orvccel - Mathbox for Thierry Arnoux

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Theorem orvccel 32429

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 32427	. 2 ⊢ (𝜑 → (𝑋∘_RV/𝑐𝑅𝐴) = (^◡𝑋 “ {𝑦 ∈ ∪ 𝐽 ∣ 𝑦𝑅𝐴}))
6	2	sgsiga 32110	. . 3 ⊢ (𝜑 → (sigaGen‘𝐽) ∈ ∪ ran sigAlgebra)
7		cldssbrsiga 32155	. . . . 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 3922	. . 3 ⊢ (𝜑 → {𝑦 ∈ ∪ 𝐽 ∣ 𝑦𝑅𝐴} ∈ (sigaGen‘𝐽))
11	1, 6, 3, 10	mbfmcnvima 32224	. 2 ⊢ (𝜑 → (^◡𝑋 “ {𝑦 ∈ ∪ 𝐽 ∣ 𝑦𝑅𝐴}) ∈ 𝑆)
12	5, 11	eqeltrd 2839	1 ⊢ (𝜑 → (𝑋∘_RV/𝑐𝑅𝐴) ∈ 𝑆)

Colors of variables: wff setvar class

Syntax hints: → wi 4 ∈ wcel 2106 {crab 3068 ⊆ wss 3887 ∪ cuni 4839 class class class wbr 5074 ^◡ccnv 5588 ran crn 5590 “ cima 5592 ‘cfv 6433 (class class class)co 7275 Topctop 22042 Clsdccld 22167 sigAlgebracsiga 32076 sigaGencsigagen 32106 MblFnMcmbfm 32217 ∘_RV/𝑐corvc 32422

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 ax-5 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-11 2154 ax-12 2171 ax-ext 2709 ax-rep 5209 ax-sep 5223 ax-nul 5230 ax-pow 5288 ax-pr 5352 ax-un 7588 ax-inf2 9399 ax-ac2 10219

This theorem depends on definitions: df-bi 206 df-an 397 df-or 845 df-3or 1087 df-3an 1088 df-tru 1542 df-fal 1552 df-ex 1783 df-nf 1787 df-sb 2068 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2816 df-nfc 2889 df-ne 2944 df-ral 3069 df-rex 3070 df-rmo 3071 df-reu 3072 df-rab 3073 df-v 3434 df-sbc 3717 df-csb 3833 df-dif 3890 df-un 3892 df-in 3894 df-ss 3904 df-pss 3906 df-nul 4257 df-if 4460 df-pw 4535 df-sn 4562 df-pr 4564 df-op 4568 df-uni 4840 df-int 4880 df-iun 4926 df-iin 4927 df-br 5075 df-opab 5137 df-mpt 5158 df-tr 5192 df-id 5489 df-eprel 5495 df-po 5503 df-so 5504 df-fr 5544 df-se 5545 df-we 5546 df-xp 5595 df-rel 5596 df-cnv 5597 df-co 5598 df-dm 5599 df-rn 5600 df-res 5601 df-ima 5602 df-pred 6202 df-ord 6269 df-on 6270 df-lim 6271 df-suc 6272 df-iota 6391 df-fun 6435 df-fn 6436 df-f 6437 df-f1 6438 df-fo 6439 df-f1o 6440 df-fv 6441 df-isom 6442 df-riota 7232 df-ov 7278 df-oprab 7279 df-mpo 7280 df-om 7713 df-1st 7831 df-2nd 7832 df-frecs 8097 df-wrecs 8128 df-recs 8202 df-rdg 8241 df-1o 8297 df-2o 8298 df-er 8498 df-map 8617 df-en 8734 df-dom 8735 df-sdom 8736 df-fin 8737 df-oi 9269 df-dju 9659 df-card 9697 df-acn 9700 df-ac 9872 df-top 22043 df-cld 22170 df-siga 32077 df-sigagen 32107 df-mbfm 32218 df-orvc 32423

This theorem is referenced by: orrvccel 32433

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