measvunilem0 - Mathbox for Thierry Arnoux

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Theorem measvunilem0 34247

Description: Lemma for measvuni 34248. (Contributed by Thierry Arnoux, 6-Mar-2017.)

**Hypothesis**
Ref	Expression
measvunilem.0.1	⊢ Ⅎ𝑥𝐴

**Assertion**
Ref	Expression
measvunilem0	⊢ ((𝑀 ∈ (measures‘𝑆) ∧ ∀𝑥 ∈ 𝐴 𝐵 ∈ {∅} ∧ (𝐴 ≼ ω ∧ Disj 𝑥 ∈ 𝐴 𝐵)) → (𝑀‘∪ 𝑥 ∈ 𝐴 𝐵) = Σ^*𝑥 ∈ 𝐴(𝑀‘𝐵))

Distinct variable groups: 𝑥,𝑀 𝑥,𝑆 Allowed substitution hints: 𝐴(𝑥) 𝐵(𝑥)

**Proof of Theorem measvunilem0**
Step	Hyp	Ref	Expression
1		simp3l 1202	. . 3 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ ∀𝑥 ∈ 𝐴 𝐵 ∈ {∅} ∧ (𝐴 ≼ ω ∧ Disj 𝑥 ∈ 𝐴 𝐵)) → 𝐴 ≼ ω)
2		ctex 8892	. . 3 ⊢ (𝐴 ≼ ω → 𝐴 ∈ V)
3		measvunilem.0.1	. . . 4 ⊢ Ⅎ𝑥𝐴
4	3	esum0 34083	. . 3 ⊢ (𝐴 ∈ V → Σ^*𝑥 ∈ 𝐴0 = 0)
5	1, 2, 4	3syl 18	. 2 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ ∀𝑥 ∈ 𝐴 𝐵 ∈ {∅} ∧ (𝐴 ≼ ω ∧ Disj 𝑥 ∈ 𝐴 𝐵)) → Σ^*𝑥 ∈ 𝐴0 = 0)
6		nfv 1915	. . . 4 ⊢ Ⅎ𝑥 𝑀 ∈ (measures‘𝑆)
7		nfra1 3257	. . . 4 ⊢ Ⅎ𝑥∀𝑥 ∈ 𝐴 𝐵 ∈ {∅}
8		nfcv 2895	. . . . . 6 ⊢ Ⅎ𝑥 ≼
9		nfcv 2895	. . . . . 6 ⊢ Ⅎ𝑥ω
10	3, 8, 9	nfbr 5140	. . . . 5 ⊢ Ⅎ𝑥 𝐴 ≼ ω
11		nfdisj1 5074	. . . . 5 ⊢ Ⅎ𝑥Disj 𝑥 ∈ 𝐴 𝐵
12	10, 11	nfan 1900	. . . 4 ⊢ Ⅎ𝑥(𝐴 ≼ ω ∧ Disj 𝑥 ∈ 𝐴 𝐵)
13	6, 7, 12	nf3an 1902	. . 3 ⊢ Ⅎ𝑥(𝑀 ∈ (measures‘𝑆) ∧ ∀𝑥 ∈ 𝐴 𝐵 ∈ {∅} ∧ (𝐴 ≼ ω ∧ Disj 𝑥 ∈ 𝐴 𝐵))
14		eqidd 2734	. . 3 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ ∀𝑥 ∈ 𝐴 𝐵 ∈ {∅} ∧ (𝐴 ≼ ω ∧ Disj 𝑥 ∈ 𝐴 𝐵)) → 𝐴 = 𝐴)
15		simp2 1137	. . . . . . 7 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ ∀𝑥 ∈ 𝐴 𝐵 ∈ {∅} ∧ (𝐴 ≼ ω ∧ Disj 𝑥 ∈ 𝐴 𝐵)) → ∀𝑥 ∈ 𝐴 𝐵 ∈ {∅})
16	15	r19.21bi 3225	. . . . . 6 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ ∀𝑥 ∈ 𝐴 𝐵 ∈ {∅} ∧ (𝐴 ≼ ω ∧ Disj 𝑥 ∈ 𝐴 𝐵)) ∧ 𝑥 ∈ 𝐴) → 𝐵 ∈ {∅})
17		elsni 4592	. . . . . 6 ⊢ (𝐵 ∈ {∅} → 𝐵 = ∅)
18	16, 17	syl 17	. . . . 5 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ ∀𝑥 ∈ 𝐴 𝐵 ∈ {∅} ∧ (𝐴 ≼ ω ∧ Disj 𝑥 ∈ 𝐴 𝐵)) ∧ 𝑥 ∈ 𝐴) → 𝐵 = ∅)
19	18	fveq2d 6832	. . . 4 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ ∀𝑥 ∈ 𝐴 𝐵 ∈ {∅} ∧ (𝐴 ≼ ω ∧ Disj 𝑥 ∈ 𝐴 𝐵)) ∧ 𝑥 ∈ 𝐴) → (𝑀‘𝐵) = (𝑀‘∅))
20		measvnul 34240	. . . . . 6 ⊢ (𝑀 ∈ (measures‘𝑆) → (𝑀‘∅) = 0)
21	20	3ad2ant1 1133	. . . . 5 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ ∀𝑥 ∈ 𝐴 𝐵 ∈ {∅} ∧ (𝐴 ≼ ω ∧ Disj 𝑥 ∈ 𝐴 𝐵)) → (𝑀‘∅) = 0)
22	21	adantr 480	. . . 4 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ ∀𝑥 ∈ 𝐴 𝐵 ∈ {∅} ∧ (𝐴 ≼ ω ∧ Disj 𝑥 ∈ 𝐴 𝐵)) ∧ 𝑥 ∈ 𝐴) → (𝑀‘∅) = 0)
23	19, 22	eqtrd 2768	. . 3 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ ∀𝑥 ∈ 𝐴 𝐵 ∈ {∅} ∧ (𝐴 ≼ ω ∧ Disj 𝑥 ∈ 𝐴 𝐵)) ∧ 𝑥 ∈ 𝐴) → (𝑀‘𝐵) = 0)
24	13, 14, 23	esumeq12dvaf 34065	. 2 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ ∀𝑥 ∈ 𝐴 𝐵 ∈ {∅} ∧ (𝐴 ≼ ω ∧ Disj 𝑥 ∈ 𝐴 𝐵)) → Σ^𝑥 ∈ 𝐴(𝑀‘𝐵) = Σ^𝑥 ∈ 𝐴0)
25	13, 3, 3, 14, 18	iuneq12daf 32538	. . . . 5 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ ∀𝑥 ∈ 𝐴 𝐵 ∈ {∅} ∧ (𝐴 ≼ ω ∧ Disj 𝑥 ∈ 𝐴 𝐵)) → ∪ 𝑥 ∈ 𝐴 𝐵 = ∪ 𝑥 ∈ 𝐴 ∅)
26		iun0 5012	. . . . 5 ⊢ ∪ 𝑥 ∈ 𝐴 ∅ = ∅
27	25, 26	eqtrdi 2784	. . . 4 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ ∀𝑥 ∈ 𝐴 𝐵 ∈ {∅} ∧ (𝐴 ≼ ω ∧ Disj 𝑥 ∈ 𝐴 𝐵)) → ∪ 𝑥 ∈ 𝐴 𝐵 = ∅)
28	27	fveq2d 6832	. . 3 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ ∀𝑥 ∈ 𝐴 𝐵 ∈ {∅} ∧ (𝐴 ≼ ω ∧ Disj 𝑥 ∈ 𝐴 𝐵)) → (𝑀‘∪ 𝑥 ∈ 𝐴 𝐵) = (𝑀‘∅))
29	28, 21	eqtrd 2768	. 2 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ ∀𝑥 ∈ 𝐴 𝐵 ∈ {∅} ∧ (𝐴 ≼ ω ∧ Disj 𝑥 ∈ 𝐴 𝐵)) → (𝑀‘∪ 𝑥 ∈ 𝐴 𝐵) = 0)
30	5, 24, 29	3eqtr4rd 2779	1 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ ∀𝑥 ∈ 𝐴 𝐵 ∈ {∅} ∧ (𝐴 ≼ ω ∧ Disj 𝑥 ∈ 𝐴 𝐵)) → (𝑀‘∪ 𝑥 ∈ 𝐴 𝐵) = Σ^*𝑥 ∈ 𝐴(𝑀‘𝐵))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ∧ wa 395 ∧ w3a 1086 = wceq 1541 ∈ wcel 2113 Ⅎwnfc 2880 ∀wral 3048 Vcvv 3437 ∅c0 4282 {csn 4575 ∪ ciun 4941 Disj wdisj 5060 class class class wbr 5093 ‘cfv 6486 ωcom 7802 ≼ cdom 8873 0cc0 11013 Σ^*cesum 34061 measurescmeas 34229

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-cnex 11069 ax-resscn 11070 ax-1cn 11071 ax-icn 11072 ax-addcl 11073 ax-addrcl 11074 ax-mulcl 11075 ax-mulrcl 11076 ax-mulcom 11077 ax-addass 11078 ax-mulass 11079 ax-distr 11080 ax-i2m1 11081 ax-1ne0 11082 ax-1rid 11083 ax-rnegex 11084 ax-rrecex 11085 ax-cnre 11086 ax-pre-lttri 11087 ax-pre-lttrn 11088 ax-pre-ltadd 11089 ax-pre-mulgt0 11090 ax-pre-sup 11091

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-nel 3034 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-tp 4580 df-op 4582 df-uni 4859 df-int 4898 df-iun 4943 df-iin 4944 df-disj 5061 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-of 7616 df-om 7803 df-1st 7927 df-2nd 7928 df-supp 8097 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-fsupp 9253 df-fi 9302 df-sup 9333 df-inf 9334 df-oi 9403 df-card 9839 df-pnf 11155 df-mnf 11156 df-xr 11157 df-ltxr 11158 df-le 11159 df-sub 11353 df-neg 11354 df-div 11782 df-nn 12133 df-2 12195 df-3 12196 df-4 12197 df-5 12198 df-6 12199 df-7 12200 df-8 12201 df-9 12202 df-n0 12389 df-z 12476 df-dec 12595 df-uz 12739 df-q 12849 df-xadd 13014 df-ioo 13251 df-ioc 13252 df-ico 13253 df-icc 13254 df-fz 13410 df-fzo 13557 df-seq 13911 df-hash 14240 df-struct 17060 df-sets 17077 df-slot 17095 df-ndx 17107 df-base 17123 df-ress 17144 df-plusg 17176 df-mulr 17177 df-tset 17182 df-ple 17183 df-ds 17185 df-rest 17328 df-topn 17329 df-0g 17347 df-gsum 17348 df-topgen 17349 df-ordt 17407 df-xrs 17408 df-mre 17490 df-mrc 17491 df-acs 17493 df-ps 18474 df-tsr 18475 df-mgm 18550 df-sgrp 18629 df-mnd 18645 df-submnd 18694 df-cntz 19231 df-cmn 19696 df-fbas 21290 df-fg 21291 df-top 22810 df-topon 22827 df-topsp 22849 df-bases 22862 df-ntr 22936 df-nei 23014 df-cn 23143 df-haus 23231 df-fil 23762 df-fm 23854 df-flim 23855 df-flf 23856 df-tsms 24043 df-esum 34062 df-meas 34230

This theorem is referenced by: measvuni 34248

W3C validator