → 𝐽 ⊆ 𝑆) |
23 | 22 | adantr 484 | . . . 4 ⊢ ((𝜑 ∧ 𝑎 ∈ 𝐾) → 𝐽 ⊆ 𝑆) |
24 | cnima 21870 | . . . . 5 ⊢ ((𝐹 ∈ (𝐽 Cn 𝐾) ∧ 𝑎 ∈ 𝐾) → (◡𝐹 “ 𝑎) ∈ 𝐽) | |
25 | 1, 24 | sylan 583 | . . . 4 ⊢ ((𝜑 ∧ 𝑎 ∈ 𝐾) → (◡𝐹 “ 𝑎) ∈ 𝐽) |
26 | 23, 25 | sseldd 3916 | . . 3 ⊢ ((𝜑 ∧ 𝑎 ∈ 𝐾) → (◡𝐹 “ 𝑎) ∈ 𝑆) |
27 | 26 | ralrimiva 3149 | . 2 ⊢ (𝜑 → ∀𝑎 ∈ 𝐾 (◡𝐹 “ 𝑎) ∈ 𝑆) |
28 | elex 3459 | . . . 4 ⊢ (𝐾 ∈ Top → 𝐾 ∈ V) | |
29 | 1, 14, 28 | 3syl 18 | . . 3 ⊢ (𝜑 → 𝐾 ∈ V) |
30 | sigagensiga 31510 | . . . . . 6 ⊢ (𝐽 ∈ Top → (sigaGen‘𝐽) ∈ (sigAlgebra‘∪ 𝐽)) | |
31 | 1, 8, 30 | 3syl 18 | . . . . 5 ⊢ (𝜑 → (sigaGen‘𝐽) ∈ (sigAlgebra‘∪ 𝐽)) |
32 | 6, 31 | eqeltrd 2890 | . . . 4 ⊢ (𝜑 → 𝑆 ∈ (sigAlgebra‘∪ 𝐽)) |
33 | elrnsiga 31495 | . . . 4 ⊢ (𝑆 ∈ (sigAlgebra‘∪ 𝐽) → 𝑆 ∈ ∪ ran sigAlgebra) | |
34 | 32, 33 | syl 17 | . . 3 ⊢ (𝜑 → 𝑆 ∈ ∪ ran sigAlgebra) |
35 | 29, 34, 12 | imambfm 31630 | . 2 ⊢ (𝜑 → (𝐹 ∈ (𝑆MblFnM𝑇) ↔ (𝐹:∪ 𝑆⟶∪ 𝑇 ∧ ∀𝑎 ∈ 𝐾 (◡𝐹 “ 𝑎) ∈ 𝑆))) |
36 | 19, 27, 35 | mpbir2and 712 | 1 ⊢ (𝜑 → 𝐹 ∈ (𝑆MblFnM𝑇)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 399 = wceq 1538 ∈ wcel 2111 ∀wral 3106 Vcvv 3441 ⊆ wss 3881 ∪ cuni 4800 ◡ccnv 5518 ran crn 5520 “ cima 5522 ⟶wf 6320 ‘cfv 6324 (class class class)co 7135 Topctop 21498 Cn ccn 21829 sigAlgebracsiga 31477 sigaGencsigagen 31507 MblFnMcmbfm 31618 |
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 ax-inf2 9088 ax-ac2 9874 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 845 df-3or 1085 df-3an 1086 df-tru 1541 df-fal 1551 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-iin 4884 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-rdg 8029 df-1o 8085 df-2o 8086 df-oadd 8089 df-er 8272 df-map 8391 df-en 8493 df-dom 8494 df-sdom 8495 df-fin 8496 df-oi 8958 df-dju 9314 df-card 9352 df-acn 9355 df-ac 9527 df-top 21499 df-topon 21516 df-cn 21832 df-siga 31478 df-sigagen 31508 df-mbfm 31619 |
This theorem is referenced by: sxbrsiga 31658 rrvadd 31820 rrvmulc 31821 |
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