orvccel - Mathbox for Thierry Arnoux

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Theorem orvccel 34497

Description: If the relation produces closed sets, preimage maps by a measurable function are measurable sets. (Contributed by Thierry Arnoux, 21-Jan-2017.)

**Hypotheses**
Ref	Expression
orvccel.1	⊢ (𝜑 → 𝑆 ∈ ∪ ran sigAlgebra)
orvccel.2	⊢ (𝜑 → 𝐽 ∈ Top)
orvccel.3	⊢ (𝜑 → 𝑋 ∈ (𝑆MblFnM(sigaGen‘𝐽)))
orvccel.4	⊢ (𝜑 → 𝐴 ∈ 𝑉)
orvccel.5	⊢ (𝜑 → {𝑦 ∈ ∪ 𝐽 ∣ 𝑦𝑅𝐴} ∈ (Clsd‘𝐽))

**Assertion**
Ref	Expression
orvccel	⊢ (𝜑 → (𝑋∘_RV/𝑐𝑅𝐴) ∈ 𝑆)

Distinct variable groups: 𝑦,𝐴 𝑦,𝑅 𝑦,𝑋 𝑦,𝐽 Allowed substitution hints: 𝜑(𝑦) 𝑆(𝑦) 𝑉(𝑦)

**Proof of Theorem orvccel**
Step	Hyp	Ref	Expression
1		orvccel.1	. . 3 ⊢ (𝜑 → 𝑆 ∈ ∪ ran sigAlgebra)
2		orvccel.2	. . 3 ⊢ (𝜑 → 𝐽 ∈ Top)
3		orvccel.3	. . 3 ⊢ (𝜑 → 𝑋 ∈ (𝑆MblFnM(sigaGen‘𝐽)))
4		orvccel.4	. . 3 ⊢ (𝜑 → 𝐴 ∈ 𝑉)
5	1, 2, 3, 4	orvcval4 34495	. 2 ⊢ (𝜑 → (𝑋∘_RV/𝑐𝑅𝐴) = (^◡𝑋 “ {𝑦 ∈ ∪ 𝐽 ∣ 𝑦𝑅𝐴}))
6	2	sgsiga 34176	. . 3 ⊢ (𝜑 → (sigaGen‘𝐽) ∈ ∪ ran sigAlgebra)
7		cldssbrsiga 34221	. . . . 5 ⊢ (𝐽 ∈ Top → (Clsd‘𝐽) ⊆ (sigaGen‘𝐽))
8	2, 7	syl 17	. . . 4 ⊢ (𝜑 → (Clsd‘𝐽) ⊆ (sigaGen‘𝐽))
9		orvccel.5	. . . 4 ⊢ (𝜑 → {𝑦 ∈ ∪ 𝐽 ∣ 𝑦𝑅𝐴} ∈ (Clsd‘𝐽))
10	8, 9	sseldd 3931	. . 3 ⊢ (𝜑 → {𝑦 ∈ ∪ 𝐽 ∣ 𝑦𝑅𝐴} ∈ (sigaGen‘𝐽))
11	1, 6, 3, 10	mbfmcnvima 34289	. 2 ⊢ (𝜑 → (^◡𝑋 “ {𝑦 ∈ ∪ 𝐽 ∣ 𝑦𝑅𝐴}) ∈ 𝑆)
12	5, 11	eqeltrd 2833	1 ⊢ (𝜑 → (𝑋∘_RV/𝑐𝑅𝐴) ∈ 𝑆)

Colors of variables: wff setvar class

Syntax hints: → wi 4 ∈ wcel 2113 {crab 3396 ⊆ wss 3898 ∪ cuni 4858 class class class wbr 5093 ^◡ccnv 5618 ran crn 5620 “ cima 5622 ‘cfv 6486 (class class class)co 7352 Topctop 22809 Clsdccld 22932 sigAlgebracsiga 34142 sigaGencsigagen 34172 MblFnMcmbfm 34283 ∘_RV/𝑐corvc 34490

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2115 ax-9 2123 ax-10 2146 ax-11 2162 ax-12 2182 ax-ext 2705 ax-rep 5219 ax-sep 5236 ax-nul 5246 ax-pow 5305 ax-pr 5372 ax-un 7674 ax-inf2 9538 ax-ac2 10361

This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-nf 1785 df-sb 2068 df-mo 2537 df-eu 2566 df-clab 2712 df-cleq 2725 df-clel 2808 df-nfc 2882 df-ne 2930 df-ral 3049 df-rex 3058 df-rmo 3347 df-reu 3348 df-rab 3397 df-v 3439 df-sbc 3738 df-csb 3847 df-dif 3901 df-un 3903 df-in 3905 df-ss 3915 df-pss 3918 df-nul 4283 df-if 4475 df-pw 4551 df-sn 4576 df-pr 4578 df-op 4582 df-uni 4859 df-int 4898 df-iun 4943 df-iin 4944 df-br 5094 df-opab 5156 df-mpt 5175 df-tr 5201 df-id 5514 df-eprel 5519 df-po 5527 df-so 5528 df-fr 5572 df-se 5573 df-we 5574 df-xp 5625 df-rel 5626 df-cnv 5627 df-co 5628 df-dm 5629 df-rn 5630 df-res 5631 df-ima 5632 df-pred 6253 df-ord 6314 df-on 6315 df-lim 6316 df-suc 6317 df-iota 6442 df-fun 6488 df-fn 6489 df-f 6490 df-f1 6491 df-fo 6492 df-f1o 6493 df-fv 6494 df-isom 6495 df-riota 7309 df-ov 7355 df-oprab 7356 df-mpo 7357 df-om 7803 df-1st 7927 df-2nd 7928 df-frecs 8217 df-wrecs 8248 df-recs 8297 df-rdg 8335 df-1o 8391 df-2o 8392 df-er 8628 df-map 8758 df-en 8876 df-dom 8877 df-sdom 8878 df-fin 8879 df-oi 9403 df-dju 9801 df-card 9839 df-acn 9842 df-ac 10014 df-top 22810 df-cld 22935 df-siga 34143 df-sigagen 34173 df-mbfm 34284 df-orvc 34491

This theorem is referenced by: orrvccel 34501

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